MSA5P0135C – Technician Reference Booklet – Subaru

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Technician
Reference
Booklet
ELECTRICAL SYSTEMS
OPERATION & DIAGNOSIS
MSA5P0135C
June 2013
Module 602

© Subaru of America, Inc. 2013 913-924
© Copyright 2013
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 2013.
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.
Product Material Disclosure
© 2013 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
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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. Alcantara® is a registered trademark of Alcantara S.p.A., and Alcantara is produced by
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BRZ, EyeSight, Impreza, Forester, Lineartronic, Legacy, Outback, Subaru, SUBARU BOXER, Tribeca, and WRX, STI, and XV Crosstrek are
registered trademarks.
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Electrical Systems Operation & Diagnosis Module (602)
Table of Contents
Introduction………………………………………………………………………………………8
LAN/CAN Introduction……………………………………………………………………….8
High Speed CAN Signal Const ruction…………………………………………. 12
Outline of Data Frame……………………………………………………………………… 13
High Speed CAN Communication Circuit……………………………………………. 15
Can High Wire……………………………………………………………………….. 16
Can Low Wire………………………………………………………………………… 16
Open Circuit in Main Bus…………………………………………………………………. 17
Open Circuit in Branch Bus……………………………………………………………… 18
Ground Short of CAN High Wire……………………………………………………….. 19
Ground Short of CAN low Wire………………………………………………………….20
Diagnostic Procedure using HS-CAN DTCs………………………………………..21
CAN Bus B or KAC………………………………………………………………………………22
Low Speed CAN…………………………………………………………………………………..23
Local Interconnect Network (LIN)………………………………………………24
Monitoring of Trouble in the System……………………………………………………25
CAN Trouble Codes…………………………………………………………………25
Combination Meter…………………………………………………………………………..27
Select Monitor…………………………………………………………………………………28
BIU Cust omizing………………………………………………………………………………..29
Body Integrated Unit Customizing …………………………………………….30
(New Items)……………………………………………………………………………30
Keyless Access with Push Button Sta rt Syst em………………………31
Normal Operation……………………………………………………………………………31
Vehicle Entry and Locking………………………………………………………………..31
Ignition and Engine Start………………………………………………………………….37
Key Warning……………………………………………………………………………………41
Wireless Communications………………………………………………………………..42
Collation and Immobilizer…………………………………………………………………42
Headlights………………………………………………………………………………………..43
Lighting Switch……………………………………………………………………….43
Headlight Operation………………………………………………………………..43
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Immobilizer Type A……………………………………………………………………………45
System Construction………………………………………………………………………..45
Key………………………………………………………………………………………………..47
BIU………………………………………………………………………………………………..47
Combination Meter or Engine Control Module…………………………….48
Registration Process……………………………………………………………….48
ECM Replacement…………………………………………………………………………..50
2012 Impreza Immobilizer Type B…………………………………………………….52
Immobilizer System Registration………………………………………………………..56
Engine ECU Registration………………………………………………………………….58
Meter/SCU Registration……………………………………………………………………59
The Registration Number Read…………………………………………………………60
Immobilizer Key ID Deletion………………………………………………………………60
Remote Control Engine Starter Registration………………………………………..61
Keyless Entry…………………………………………………………………………………..64
How To Register the Transmitter………………………………………………………..65
Using the Subaru Select Monitor………………………………………………65
Security System………………………………………………………………………………67
Remote Engine Sta rt Syst em (RES)………………………………………………..69
Tachometer Idle Speed Programming…………………………………………………69
Anti-Grind………………………………………………………………………………75
Starter Motor Operation………………………………………………………….. 76
Accