MSA5P1926C – New Technology Training – 2015 Suabru Legacy & Outback

SEOCONTENT-START

Technician
Reference
Booklet
MSA5P1926C
June 2014
2015 Legacy
and Outback
Module 926
New Technology Training

© Subaru of America, Inc. 2014 926 R-1
© Copyright 2014
Subaru of America, Inc.
All rights reserved. This book may not be
reproduced in whole or in part without the
express permission of Subaru of America,
Inc. Specifications in this Guide are based
on the latest product information available at
the time of publication. Some images shown
are for illustration purposes only.
Subaru of America, Inc. reserves the right at
any time to make changes or modifications
to systems, procedures, descriptions, and
illustrations contained in this book without
necessarily updating this document.
Information contained herein is considered
current as of June 2014.
This Technical Reference Booklet (TRB) is designed to be used in a
classroom environment or as a guide for self study.
The TRB is not intended to be used as a supplement or substitute for
the Subaru Service Manual. Always consult the appropriate Service
Manual when performing any diagnostics, maintenance or repair to any
Subaru vehicle.
© 2014 Subaru of America, Inc. Printed in USA. All rights reserved. Contents may not be reproduced in whole or in part without
prior written permission of publisher. Specifications in this Guide are based on the latest product information available at the
time of publication. Some images shown are for illustration purposes only. Some equipment shown in photography within this
Guide is optional at extra cost. Specific options may be available only in combination with other options. Specific combinations of
equipment or features may vary from time to time, and by geographic area. Subaru of America, Inc. reserves the right to change
or discontinue at any time, without notice: Prices, colors, materials, equipment, accessories, specifications, models and packages,
without incurring any obligation to make the same or similar changes on vehicles previously sold. Colors shown may vary due to
reproduction and printing processes. Subaru of America, Inc. is not responsible for typographical errors. Aha™ is a trademark
of HARMAN International Industries, Inc.) Alcantara® is a registered trademark of Alcantara S.p.A., and Alcantara is produced
by the Toray Group. BBS® is a registered trademark of BBS Kraftahrzeugtechnik AG. Bluetooth® is a registered trademark of
Bluetooth SIG, Inc. Brembo® is a registered trademark of Freni Brembo S.p.A. CS Auto, Circle Surround Automotive and WOW
are trademarks of SRS Labs, Inc. Ecsaine® is a registered trademark of Toray Industries, Inc. Harman Kardon® is a registered
trademark of Harman International Industries, Inc. HD Radio® is a registered trademark of iBiquity Digital Corporation. HomeLink®
is a registered trademark of Prince Corporation, a wholly owned subsidiary of Johnson Controls. iPod® is a registered trademark of
Apple Inc. iTunes® is a registered trademark of Apple Inc. Metal-Matrix Diaphragm (MMD®) is a registered trademark of Harman
International Industries, Inc. Smart Way is a registered trademark of the U.S. Environmental Protection Agency. SRS(●)® Circle
Surround Automotive and WOW are registered trademarks of SRS Labs, Inc. TORSEN LSD® is a registered trademark of JTEKT
TORSEN North America, Inc. SiriusXM® is a registered trademark of SiriusXM Satellite Radio, Inc. / SiriusXM NavTraffic® is a
registered trademark of SiriusXM Satellite Radio, Inc. Added Security, BRZ, EyeSight, Impreza, Forester, Lineartronic, Legacy,
Outback, Subaru, SUBARU BOXER, Tribeca, and WRX, STI, and XV Crosstrek are registered trademarks of Fuji Heavy Industries,
Ltd. Subaru STARLINK is a trademark of Fuji Heavy Industries, Ltd.
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Table of Contents
Introduction………………………………………………………………………………………………………………. 8
Body………………………………………………………………………………………………………………… 8
Active Grille Air Shutter System (AGAS)……………………………………………………… 9
Bumper Cover Removal……………………………………………………………………………11
Radiator or Condenser Removal………………………………………………………………. 13
Fuel Tank Position Check………………………………………………………………………… 15
Battery Hold Down Bracket……………………………………………………………………… 16
Tool Kit and Spare Tire……………………………………………………………………………. 17
Coolant Fan Mounting…………………………………………………………………………….. 18
HVAC…………………………………………………………………………………………………… 19
Rear Vent Door Actuator Operation…………………………………………………………… 20
Sun Visors…………………………………………………………………………………………….. 21
Audio and Navigation……………………………………………………………………………… 21
6.2 Inch Display…………………………………………………………………………………….. 22
7.0 Inch Display……………………………………………………………………………………… 23
Rear Window Regulator………………………………………………………………………….. 24
Trailer Adapter Connector……………………………………………………………………….. 25
Assist Grip Removal……………………………………………………………………………….. 26
Dash Pad……………………………………………………………………………………………… 28
Steering Support Beam and Wiring Harnesses………………………………………….. 30
Electrical…………………………………………………………………………………………………………………. 34
Introduction……………………………………………………………………………………………………… 34
Battery……………………………………………………………………………………………………………. 34
Battery Sensor………………………………………………………………………………………. 34
Wiring & Connectors…………………………………………………………………………………………. 35
Fuse Box………………………………………………………………………………………………. 35
Lighting…………………………………………………………………………………………………………… 36
Welcome Lighting………………………………………………………………………………….. 37
Day-time Running Lamps (DRL)………………………………………………………………. 39
Steering-Responsive Fog Lights (SRF)…………………………………………………….. 40
Immobilizer & Keyless Entry……………………………………………………………………. 47
Combination Meter…………………………………………………………………………………. 48
LAN/CAN Changes………………………………………………………………………………………….. 50
CAN Diagnostics……………………………………………………………………………………. 51
BIU………………………………………………………………………………………………………………… 54
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Power Rear Gate (PRG)……………………………………………………………………………………………. 56
Construction……………………………………………………………………………………………………. 58
Electrical Control……………………………………………………………………………………………… 60
Touch Sensors…………………………………………………………………………………………………. 62
Separating the Rear Gate from the PRG Assembly………………………………………………. 66
Rear Gate will not close………………………………………………………………………….. 66
Rear Gate will not open………………………………………………………………………….. 67
“Memory Height” Learning Procedure…………………………………………………………………. 68
Retrieval of the rear gate height:………………………………………………………………. 69
Operating Characteristics……………………………………………………………………….. 69
Rear gate drop prevention function…………………………………………………………… 69
Supplemental Restraint System (SRS)……………………………………………………………………… 72
Airbag components………………………………………………………………………………… 73
The Front Seat Side Airbags……………………………………………………………………..74
Seat Cushion Airbag………………………………………………………………………………. 75
Curtain Airbag……………………………………………………………………………………….. 78
Occupant Detection System…………………………………………………………………….. 82
Front Passenger Seat Construction………………………………………………………….. 83
Deployment Logic………………………………………………………………………………….. 84
Additional Information ………………………………………………………………………………………. 86
Chassis…………………………………………………………………………………………………………………… 88
Introduction……………………………………………………………………………………………………… 88
Front Suspension Key Changes include:…………………………………………………… 88
Front Stabilizer Link……………………………………………………………………………….. 88
Control Arm Bushings Rear…………………………………………………………………….. 89
Rear Suspension…………………………………………………………………………………… 90
Alignment……………………………………………………………………………………………… 90
Dampers (Front and Rear)………………………………………………………………………. 91
Active Torque Vectoring…………………………………………………………………………… 91
Tire Pressure Monitoring Systems……………………………………………………………. 93
EyeSight® (Version 3)……………………………………………………………………………………………… 94
Introduction……………………………………………………………………………………………………… 94
System Features………………………………………………………………………………………………. 96
Adaptive Cruise Control………………………………………………………………………….. 96
Pre-collision Braking Control……………………………………………………………………. 97
Pre-collision Steering Assist (NEW)………………………………………………………….. 98
Pre-collision Braking Assistance………………………………………………………………. 99
Pre-collision Throttle Management……………………………………………………………. 99
Lane Departure Warning…………………………………………………………………………. 99
Lane Sway Warning……………………………………………………………………………….. 99
System Layout…………………………………………………………………………………………………100
Camera Adjustment………………………………………………………………………………………….102
Point A………………………………………………………………………………………………….103
Point B………………………………………………………………………………………………….104
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Subaru Rear Vehicle Detection (SRVD)……………………………………………………………………..106
Introduction……………………………………………………………………………………………………..106
Subaru Rear Vehicle Detection functions…………………………………………………………….106
Blind Spot Detection (BSD)……………………………………………………………………..106
Lane Change Assist (LCA)………………………………………………………………………106
Rear Cross Traffic Alert (RCTA)………………………………………………………………..107
Operating Conditions……………………………………………………………………………..107
Driver Alerts…………………………………………………………………………………………………….108
SRVD Approach indicator lights……………………………………………………………….108
Rear View Camera Indicator……………………………………………………………………109
SRVD Approach Warning Buzzer……………………………………………………………..110
Construction………………………………………………………………………………………….112
SRVD “OFF” Switch……………………………………………………………………………….115
Diagnostics…………………………………………………………………………………………..116
Radar Axis Alignment……………………………………………………………………………..118
SSM Procedure……………………………………………………………………………………. 123
Brakes…………………………………………………………………………………………………………………… 126
EPB Construction and Operation……………………………………………………………. 129
EPB Electrical Operation and Control……………………………………………………………….. 132
New EPB Features…………………………………………………………………………………………. 136
Emergency Brake Operation……………………………………………………………………………. 137
Emergency Release of the EPB……………………………………………………………… 137
Servicing Rear Brake Pads……………………………………………………………………. 139
Electric Power Steering (EPS)………………………………………………………………………………… 142
Introduction……………………………………………………………………………………………………. 142
Major Changes………………………………………………………………………………………………. 142
Electric Power Steering Circuit…………………………………………………………………………. 143
Drive Motor…………………………………………………………………………………………. 144
Resolver Sensor…………………………………………………………………………………… 145
Torque Sensor……………………………………………………………………………………… 146
Magnetic Ring……………………………………………………………………………………… 146
Flux Rings…………………………………………………………………………………………… 147
Flux Collecting Rings……………………………………………………………………………. 147
Flux Collecting Yoke……………………………………………………………………………… 148
Flux Collecting Yoke……………………………………………………………………………… 149
Alignment Collar…………………………………………………………………………………… 150
Diagnostics…………………………………………………………………………………………. 151
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Powertrain…………………………………………………………………………………………………………….. 154
FB 2.5…………………………………………………………………………………………………………… 154
Piston…………………………………………………………………………………………………. 154
Intake Cam Sprockets…………………………………………………………………………… 155
Exhaust Cam Sprockets………………………………………………………………………… 155
Exhaust Cam Sprocket SST…………………………………………………………………… 156
Valve Adjustment………………………………………………………………………………….. 156
Cylinder Head……………………………………………………………………………………… 156
Intake Manifold & Tumble Generating Valves (TGV)………………………………….. 157
Exhaust Manifold…………………………………………………………………………………. 158
Exhaust Gasket……………………………………………………………………………………. 158
Fuel Pipe…………………………………………………………………………………………….. 159
Ignition Coil…………………………………………………………………………………………. 160
EGR Cooler…………………………………………………………………………………………. 160
Evaporative Emissions………………………………………………………………………….. 161
EZ 3.6 Changes…………………………………………………………………………………………….. 164
SST Check Boards……………………………………………………………………………….. 167
Engine Removal…………………………………………………………………………………………….. 168
Engine Removal…………………………………………………………………………………… 168
Lineartronic Continuously Variable Transmission Generation 2 (CVT G2/TR58)……….174
Introduction…………………………………………………………………………………………..174
Shifting Control………………………………………………………………………………………174
CVT Fluid……………………………………………………………………………………………. 175
Internal changes………………………………………………………………………………….. 175
CVT Vent………………………………………………………………………………………………176
CVT Cooler…………………………………………………………………………………………..176
Dynamic Damper…………………………………………………………………………………. 177
Transfer Clutch Pressure Test………………………………………………………………… 177
Transmission Control Module (TCM)……………………………………………………….. 178
Lineartronic Continuously Variable Transmission High-torque Generation 1 (CVT G1/
TR69)…………………………………………………………………………………………………………… 179
Introduction…………………………………………………………………………………………. 179
Forward & Reverse Changeover mechanism……………………………………………. 180
Vent……………………………………………………………………………………………………. 181
TCM…………………………………………………………………………………………………… 181
Shifter…………………………………………………………………………………………………. 182
Shift Lock Release……………………………………………………………………………….. 183
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2015 Legacy and Outback New Technology Training (Module 926)
Introduction
Body
The 2015 model year of the Legacy and Outback introduces full model changes that focus on
safety, fuel efficiency, and improved Human Machine Interface Systems.
2015 Legacy 2015 Outback
Legacy Model Lineup Outback Model Lineup
2.5i 2.5i
2.5i Premium 2.5i Premium
2.5i Limited 2.5i Limited
3.6R Limited 3.6R Limited
All models are equipped with Lineartronic Continuously Variable Transmissions (CVT). Generation
2 CVT (TR58) will be installed on 2.5i vehicles. High torque Generation 1 CVT (TR69) will be
installed on all 3.6R models.
New or enhanced driver assistance systems:
– Welcome Lighting
– Steering Responsive Fog lights
– Electronic Power Steering
– Eyesight
– Subaru Rear Vehicle Detection
– X Mode
New or enhanced safety systems:
– Supplemental Restraint System Airbags
– Electronic Parking Brake
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The Legacy and Outback for 2015 are approximately 10% more aerodynamic. This streamlining is
the result of design changes to the front and rear corners of the vehicle, side view mirrors, under
chassis air flow, and introduction of the Active Grille Air Shutter System (AGAS).
Active Grille Air Shutter System (AGAS)
All 4 cylinder models of the 2015 Legacy and Outback are equipped with the Active Grille Air
Shutter System (AGAS).
The AGAS is designed to improve fuel efficiency by improving body aerodynamics and decreasing
engine warm up time.
AGAS Closed AGAS Open
The AGAS defaults to the open position in case of electrical communication malfunction.
Note: The AGAS is not spring loaded to the open position.
Note: The AGAS will remain closed if the ambient temperature is lower than 37 degrees
Fahrenheit (3 degrees C).
The opening and closing of the AGAS is determined by ambient temperature, coolant temperature,
and vehicle speed.
The three wire actuator receives command signals and transmits its position through a single LIN
communications wire that is routed to the Engine ECM.
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AGAS Actuator
Note: The Engine ECM of the 2015 Legacy and Outback is LIN compatible.
During service or replacement, the AGAS automatically initializes so there is no special procedure
required to calibrate the AGAS to the vehicle.
Note: Work support for the AGAS has been added to the ECM menu.
R/B
2
W W
R/B
3
4 B
5 B
A55
B63 A: B134
B491
J/C
ECM
MB-2
M/B FUSE NO. 30
(B)
ACTIVE GRILLE
SHUTTER
REF. TO GND [m]
AGAS Wiring Schematic
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Bumper Cover Removal
Bumper cover removal is necessary when removing the radiator. The bumper cover (front and
rear) is attached to the body with trim clips only.
Begin bumper cover removal by removing the six clips along the top side at the indicated positions.
Upper Clips
Inner Fender Clip
Elevate the vehicle and remove the inner fender trim tab from each front inner wheel well. Raise
the vehicle high enough to remove the three lower bumper cover trim tabs and the three trim tabs
located in front of each tire.
Lower Clips
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Lower the access panel and disconnect the fog light connector (left and right).
Pull outward and upward to disengage the bumper cover locking tabs from the body mounts.
Fog Light Removing Bumper Cover
Place the bumper cover in a safe location. Inspect the locking tabs and body mounts for damage.
Front End Locking Tabs
Note: The bumper cover locking tabs have been strengthened to prevent deformation
during removal.
DRL Resistor
The Daytime running light resistor, horn, and windshield washer reservoir are located under the
left side of the bumper cover. The second horn is located under the right side of the bumper cover.
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Radiator or Condenser Removal
Note: Radiator or condenser removal requires bumper cover removal.
After bumper cover removal, remove the four clips along the top and the two clips that face forward
that secure the grille bracket to the vehicle and remove the grille bracket.
Grille Bracket Clips Under Grille Bracket
Remove the left and right upper radiator brackets, and two upper radiator to condenser bolts.
Upper Radiator Bracket Condenser To Radiator Bracket
Next remove the bolts that secure the “condenser to radiator bracket”.
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Remove the left and right lower bolts first, then the 4 upper bolts. Remove the two brackets from
the vehicle to prevent damage to the radiator or condenser.
Note: For lower bolt removal:
The radiator and condenser can be raised slightly as an assembly for bolt
removal while using a socket and ratchet. The SST 73099SG000 must be used to
correctly torque the bolt(s). The radiator and condenser must be seated before
the bolt(s) are torqued.
Removing Lower Bolt Upper Bolts
Secure the condenser to the vehicle with string to prevent damage as the radiator is removed.
Condenser Secured
If the condenser is being removed, leave the radiator in the vehicle with the coolant hoses attached.
Push the radiator inward slightly and remove the condenser.
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Fuel Tank Position Check
A new positioning check is required if the fuel tank is removed from the vehicle. A new fuel tank
positioning mark is made onto the vehicle.
Fuel Tank Measuring Fuel Tank Position
Check that the leading edge of the fuel tank is 14.5 millimeters or less as measured in the picture
above. Reposition the fuel tank if the measurement exceeds the specification. Measurements
exceeding specifications that cannot be adjusted to specifications, indicate damage has occurred
to the tank or the vehicle body.
NOTES:
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Battery Hold Down Bracket
A new battery hold down bracket with captured mounting bolts and positioning guide is installed
on the new Legacy and Outback.
Battery Hold Down Bracket Bolt and Guide Guide in Place
The positioning guide temporarily holds the new bracket in place while the bolts are started.
Note: The mounting bolt capture washer may stay with the battery tray upon removal.
Retain the washer for bolt installation.
Hold Down Bracket Complete Battery Tray
The battery hold down positioning guide is installed on the inboard side of the battery (engine side).
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Tool Kit and Spare Tire
The tool kit of the Outback includes a tow hook and a flat tire storage bag with tie down strap.
The storage bag is needed because the spare tire well is not large enough to hold a flat full size
tire (225/60 R18).
Note: The Legacy tool kit does not include a tow hook.
Tool Kit Flat Tire Bag and Tie Down Strap
The Outback spare tire is a T155/80 R 17. A polystyrene spacer prevents the spare tire from creating
any noise or vibration while stored.
Spare Tire Spacer
An air bubble filled painted vibration dampening sheet coats the bottom of the spare tire well.
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Coolant Fan Mounting
The coolant fan assembly is attached to the radiator and can be removed with the radiator still
mounted in the vehicle.
Note: Engine coolant must be drained to allow the coolant overflow bottle and the
upper radiator hose to be removed.
Radiator and Cooling Fans Upper Locking Tab
The upper left and right corners of the coolant fan assembly are secured to the radiator with locking
tabs that are disengaged by squeezing the two tabs together.
Removing Cooling Fans Lower Docking Slot
The two lower corners are positioned into a docking slot and do not require any unlocking for
removal. Lift the coolant fan assembly away from the radiator after the two upper locking tabs
have been released.
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HVAC
The Legacy and Outback 2.5i models are equipped with Manual Air Conditioning. 2.5i Premium
and Limited Models are equipped with Dual Zone Automatic Climate Control.
2.5i Premium and Limited Models are also equipped with rear seat air conditioning vents and
rear seat heaters.
Note: The temperature output to the rear seat air conditioning vents is controlled by
the temperature setting for the passenger side front.
HVAC Controls Rear A/C Vents and Seat Heater Switches
Rear Seat Heater Control Unit
The 2 level rear seat heaters are controlled by the Rear Seat Heater Control Unit, which is
located in the left rear of the vehicle.
Note: The front seat heaters retain their set positions after the ignition has been
turned off. The rear seat heaters default to off.
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Rear Vent Door Actuator Operation
The rear vent door actuator (introduced 2013 MY) controls the temperature of the air delivered to
the rear passengers through the center console rear vents. Set temperature for the rear passengers
is strictly controlled by the front passenger temperature control dial. Airflow mode setting has no
effect on rear vent door actuator position. The rear vent door actuator mixes chilled air from the
evaporator with heated air from the heater core. The SSMIII PID for this is Rr Vent Door Actuator
Position.
If the displayed value is at 75% (lowest temperature setting), the rear vent door is biased to
allow more cold air to flow. As the PID value decreases from 75% to -5% (temperature set point
increased) the amount of cold air mixed decreases and hot air increases. At the lowest value of
-5% (highest temperature setting) the air flow will essentially shut off for both hot and cold. Work
support can be accessed on the SSMIII by selecting All other models Each System Check
Air Condition System Work Support System Operation Check Mode.
(2)
(1)
(5)
(6)
(3)
(4)
(7)
(8)
(1) Duct-rear heater LH
(2) Duct-rear heater RH
(3) Duct-extension LH
(4) Duct-extension RH
(5) Duct-console front
(6) Duct-console rear
(7) Center console duct
(8) Grille ASSY-rear heater
HVAC Duct Layout
The actuator can only be replaced by removing the heating and cooling unit and blower motor
housing from the vehicle.
Rear A/C Vent Actuator In Compartment HVAC Assembly
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Sun Visors
The Sun Visors are mounted on a sliding rod that allows the position of the Sun Visor to be adjusted
after being moved to the side.
Sun Visor Collapsed Sun Visor Expanded
Audio and Navigation
The 2015 Legacy and Outback will be equipped with 3 styles of Audio and Audio/Navigation systems.
6.2 Inch Display 7 Inch Display
7 Inch Display With Navigation
The 2.5i models will be equipped with the Clarion Audio Infotainment system with a 6.2 inch display.
2.5i Premium and Limited models will be equipped with the Fujitsu Ten Audio Infotainment system
with a 7.0 inch display. An optional Fujitsu Ten Audio and Navigation Infotainment system with a
7.0 inch display, will be available for the 2.5i Premium and Limited models.
The 7.0 inch display Infotainment systems have voice control capability and can communicate with
the Automatic Climate Control, via UART, allowing the HVAC to be operated with voice commands.
Note: Refer to the Subaru owner’s manual for a list of voice commands.
The 7.0 inch display Infotainment systems are connected to the high speed Body CAN. This allows
communication between the Fujitsu Ten and the Subaru Select Monitor.
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Diagnostic Trouble Codes are also available to assist with diagnostics. The data displayed provides
more detailed data than the built in Line Check function.
Both the 6.2 inch and 7.0 inch Infotainment systems are equipped with Line Check functions.
6.2 Inch Display
1. (a) Press the button to display the Audio OFF screen.
2. Touch the screen in order from (b) to (e).
(a)
(b)
(d)
(c)
(e)
Activating Line Check
Note: To exit the diagnostic mode, turn the ignition switch from ACC OFF to ON.
3. <> screen is displayed.
Camera Setting Audio Check
Line Diag
MIC OK
Rr_CAM OK
USB OK
AUX OK
SXM OK
UART OK
Connectivity Check Vehicle Signal Check
ILL +
SPD
PKB
REV
OFF
OFF
ON
OFF
Line Diagnostic Information
This Line Check function allows the displayed signals to be checked for connection to the
Infotainment system. Activate each device to create the input signal needed to change the detection
status from NG to OK.
The Camera Setting allows adjustment of the displayed guide lines that appear when the vehicle
is in reverse gear range. Audio check rotates the sound from the radio to each speaker. Turn up
the volume to monitor each speaker.
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7.0 Inch Display
1. With the main power OFF, press the button (b) twice while pressing the button (a)
simultaneously.
(b)
(c) (a)
Activating Line Check
Note: Pressing the button (c) for 3 seconds or more, or turning the ignition from ACC OFF
to ON position can exit the diagnostic mode.
2. << Line Diag>> screen is displayed.
3. Check the connection status for each item listed in {Connectivity Check} displayed on
the left of the screen.
This Line Check function allows the displayed signals to be checked for connection to the
Infotainment system. Activate each device to create the input signal needed to change the detection
status from NG to OK.
The Camera Setting allows adjustment of the displayed guide lines that appear when the vehicle
is in reverse gear range. Audio check rotates the sound from the radio to each speaker. Turn up
the volume to monitor each speaker.
Note: GPS will indicate NG on non-Navigation equipped Infotainment systems.
Camera Setting Audio Check
Line Diag
GPS OK
MIC OK
Rr_CAM OK
AUX OK
USB1 OK
USB2 OK
OK
OK
UART
OK
CAN
Connectivity Check Vehicle Signal Check
ILL +
SPD
PKB
IGN
OFF
OFF
ON
OFF
REV OFF
Line Diagnostic Information
Note: The vehicle signal check does not change to “OFF” after a signal has been
received (ON) and then removed, until the ignition is cycled.
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Rear Window Regulator
The rear window regulator of the Legacy and Outback is described as an “I Arm” window regulator.
This type uses a single roller that moves through a channel that is attached to the window glass.
The height of the window is controlled by the position of the roller in the channel.
Rear Window Assembly I Arm And Roller
The regulator is attached to the door with 4 bolts and is easily removed through the opening in
the lower section of the door.
Regulator Mounting Points Window Taped In Position
The window glass must be taped to the door to prevent the glass from dropping after the regulator
has been removed.
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Back Side Of Regulator
Trailer Adapter Connector
The trailer adapter connector is taped to the body behind the trim panel on the left rear of the
vehicle, just behind the rear seat.
Trailer Adapter Connector
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Assist Grip Removal
The Assist Grips are attached to the vehicle with a new style locking clip that allows for faster
removal and installation. Begin removal by compressing (downward) the locking tab of the cap
and then push up slightly on the bottom side of the cap.
Note: Do not push on the clips after the caps are removed or they will fall into the
area above the headliner. The clip must be retrieved to prevent NVH issues and
possible interference with Curtain Airbag Operation.
Compressing Locking Tab Pushing Up on Cap
Remove the caps and set aside in a safe place. Pull the Assist Grip straight away from the headliner
without changing the mounting angle of the clips.
Cap Removed Assist Grip Clips in Place
If the clips are pushed inward after Assist Grip removal, the clip will fall into the area above the
headliner. The clip must be retrieved to prevent NVH issues and possible interference with
Curtain Airbag operation.
The clips must be removed from the body to reinstall to the Assist Grip. Squeeze the clip near the
body. The locking tabs are on the outer side of the mounting area to prevent the clip from sliding
outward after installation of the Assist Grip.
Note: A hook tool secured into the lower side of the clip will prevent the clip from
falling into the body during removal.
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Move the clip up and down to clear the locking tabs from the body (mounting area).
Removing Clips Clip and Hook Tool
The clip can be re-used if not deformed. Install both clips into Assist Grip. The clips must be flush
on the inboard side.
Clip and Assist Grip Clip Installed
Install and fully seat the cap on both ends of the Assist Grip. The front and rear Assist Grips are
different. Be certain to install to the correct location.
Installing Cap Assist Grip Ready for Installation
Align the Assist Grip over the body and firmly press inward. Test the installation by pulling on the
Assist Grip.
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Dash Pad
The construction of the dash pad, instrument panel wiring harness, bulkhead wiring harness, and
steering beam, make it necessary to remove the dash pad and steering beam separately. The
instructions for servicing these parts are covered in detail in the service manual. The following
information and precautions need to be observed to prevent unnecessary work and possible
damage to vehicle components.
The Sunload sensor and Automatic Headlight sensor have been separated.
Note: DTCs for the Sunload sensor and can generate from use inside a shop.
The wiring harnesses that connect to these components are short and very difficult to
reach once they have fallen into the dash pad. The sensors are mounted to the front defogger
trim panel which must be lifted on the trailing edge to allow servicing of the sensors. The forward
leading edge of the front defogger trim panel must not disengage from the dash pad. The
entire dash pad will need to be removed from the vehicle and disassembled, to re-seat the
forward leading edge of the front defogger trim panel.
Automatic Headlight Sensor Sunload and Automatic Headlight Sensor Locations
The Automatic Headlight sensor is located on the outside edge of the trim panel and Sunload
sensor is towards the middle of the trim panel. Confirm operation and identification before
beginning removal.
Removing Sunload Sensor
Begin by removing the speaker covers from each end of the front defogger trim. Next, use a trim
stick and slowly pry up the trailing edge of the front defogger trim. Use several pry points across
the trim panel.
Note: Apply downward pressure to the leading edge of the defogger trim panel while
prying up on the trailing edge.
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Note: The wiring harness for the sensor located in the middle of the defogger trim
(Sunload) has the shortest harness and there is a trim tab directly in front of the
area needed to see the sensor. Shift your line of sight from side to side of the
trim tab while working to release the locking tabs of the sensor.
The next step is to support the defogger trim panel to a height that allows enough room to work
without stressing the leading edge of the defogger trim panel. Support the trim panel approximately
2 inches away from center on both sides at an approximate height of 1 ½ inches. The objects
supporting the defogger panel should be firm enough to support the trim panel at the height
needed, without deforming the dash or scarring the trim panel.
1. Using a long screwdriver, apply gentle inward pressure at point A. The locking tab should
move to an unlocked position while pressure is applied.
2. Using another long screwdriver, apply gently upward pressure at point B. The locking tab
and sensor should clear the defogger trim panel on the side that is being released.
A D
B C
Removing Sensor
3. Remove the two screwdrivers.
4. Using a long screwdriver, apply gently upward pressure at point C.
Note: The pressure applied at point C must be balanced so that the previously
released side is not pushed back down.
5. Using another long screwdriver, apply gentle inward pressure at point D. The locking tab
should move to an unlocked position while pressure is applied.
6. Remove the screwdrivers.
7. Gently pull the sensor by hand away from the defogger trim panel.
8. Tie a long string (Approximately 4 feet), below the sensor electrical connector.
9. If the dash panel is being removed, perform the release procedure to both sensors.
Secure Sensor Both Sensors Secured
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Steering Support Beam and Wiring Harnesses
Right Side, Dash Pad Removed
Center, Dash Pad Removed
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Left of Center, Dash Pad Removed
Above Steering Wheel, Dash Pad Removed
Note: GPS antenna, Keyless Access and Push Button Start Control Unit have been
reinstalled for photography.
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June 2014
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Left of Steering Wheel, Dash Pad Removed and Steering-Responsive Fog Light Control Unit (SRF)
Driver Side Lower, Dash Pad Removed
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NOTES:
34
June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Electrical
Introduction
The 2015 Legacy and Outback feature a variety of refinements to the electrical systems to improve
efficiency and maximize the Human Machine Interface (HMI).
Battery
The 2015 Legacy and Outback FB 2.5 models are now equipped with a 55D23R for a weight
savings of 4.4 lbs. (2kg). EZ 3.6 Models are equipped with the 75D23R.
55D23R Battery
Battery Sensor
A Battery Current and Temperature Sensor has been added to the 2015 Legacy and Outback.
Detected information is transmitted to the ECU via a LIN communication line. This is the same
design as the 2015 WRX STI and 2014 XV Crosstrek Hybrid.
B78
A: B134 ECM
Y/R
Y/R
R 1 Y/R A27
W 2 W A55
2
1
B67
B9
BATTERY
SENSOR
12 volt
Battery Current & Temperature Sensor Battery Sensor Wiring
2-1
2-2 2-3
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Wiring & Connectors
Throughout the vehicle, smaller 0.22mm2 gauge wiring (23-24 AWG) and 0.24mm width connector
terminals are now utilized to reduce weight and cost. In these areas, Hinge lock style connectors
have been utilized to ensure sufficient terminal contact.
Hinge Lock Style Connector (Artwork) Hinge Lock Style Connector
Fuse Box
The engine compartment main fuse box has been redesigned to decrease weight and improve
space.
Main Fuse Box
Smaller Slow-Burn Fuses (SBF) are used to reduce weight and space.
Top of Slow Burn Fuse (SBF) Bottom of Slow Burn Fuse (SBF)
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
The Main Fuse is located under a small protective panel. It is accessed by pressing the outer tabs
inward and pulling up on the cover.
Main Fuse cover Cover Tabs Cover Removed
Lighting
The Headlights on the 2015 Legacy and Outback include new safety and visibility features such
as Welcome Lighting, Enhanced Day-time Running Lamps, and Steering Responsive Fog Lights.
Low Beams
Two headlight options are available. Standard Halogen or HID with an Automatic Leveling system.
Headlight range has been increased to support the longer and wider visible range of the Version
3 Eyesight Driver Assist System.
Halogen HID with Leveler
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Welcome Lighting
For added night time security, the 2015 Legacy and Outback feature standard Welcome Lighting
that automatically turns on cabin illumination and exterior lights (low beams and position lamps)
as the driver approaches/unlocks or leaves/locks the vehicle.
Welcome Lights OFF Welcome Lights ON
Welcome Lighting operating conditions for approaching the vehicle
• Lighting ON
– Doors are unlocked with the remote key
– The Headlight switch is set to the “AUTO” position
– The area around the vehicle is dark (Light Sensor input)
• Lighting OFF
– Doors are relocked
– The Headlight switch is turned to a position other than “AUTO”
– The Ignition switch is turned to the “ON” or “ACC” positions
– Automatically, based on a customizable Delay Time setting (30/60/90 sec).
Welcome Lighting operating conditions for leaving/Exiting the vehicle
• Lighting ON
– When Ignition switch is turned to the “OFF” position or key is removed from ignition
– The area around the vehicle is dark (Light Sensor input)
• Lighting OFF
– The Headlight switch is turned to a position other than “AUTO”
– The “Locking” operations is performed twice from either the door handle or keyless
remote
– Automatically after Driver’s door has been opened and closed, based on a customizable
Delay Time Setting (30/60/90 sec)
– Automatically after 3 min. even if the Driver’s door is opened, but not closed. (To
conserve the battery)
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Approach and Leaving/Exiting Delay times can be adjusted for Welcome Lighting through the BIU
or Combination Meter. This can be set to 30, 60, or 90 second delays.
Vehicle Settings Welcome Lighting
Approaching time set Leaving time set
BIU Customizing
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Day-time Running Lamps (DRL)
DRLs for the 2015 Legacy and Outback now function with the turn signals to improve visibility.
When a turn signal is activated, the corresponding DRL will turn off to improve the visibility for
surrounding vehicles and pedestrians.
DRLs OFF DRLs ON Left Turn Signal ON
In order to achieve this individual control in response to turn-signal function, Headlight control is
now independent for each side and additional relays have be added.
DRL Cancel
Relay
DRL
Resistor
BIU
High Beam
Relay
2014MY
DRL Cancel
Relay LH
DRL Cancel
Relay RH
BIU
High Beam
Relay LH
High Beam
Relay RH
2015MY
DRL Wiring Diagrams
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Steering-Responsive Fog Lights (SRF)
The 2015 Legacy and Outback are optionally equipped with a new Steering-Responsive Fog Light
system. An SRF Control Module communicates with the Main CAN to monitor vehicle speed and
steering angle. The system activates the left and right fog lights independently to provide enhanced
visibility in the direction of the turn.
(1) SRF light distribution when turning left
(2) Headlamp light distribution of low beams
(3) Headlamp cut-off line
(1)
(2)
(3)
SRF Light Distribution
Fog Lights OFF Right Turn, Fog Light ON Left Turn, Fog Light ON
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
The following conditions must be satisfied in order for the SRF system to function.
Low beam light ON
Fog lamp OFF
Shift position Except “R”
SRF OFF switch OFF
Vehicle speed & Steering angle
condition is satisfied
The SRF system can be temporarily disabled by pressing the Instrument Panel located “SRF OFF”
button. However, SRF is defaulted to the ON position when the ignition cycled.
SRF OFF Switch
(1) SRF OFF switch (3) Body integrated unit
(2) SRF Control Module (4) Data link connector
NOTE:
Part label: LIGHTING CONTROL UNIT
(2) (3)
(4)
(1)
SRF Component Locations
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
The SRF Control Unit is located on the driver side of the vehicle against the bulkhead. This is
interchanged with the Auto Headlight Leveling (AHL) Control Unit for models equipped with HID
headlights. On AHL equipped vehicles, all SRF functions are controlled by the AHL control unit.
Lighting Control Unit SRF Control Unit (Dash removed)
NOTES:
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
i28
B42
i92
L: i81
N: B281
B474
B488
ON
OFF
FG+
i73
2 *4 R/Y
B
B
1
*3 2
1
V/Y
BR
L/R
G/L
R/L R/L
W
B/Y
4
3
L17 W
N7 BR
N25 V/Y
W 8
B/W 7
G/B 6
L 26
R 25
G/L 14
Y 5
L/R L/R 1
R/L 12
L/Y 3
R/Y 10
R/L
L/Y
B 13
B/Y 5
B/Y
B
B/Y 4
Y 1
B/Y
A
B/Y
C
FG-
*1
*5
*1
*2
*2
*2
*2
*2
*2
*2
*1
*2
*2
*2
i112 B60
62
3 B
B478
J/C
5 B
B483
J/C
1 B
B491
J/C
b
b
b
MB-11
F. FOG RELAY
MB-30
F. FOG RELAY
MB-9
M/B FUSE NO. 38
(B)
FB-46
F/B FUSE NO. 18
(IG)
MB-10
M/B FUSE NO. 39
(B)
BODY INTEGRATED UNIT
COMBINATION
SWITCH
(FRONT
FOG LIGHT
SWITCH)
OP CONNECTOR
(FOG LIGHT SWITCH)
SRF CM
SRF OFF SWITCH
FRONT FOG LIGHT
RH
FRONT FOG LIGHT
LH
REF. TO CLEARANCE LIGHT &
ILLUMINATION LIGHT
SYSTEM [b]
REF. TO CAN
COMMUNICATION
SYSTEM [c]
REF. TO GND [l] REF. TO GND [l] REF. TO GND [m]
SRF Wiring Diagram
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
19 18 17 16 13
12 11 10 9 8 7 6 5 4 3 2 1
26 25 24 23 22 21 20 15 14
SRF Module Connector (B42) SRF Module Disconnected
Terminal No. Content Measuring condition Standard
1 Chassis ground Battery power supply (right) Always 8 — 16 V
2 Chassis ground — — —
3 Chassis ground Fog light output (right)
4 Chassis ground — — —
5 Chassis ground SRF OFF switch
6 Chassis ground — — —
7 Chassis ground — — —
8 Chassis ground Rear vehicle height sensor signal*1
IG ON (with no passenger, no
load and vehicle stopped)
Approx. 2.5 V (changes
according to vehicle
condition)
9 Chassis ground — — —
10 Chassis ground Fog light output (left)
11 Chassis ground — — —
12 Chassis ground Battery power supply (left) Always 8 — 16 V
13 Chassis ground GND Always Less than 1 Ω
14 Chassis ground Ignition power supply Ignition switch ON 8 — 16 V
15 Chassis ground Leveling actuator power supply*1 Ignition switch On 8 — 16 V
16 Chassis ground Leveling actuator GND*1 Always Less than 1 Ω
17 Chassis ground — — —
18 Chassis ground — — —
19 Chassis ground — — —
20 Chassis ground — — —
21 Chassis ground Leveling actuator signal*1
Headlight off on
Less than 1 V 1.0 —
14.4 V (for 17 seconds)
Headlight on, no vehicle
height change change
and hold vehicle height for 3
seconds or more
22 Chassis ground — — —
23 Chassis ground
Rear vehicle height sensor power
supply*1
Ignition switch On 4.75 — 5.25 V
24 Chassis ground Rear vehicle height sensor GND*1 Always Less than 1 Ω
25 Chassis ground CAN-H (CAN communication line) Cannot be measured —
26 Chassis ground CAN-L (CAN communication line) Cannot be measured —
*1: With auto headlight beam leveler system
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Inspection of the SRF system can be performed using the Subaru Select Monitor III.
Inspection of the SRF System with SSMIII
DTCs for the SRF system
DTC Item Reference
U0074
Control Module
Communication Bus “Body-
CAN” Off

U0101 Lost Communication With
TCM

U0122
Lost Communication With
Vehicle Dynamics Control
Module

U0402 Invalid Data Received From
TCM

U0416
Invalid Data Received From
Vehicle Dynamics Control
Module

U1140
Lost Communication With
Body Control Module Body-
CAN

U1422
Invalid Data Received
From Body Control Module
Body-CAN

B2900 AHLCU Error
B2902 Rear Height Sensor Error
B2906 Fog Light Harness(RH)
B2907 Fog Light Harness (LH)
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
The “Turn & Hazard Unit” has been eliminated. All previous functions are now controlled by the BIU.
i170
B
B
B
B
BY
B
MA
LM
AA
WM
G
OrG
D: i171
13 23
B71
i1
B36
i88
i10
RH
OFF
LH
B
J/C
B C TURN-02
D TURN-02
B TURN-02
A TURN-02
B491
1
WM
WM
B
I/F I/F
LM
LM
*1
RG
L
RG
L
B 7
RB 6
LB 5
3
G 8
2
1
4
G
BY
D18
RB
LB
B
15 24
12
ON
OFF
39
11
10
*1
*1 B
J/C
i100
*1 *1
*1 B
J/C i82
WB 10
WB
WB
B36 i1
5
MA
2
AA 1
AA
4
MA
*1
MICRO COMPUTER
TURN SIGNAL
INDICATOR
LIGHT LH
TURN SIGNAL
INDICATOR
LIGHT RH
COMBINATION METER
A/C CONTROL
PANEL
(HAZARD
SWITCH)
COMBINATION
SWITCH
(TURN SIGNAL
SWITCH)
BODY
INTEGRATED
UNIT
TO POWER SUPPLY CIRCUIT
FB-28
F/B FUSE NO. 11
(IG)
MB-36
M/B FUSE NO. 18
(B)
: WITH MIRROR TURN
: AUTO A/C
: LUMINESCENT METER
: MANUAL A/C
: TERMINAL No. OPTIONAL ARRANGEMENT
TURN SIGNAL & HAZARD MODULE
REF. TO GND
[GND-02]
REF. TO GND
[GND-04]
REF. TO GND
[GND-03·05]
2014 Outback Turn Signal Wiring
3
12
3
12
i73
A
B
RH
OFF
LH
B477
i76 D83
D15
i101 D84
D5
B487
*2
*2
*1
*1
*1
*3
*4
*3
*4
V
R
13
15
B/Y
B/Y
12
B
B
R/G
L/Y
R/G
L/Y
M2 B/Y
J4 B/Y
K38 R
B
B
B/G
R/G
K18 V
M8 R/G
M3 B/G
J1
J5
R/G
B 7
2
*1
*1
B
B
*1
*1
B
B
W
B 7
L/Y W 2
3
B491
B 4
B483
B 3
B478
i82 J/C
B/Y
B/Y
B/Y
D42
J/C
D38
J/C
K: i171
M: B280
N: B281
J: i 84
W/R
L/R
W/B
M7
N32
M4
W/B
L/R
W/R
F/B
J/C J/C J/C
b
b
OUTER MIRROR
ASSY LH
OUTER MIRROR
ASSY RH
FRONT
COMBINATION
LIGHT RH
(FRONT TURN
SIGNAL LIGHT)
FRONT
COMBINATION
LIGHT LH
(FRONT TURN
SIGNAL LIGHT)
BODY
INTEGRATED
UNIT
COMBINATION
SWITCH
(TURN SIGNAL
SWITCH)
REF. TO GND [c] REF. TO GND [m] REF. TO GND [l] REF. TO GND [l] REF. TO GND [f] REF. TO GND [f]
FB-22
F/B FUSE NO. 14
(B)
FB-30
F/B FUSE NO. 26
(B)
MB-32
M/B FUSE NO. 14
(B)
F/B FUSE NO. 9
(ACC)
F/B FUSE NO. 26
(B)
2015 Outback Turn Signal Wiring
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Immobilizer & Keyless Entry
The Keyless Entry System for the 2015 Legacy and Outback features restyled transmitters.
Immobilizer functionality remains the same as previous Immobilizer Type D systems.
2015 Legacy and Outback KAC Transmitters
The mechanical key for KAC vehicles is now laser cut on one side only. A Key Number tag is
supplied upon delivery.
Mechanical Key Removed
Mechanical Key Cut
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Combination Meter
The 2015 Legacy and Outback feature a new sporty instrument panels highlighted by two binocularstyle
gauge pods. Centered in the panel is a standard 3.5” LCD or a 5” LCD for models with the
Eyesight driver-assist system. The Premium and Limited-trim levels feature electro-luminescent
gauges.
3.5 inches
5 inches
Outback 5” LCD Combination Meter Available Combination Meters
The Combination Meter has an additional 2 wire harness (connector i267) that connects to the
dash mounted Trip Reset Switch.
Trip Reset Switch Trip Reset Switch Connector
i10
i267
1 2 19
21 22
20
39 40
1 2
A: CONNECT
CONNECT
B:
Combination Meter Connectors
2-41 2-42
2-43 2-44
2-45
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
In the event of replacement, the Combination Meter now requires a Selection of Parameter similar
to VDC modules. This procedure is completed using the SSMIII
SSMIII Selections For Replacing Combination Meter
NOTES:
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
LAN/CAN Changes
The 2015 Legacy and Outback receive a new CAN configuration to accommodate the increased
numbers of modules and functions. In comparison to previous models, the primary difference is
that the CAN has been divided into two separate High Speed circuits identified as “Main CAN”
and “Body CAN”. New members to the CAN include the Subaru Rear Vehicle Detection, Auto Head
Lamp Leveler (or SRF CU), and Infotainment units.
A: i80
C: i242
C15
C14
A21
A11
10
9
R137
C27 B20
C35 B28
C: i84
A: B280
B: B281
AB6
22
13
B180
2
3
1
2
B40
14
6
B518
D: B137
C: B136
4
7
i10
33
32
4
5
R355
33
9
B310
8
10
C28
25 H6
C17
D18
D19
A: B54
B: B55
B231
B17
B18
A20
A21
2
3
TCM
CVT
ECM
VDC CM
EPB CM
I/F
AT
OP WP
OP
OP
WP
WP
WP
WP
STEERING
ANGLE
SENSOR
KEYLESS
ACCESS CM
COMBINATION
METER
STEREO
CAMERA
SECURITY
CM
DATA LINK
CONNECTOR
REMOTE
ENGINE
START CM
AIRBAG
CM
BODY
INTEGRATED UNIT
A/C CM
2014 Legacy And Outback CAN 12 *
*13
*13
*12
*11
*11
*9
*9
*8
*10
*10
*8
*7
*7 *6
*6
*5
*5
*2
*1
B40
C10
C9
10
11
C: i87
A: i10 B:
B11
B10
i188 i34
6
5
A7
A6
i241
A23
A24
A: AB6
A: A: i80
A24
A25
A: B134
*1
*14
*8*9*10 *11
*12 *13 *14
*3*4*5*6*7
*2 14
6
A2
A1
B450
2
3
A3
A2
B42
43
44
B310
12
13
R137
9
10
7
2
R25
K: i171
24
23
i74 B150 B180
26
25
N: B281
N15
N31
K2
K22
ECM
VCM CM TCM SRF CM
DATA
LINK
CONNECTOR
BODY
INTEGRATED
UNIT
A/C CM
STEERING
ANGLE
SENSOR
SUBARU
REAR VEHICLE
DETECTION (LH)
AUTO HEADLIGHT
BEAM LEVELER CM
: CAN Hi (MAIN LINE)
: CAN Lo (MAIN LINE)
: CAN Hi (BRANCH LINE)
: CAN Lo (BRANCH LINE)
: TERMINAL RESISTANCE
: STABILIZING CIRCUIT
STEREO
CAMERA
IMPACT
SENSOR
POWER
STEERING
CM
: WITHOUT PUSH BUTTON START : 1
WITH PUSH BUTTON START : 2
: WITHOUT PUSH BUTTON START
: WITH PUSH BUTTON START
: WITH ELECTRIC POWER STEERING
: WITH SUBARU REAR VEHICLE DETECTION
: WITH EyeSight
: WITHOUT SRF
: WITH SRF
: WITH REMOTE ENGINE START
: WITH PUSH BUTTON START
: WITH IMMOBILIZER CM
: WITH IMPACT SENSOR
: ENGINE TYPE FB (CVT MODEL) : T10
ENGINE TYPE EZ : B54
: WITHOUT PUSH BUTTON START : 2
WITH PUSH BUTTON START : 3
AIRBAG CM
KEYLESS
ACCESS
CM
COMBINATION
METER
IMMOBILIZER
CM
REMOTE
ENGINE START
CM
AUDIO OR
NAVIGATION UNIT
2015 Legacy And Outback CAN
2-47
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
CAN Diagnostics
Terminating Resistors for the Main CAN are located in the ECM and BIU. In previous models, the
terminating resistors were located in the ECM and VDC.
Terminating Resistors for the Body CAN are located in the BIU and Combination Meter. Regardless
if working with the Main or Body CAN, Terminating Resistor values remain the same from previous
model years and should produce 53 – 61Ω when measured across the CAN High and CAN Low
wires.
Please note modules that have the ability to “wake” the CAN Circuit from a “sleep” mode. Failures
within these modules may cause parasitic draw (dark current) as a related symptom.
MAIN CAN
Wake up Wake up Private CAN
ECM-LIN
UART UART
SMT-LIN
UART
BODY CAN
Wake up Wake up Wake up Wake up Wake up
BIU-LIN 1
UART
ECM
BIU
EPS VDC/EPB EYE RDR (Master)
STA SRS ACN
RES
AHL
IMB SMT AVN
DLC
RDR (Slave)
ODS A/C Panel AGAS BMM
PRG PSM SRF
Keyless/TPMS
MET
Steering Lock
TCM
CAN Configuration
EPS – Electric Power Steering IMB – Immobilizer (UK / Canada only)
TCM – Transmission Control Module PRG -Power Rear Gate
SRS – Supplemental Restraint System Control Unit VDC/EPB – Vehicle Dynamics Control/ Electronic Parking Brake
RDR – Subaru Rear Vehicle Detection (SRVD) AVN – Audio/Video/Navigation
DLC – Data Link Connector AHL – Auto Head lights
ECM – Engine Control Module RES – Remote Engine Start
AGAS – Active Grille Air Shutter System SRF – Steering Responsive Fog Lights
BMM – Battery Monitor Module MET – Combination Meter
STA – Steering Angle Sensor A/C – Air Conditioning
EYE – Eyesight ACN – Air Conditioning Control Module
ODS – Occupant Detection System PSM – Power Seat Memory
BIU – Body Intergrated Unit SMT – SMART (Keyless Access Control)
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The Subaru 2015 Legacy and Outback Service Manual provide updated diagnostics to differentiate
operating faults and communication inabilities.
Using stored DTCs, reference the Check Sheet to identify the failure location in the Network
Diagram.
J/C J/C J/C J/C J/C J/C J/C
CVT
LAN01569 VDC CM
BODY ECM
INTEGRATED
UNIT
AIRBAG CM
A/C CM
COMBINATION
METER
STEERING ANGLE SENSOR
REMOTE ENGINE
STARTER
IMPACT SENSOR
DATA LINK CONNECTOR
SUBARU REAR
VEHICLE DETECTION (LH)
STEREO CAMERA
KEYLESS ACCESS CM
AHL CM OR SRF CM
POWER STEERING CM
IMMOBILIZER CM
AUDIO OR
NAVIGATION UNIT
Network Diagram
(A)
U0073
U0074
U0075
U0077
U0100
U0101
U0122
U0126
U0128
U0131
U0140
U0151
U0155
U0162
U0164
U0167
U0169
U0181
U0208
U0230
U0284
U0327
U1140
U1232
U1235
U1712
ECM
TCM
VDC
STA
EPB
EPS
BIU
A/B
MET
AVN
IMB
SUN
AHL
SEAT
PRG
ACT
KPS
BIU
RDR
EYE
BAT
(B)
ECM
VDC
EPS
TCM
RDR
A/B
EYE
BIU
AHL
SRF
RES
AVN
IMB
KPS
IMP
MET
LAN01594
– – – – – – – – – – – – – – – – – –
– – – – – – – – – – – – – – – – – – – –
– – – – – – – – – – – – – – – – – – – –
– – – – – – – – – – – – – – – – – – –
– – – – – – – – – – – – – – – – – – – –
– – – – – – – – – – – – – – – – – – – – – – – – –
– – – – – – – – – – – – – – – – – – – –
– – – – – – – – – – – – – – – – – –
– – – – – – – – – – –
– – – – – – – – – – – – – – – – – – – – – – –
– – – – – – – – – – – – – – – – – – – – – –
– – – – – – – – – – – – – – – – – – – – – – – – – –
– – – – – – – – – – – – –
– – – – – – – – – – – – – – – – – – – – – – – – – –
– – – – – – – – – – – – – – – – – – – –
– – – – – – – – – – – – – – – – – – – – – – – – – –
– – – – – – – – – –
A/C
A/C
Communication Check Sheet
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This step can also be supplemented by using a new function of the SSMIII. However, the list of
ECU’s displayed does not confirm communication, only their required presence in the vehicle.
Communication for initializing should be performed with each of the ECUs separately to verify
communication.
CAN BUS Communication (1)
CAN BUS Communication (2)
CAN BUS Communication (3)
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Although communication may be possible with all modules on the CAN, it is possible an operating
fault still exists. Use the Error Check Sheet to identify the source.
LAN01595
ECM
TCM
VDC
EPB
EPS
BIU
MET
IMB
KPS
STA
BIU
EYE
KEY
BIU
U0401
U0402
U0416
U0417
U0420
U0422
U0423
U0424
U0426
U0427
U0428
U1422
U1433
U1500
U1673
ECM
VDC
EPS
TCM
RDR
A/B
EYE
BIU
AHL
SRF
RES
AVN
IMB
KPS
IMP
MET
(A)
A/C
A/C
Error Check Sheet
BIU
The BIU on the 2015 Legacy and Outback has been redesigned to combine the interior fuse/relay
box and joint box.
Joint Box / BIU Front Joint Box / BIU Rear
CAUTION: These components cannot be disassembled. Assembly replacement is required.
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NOTES:
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Power Rear Gate (PRG)
The 2015 Outback is optionally equipped with a Power Rear Gate (PRG). The PRG provides an
electric powered opening and closing feature that is controlled through a switch on the rear gate,
instrument panel, keyless access remote, or the mechanical keyless entry key.
Open PRG Opener Switch
The Opener switch on the PRG is located between the rear license plate light lenses.
Closer Switch Switch Cluster
The Closer switch is located on the left side of the gate, near the mechanical latch assembly.
The interior PRG Opener/Closer switch and PRG Memory Height switch are located on the switch
cluster to the left of the steering wheel.
Note: The PRG of the 2015 Outback operates from a constant mesh gear drive system.
Do not use excessive force to manually operate the PRG or damage to the PRG
will occur.
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Warning: Keep away from the closing area of the rear gate (PRG). The outer edge of the rear
gate (PRG) beyond the touch sensor cannot detect solid objects and will not trigger a
safety maneuver until the amperage of the rear gate (PRG) exceeds a pre-established
specification.
The 2015 Outback PRG is classified as an Arm Lift system that receives mechanical power from
the motor through a set of stacked reduction and drive gears. A spring is used to assist with the
initial movement of the gate (opening or closing). Gate operation of the Forester Spindle Drive
PRG is accomplished with a threaded drive block and rotating threaded drive rod.
Arm Lift PRG Spindle Drive PRG
The PRG of the Outback can never be separated from the reduction drive gears. This type of
system eliminates the need for a motor clutch and half stop solenoid. The combined gear ratio
and force from the gate struts will hold the gate in a set position.
The Forester PRG is equipped with an electric clutch to disengage the Spindle Drive system
from the reduction gears and motor. A Manual Release lever allowed for a fail-safe mechanical
disengagement of the moving parts that can be utilized if an electrical or mechanical problem
prevented the gate from opening.
PRG Gear Set Manual Release Lever
Constant mesh Arm Lift PRGs cannot separate the gate lifting mechanism from the drive system
which prevents any type of fail-safe mechanical release. Removing the lift arm is the only way to
separate the gate from the PRG assembly.
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Construction
The PRG is driven by a DC brushed motor that delivers power to the PRG gear assembly. The
motor transfers mechanical power though a flexible metal drive shaft to a worm gear.
PRG Assembly PRG Motor And Drive Shaft
The metal drive shaft is wire wound to increase strength. A spiral wound fiber thread surrounds
the drive shaft to ensure the clearance between engagement points is minimum.
Drive Shaft Drive Shaft And Worm Gear
The drive shaft transfers power from the motor rotor to the worm gear set of the PRG gear assembly.
The final gear ratio provides the strength and speed needed to open and close the rear gate.
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All gears are lubricated during construction and require no additional maintenance.
Gears and Lubrication
Note: Due to the constant mesh design of the gear set, Manual Mode is not
recommended. The opening force required to open the rear gate in Manual Mode
is 25 to 30 lbs., which is approximately double the force required to open the
Forester Spindle Drive PRG.
NOTES:
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Electrical Control
The PRG Control Unit is located next to the PRG motor assembly and is secured to the vehicle
body with 2 clips that are made onto the plastic body of the control unit. Use care when removing
the control unit so that the clips are not damaged. The PRG control unit communicates with the
BIU through a LIN communications wire for all PRG operations. Data to the Select Monitor will be
slow due to the reduced communications speed of the LIN circuit.
Note: The operation of the Auto Closer assembly is the same as the Forester type
PRG. Refer to the 602 TRB for details on Auto Closer operation.
K i171
B R423 L i81
A R422
B40
14
6
4
5
8
16
A12
L18
A10
B4
K2
K22
B6
:
: :
:
REF. TO ENGINE
ELECTRICAL SYSTEM
POWER REAR GATE CM BODY INTEGRATED UNIT
FB-58
F/B FUSE NO. 5
(IG)
FB-21
F/B FUSE NO. 14
(B)
MB-44
F/B FUSE NO. 17
(B)
FB-42
M/B FUSE NO. 19
(IG)
DATA LINK CONNECTOR
PRG Control Unit LIN Circuit
The armature of the PRG motor is equipped with a revolution sensor reluctor which is constructed
with alternating magnetic poles. Two Hall sensors, Hall 1 and Hall 2, create input signals to the
PRG control unit as the alternating magnetic poles revolve by the sensors.
Revolution Sensor Reluctor Hall Sensors
The PRG control unit combines the two signals to create the data viewed on the Subaru Select
Monitor as Rear Gate Speed and Pulse-count 2.
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Select Monitor Hall Sensor Data
Revolution Sensor Patterns
The speed and direction of the PRG motor is controlled by the power supply frequency and duty
ratio to the brushes and armature.
Brushes PRG Motor Control
The frequency of the power supply can reach as high as 16,000 Hz. Typical motor amperage
is 18 amps during start up and 6 to 8 amps during normal movement. A blocked rear gate can
create current flow as high as 23 amps in the motor drive circuit, which will result in a reversal of
the rear gate direction.
Normal PRG Motor Amperage
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3-22
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Touch Sensors
The pinch or Touch Sensor of the Outback PRG is comprised of four individual sensor strips that
are wired in series, providing only one input to the PRG control unit. Each side of the gate has
upper and lower sensor strips that are connected together under the upper edge trim of the lower
sensor. The lower sensor strips are bolted into place while the upper sensor strips are held in
place by an adhesive strip. Never re-use an upper sensor strip once it has been removed from
the vehicle.
Note: If the rear window glass is removed, the upper sensor strips must be replaced.
(2)
T1
(1)
T1
Touch Sensors Upper and Lower Touch Sensors
Always separate the upper and lower sensor strips during diagnostics to isolate an open or short
circuit of the individual sensors strips.
A1
A9
1
2
1
2
A: R422
D151 D150
TOUCH SENSOR RH TOUCH SENSOR LH
POWER REAR GATE CM
Connector Touch Sensor Artwork
A single DTC, B2524 Touch Sensor Failure, is provided to indicate a problem with the Touch Sensor.
Note: The line drawing of the Touch Sensor in the PRG Diagnostics section of the
service manual does not include the detail needed to perform diagnostics.
Always refer to the PRG wiring schematics in the electrical section of the Subaru
Service Manual.
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3-24
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D154
12
7
A: R422
R89 D6
2 R
A6 L L 1 L
V
P
A1 V V
P
R
R b A
2
1
D109 D111
2
1
D110 D112
2
1
D150 D107
2
1
D151 D108
POWER REAR GATE
TOUCH SENSOR
(UPR) RH
POWER REAR GATE
TOUCH SENSOR
(UPR) LH
POWER REAR GATE
TOUCH SENSOR
(LWR) RH
POWER REAR GATE
TOUCH SENSOR
(LWR) LH
POWER REAR GATE
INNER SWITCH
POWER REAR
GATE CM
Touch Sensor Wiring Schematic
NOTES:
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R424
R422 R423
14 13 12 11 10 9 8 7 6 5
4 3 2 1
16 15 14 13 12 11 10 9
8 7 6 5 4
6 5 4
3 2 1 3 2 1
SL-03073
TO C:
TO A: TO B:
PRG I/O Chart Connectors
Terminal No. Description Measuring condition Standard
(R422) No. 1 Chassis
ground
Touch sensor When sensor is ON Less than 1 V
(R422) No. 2 Chassis
ground
— — —
(R422) No. 3 (R422) No. 9 Latch switch When rear gate is fully closed 4 — 6 V
(R422) No. 4 (R422) No. 9 Courtesy switch When rear gate is fully closed 4 — 6 V
(R422) No. 5 (R422) No. 9 Sector switch When rear gate is fully closed Less than 1 V
(R422) No. 6 (R422) No. 9 PRG inner SW When power rear gate inner switch is ON 10.5 — 16 V
(R422) No. 7 — — —
(R422) No. 8 Chassis
ground
Memory height switch When memory height switch is On 10.5 — 16 V
(R422) No. 9 Switch GND — —
(R422) No. 10 LIN communication line — —
(R422) No. 11 — — —
(R422) No. 12 Chassis
ground
Ignition SW When ignition switch is On —
(R422) No. 13 Chassis
ground
Power rear gate driver’s
switch
When driver’s switch is ON 10.5 — 16 V
(R422) No. 14 Chassis
ground
— — —
(R422) No. 15 Chassis
ground
Hazard output When hazard is not operating Less than 1 V
(R422) No. 16 Chassis
ground
— — —
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June 2014
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Terminal No. Description Measuring condition Standard
(R421) No. 1 Chassis
ground
Battery power supply
(+POWER B)
Always 10.5 — 16 V
(R421) No. 2 Chassis
ground
Closer (CLOSE)
When the power rear gate auto closer is
performing the pull-in operation
10.5 — 16 V
(R421) No. 3 Chassis
ground
Closer (OPEN)
When power rear gate auto closer is
performing the release operation
10.5 — 16 V
(R421) No. 4 Chassis
ground
GND Always Less than 1 Ω
(R421) No. 5 Chassis
ground
— — —
(R421) No. 6 Chassis
ground
Battery power supply
(+B)
Always 10.5 — 16 V
(R424) No. 1 Chassis
ground
— — —
(R424) No. 2 Chassis
ground
— — —
(R424) No. 3 Chassis
ground
Motor (CLOSE) When auto-closing is in operation 10.5 — 16 V
(R424) No. 4 Chassis
ground
Motor (OPEN) When auto-open is in operation 10.5 — 16 V
(R424) No. 5 Buzzer (-) — —
(R424) No. 6 (R424) No. 5 Buzzer (+) When buzzer sounds Pulse
(R424) No. 7 Chassis
ground
— — —
(R424) No. 8 Chassis
ground
HALL RETURN — —
(R424) No. 9 Chassis
ground
HALL2 — —
(R424) No. 10 Chassis
ground
HALL1 — —
(R424) No. 11 Chassis
ground
HALL FEED — —
(R424) No. 12 Chassis
ground
— — —
(R424) No. 13 Chassis
ground
— — —
(R424) No. 14 Chassis
ground
— — —
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Separating the Rear Gate from the PRG Assembly
Rear Gate will not close
Caution: Disconnect the power supply or fuse from the PRG motor before removing the lift arm.
SBF-6, Fuse Number 14, and Fuse Number 5
M/B
B66
B48
2 4
1
3
1
3
2 4
1
3
2 4
1
3
2 4
1
3
2 4
1
3
2 4
4
2
1 3
3
2
4
1
3
2 4
1
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
1 2
1 2
2 1
2 1
2 1
2 1
1 2
1 2
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
2 1
SBF-1
2 1
SBF-2
2 1
SBF-13
2 1
SBF-12
2 1
SBF-9
1 2
SBF-14
1 2
SBF-15
1 2
SBF-16
SBF-10
1 2
SBF-17
1 2
SBF-18
1 2
SBF-7
1 2
SBF-5
1 2
SBF-3
2 1
SBF-8
2 1
SBF-6
2 1
SBF-4
2 1
SBF-11
No. 18
No. 19
No. 20
No. 21
No. 22
No. 23
No. 24
No. 25
No. 26
No. 27
No. 29
No. 30
No. 31
No. 32
No. 33
No. 34
No. 35
No. 36
No. 37
No. 42
No. 43
No. 40
No. 41
No. 38
No. 39
No. 44
No. 45
No. 9
No. 10
No. 11
No. 12
No. 13
No. 14
No. 15
No. 16
No. 17
No. 7
No. 8
No. 5
No. 6
No. 3
No. 4
No. 1
No. 2
No. 28
RELAY HOLDER
RELAY
HOLDER
IG 1 RELAY
(PUSH BUTTON
START)
H/L HI RH
RELAY
WIPER RELAY
MAIN RELAY
DAYTIME
RUNNING
LIGHT RH
RELAY
DAYTIME
RUNNING
LIGHT LH
RELAY
MAIN FAN
RELAY 2
REAR
WIPER
RELAY
MAIN FAN
RELAY 1
BRAKE
RELAY
SUB FAN
RELAY
REAR
DEFOGGER
RELAY
FUEL
PUMP
RELAY
MAIN FAN
RELAY
SUB FAN
RELAY
ELECTRIC
THROTTLE
CONTROL
RELAY
HORN
RELAY
F. FOG
RELAY
TAIL &
ILLUMINATION
RELAY
H/L LO
RELAY
MAIN
SBF
H/L HI LH
RELAY
(4) (5)
(1)
(2) (3)
F/B
No. 5
No. 10
No. 15
No. 20
No. 25
No. 30
No. 35
No. 1
No. 6
No. 11
No. 16
No. 21
No. 26
No. 31
No. 36
No. 2
No. 7
No. 12
No. 17
No. 22
No. 27
No. 32
No. 37
No. 3
No. 8
No. 13
No. 18
No. 23
No. 28
No. 33
No. 38
No. 4
No. 9
No. 14
No. 19
No. 24
No. 29
No. 34
Main Box, Engine Compartment Fuse Box, In Car
Should a mechanical condition prevent the PRG of the 2015 Outback from closing, release the
lift arm at the motor arm and then release the opposite end at the gate.
Access Panel Removed Lift Arm
An access panel is provided to allow a technician room for removing the lift arm connection.
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Rear Gate will not open
Open Access Panel with Gate Closed Top of Gate Lift Arm Gate Closed
If the PRG will not open from a mechanical condition, remove the power supply as previously
described and enter the rear of the vehicle from the back seat. Remove the lift arm at the gate
and open the gate from the emergency release. Exit the vehicle from the rear.
Emergency Release
Note: Access to the emergency release is gained by removing the cover panel and
pushing on the indicated lever towards the driver side of the vehicle.
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“Memory Height” Learning Procedure
Memory Height Button Closer Switch
Note: The ignition should be off and the PRG should be closed (Memory Height Button
should be “OFF”).
1. Open the rear gate by using the power rear gate function.
2. With the rear gate at the desired height, stop it by using the power rear gate function (use
any control button to stop the gate).
3. Press the memory switch to select the “ON” status (Lowest Position).
Power Rear Gate Button
4. With the rear gate at the desired height, press and hold the power rear gate button on the
inside edge of the rear gate until an electronic chirp is heard and the hazard warning lights
flash three times.
The electronic chirp and the flashing hazard warning lightts confirm the selected rear gate height
has been registered.
It is possible to register the height from approximately 12 in (30cm) or more from the completely
closed position.
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Retrieval of the rear gate height:
To open the rear gate and stop it at the registered height, perform the following procedure.
1. Press the memory switch to select the ON status.
2. Press and hold any of the power rear gate switches. Even if any of the power rear gate
switches are pressed and held while the memory switch is in the OFF status, you can stop
it at the registered height by pressing the memory switch to select the ON status before the
rear gate reaches the registered height.
Operating Characteristics
Note: The rear gate will open to the position that is stored in the memory function
even if the rear gate is opened by the reverse (Safety) function.
Rear gate drop prevention function
If, while fully opened via the power rear gate function, the rear gate is lowered by the weight of
snow and such, an electronic chirp will sound and the rear gate drop prevention function will apply
braking to the rear gate so that it prevents a rapid closure of the rear gate.
Note: If there is snow on the rear gate only use the power rear gate function after
removing the snow.
If you close the rear gate manually just after the rear gate is fully opened using the power rear
gate function, the rear gate drop prevention function will operate, detecting a rapid closure of the
rear gate and apply braking to the rear gate. In this case, this is not a malfunction.
If the reverse function is operated 3 times consecutively, automatic opening and closing of the
power rear gate function will be canceled and the rear gate will stop opening or closing suddenly.
Whether the rear gate opens or closes depends on the rear gate height when automatic operation
is ceased. Be careful that the rear gate does not hit anyone’s head or face, etc. and that fingers
and baggage, etc. are not caught in it.
Take care not to damage the touch sensors. Otherwise, the reverse function may cease to operate.
If, while opening or closing using power rear gate, the rear gate catches persons or baggage or
hits an obstacle, an electronic chirp will sound 3 times and the rear gate will operate as follows:
When opening the rear gate: The rear gate will automatically close.
When closing the rear gate: The rear gate will automatically open.
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The power rear gate operates only when all of the following conditions are satisfied.
1. The vehicle is stopped completely.
2. The outside temperature is within a specified range.
3. The ignition switch is in the “LOCK”/ “OFF” or “ACC” position. Or, the ignition switch is in
the “ON” position and the parking brake is applied (MT models)/the select lever is in the
“P” position (CVT models).
NOTE: If the power rear gate button is pressed repeatedly while the power rear gate is
operating, the system may ignore the button operation in order to avoid being
damaged. Do not press the button unnecessarily.
It is not possible to stop the rear gate temporarily while opening between the
completely closed position and approximately 12 in (30 cm) open. If you press
one of the power rear gate buttons briefly during this range, the rear gate will be
closed.
If the vehicle starts to move while the power rear gate is operating, the system
sounds a buzzer and closes the rear gate automatically. At this time, if the
system detects jamming, it will deactivate the power rear gate and the rear gate
will not be closed. If this occurs, close the rear gate via regular procedures.
If you try to open the rear gate using the power rear gate function immediately
after closing the rear gate using the power rear gate function, an electronic chirp
will sound and the rear gate will not open. Wait for a while before trying to open
the rear gate.
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NOTES:
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June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Supplemental Restraint System (SRS)
The 2015 Legacy and Outback Supplemental Restraint System (SRS) has been designed to
conform to the new body interior layout while meeting the newest in Federal Motor Vehicle Safety
Standards.
SRS Airbag Components include the following:
Dual Deployment Driver Front Airbag
Dual Deployment Passenger Front Airbag
Single Deployment Curtain Airbags, Left and Right Side
Single Deployment 2 Chamber Front Seat Side Airbags, Driver and Passenger
Single Deployment Front Seat Cushion Airbags, Driver and Passenger
Front Seat Shoulder Belt Pretensioners, Driver and Passenger Side
SRS Frontal airbag SRS curtain airbag
SRS side airbag
SRS side airbag
SRS seat
cushion airbag
SRS seat
cushion airbag
Airbag Configuration
Note: The 2015 Legacy and Outback are not equipped with Knee Airbags or Lap Belt
Pretensioners.
(1) Plate door
(Only in North America)
(2) Side airbag sensor
(3) Curtain airbag sensor
(4) Airbag control unit
(5) Front door pressure sensor
(Only in North America)
(6) Front sub sensor
(6)
(5)
(4)
(1) (2)
(3)
Sensor Locations
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Airbag components
The two front Sub Sensors are now located more to the center of the vehicle, under the hood stopper
bumpers. Always use the correct bolt to secure the sensor to the vehicle body. Bolts that are too
long will change the accuracy of the sensor as it will make contact with other body components.
Front Sub Sensor
A new Front Door Sensor has been installed to the vehicles’ SRS systems. The sensor detects
changes in air pressure in the chamber that exists between the outer and inner door walls. An
Impact to a door changes the shape of the outer wall and changes the air pressure that exists in
the chamber at the instant of impact. A plastic door plate has been installed over a portion of the
inner wall to restrict the volume of air that would be displaced during a collision. This improves
the sensitivity of the Front Door Sensor.
Door Panel Front Door Sensor
Air enters the sensor through the funnel shaped duct and directs the air to a pressure sensor
located inside the sensor.
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Internal View Front Door Sensor O-ring Front Door Sensor
The back side of the sensor is equipped with an O-ring to prevent air from leaking into the back
side of the sensor during collision. Never re-install a sensor that has been removed as the sealing
qualities of the O-ring will be reduced.
The Front Seat Side Airbags
The Front Seat Side Airbags have been redesigned to provide two protection zones. The
construction of the airbag now includes two chambers that provide a high pressure lumbar area
protection zone and a softer low pressure chest and rib protection zone.
Chest chamber
Lumbar
chamber
Side Airbag Design Side Airbag
The airbag is provided with two paths for the expanding gas to flow as the airbag deploys. The
lower chamber of the airbag is stitched at a height that allows a tighter protection zone to form. The
upper chamber has a potentially higher volume area and forms a softer zone during deployment.
Both chambers are filled at the same time and from the same inflator.
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Seat Cushion Airbag
The driver and passenger front seat are equipped with a seat cushion airbag.
If a frontal crash occurs, the inflation of the airbag inside the seat gives backward pressure to
the chest and reduces chest compression from the seatbelt. Moreover, the airbag prevents the
waist from sinking in a frontal collision and reduces abdominal compression by the seatbelt, thus
enhancing the restraining force of the seatbelt.
Seat Cushion Airbag Location
Normal Front Collision
Note: Seatbelts must be buckled before Seat Cushion Airbags will deploy. Input
signals from the seatbelt switch carry the “buckled” signal to the SRS control
unit.
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The construction of the Seat Cushion Airbag provides lift to the forward section of the airbag
and allows for expansion in a separate chamber to the rear of the airbag. No exhaust ports are
provided which allows for an extended inflation time.
Seat Cushion Airbag
The Seat Cushion Airbag can be replaced on the driver seat after deployment without replacing
any other seat components. If the Seat Cushion Airbag deploys on the passenger side, the entire
lower seat assembly must be replaced.
Normal Seat Deployed Seat Cushion Airbag
Note: The photographs above have been staged to show the airbag inflation shape.
The final shape will be determined by the weight of the driver which will displace
more of the expanding gas towards the front of the seat cushion.
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NOTES:
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Curtain Airbag
The protection area of the airbag has been expanded to improve protection of front and rear seat
occupants. The inflator is now located in the center of the B pillar and provides faster deployment
of the airbag.
Curtain Airbag Shape
A new clip is utilized to secure the Curtain Airbag to the vehicle body. The clip must be removed in
a precise method to avoid damage to the airbag and vehicle body. The inside of the clip is made
with 2 chambers that guide a locking tab expander into the lock position.
Curtain Airbag Clip 2 Chambers
The locking tab expander itself is constructed with positioning tabs that permanently lock the
locking tab expander to the body of the Curtain Airbag Clip.
Positioning Tabs New Curtain Airbag Clip
New Curtain Airbag Clips are assembled and delivered in an unlocked position. Do not push the
locking tab expander inward until all parts are properly installed to the vehicle.
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The Curtain Airbag Clips secure fabric and plastic hangers of the Curtain Airbag to the vehicle body.
The clips must not be re-used. Always replace a Curtain Airbag clip once it has been removed.
Close-up, Installed Clip Wide View, Curtain Airbag
The thickness of the vehicle body at the Curtain Airbag attachment point is thin and can be
deformed if the Curtain Airbag Clip is removed incorrectly. Care must also be taken to prevent
damage to fabric hangers of the Curtain Airbag.
Fabric Hanger
Replace the Curtain Airbag if a fabric hanger is torn or damaged.
Note: Refer to the appropriate Subaru Service Manual for safe and proper Curtain
Airbag removal.
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Begin removal of the Curtain Airbag clip by cutting a “V” shaped notch deep into the top and bottom
side of the clip. This takes away the locking points of the locking tab expander.
Next, remove the locking tab expander by gripping the expander with a thin pair of needle nose
pliers and pulling outward gently.
Cutting “V” Shaped Notch Removing Locking Tab Expander
Note: Do not re-use a locking tab expander after it has been removed.
The next step is to compress the locking tabs of the Curtain Airbag Clip, one at a time, sliding
each one past the vehicle body.
Locking Tab Expander Compressing Locking Tab
A thin screwdriver or a similar tool is required to fit in the small groove made onto each locking
tab. The “V” shaped notch, cut into the Curtain Airbag Clip in an early step, allows the screwdriver
to be moved upward and downward to compress the locking tab.
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While compressing the locking tabs, slightly pry outward on Curtain Airbag Clip on the side that
is being compressed. Perform this procedure on the top and bottom side of the clip.
Removing Clip
Install new Curtain Airbag Clips only after all Curtain Airbag hangers have been double checked
for proper position. Press the new clip into place until the locking tabs are correctly positioned.
Installing New Clip Seating Locking Tab Expander
Next, place a screwdriver over the locking tab expander.
Locking Tab Expander Installed
Push the expander inward until the positioning tabs of the expander lock into place.
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Occupant Detection System
The occupant detection system consists of a sensor mat (bladder) installed under the passenger
seat cushion, seatbelt buckle and seatbelt tension sensor attached to the passenger seat seatbelt
anchor. Based on the sensor output and information of the passenger seat belt buckle switch, the
system judges the state of the occupant in the passenger seat.
Based on the information on the occupant in the passenger seat, the airbag ECU controls the
deployment / non-deployment of the passenger seat airbag and the lighting of the passenger seat
airbag ON/OFF indicator, and transmits to the ODS Operation Light information as to whether the
occupant in the passenger seat is wearing his/her seat belt.
Note: If the Seat Belt Tension Sensor detects high tension, the Seat Cushion Airbag
and Passenger Front Airbag will not deploy.
The ODS operation light has been relocated to headliner trim, near the rear view mirror.
(2)
(3)
(4)
(5)
(1) Airbag ON/OFF indicator (4) Belt tension sensor
(2) Buckle switch (Passenger seat) (5) Occupant detection control unit
(3) Occupant detection control unit
(1)
ODS Operation Light and ODS Sensors
NOTES:
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Front Passenger Seat Construction
Cushion pad and cover
(Option: with seat heater)
Seat cushion airbag
Occupant detection sensor
(Bladder type)
Passenger Seat Construction
Note: The seat cover, seat cushion and heater can be serviced. If problems with the
ODS sensor, or cushion airbag exist, replace the lower seat assembly.
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Deployment Logic
The SRS and ODS control unit uses input from all of the SRS sensors to determine individual
and group control deployment of all SRS components. The new mounting positions and design
of the SRS sensors provide very precise impact detection, allowing the best deployment control
for occupant protection.
The following examples show possible deployment combinations, but do not show all possible
combinations.
1 2
3 4
5 6
9 10
7 8
1) Driver front airbag
2) Passenger front airbag
3) Driver seat cushion airbag
4) Passenger seat cushion
airbag
5) Driver side airbag
6) Passenger side airbag
7) Driver shoulder
belt pretensioner
8) Passenger shoulder
belt pretensioner
9) Left curtain airbag
10) Right curtain airbag
SRS Component Layout
Frontal center collision Frontal offset collision
(With or without ODS Input, excluding Tension Sensor)
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Side collision towards front with small diameter object Side collision towards front with large surface area
object
Side collision towards rear Rollover
Frontal center collision with front seat passenger
Note: Seatbelts, Seatbelt Tension Sensors, and ODS must be at the correct values for
deployment of the SRS components pictured above.
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Additional Information
1. Control of curtain airbag and pretensioner operation in a roll-over:
Rollover sensing has been applied to the Legacy. This control meets the requirements for
preventing the occupants from being ejected outside the vehicle under FMVSS 226 in North
America.
2. Fuel cut control
In addition to frontal and side collisions, rear end collisions were added to the conditions
of fuel cut signal output.
When a frontal, side, or rear end collision has been judged, the crash detection signal is sent
to the ECU via the CAN. Triggered by this signal, the ECU instructs the fuel cut operation.
SRS Control Unit
Note: The SRS control unit is located more towards the center of gravity of the vehicle,
(between the front seat belt buckles), under the center console.
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NOTES:
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Chassis
Introduction
The front and rear suspension for the 2015 Legacy and Outback have been improved to provide
enhanced handling, durability, vibration reduction and a more comfortable experience for the driver.
Front Suspension Key Changes include:
– Front strut mounts thickened and springs optimized
– Front struts redesigned
– Front stabilizer link layout changed
– Front control arm width and rigidity increased
– Control arm bushings (rear) sealed and new bracket used
Front strut mounts thickened
and optimized springs
Front strut redesigned
Front Stabilizer link layout
changed
Front Control arm width
and rigidity increased
Control arm bushings
(rear) sealed and
new bracket used
Front Suspension
Front Stabilizer Link
The front Stabilizer link location has been moved from the control arm to the strut housing. This
increases roll stiffness and improves handling.
Front Stabilizer Link
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Control Arm Bushings Rear
The rear control arm bushing layout has been changed and a sealed style bushing is used to
reduce vibration. The movement of the rear bushing now allows for front-to-back movement as
compared to vertical movement of previous models. A new aluminum bracket is now used for
weight reduction.
Front Control Arm
2014MY Rear Bushing 2015MY Rear Bushing
Note: Verify the orientation of the bushing and the grooves on the control arm bracket
before installation.
Front Arm Left Hand Front Arm Right Hand
Bushing
orientation
Bushing
orientation
Grooves Grooves
Rear Bracket and Bushing Orientation Rear Bracket Grooves
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Rear Suspension
Rear Suspension Key Changes Include:
– Rear stabilizer bar mounts moved outward
– Rear shock mounts and springs optimized
– Rear dampers redesigned
– Rear sub-frame support extended
– Rear lateral arm shock mounts moved outward 10mm
– Rear housing camber changed (Outback)
– Sub-frame bushings stiffened
Rear Stabilizer
bar mounts
moved outward
Rear shock mounts
and springs optimized
Rear dampers
redesigned
Rear sub-frame
support extended
Rear housing camber
changed (Outback)
Rear Lateral arm shock
mounts moved outward
10mm
Sub-frame
bushings stiffened
Rear Suspension
Alignment
Alignment specifications have been changed to improve rear grip and steering response. Additional
toe-in and negative camber have been added to the rear specifications.
Model Sedan Outback
Model Year New Current New Current
Front Wheel arch height mm (in) 397 (15.63) 395 467 448
Camber –0°15’ –0°15’ 0°00’ –0°20’
Caster 5°51’ 5°55’ 5°02’ 5°15’
Steering angle Inner Wheel 37.6 37.9° 38.6° 37.7°
Outer Wheel 32.8 33.4° 33.8° 33.5°
Toe-in mm
(in)
0±3 0±3 0±3 0±3
(0±0.12) (0±0.12) (0±0.12) (0±0.12)
King pin angle 13°56’ 13°20’ 12°16’ 12°05’
Rear Wheel arch height (in) 381 (15.00) 387 467 (18.39) 453
Camber –1°25’ –1°10’ –1°00’ –0°25’
Toe-in mm
(in)
3±3
(0.12±0.12)
0±3 (0±0.12)
3±3
(0.12±0.12)
3±3
(0.12±0.12)
Thrust angle 0°00’ 0°00’ 0°00’ 0°00’
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Dampers (Front and Rear)
The piston valve has been modified to increase damping force. This improves low speed handling
and high speed comfort.
(1) New model
(2) Current model
(3) Compression
(4) Extension
(5) Damping force
(6) Piston speed
(7) Driving stability area
(8) Ride comfort area
(9) Low speeds
improvement of handling performance
(10) Newly developed valve
(11) High speeds improvement of ride comfort
(12) Traditional valve
Damping force
(6) Piston speed
Driving stability area Ride comfort area
(5)
Dampers
Active Torque Vectoring
Similar to the 2015 WRX and STI, Active Torque Vectoring has been added to the 2015 Legacy
and Outback. This logic uses the VDC unit to apply a slight brake force to the front inner wheel
if understeer is detected by the lateral G-Sensor, Yaw Rate Sensor, Vehicle Speed Sensors, and
Steering Angle Sensor.
Torque Vectoring (Right Turn)
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X-Mode and Hill Decent control have been added to 2015 Outback models only. This is the same
function as 2014 Forester models.
X-Mode Switch
NOTES:
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Tire Pressure Monitoring Systems
The new ATEQ VT 30 TPMS tool (J-51443) has been introduced for all Subaru vehicles. This
serves as a replacement for SST J-51443.
ATEQ VT 30 TPMS Tool (J-51443)
Using the SSMIII, navigate to the TPMS Registration menu. Turn on the ATEQ VT 30 and select
the appropriate vehicle for which you are servicing. Beginning with the L/F Tire, position the VT
30 on the sidewall of the tire just above the valve stem and initialize the trigger cycle by pressing
the button with the red wireless symbol in the lower right of the touchpad. Work in a clockwise
rotation and ensure that all four transmitters have been registered with the SSMIII. After successful
registration of each transmitter, the VT 30 will display transmitter ID, measured pressure, and
frequency data.
TPMS Transmitter ID’s ATEQ VT 30 Display
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EyeSight® (Version 3)
Introduction
2015 Legacy and Outback receive the improved Version 3 EyeSight® Driver Assistance system.
The Version 3 system offers the same features as the Version 2 with the addition of Pre-collision
Steering Assist. Existing features receive several performance enhancements increasing overall
range and response speed.
Performance Area 13MY EyeSight® (Version 2) 15MY EyeSight® (Version 3) Enhancement results
Forward Distance Range 262 ft (80 m) Increased appx. 40% Increased detection distance
Horizontal Range 25° Increased appx. 40% Increased horizontal detection
Camera Recognition Monochrome Color Brake Lamp Recognition
Image Processing engine Base New
Increased durability to environment
(Ex. Sunlight)
The Version 3 EyeSight® cameras have been redesigned to be more compact. However, the
windshield prohibited areas remain the same due to the increased horizontal range. Windshield
repair and Electronic Toll Collection (ETC) areas also remain the same.
Version 3 EyeSight® Cameras
Red Solid line=Version 2
Blue dotted line=Version 3
Camera Comparison
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The Version 3 Cameras are able to detect colors allowing the system to identify brake lamps from
vehicles ahead. Accuracy for pedestrian and bicyclist detection has also been improved.
Bicycle Vehicle
Motorcycle
Adult
Child
Stop lamp
Version 3 Object Detection
The Lane Departure Warning OFF and Pre-collision Braking OFF switches are now located on
the console to the left of the steering wheel. On Version 2 models, these switches were mounted
overhead on the Camera assembly.
EyeSight® OFF Buttons LDW and PCB OFF Switches
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System Features
Adaptive Cruise Control
The Version 3 EyeSight® system features improved adaptation to the deceleration and acceleration
of forward vehicles, vehicles cutting in, and curve control.
Brake lamp recognition Cut in vehicle Curve Control
Adaptive Cruise Function Comparison
Adaptive Cruise Control deceleration becomes faster responding when brake lamps are detected
from the forward vehicle. This produces a more natural deceleration feeling.
13MY EyeSight®
15MY EyeSight®
Distance
Braking Force
Adaptive Cruise Control Deceleration
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Adaptive Cruise Controls functions can be adjusted with the redesigned satellite switches. A new
Following Distance switch has been incorporated. The RES/+ and SET/- function have been
redesigned with a seesaw 4-step type switch. Each direction has a deep and shallow step. A shallow
step will increase or decrease speed 1 mph. A deep step will increase or decrease speed 5 mph.
Adaptive Cruise Control Buttons
Pre-collision Braking Control
Expanded camera distance and horizontal range ability to detect brake lamps have improved the
performance of the Pre-collision Braking feature. As a result, collisions can be avoided when the
speed difference between the vehicle and obstacle is approximately 31 mph (50km/h) or less. This
is compared to 13MY Version 2 systems that could potentially avoid collisions when the speed
difference is approximately 18 mph (30km/h).
13MY EyeSight®
15MY EyeSight®
EyeSight® camera’s
field of view
Crossing
pedestrian
Improvement of 40%
(Distance performance)
Vehicle cutting
into your lane
Improvement of 40%
(Horizontal field of view)
Pre-collision Braking Range
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The vehicle can detect crossing pedestrians and control braking from an earlier stage. Collisions
can be avoided when the speed difference between the vehicle and the crossing pedestrian is
about 4 mph (7km/h) or less (Compared to 2 mph (3km/h) for 13MY Version 2 EyeSight®).
40% improvement
(Horizontal field of view)
40% improvement
(Distance performance)
Pre-collision Braking with Pedestrians
Pre-collision Steering Assist (NEW)
Pre-collision Assist alters the characteristics of the VDC system, increasing the vehicle yaw rate
to improve the drivers ability to avoid a collision.
Obstacles
Without Pre-collision Steering Assist
With Pre-collision Steering Assist
Pre-collision Steering Assist
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Pre-collision Braking Assistance
Pre-collision Braking Assistance provides additional braking force if the system judges that the
braking force applied by the driver is inadequate for the possibility of collision with the object
ahead. This is also enhanced by the increased range and color detection.
Pre-collision Throttle Management
Pre-collision Throttle Management remains unchanged with the Version 3 EyeSight® System.
Lane Departure Warning
Lane Departure Warning remains unchanged with the Version 3 EyeSight® System.
Lane Sway Warning
Lane Sway Warning remains unchanged with the Version 3 EyeSight® System.
NOTES:
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System Layout
The Version 3 EyeSight® system has a similar layout to the Version 2 system. The only difference
is configuration of the brake lights and brake light relay. In the Version 2 system, the EyeSight®
Camera directly controlled the brake light relay. In the Version 3 system, the EyeSight® Camera
sends a request through the CAN to the VDC Unit where brake light functions are controlled.
EyeSight® Version 2 System Layout
TFT
ECM TCM
EPS CM
MAIN COMMUNICATION BUS (CAN)
LDP
OFF SWITCH
PRE-COLLISION
BRAKE
OFF SWITCH
EyeSight
FUNCTION
OFF SWITCH
EyeSight
FUNCTION
SWITCH
CRUISE
CONTROL
SWITCH
CONTROL OF
CRUISE
CONTROL
THROTTLE
CONTROL
SHIFT
CONTROL
BRAKE
PRESSURE
CONTROL
PARKING
BRAKE
CONTROL
STEERING
TORQUE
CONTROL
BRAKE
RELAY
BRAKE
LIGHT
3D IMAGE
PROCESSING
RECOGNITION
PROCESSING
CONTROL
CALCULATION
WARNING
CALCULATION
LEFT
CAMERA
RIGHT
CAMERA
STEREO CAMERA
VDC&EPB CM
STEERING ANGLE
SENSOR/
VEHICLE SPEED
SENSOR
ETC.
TORQUE
SENSOR
ETC.
BODY
INTEGRATED
UNIT
BUZZER
INDICATOR
COMBINATION
METER
DRIVE
OPERATION
SWITCH
ACCELERATOR
SENSOR ×2
BRAKE
SWITCH ×2
EyeSight® Version 3 System Layout
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R137
4
9 10 11 12 13 14 15 16
7 8 TO 1 2 3 5 6
EyeSight® Camera Connector
Terminal No. Content Measuring condition Standard
(R137) No. 1 — — —
(R137) No. 2 — — —
(R137) No. 3 — — —
(R137) No. 4 — — —
(R137) No. 5 — — —
(R137) No. 6  Chassis ground Ignition power supply Ignition switch OFF  ON
Less than 1 V  9 —
16 V
(R137) No. 7  Chassis ground GND Always Less than 1 
(R137) No. 8  Chassis ground Battery power supply Always 9 — 16 V
(R137) No. 9  Chassis ground CAN L Always 1 M or more
(R137) No. 10  Chassis ground CAN H Always 1 M or more
(R137) No. 11 — — —
(R137) No. 12 — — —
(R137) No. 13 — — —
(R137) No. 14  (R137) No. 15 Cruise switch input Cruise switch OFF  ON 0 V  approx. 5 V
(R137) No. 15  Chassis ground Cruise control switch GND Always Less than 1 
(R137) No. 16  (R137) No. 15 Cruise control switch input
No switch operation 3.5 V — 4.5 V
RES/+ OFF  ON
Less than 1 V  2.5 V
— 3.5 V
Following distance setting
Less than 1 V  1.5 V
— 2.5 V
SET/-
Less than 1 V  0.5 V
— 1.5 V
CANCEL OFF  ON Less than 1 V
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Camera Adjustment
The Version 3 Camera Adjustment procedure is almost identical to the Version 2 with the following
differences
1. A new SST Random Chart must be used
2. A new method for establishing the vehicle center line is used
a. New rear plumb bob location (point B)
b. New front plumb bob location (point A)
New SST EyeSight® Random Chart – New EyeSight® SST 87599VA000 (Random Chart) has
been introduced for the Version 3 EyeSight® System. This chart is used only for Version 3 systems.
Mounting height and location is similar to Version 2 systems.
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
87599VA000 RANDOM CHART Used for adjusting stereo camera.
ST87599VA000
Version 3 Random Chart
(1) = Setting reference (vertical
line) and vehicle body center line
(A-B line)
(3) Plumb bob (5) 1000 mm (3.3 ft)
(2) = Setting reference (horizontal
line)
(4) E-F line
(3)
(1)
(5)
(2)
(4)
Random Chart Preparation
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Establishing the center line of the vehicle has been changed. New locations are used to measure
Point A and Point B.
Point A
Point B
Vehicle Center Line
Point A
The front plumb bob location (Point A) has been moved to center clip on the lower side of the front
bumper. Previously, the center of the license plate mount was used.
Suspend the plumb bob with leveling line from front center position of vehicle (center clip on lower
side of front bumper), and mark the position where the plumb bob touches the ground. (Point A)
Leveling line
Plumb bob
Point A
Point A Location
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Point B
The rear plumb bob location (point B) has been moved for Outback models only. Legacy models
still use the center clip under the rear bumper. However, the center clip on Outback models is
offset from the vehicle center. Therefore, a measurement between the two outer clips must be
performed to establish the center point.
(4) Same distance
(4) (4)
Center position
Leveling line
Point B
Plumb bob
Point B Location (Outback)
Point B Measurement (Outback)
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Subaru Rear Vehicle Detection (SRVD)
Introduction
The new Subaru Rear Vehicle Detection System (SRVD), which is standard on the 2015 Outback
2.5i Limited and 3.6R Limited and available for the 2.5i Premium, offers three functions. Blind Spot
Detection detects vehicles on either side of the vehicle, in the driver’s blind spots. Lane Change
Assist detects fast-approaching vehicles in adjacent lanes, and Rear Cross Traffic Alert detects
vehicles approaching from a perpendicular direction while reversing, such as from a driveway.
LED indicators on the side mirrors alert the driver. Rear Cross Traffic Alert uses an indicator in
the rear view camera display.
Subaru Rear Vehicle Detection functions
Blind Spot Detection (BSD)
BSD notifies the driver of vehicles traveling at a similar rate of speed in neighboring lanes behind
the C or D pillars by illuminating an LED indicator in the side mirror. The detection area for BSD
is approximately 23 ft from the rear bumper cover.
Note: If the driver attempts to change lanes by enabling the turn signal while a vehicle
is in the vehicle’s blind spot, a flashing LED indicator in the side mirror will alert
the driver to the potential hazard.
7m(23ft)
0.5m
(1.6ft)
3.8m(12.5ft)
1m(3.3ft)
BSD
BSD Detection Area
Lane Change Assist (LCA)
LCA notifies the driver of fast-approaching vehicles in neighboring lanes by illuminating the LED
indicator in the side mirror. The detection area for LCA is approximately 230 ft from the rear bumper
cover and is based on Time to Collision (TTC) calculations.
Note: If the driver attempts to change lanes by enabling the turn signal while a vehicle
is approaching at a higher speed, a flashing LED indicator in the side mirror will
alert the driver to the potential hazard.
LCA
70m (230ft)
LCA Detection Area
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Visual alerts are issued for any vehicle with a Time to Collision (TTC) of approximately 4.5 seconds.
Large variations in relative speed difference will result in more advanced notice from the LCA
system. See chart below for estimates of relative speed differences versus distance of TTC warning.
Relative Vehicle Speed Difference Inter-vehicular Distance
6.2 mph (10km/h) Within 41 ft (12.5 m)
12.4 mph (20km/h) Within 82 ft (25 m)
18.6 mph (30km/h) Within 139 ft (42.5 m)
24.9 mph (40km/h) Within 164 ft (50 m)
Rear Cross Traffic Alert (RCTA)
RCTA detects vehicles approaching from a perpendicular direction while in reverse. A flashing
LED indicator in the side mirror, a pattern of audible tones, and a flashing indicator in the rear view
camera display alert the driver of potential hazards with a Time to Collision (TTC) of approximately
3.5 seconds.
1 m (3.3 ft)
7 m
(23 ft)
RCTA Detection Area
See chart below for estimates of relative speed differences versus distance of TTC warning.
Relative Vehicle Speed Difference Inter-vehicular Distance
6.2 mph (10 km/h) Within 31 ft (9.7 m)
12.4 mph (20 km/h) Within 63 ft (19.4 m)
18.6 mph (30 km/h) Within 95 ft (29.1 m)
Operating Conditions
The SRVD system functions will operate when all the following conditions are met:
1. The ignition switch is in the “ON” position
2. The SRVD warning indicator and SRVD OFF indicator are turned off
3. The vehicle is driving at speeds above 10 mph (15 km/h) (Except when reversing)
4. The shift lever is in the “R” position (when reversing)
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Driver Alerts
SRVD Approach indicator lights
Side mirror LED indicators promote awareness without interrupting the driver’s line of sight. These
indicators may illuminate or flash during BSD, LCA and RCTA operations.
Side Mirror LEDs
Side Mirror LED OFF Side Mirror LED ON
Note: When affected by direct sunlight, it may be difficult to recognize the SRVD
approach indicator lights.
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7-5 7-6
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Rear View Camera Indicator
RCTA uses the rear view camera to display alerts on the upper corner of the corresponding side
from which a vehicle is detected.
Rear Camera Alert OFF
Rear Camera Alert ON
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7-8
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SRVD Approach Warning Buzzer
An audible warning buzzer can be heard from the Combination Meter during Rear Cross Traffic
Alert (RCTA) functions. This volume can be customized through the Combination Meter.
SRVD Settings SRVD Warning Volume
NOTES:
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The SRVD system will not operate in the following situations:
1. The SRVD OFF indicator is illuminated
2. The vehicle speed is below 10 mph (15 km/h) even when the SRVD OFF indicator is
not illuminated (Except when reversing)
The following may cause the SRVD system indicators to illuminate:
1. Driving close to solid objects such as guardrails, tunnels, and sidewalls
2. Turning at an intersection in an urban area
3. A building or wall exists in the reversing direction
4. On a road with extremely narrow lanes, the system may detect vehicles driving in a
lane next to the neighboring lane
Driving to close to Guard Rail
The Radar sensors may not detect or may have difficulty detecting the following vehicles or objects
1. Small motorcycles, bicycles, pedestrians, and stationary objects on the road or road
side
2. Vehicles with body shapes that do not reflect radar (vehicles with low body height such
as a trailer with no cargo and sports cars)
3. Vehicles that are not approaching your vehicle even though they are in the detection
area either on a neighboring lane to the rear or beside your vehicle when reversing (The
system determines the presence of approaching vehicles based on the data detected
by the radar sensors)
4. Vehicles traveling at significantly different speeds
5. Vehicles driving in parallel at almost the same speed as your vehicle for a prolonged
period of time
6. Oncoming vehicles
7. Vehicles in a lane beyond the neighboring lane
8. Vehicles traveling at a significantly lower speed that you are trying to overtake
Caution: The driver is responsible for driving safely. Always be sure to check the surroundings
with your eyes when changing lanes or reversing the vehicle. This system is designed to
assist the driver by monitoring the rear and side areas of the vehicle during lane change
and reversing. However, you cannot rely on this system alone in assuring safety during a
lane change or reversing. Over-confidence in this system could result in an accident and
lead to serious injury or death. Since the system operation has various limitations, the
flashing or illumination of the SRVD approach indicator light may be delayed or it may
not operate at all even when a vehicle is present in a neighboring lane or approaching
from either side.
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Construction
The Subaru Rear Vehicle Detection system consists of two rear Radar units symmetrically fitted
behind the bumper cover under the rear tail lights.
Radar Units (Legacy) Radar Units (Outback)
Radar unit
Bracket Outback
Bracket Legacy
Radar Unit Mounting
LH Radar Unit (Outback)
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7-14
7-15
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The Subaru Rear Vehicle Detection system is classified as a Short Range Radar system. Each
of the two Radar units contains a Radio Frequency (RF) antenna that emits electromagnetic
radiation in the 24 GHz frequency range. At a distance of 20cm from the sensor, the radiated
power is 0.0027 mW/cm2. This is well below the human exposure protection limit of 1.0 mW/cm2.
The detectable angle from the center of each RF antenna is 75° or 150° total with a range of
approximately 230ft (70m). Regardless if the system is using BSD, LCA, and RCTA, the RF
antennas are always monitoring a 150° angle with a range of 230ft. What differentiates BSD,
LCA, and RCTA is the logic used to estimate relative speed difference versus distance of Time to
Collision (TTC) warning.
SRVD Detection Area
To ensure correct operation of the SRVD system, observe the following precautions:
1. Always keep the bumper surface near the radar sensor clean
2. Do not affix any stickers of other items on the bumper surface near the radar sensors
3. Do not modify the bumper near the radar sensors
4. Do not paint the bumper near the radar sensors
5. Do not expose the bumper near the radar sensors to strong impacts. If a sensor becomes
misaligned, a system malfunction may occur, including the inability to detect vehicles
entering the detection areas
Intersection Intersection
Vertical line
(150mm)
(80mm)
(100mm)
Vertical line
Vary from 100mm to
80mm along character line
Intersection
Vertical line
(100mm) (100mm)
Bumper Prohibited Areas Legacy Bumper Prohibited Areas Outback
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Each Radar unit contains an internal control unit that processes information from the RF antenna
and controls alert decisions. The left and right rear Radar units are distinguished as Master (LH)
and Slave (RH). The Master and Slave Radar units are connected to each other via a private
CAN network where alert decisions are determined. The Master (LH) Radar unit communicates
with the Main CAN for necessary vehicle information and receives a direct input from the console
mounted SRVD “OFF” switch. Each Radar unit has direct control over its respective side mirror
LED indicator.
2 Main CAN +
7 Main CAN –
1 Private CAN +
6 Private CAN –
(1)
(3)
(2)
(6)
(4)
(5)
4 Door Mirror LED
4 Door Mirror LED
10 ECU Ground
10 ECU Ground
5 ING
5 ING
8 ON-OFF SW
F/B
(A)
SRVD System Overview
SRVD LH (Master) Data SRVD RH (Slave) Data
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5 4 3 2 1
10 9 8 7 6
Radar Unit Connector
1 M or more
Terminal No.
Contents
Measuring condition Standard
Radar LH (master) Radar RH (slave)
1 
2 
3 
4 
5 
6  Chassis ground Private CAN L Private CAN L Always 1 M or more
7  Chassis ground Master CAN L — Always 1 M or more
8  Chassis ground Subaru Rear Vehicle
Detection OFF switch
— • Ignition switch ON
• Subaru Rear Vehicle
Detection switch OFF 
ON
Less than 1 V  9
— 16 V
9  Chassis ground — — — —
10  Chassis ground GND GND Always Less than 1 
Chassis ground Private CAN H Private CAN H Always
Chassis ground Master CAN H — Always 1 M or more

Chassis ground — — — —
Chassis ground Left mirror LED output Right mirror LED output When Ignition key Inserted Pulse generation
Chassis ground Ignition power supply Ignition power supply Ignition switch OFF  ON Less than 1 V  9
SRVD “OFF” Switch
A console mounted SRVD “OFF” switch functions to disable the SRVD system.
In the following cases, press the SRVD “OFF” switch to deactivate the system:
1. When towing a trailer.
2. When a bicycle carrier or other item is fitted to the rear of the vehicle.
SRVD Off
SRVD OFF Switch Placement SRVD OFF Switch SRVD OFF Indicator
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7-23 7-24 7-25
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Diagnostics
The “SRVD Disabled” message is displayed when the system is used at extremely high or low
temperatures or when abnormal voltage exists. Once these conditions are corrected, the system
will recover from the temporary stop condition and the indicator will turn off.
SRVD Disabled
SRVD Disabled Indicator
The “SRVD Disabled Sensor Blocked” message is displayed when the detectability of the radar
sensor is reduced. Once the condition is corrected, the system will recover from the temporary
stop condition and the indicator will turn off.
SRVD Disabled
Sensor Blocked
SRVD Sensor Blocked Indicator
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DTC SSM Indication Detection Condition Resetting Condition
B2300
RADAR ASSY B&&S LED short
circuit to earth
This failure occurs if the harness
from the rear side radar through
the door mirror to ground shortcircuits
to ground.
When the ignition is set to ON, the harness
should operate normally.
B2301
RADAR ASSY B&&S LED open
circuit or short circuit to power
supply
This failure occurs if the harness
from the rear side radar through
the door mirror to ground
disconnects or causes a shortcircuit
in the power supply system.
When the ignition is set to ON, the harness
should operate normally.
B2304
RADAR ASSY B&&S ON-OFF
switch adhesion
This failure occurs if the harness
from the rear side radar through
the door mirror to ground shortcircuits
to ground.
When the ignition is set to ON, the switch
should operate normally.
U0073
Control Module Communication
Bus “A” Off
Conforms to “CAN Communication
Control Specification” issued by
DGSD2.
The triggered indication is reset by
normalizing the CAN.
U0074
Control Module Communication
Bus “B” OFF
U0422
Invalid Data Received From Body
Control Module
U0402 Invalid Data Received From TCM
U0401
Invalid Data Received From ECM/
PCM “A”
U0423
Invalid Data Received From
Instrument Panel Cluster Control
Module
U0416
Invalid Data Received From
Vehicle Dynamics Control Module
U0140
Lost Communication With Body
Control Module
U0101 Lost Communication With TCM
U0100
Lost Communication With ECM/
PCM “A”
U0155
Lost Communication With
Instrument Panel Cluster (IPC)
Control Module
U0122
Lost Communication With Vehicle
Dynamics Control Module
B2311
RADAR ASSY B&&S TCM fail
detection
This failure occurs if the system
breaks down due to a failed rear
side radar caused by a failure in
the TCM.
When the ignition is set to ON, the TCM
should operate normally.
B2313
RADAR ASSY B&&S VDC fail
detection
This failure occurs if the system
breaks down due to a failed rear
side radar caused by a failure in
the VDC.
When the ignition is set to ON, the VDC
should operate normally.
B2320
RADAR ASSY B&&S Low Voltage
(less than 9V)
This failure occurs if the voltage
applied to the rear side radar stays
at 9 V or lower for about 5 sec.
When the power supply becomes higher
than 9 V, the triggered indication is reset.
B2321
RADAR ASSY B&&S High Voltage
(more than 16V)
This failure occurs if the voltage
applied to the rear side radar stays
at 16 V or higher for about 5 sec.
When the power supply becomes lower
than 16 V, the triggered indication is reset.
B2327
RADAR ASSY B&&S internal
failure (internal electric circuit)
This failure occurs if the rear side
radar internal failure is detected.
When this failure occurs, basically replace
the radar with a new one.
B2328
RADAR ASSY B&&S internal
failure (RADAR misalignment)
This failure occurs if eccentricity
is detected in the rear side radar
axis.
Adjust the axis of the radar.
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DTC SSM Indication Detection Condition Resetting Condition
B2329
RADAR ASSY B&&S uncompleted
RADAR alignment
This failure occurs if the axis
adjustment by the SSM in the rear
side radar has failed.
Adjust the axis of the radar.
B2340
RADAR ASSY B&&S high ambient
temperature (more than 85°C)
This failure occurs if the temperature
inside the rear side radar
moves out of working temperature
range.
When the internal temperature returns
within the working temperature range, the
triggered indication is reset.
B2341
RADAR ASSY B&&S degradation
of detecting performance
This failure occurs if radar irradiation
is blocked or radar reflection
cannot be received.
When the radar properly irradiates or
receives the reflected signal, the triggered
indication is reset.
B2350
RADAR ASSY B&&S Communication
error between Master and
Slave
This failure occurs if there is any
trouble between the Master and
Slave in the rear side radar.
When the ignition is set to ON and the private
CAN operates normally, the triggered
indication is reset.
Radar Axis Alignment
Alignment of the Radar Axis is performed after removal/installation or replacement of a SRVD
Radar unit. This includes body repairs or the replacement of a mounting bracket.
Note: This procedure outlines the Radar Axis Alignment for the Master (LH) Radar
unit. Alignment of the Slave (RH) Radar unit is accomplished with the same
procedure on the opposite side of the vehicle.
Secure an open and level area with 13.12 ft (4m) from the rear and side of the vehicle.
13.12 ft (4m) 16.41 ft (5m)
13.12 ft (4m) 16.41 ft (5m)
Radar Axis Alignment Area
Caution: No large metallic objects (other than SST Radar Reflector) or persons should be present
in the Radar Axis Alignment area during the procedure.
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Point A
Suspend a line with plumb bob from the center of the rubber cap located in drivers side
torque box gauge hole, and mark Point A on the floor with tape.
Torque Box Hole
Torque Box Hole
Point A
Point A Set-up (Artwork)
LH Torque Box Hole Point A
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Point B
Suspend a line with plumb bob from the center of the vehicle rear, and mark the center
point on the floor with tape.
1. Remove the clip located in the vehicle center at the rear bumper.
2. Thread a line with plum bob into the hole
3. Mark Point B on the floor with tape.
Point B
Legacy Clip
Outback
Clip
Clip
Point B Set-up (Artwork) Point B
4. Using a strong string or soft tape measure, locate the point at which L1 and L2 intersect
based on the corresponding body style.
Radar Reflector
Radar
Unit
Point A
Point B
L1
L2
Alignment Preparation (Artwork) Alignment Preparation
Sedan Outback
Left Right
L1 L2 L1 L2 L1 L2
Length 4,420 mm 2,025 mm 4,430 mm 2,100 mm 4,430 mm 2,005 mm
(174.02 in) (79.72 in) (174.41 in) (82.68 in) (174.41 in) (78.94 in)
Note: Point B on Outback models is offset from the center of the vehicle. Therefore, a
different length for L2 is used from side to side.
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7-34 7-35
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5. Prepare SSTs J-51658 (Radar Reflector) and J-51662 (Stand).
Radar Reflector
6. Using the stand, set the Height of the Radar Reflector to the corresponding vehicle
body style.
(a)
(b)
(a) Legacy 26.97in. ± 0.39in
(685mm ± 10mm)
(b) Outback Height 31.5in ± 0.39in
(800mm ± 10mm)
Radar Reflector Radar Reflector Radar Reflector Height
Different Heights (Artwork) and Stand
Center of the
Pyramid
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7-37 7-38 7-39
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7. Suspend a line with plumb bob to align the rear of the Radar Reflector pyramid with the
convergence point established by L1 and L2.
Radar Reflector Pyramid Plumb Bob Point Radar Reflector and Stand
8. Without disturbing the alignment of the Radar Reflector, carefully aim the center of the
pyramid at the Radar unit location. A slight amount of angular error is allowed.
Radar Reflector
Ra d ar Un i t
Radar Reflector Aiming Angle Aiming Radar Reflector
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7-43
7-44
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SSM Procedure
Note: Turn the Ignition switch to the ON position. Wait for 10 Seconds
SSMII Work Support
Incorrect preparation of the Radar Axis Alignment will generate the following message:
Radar Axis Alignment
Please turn IGN_OFF
Radar Adjustment Unsuccessful
Please turn IGN_OFF
Perform Radar Axis Alignment again
[axis adjustment result]
Radar Alignment Successful
Angle Gap-3.0
Quantity Object Reflection 46dB
Please push OK
Radar Alignment Unsuccessful
Radar unit angled toward front
Please check Radar Reflector
preparation, Radar bracket, and
Radar bracket installation to the
vehicle body.
Radar Alignment Unsuccessful
Radar unit angled toward rear
Please check Radar Reflector
preparation, Radar bracket, and
Radar bracket installation to the
vehicle body.
Radar Alignment SSMIII Messages
Note: “Quantity of Object Reflection (dB)” is a value to express radar signal strength
and is used for research purposes only. This information is not provided for
technician diagnostics.
7-45
7-46
7-47
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If the result of the Axis Alignment is out of the permissive range, it is possible that the reflector
position may be incorrect or the Radar unit bracket/mounting location may be deformed.
The maximum allowable misalignment of the Radar unit is ±5°. If this value is greater than ±5°
then bent or damaged components exist.
+5°
-5°
Radar unit center line
Radar Alignment
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NOTES:
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Brakes
The 2015 Legacy and Outback are equipped with a new rear braking system and parking brake.
Classified as a caliper integrated Electronic Parking Brake (EPB) system, the new rear brakes
provide normal hydraulic braking functions and parking brake features for the following:
– Parking Brake
– Hill Holder*
– Stay Stop Control for Eyesight*
– Emergency Brake
– Sliding Prevention
– Temperature Compensation
Note: Automatic Release Control, for the EPB is identical to the current model year
Legacy and Outback.
Note: There is no manual release for the EPB.
Rear Brakes Electronic Parking Brake
Caution: Servicing of the rear brake pads requires the use of the Subaru Select Monitor or
generic caliper tool. Brake pad servicing will be covered later in this chapter.
EPB Switch
* Operation is same as current models.
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8-3
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The EPB activation and release switch is located on the center console behind the shifter. Pull
up on the switch to activate the EPB. Step on the brake pedal with the engine operating or the
ignition on and push down the switch to deactivate the EPB.
Specifications
Model Outback
Sedan
2.5 L 3.6 L
Front Ventilated disc 17” Ventilated disc 16” Ventilated disc 17”
Rear Ventilated disc 17” (Caliper integrated EPB)
The rear brake caliper is fixed to the caliper mounting bracket on the front side by a spring clip. The
spring clip can be ordered as a separate part. Replace the spring clip if it is deformed or damaged.
Rear Caliper Caliper Spring Clip
The spring clip must be able to slide smoothly across the mounting bracket as the outer pad wears.
If the spring clip movement is restricted, premature inner brake pad wear will occur. The back side
of the rear brake caliper is secured to the mounting bracket with two internal hex drive guide pins.
Spring Clip OFF Guide Pins
The guide pins allow the caliper to float on the mounting bracket, providing for automatic clearance
adjustments as the brake pad linings wear.
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8-6 8-7
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Rear Brake Pads
A serviceable dust seal is installed over the end of the piston. Special Tool SST 99099AL000 will
be shipped to all dealers as an essential tool.
Piston and Dust Seal Removing Seal
Dust Seal And Installation Tool
8-8
8-9 8-10
8-11
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EPB Construction and Operation
Caliper (Artwork)
The EPB operates from the movement of a brushed DC voltage motor which is controlled by the
Hydraulic Control Unit. A series of worm gears and reduction gears provide bidirectional movement
of a ball nut that is keyed to the hydraulic piston. If the EPB is activated, the ball nut is screwed
downward into the back face of the hydraulic piston and the piston moves into the inner brake pad.
The pushing force pulls the caliper inward which pulls the outer brake pad into the rotor. When
the EPB is released, the ball nut is reversed and the square cut caliper seal pulls the piston away
from the inner brake pad and releases tension to the caliper and the outer brake pad.
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Note: The caliper and motor are not serviceable. Do not disassemble for inspection or
diagnosis. Calipers and motors are available as replacement parts and can be
ordered separately or as an assembly.
A dust seal O-ring is positioned around the circumference of the caliper to seal the motor to the
caliper. This O-ring should be replaced if the motor is ever removed from the caliper.
The motor output gear is splined to the ball nut worm gear.
Dust O-ring and Ball Nut Worm Gear EPB Motor Drive
The ball nut moves up and down on the threads of the worm gear to apply and release mechanical
pressure to the back or inside face of the hydraulic piston.
Worm Gear Ball Nut and Piston
Note: The physical fit of the ball nut to the piston provides areas that can trap air. Air
bleeding procedures are the same as existing models. Brake pedal stroke length
should always be checked after installing a new caliper or brake component to
ensure all air is removed from the brake system.
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The ball nut is constructed of many ball bearings and keeper springs that provide for smooth
movement and strength. A flat edge made onto each side of the ball nut keys into the notches
made into the inside of the hydraulic piston.
Ball Nut Bearings Piston Internal View
As the piston moves towards the inner brake pad, the serrations machined into the outer face of
the piston bite into the inner brake pad shim (permanently mounted to the brake pad) to prevent
the piston from rotating when mechanical force begins to increase. Do not lubricate or apply
any anti-seize paste to this area.
Piston Serrations Caliper Hydraulic Seals
The notches located at 12:00 and 6:00 in this picture are used to turn the piston clockwise when
the Subaru Select Monitor is not available.
Note: The service notches can be located in any direction and have no affect to
hydraulic or parking brake operation.
The piston must be turned during service work to rotate the ball nut back to a service park position
if the Subaru Select Monitor is not available.
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EPB Electrical Operation and Control
The operation of the EPB at each rear brake caliper is accomplished using two wires that operate
the bidirectional movement of the EPB motors. There are no sensors incorporated into the caliper.
Sensing for apply and release is determined by the amount of amperage measured in the Hydraulic
Control Unit.
MB-8
SBF-15
(B)
B310 VDC CM
i156
i163
R153
GR
C15 W/G
P
W/R
R/Y
Y
5 Y
35 Y/G
34 Y/B
R154
44 Y/L
45 Y
Y/G
Y/B
Y/L
Y
W
R
Y
L
6 G
W/V
33 W/R
16 R/Y
8 BR/Y
G
21 LG/R
46 B
B
B
26 P/G
20 Y/W
19
3
B/G
LG
P
Y
B
W/G
4
1
G
R 2
W 1
R 2
W 1
B16
1
2
BR/Y
P
7 GR
12 W/G
2 B
1 Y
6 P
5 LG
B60
i112
27
28
26
25
B60
i112
1
2
3
4
i128
R40
2
3
5
6
R36
R140
R35
R149 1
2
1
2
23
24
GV
5
B479
J/C
C: i192
C15 W/G
W/G
C: i87 *2
*1
*3
MB-7
M/B FUSE NO. 33
(B)
FB-52
F/B FUSE NO. 10
(IG)
FB-71
F/B FUSE NO. 14
(B)
EPB ON
EPB CONTROL SWITCH
HILL HOLD
SWITCH
BRAKE FLUID
LEVEL SWITCH
REF. TO GND [k]
FB-45
F/B FUSE NO. 3
(IG)
REAR BRAKE
CALIPER LH
REAR BRAKE
CALIPER RH
LOCK RELEASE
AUDIO
EPB Wiring Schematic
During apply control, the polarity of the wires is controlled to turn the ball nut counter clockwise.
This will screw the ball nut into the piston and place mechanical force on the inner brake pad
and pull the caliper inward to force the outer brake pad into the rotor. An initial current spike will
occur as the motor first starts to turn and then level off as the motor turns without opposing any
mechanical force. As the Hydraulic piston makes contact with the inner brake pad, current starts
to increase and continues to increase as the brake caliper is pulled inward. The amperage will
reach maximum level after both brake pads are contacting the rotor with a predetermined amount
of mechanical force.
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EPB ON
Time is measured during the application of the EPB until a pre-established amperage level is
reached. This represents the normal EPB on state. This value is also used to determine how long
to operate the motor in the reverse direction when the EPB is turned off. As the brake pads wear,
the ball nut parks at a lower position on the worm gear. The EPB release motor operation time,
determines the final position.
EPB OFF
Note: The amount of time and amperage needed to release the EPB is always lower
than the application time and amperage due to the reduced work load.
During EPB release, the polarity of the wires to the EPB motor is reversed and the ball nut rotates
clockwise to release the mechanical tension on the inner brake pad and caliper.
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Content
Terminal
No.
(+) — (–)
Input/Output signal
Measured value and measuring conditions
Power supply 5 — 46 10 — 15 V when the ignition switch is ON.
ABS wheel speed sensor
Front LH wheel
Power supply 41 — 46 0 — 18 V
Signal 40 7 — 14 mA: Rectangle waveform
Front RH wheel
Power supply 37 — 46 0 — 18 V
Signal 36 7 — 14 mA: Rectangle waveform
Rear LH wheel
Power supply 39 — 46 0 — 18 V
Signal 38 7 — 14 mA: Rectangle waveform
Rear RH wheel
Power supply 43 — 46 0 — 18 V
Signal 42 7 — 14 mA: Rectangle waveform
Valve relay power supply 16 — 46 10 — 15 V when the ignition switch is ON.
Motor relay power supply 33 — 46 10 — 15 V when the ignition switch is ON.
Stop light switch 17 — 46 1.5 V or less when the stop light is OFF; otherwise, 10 —
15 V when the stop light is ON.
Brake light relay power supply 27 — 46 10 — 15 V when the ignition switch is ON.
Vehicle speed output signal 24 0 12 V pulse
VDC OFF switch 1 — 46 1 Ω or less when the OFF switch is “ON”; 1
MΩ or more when the switch is “OFF”.
Parking brake switch 19 Pulse signal
Parking brake switch 20 Pulse signal
Parking brake switch 21 Pulse signal
Parking brake switch 26 Pulse signal
Rear brake caliper RH 34 Pulse signal
Rear brake caliper RH 35 Pulse signal
Rear brake caliper LH 44 Pulse signal
Rear brake caliper LH 45 Pulse signal
Hill hold switch 6 — 46 10 — 15 V when the hill hold switch is ON.
Parking brake indicator light 3 — 46 0 V when the light is on; 10 — 15 V when the light is off
Brake fluid level switch 8 — 46 10 — 15 V when the ignition switch is ON.
Clutch stroke sensor power supply 11— 46 4.8— 5.2 V
Clutch stroke sensor ground 15 —
Clutch stroke sensor signal 15 Pulse signal
CAN communication line (H) 10 Pulse signal
CAN communication line (L) 13 Pulse signal
Ground 46 —
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Normal Voltage at EPB Motor in OFF Condition
Voltage to the two caliper wires is pulsed at the same polarity which allows for faster control.
The HCU can ground either wire while leaving the other at 12 volts positive to activate the EPB
motor.
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New EPB Features
The Sliding Prevention feature of the EPB allows for self activation of the EPB motor to increase
the tension to the brake pads, if the parking brake had been previously set. Sliding Prevention
is activated if the wheel speed sensors detect vehicle movement within 15 minutes of the EPB
activation.
The Temperature Compensation feature of the EPB functions by calculating brake component
temperature from information obtained by the CAN and HCU. The Ambient air temperature, vehicle
speed, road incline, service brake use frequency, and other vehicle information are considered
when calculating brake component temperature. Higher temperatures equate to expanded parts
which will contract as they cool. This could produce a situation where the initial EPB activation is
not strong enough to maintain vehicle position. Compensation for high temperature is achieved
by two methods;
1. The EPB is activated with the Engine operating or CAN still operating. All necessary data is
available to the EPB control unit (HCU) and the EPB motor applies additional mechanical
force to the brake pads.
2. The EPB is activated with the Engine off and the CAN in sleep mode. Data to determine
brake component temperature is not available to the EPB control unit (HCU). The initial EPB
activation will be limited to learned values. An additional application of the EPB motor will
be self activated by the EPB control unit (HCU) 2 minutes and 30 seconds after the EPB
was initially set. This will tighten any clearances that may have developed from contracting
brake parts.
An Automatic adjustment procedure is performed if no EPB operation is detected. The EPB control
unit (HCU) monitors the driving mileage and will self activate the EPB with the engine off once
every 1864 miles (3000 kilometers). This procedure repositions the ball nut clearance from the
back face of the hydraulic piston and tests the EPB motor drive circuits. The EPB will remain on
after the adjustment. EPB release is accomplished with the automatic release feature or manual
release while pressing the brake pedal.
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Emergency Brake Operation
The EPB also provides for an Emergency Brake function that can be activated while the vehicle
is in motion. Pulling up on the EPB control lever and holding the lever upward will activate the
Emergency Brake. The 2015 Legacy and Outback Emergency Brake will first attempt to slow down
through the use of the normal hydraulic components. The Motor Relay and Valve Relay in the HCU
will activate, supplying hydraulic pressure to all brake calipers (Front and Rear). Once maximum
braking is occurring (just before wheel lock up), the pump will turn off and hold mode of ABS will
maintain the current braking pressure. The EPB motor will activate only after the vehicle speed
drops below a set value.
Emergency Brake ON
If hydraulic pressure cannot be established, the EPB motor will activate immediately. The rear
wheels will lock up and unlock while the EPB switch is held in the on position. The EPB control
unit (HCU) will control the application and release of the EPB based on wheel speed sensor input
and always pulse the two sides together.
Emergency Release of the EPB
If the parking brake cannot be released with the EPB switch (example motor sticking), it is necessary
to remove the parking brake motor and actuator from the caliper body.
How to release
1. Lift the vehicle with a jack and remove the tire.
2. Remove the EPB connector from the motor.
3. Remove the motor attachment bolts (2 x 5 mm hexagon bolt), turn the piston shaft clockwise
to loosen the ball screw and confirm the release of the EPB.
4. Install the motor.
5. Install the tire and put the vehicle on the ground.
6. Release the EPB on the opposite side in the same way.
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Caution: If you loosen the motor attachment bolts with the parking brake engaged, the motor body
will rotate. Use caution to prevent pinching of fingers. Support and hold the actuator and
motor assembly in place and slowly allow it to move to a low tension position before
removing from the caliper.
Caution: If you release the parking brake, the vehicle can start moving. Therefore, check the slope
of the road and be sure the vehicle is securely stopped and front wheels are chocked.
Note: While the motor is removed from the caliper, dust may contaminate the caliper.
Therefore, after releasing the parking brake, install the motor body and move
(drive) the vehicle.
The motor case contacts with
the caliper and stops.
(The motor case turns clockwise
when the bolts are loosened.)
The motor case contacts with
the caliper housing and stops.
(The motor case turns clockwise
when the bolts are loosened.)
Left Side Right Side
Install the new actuator seal after the EPB has been restored.
Retracting Ball Nut
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8-28
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Servicing Rear Brake Pads
Prepare the Subaru Select Monitor and SDI box and navigate to the Work Support of the ABS/
VDC menu. Follow the steps below to correctly park and reposition the ball nut during installation
of new brake pads.
Work Support Brake Maintenance Mode
Note: The EPB must be in the released position before removing rear brake pads.
1. Select “Brake Maintenance Mode” in the SSM III before replacement. (The EPB motor will
rotate in the release direction).
2. Warning: The EPB can be operated with the ignition off, be sure to follow the steps
below to place the EPB in a safe condition.
3. Turn the ignition switch to off. Remove the battery negative terminal or disconnect the EPB
motor harness connector from the EPB. Be sure to reconnect after all work is performed.
4. Push the hydraulic piston manually back into the caliper. Install the new brake pads.
5. After installation, restart the“Brake Maintenance Mode” and make the initial settings of the
EPB.
Note: DTC “C1984” will be generated after selecting and completing “Brake
Maintenance Mode”. Clear the DTC before test driving the vehicle.
Note: The Parking Brake Break In procedure has been eliminated and no Parking
Brake, Break In procedure is required on the new system.
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When the SSM III is not used (In shops that do not have the SSM III):
After removing the pad, turn the piston clockwise (release direction) with the piston rotating tool.
Turning in Ball Nut (Generic tool)
After installing the pad, operate the foot brake to move the piston to proper position. Operate the
EPB 5 times or more (with the parking brake switch) to move the ball screw to the proper position.
(It is prohibited to push the piston out with the EPB and not with the foot brake).
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NOTES:
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Electric Power Steering (EPS)
Introduction
An enhanced Electric Power Steering (EPS) system has been adopted for the 2015 Legacy and
Outback. This design is similar to 2012 Impreza and 2014 Forester models. In addition to a more
accurate and natural steering feel, the adoption of EPS provides a 2 percent improvement in fuel
efficiency over the current hydraulic system.
2015 Legacy and Outback Steering Rack
Major Changes
The EPS system on the 2015 Legacy and Outback features the following differences:
– The EPS Control Unit and Gear Box are now combined into a single assembly.
– The U, V, and W Motor Windings and the Resolver Sensor connections are provided
directly within the Control Unit.
– The Torque Sensor has been changed to a Flux Ring style sensor.
2015 Legacy/Outback
ECU
Impreza/Forester
ECU
EPS Comparison
9-1
9-2
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Electric Power Steering Circuit
Connections from the EPS Rack assembly to the vehicle have been reduced to two. Connector
B205 provides supply voltage and ground to the EPS while connector B203 contains CAN
communication and an Ignition Switch signal.
EPS Wiring Harness
GAP
B40
A: B450
B: B452
W 16
G 8
B/L 5
B/Y 4
L 14
R 6
B B2
1 R A6
2 B A7
3 G A2
4 W A1
P A5
G A10
R
G/Y
L
R A9
R
B/R
W B1
W
G
W
G/Y
B/R
MB-33
SBF-2
(B)
2
1
3
B203 B204
2
1
B205 B206
B451
MOTOR
POWER STEERING CM
DATA LINK
CONNECTOR
FB-54
F/B FUSE NO. 10
(IG)
FB-42
F/B FUSE NO. 19
(IG)
MB-44
M/B FUSE NO. 17
(B)
REF. TO ENGINE ELECTRICAL
SYSTEM [1d] [2d] [3e] [4e]
TORQUE
SENSOR
EPS Wiring Diagram
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The EPS Control Unit and Gear Box are now combined into a single assembly. These components
cannot be serviced individually.
Control Unit Location
Control Unit Connections Control Unit
Drive Motor
The EPS Motor is an eight pole Permanent Magnet Synchronous AC motor. DC power and ground
are supplied through connector B205 where it is controlled via “H” bridge transistors inside the
EPS Control Unit.
EPS Drive Motor (In Vehicle) EPS Drive Motor
9-5
9-6 9-7
9-8 9-9
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Exposed Rotor Magnets Drive Motor Coupling
Connections for the U, V, and W windings are supplied through a bus bar inside the control unit.
Drive Motor Windings U, V, and W Connections
Resolver Sensor
The Resolver Sensor is mounted in the Motor Coupling housing and is press fitted to the motor
shaft. This Resolver uses a 5 tip Rotor where as Impreza and Forester models used a 4 tip Rotor.
Timing for the EPS motor is based on information provided by the Resolver Sensor.
Resolver Windings Resolver 5 Tip Rotor
9-10 9-11
9-12 9-13
9-14 9-15
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Torque Sensor
The Torque Sensor delivers the driver’s demand and force acting on the tires to the EPS Control
Module. This EPS uses a Flux Ring style sensor that detects torque acting on the torsion bar of
the Steering Rack input shaft. The sensor consists of a Magnet Ring, Flux Ring, Flux Collecting
Ring, and Flux Yoke.
Torque Sensor Input Shaft Cross Section
Magnetic Ring
The Magnet Ring, containing alternating North and South poles, is fixed to the Torsion Bar. As
the Input Shaft rotates, resistance from the driver’s demand creates torsion deforming the shaft.
This deformation rotates the Magnet Ring and varies the North and South magnetic flux lines that
are detected in the Flux Ring.
N
S
N
S
N
S
N
S
N
S
N
S
Input Shaft Magnet Ring Magnet Ring Poles
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9-18 9-19 9-20
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Flux Rings
The Flux Rings detect the North and South magnetic fluctuations from the Magnet Rings movement.
The 2 rings are identified as the Main and Sub.
Magnet Ring and Flux Rings
Flux Collecting Rings
The Flux Collecting Rings transfer the North and South magnetic fluctuations from the Flux Rings
to the Flux Collecting Yoke.
Magnet Ring Flux Ring
Flux Ring
Magnet Ring and Flux Rings (Artwork) Flux Rings (Artwork)
9-21
9-22 9-23
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Flux Collecting Yoke
The Flux Collecting Yokes transfer the North and South magnetic fluctuations from the Flux
Collecting Rings to the Hall IC of the Torque Sensor. Based on the Torque Sensors interpretations,
motor direction and torque will be varied.
Magnet Ring
Flux Collecting
Rings
Flux Rings
Flux Rings and Flux Collecting Rings
Flux Collecting Rings Flux Collecting Rings
9-24
9-25 9-26
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Flux Collecting Yoke
The Flux Collecting Yokes transfer the North and South magnetic fluctuations from the Flux
Collecting Rings to the Hall IC of the Torque Sensor. Based on the Torque Sensors interpretations,
motor direction and torque will be varied.
Flux Collecting
Yoke
Hall IC
Flux Collecting Yoke and Hall IC Flux Collecting Yoke and Hall IC
Sensor Removed
9-27 9-28
9-29
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Alignment Collar
The Steering Gearbox shaft is now fitted with a plastic collar for alignment of the universal joint
during assembly.
Alignment Collar Universal Joint Installation
NOTES:
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Diagnostics
Since the Control Unit has been incorporated into the Gear Box assembly, diagnostics have been
simplified. Resolver and U, V, W Motor Winding related diagnostics are no longer necessary as
any faults relating to these components will require a Gear Box assembly replacement.
DTC Item Content of diagnosis
None
Without DTC Normal
“Assist limitation” is displayed
in the current data «EPS
operating condition».
Assist limitation is performed
due to overheat protection
control.
“Overheating protection intervention
history” in current
data display shows 1 or
more.
There are previous records of
intervention to overheat protection
control.
C2511
Torque Sensor Failure 1
(Main)
• Poor connector contact
• Forgot to connect connector
• Faulty torque sensor section
circuit
• Faulty torque sensor coil
C2512
Torque Sensor Failure 2
(Sub)
C2513
Torque Sensor Failure 3
(Much Tolerance)
C2514
Torque Sensor Power Supply
Failure
C2521 Motor Failure 1 (Motor)
• Poor connector contact
• Forgot to connect connector
• Harness open/short circuit
• Motor open circuit
• Power transistor shorted/
open
• Terminal power supply or
ground short
C2522
Motor Malfunction 2
(Resolver)
C2531 ECU Failure 1 (CPU Failure)
Faulty main unit of power
steering control module
C2532
ECU Failure 2 (Peripheral
Circuit Failure)
Faulty main unit of power
steering control module
C2533
ECM Failure 3 (Board Temperature
Sensor Failure)
Faulty main unit of power
steering control module
Inspect harness for
possible damage.
Replace if necessary. If
harness is OK, Torque
Sensor or control Unit
has failed. Replace the
Gear Box assembly.
Replacement of Gear Box
Assembly is necessary.
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C2541
Vehicle Speed Failure(Sensor
Failure)
• Poor connector contact
• Forgot to connect connector
• Harness open/short circuit
• VDC system failure
C2543 Error Passive Status
Defective CAN communication
C2545 EyeSight System Abnormal EyeSight system failure
C2546 EyeSight Value Abnormal EyeSight system failure
C2547
EyeSight Check Sum Abnormal
• EyeSight system failure
• Defective CAN communication
C2548
Vehicle Dynamics Control
Module Abnormal
VDC system failure
C2551 Power Supply Relay Failure
• Power supply voltage malfunction
• Faulty relay contact
U0073
Control Module Communication
Bus Off
Defective CAN communication
U0100
Lost Communication With
ECM/PCM “A”
Defective CAN communication
U0122
Lost Communication With
Vehicle Dynamics Control
Module
Defective CAN communication
U0126
Lost Communication With
Steering Angle Sensor Module
Defective CAN communication
U0155
Lost Communication With
Instrument Panel Cluster
(IPC) Control Module
Defective CAN communication
U0401
Invalid Data Received From
ECM/PCM “A”
Defective CAN communication
U0416
Invalid Data Received From
Vehicle Dynamics Control
Module
Defective CAN communication
U1235
Lost Communication With
EyeSight
Defective CAN communication
U1433
Invalid Data Received From
EyeSight
Defective CAN communication
Conventional
CAN Diagnostics
DTC Item Content of diagnosis
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NOTES:
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Powertrain
FB 2.5
The 175-horsepower/ 174 lb-ft torque 4-cylinder FB 2.5 engine for the 2015 Legacy and Outback
emphasizes manageability in practical use with enhanced medium and low-speed torque. The
engine has been refined focusing on the air intake and exhaust systems. Engine quality has been
enhanced with measures against noise and vibration, weight reduction, and simplification. The
basic casting thickness of the cylinder block was decreased from 3.5 mm to 3.2 mm to reduce
weight while maintaining rigidity.
FB 2.5 Engine
Piston
The crown surface of the piston has been raised increasing compression from 10.0 to 10.3. The
center of gravity and skirt shape have been changed to reduce vibration. Sliding friction has
been reduced by the application of a new coating on the piston skirts. A new PVD (physical vapor
deposition) coating process is used for top compression and oil control rings to aid in abrasion
resistance. Piston ring tension has been decreased to reduce friction and improve fuel economy.
Note: Engine oil and filter replacement for all 2015MY vehicles has been reduced to
6000 miles. The excessive oil consumption rate in the Owner’s Manual remains
at 1 quart every 1,200 miles. Always consult the latest Oil Consumption Test
procedures listed on Subarunet for updated information.
Optimized center
of gravity Raised crown surface
Optimized skirt shape
Redesigned FB 2.5 Piston
10-1
10-2
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Intake Cam Sprockets
The sensing surface for the intake cam position sensors has been changed to an inverted tooth
design. This is a similar design to the 2015 WRX FA 2.0.
INTAKE
Camshaft
Position
Sensor RH
ONE CAMSHAFT ROTATION
INTAKE
Camshaft
Position
Sensor RH
ONE CAMSHAFT ROTATION
2015MY 2014MY
Intake Cam Sprockets
Exhaust Cam Sprockets
Mass has been added to the LH Exhaust cam sprocket to reduce noise from the timing chain. The
RH Exhaust cam sprocket material was changed from stamped to sintered steel.
RH LH RH LH
2015MY 2014MY
Exhaust Cam Sprockets
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10-4
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Exhaust Cam Sprocket SST
New Special Tool 18334AA040 has been added to aid in the removal of the redesigned exhaust
cam sprockets. The new SST functions to extend the reach of existing SST 18334AA020.
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
18334AA020 PULLEY WRENCH
PIN SET
• Used for removing and installing cam sprocket.
• Used for rotating the intake cam sprocket LH.
• Used together with PULLEY WRENCH
(18355AA000).
• Used with the PULLEY WRENCH PIN SET
(18334AA040) when removing and installing the
exhaust cam sprocket.
ST18334AA020
18334AA040
(Newly adopted
tool)
PULLEY WRENCH
PIN SET
• Used for removing and installing exhaust cam
sprocket.
• Used together with PULLEY WRENCH
(18355AA000) and PULLEY WRENCH PIN SET
(18334AA020).
ST18334AA040
18355AA000 PULLEY WRENCH • Used for removing and installing the crank pulley.
• Used for removing and installing cam sprocket.
• Used for rotating the intake cam sprocket LH.
• Used together with PULLEY WRENCH PIN
SET (18334AA000) or PULLEY WRENCH PIN
SET (18334AA020).
• Used with the PULLEY WRENCH PIN SET
(18334AA040) when removing and installing the
exhaust cam sprocket.
ST18355AA000
ST 1
ST 2
ST 3
ST1
ST3
ST2
ST2
Cam Sprocket Tools Exhaust Cam Sprocket Removal
Valve Adjustment
The valves, valve springs, rocker arms, and rocker arm pivots have been refined to reduce
mechanical noise. The valve adjustment formulas have also changed.
A B
2014 DIT FA 2.0 liter formula
Intake side: S = T + 1.54 x (V – 0.13 mm (0.00051 in))
Exhaust side: S= T +1.69 x (V – 0.22 mm (0.0087 in))
2015 DIT / FB 2.5 liter formula
Intake side: S = T + 1.69 x (V – 0.13 mm (0.00051 in))
Exhaust side: S = T +1.87 x (V – 0.22 mm (0.0087 in))
S: Valve shim thickness
required
V: Measured cam
clearance
T: Current valve
shim thickness
Valve Adjustment
Cylinder Head
The intake ports of the cylinder head has a new shape that produces increased air flow and tumble
to improve fuel economy and performance.
2015MY 2014MY
Cylinder Head Ports
10-5 10-6
10-7
10-8
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Intake Manifold & Tumble Generating Valves (TGV)
The construction of the TGVs has been changed from aluminum to resin. The TGVs are now
integrated to the upper intake manifold.
TGVs Intake Manifold Exploded View
The TGV port tract has also been changed to promote increased tumble. When the valve Is closed
on the new configuration, air is forced toward the center of the engine instead of the outside.
2015MY 2014MY
TGV Flow
10-9 10-10
10-11
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Exhaust Manifold
The Exhaust Manifold has been redesigned with new routing and larger diameter piping to improve
catalytic converter function while reducing overall weight.
FB 2.5 Exhaust Manifold
2015MY 2014MY
FB 2.5 Exhaust Manifold Change
Exhaust Gasket
The gasket for the connection between the muffler and the rear exhaust pipe has been changed
to a ring type.
Muffler Gasket
10-12
10-14
10-13
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Fuel Pipe
To improve crash safety, the connection point of the fuel delivery line at the intake manifold has
been changed. Additionally, a new quick disconnect that may be released with or without the use
of a SST has been used.
2015MY 2014MY
Fuel Line Relocation
Fuel Supply Line Fuel Line Connection
Exercise caution in removing the quick disconnect with or without the ST. Please also remember
not to kink the fuel delivery line as it may cause internal damage.
Note: Always properly relieve fuel pressure before attempting to remove fuel lines as
they may be under pressure.
ST
Quick Disconnect Removal
10-15
10-16 10-17
10-18
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Ignition Coil
The ignition coil connectors have been changed to a spring lock type to improve reliability.
Ignition Coil Connector
Ignition Coil Connector (Artwork) Ignition Coil Connector
EGR Cooler
The EGR Cooler has been separated from the engine coolant crossover and replaced with an
external high-efficiency unit. This results in higher rate of exhaust gas recirculation producing
improved combustion efficiency and fuel efficiency.
EGR EGR Cooler
10-19
10-20 10-21
10-22 10-23
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Evaporative Emissions
An Evaporative Leak Check Module is used for the 2015 Legacy and Outback. The internal structure
of the canister has been improved to a honeycomb type, but functionality remains the same.
Evaporative Emissions System Canister And ELCM
To:
Fuel Tank
To: Drain
Separator
To: Canister
Purge
Solenoid (CPC)
Hose Routing
Hose Routing Connection Points
10-24 10-25
10-26
10-27
10-28
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The shape and location of the drain separator has changed. It must be unbolted from the body
before the vent can be inspected or accessed for evaporative system diagnostics.
Drain Separator Removed Drain Separator Location
A new connector is used for the drain separator hose. Use caution when releasing the tab.
Drain Separator Connector
Connection Tabs Depressed Connector Lock Removed Connector Disconnected
10-29 10-30
10-31
10-32 10-33 10-34
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The vent line from the filler neck passes through the body, into the rear cargo area, through the
floor, and finally into the fuel tank.
Filler Neck Vent Line
Vent Line Interior Cover Panel
Vent Line Pass Through
10-35
10-36
10-37
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EZ 3.6 Changes
The EZ 3.6 engine for the 2015 Legacy and Outback is based on same proven platform used in
previous model years producing 256 horsepower and 247 lb-ft peak torque. The EZ 3.6 has been
adapted to function with the Generation 1 High-torque CVT (TR69) while maintaining the same
environmental performance and fuel consumption of the original EZ 3.6 engine. Internally, the
connecting rods have been manufactured with new materials and greater precision and a lower
opening temperature (from 82C to 78C) thermostat has been installed.
EZ 3.6
The V-belt for the EZ 3.6 has been redesigned due to the elimination of the conventional power
steering system. A new manual tensioner is now used.
Nut
Key groove
Shaft Key
EZ 3.6 V-belt Belt Tensioner
Inspection of the V-belt can be performed using a Sonic Belt Tension (Acoustic Belt Tension)
Sonic Belt Tension Gauge
10-38
10-39 10-40
10-41
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Place the microphone of the Sonic Belt Tension gauge within close proximity of the V-belt and
firmly pluck the V-belt in the center of the top length.
Belt Tension Gauge Positioned V-belt Plucked
Repeat three times to obtain an average and compare to Subaru service manual specifications.
1st Sample 2nd Sample 3rd Sample
EXAMPLE: V-belt tension (with Sonic belt tension gauge):
When installing new parts
1080 — 1230 N (110 — 125 kgf, 243 — 277 lbf)
337 — 360 Hz (frequency)
At inspection
570 — 720 N (58 — 73 kgf, 128 — 162 lbf)
245 — 275 Hz (frequency)
NOTE: Always refer to the correct Subaru Service Manual on STIS.
10-42 10-43
10-44 10-45 10-46
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Service & Diagnostics
For FB 2.5 and EZ 3.6 models the Engine Control Module is located in the engine compartment
along the passenger side inner body panel.
ECM Location
The small black rubber button, indicated by the arrow, allows the ECM to sample atmospheric
pressure. Never Press this button as this may damage the waterproofing characteristics of the vent.
ECM Atmospheric Vent
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SST Check Boards
Engine diagnostics are now performed using new SSTs 18460AA050-A and 18460AA050-B.
Check Board Harness SST Identification
Ensure the hinge locks are fully seated before beginning diagnostics.
Check Board Harness Installation
Check Board Harness Unlocked Check Board Harness Locked
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Engine Support Bridge
Engine Support Bridge
A new configuration of the existing SST J-50135 (Engine Support Bridge) has been adapted for
the 2015 Legacy and Outback.
Engine Support Bridge
Remove the air inlet, ducting, and alternator cover.
Engine Covers Installed Engine Covers Removed
Prepare the mount adapters on the exposed threads of the upper strut mount.
Upper Strut Mount Exposed Threads Mount Adapters Installed
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Remove the center rubber strut caps and prepare the lateral bar supports as shown.
Rubber Strut Cap Installed Rubber Strut Cap Removed Lateral Bar Supports Installed
Install the Lateral Bar
Lateral Bar Installed
Prepare new SSTs J-51658 (Engine Bridge Adapter Kit) and place through the provided openings
in the upper radiator garnish. Install the Stanchions with the rubber side facing up.
Prototype SSTs J-51658
Note: Prototypes shown. Actual Tools may vary.
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Radiator Garnish Opening Adaptor Installed Stanchion Installed
Note: SSTs J-50135-5 (Long Stanchions) are used for this procedure. These SSTs are
currently used as part of the BRZ Engine Support Bridge.
Install the longitudinal bars and posts.
RH Longitudinal Bar Installed LH Longitudinal Bar Installed
Install the lifting hooks over the longitudinal bars
Rear Lifting Hook Location Rear Lifting Hook Installed
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SST 18360AA020 (Hanger) must be used for EZ 3.6 Models as a hook point.
CVT00694
ST
SST 18360AA020 H6 Model (ST): HANGER (18360AA020)
Install new SST 18360AA040 (hanger) to provide a front hook location during support or removal
of H4 engines.
Front Hanger Location Front Hanger Installed
Note: SST 18360AA040 (hanger) tool is not necessary for H6 Removal.
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1. Using SST 18363AA050, bolt the hanger to the vacant threaded hole between the A/C
Compressor and Alternator. A handle is also provided to assist in engine removal.
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
18360AA040
(Newly adopted tool)
HANGER Used for removing and installing the water pipe
assembly LH.
18363AA050
(Newly adopted tool)
BOLT Used for removing and installing the water pipe
assembly LH.
ST18360AA040
ST18363AA050
Special Tool Description SST 18363AA050 & SST 18363AA040
Front Lifting Hook Installed
Install the SST J-50137 (Engine Safety Sling and Shackle) under the engine.
Safety Strap Installed LH Frame Rail RH Frame Rail
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NOTES:
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Lineartronic Continuously Variable Transmission Generation 2
(CVT G2/TR58)
Introduction
The CVT G2 is equipped for 2015 Legacy and Outback FB 2.5L models. Compared with current
CVT G2 models this unit receives several refinements to improve fuel economy while reducing
noise, vibration, and harshness.
Oil pump
New tooth shape for pump rotor
Added differential baffle
Changed front differential oil viscosity
Hypoid gear
Final gear ratio changed
Sedan: 3.900 (3.700)
Outback: 4.111 (3.900)
Pulley baffle
Baffle reshaped, converted to resin
Vibration and noise reduced
· Sound insulation cover changed
· Primary bearing rollers
changed to bearings
· Dynamic damper added
Added oil spacer
· Reduced oil agitation loss
· Reduced oil level
TCM
Direct mounting of transmission
Torque converter
Lowered stiffness of damper
CVT Gen 2 (TR58) Enhancements
Shifting Control
New shifting control has been employed to provide smoother acceleration reduce CVT tendencies
such as engine speeds that raise faster than accelerator input.
Engine speed Accelerator opening
New shift control
Current shift control
Accelerator opening large
Accelerator opening small
Time
Shifting Control Comparison
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CVT Fluid
A new CVT fluid (CVTF-II) has been introduced for the CVT G2 that is dark green in color. This
fluid has a lower viscosity than the conventional blue CVT fluid (CVTF-C30).
CVTF-II is initially filled in and required during service for all 2015MY CVT G2 vehicles. CVTF-II
will gradually replace CVTF-C30 for all previous CVT G2 and non-High Torque CVT G1 models.
Note: The High Torque CVT G1 (TR69) still uses the orange colored CVTF-High Torque
fluid. Do not mix this fluid with any of the other varieties.
CVTF-II
CVTF-C30
CVTF
High Torque
CVT Fluids
Internal changes
Baffles have been added internally to reduce oil agitation.
Oil Baffles
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CVT Vent
A new plastic cap has been added to the CVT vent line to reduce debris from entering the CVT
main case.
CVT Vent Line Vent Cap
CVT Cooler
Outback models only are equipped with a CVT Fluid Air Cooler located in front of the condenser.
CVT Fluid Cooler Lines CVT Fluid Air Cooler
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Dynamic Damper
A dynamic damper has been added to the transmission cradle mount bracket. This damper changes
the transfer path of vibrations created by the Variator chain resulting in quieter overall operation.
CVT Dynamic Damper Locations CVT Dynamic Damper
Transfer Clutch Pressure Test
SST 18270AA040 (Socket) has been made available to assist in the installation and removal
of the transfer clutch pressure port plug. This socket is used in conjunction with existing SST
73099SG000 (wrench) to properly torque the plug when reinstalled.
SST 18270AA040 Socket SST 73099SG000 Wrench Wrench and Socket
Pressure Port Plug SST Socket Inserted SST Wrench Fitted
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Note: Tightening torque of the pressure port plug must be recalculated due to the
added length from SST 73099SG000. Always consult the Subaru Service Manual
for the correct procedure.
ST1
ST2
Pressure Port Plug Installation
Transmission Control Module (TCM)
The location of the Transmission Control Module (TCM) has been moved to the top of the valve
body cover. The TCM is now equipped with a waterproof lever lock type connector (same as
15MY WRX).
TCM
TCM Location
TCM Harness TCM Connector
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SST 18460AA040 (Check Board Harness) is necessary for all electrically related TCM
diagnostics.
Note: Same SST as 15MY WRX
SST 18460AA040 Lock Lever Disengaged Lock Lever Engaged
(Check Board Harness)
Note: Ensure lock lever is fully engaged before diagnosis.
Lineartronic Continuously Variable Transmission High-torque
Generation 1 (CVT G1/TR69)
Introduction
The High-torque CVT Generation 1 is equipped on all EZ 3.6 models for 2015 Legacy and Outback
models.
Note: The High Torque CVT G1 (TR69) still uses the orange colored CVT-High Torque
fluid. Do not mix this fluid with any other varieties.
Vibration noise performance
· Sound insulation cover shape changed,
Thinsulate added
Oil Pump
Pump rotor new teeth
Gear ratio (primary reduction gear)
· 1.000
Torque converter
· Fluid performance and damper
characteristics changed
Forward/Reverse planetary
· Structure change (double pinion)
High Torque CVT G1 (TR69) Enhancements
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Forward & Reverse Changeover mechanism
The F&R Changeover has been redesigned to improve vehicle performance in the Reverse range.
Internally, the planetary gear set after the secondary pulley has been reconfigured with different
input, output, and fixing members.
Reverse gear 2015 TR69 2014 TR69 Reference TR58
Input Planetary carrier Internal gear Sun gear
Output Sun gear Sun gear Planetary carrier
Fixing Internal gear Planetary carrier Internal gear
Reverse gear ratio 0.972 0.669 1.024
Planetary carrier type Double pinion Single pinion Double pinion
New Model Current Model
Forward and Reverse Changeover Comparison
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Vent
Similar to the G2 CVT, the vent lines have been redesigned for the High-torque G1 CVT. In
comparison, the High-torque G1 CVT uses 2 breather lines and caps.
CVT Vent Line
TCM
The TCM on High-torque CVT G1 models is located on the passenger side of the engine
compartment. It uses the same SST Check Board Harness for electrical diagnostics.
TCM Location
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Shifter
The shifter for the 2015 Legacy and Outback has been redesigned more compactly to accommodate
increased driver convenience from the center console.
Shifter Console Removed
Trim Separation Trim Separated Remove Retaining Clip
Shifter Rod Removed Shifter Rod Groove Groove Orientation
Note: Install the Shifter Rod as shown in the figure (groove left to right). Installing at a
90° angle may make it possible to shift into other gear ranges without holding
down the shifter button.
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Shift Lock Release
The position of the Shift Lock Release has been moved under the rubber garnish mat in front of
the shifter assembly. The mat must be lifted in order to gain access to the release mechanism.
Shift Lock Release
Shift Lock Release Location Rubber Garnish Lifted
Insert Rod
Release Mechanism Depressed
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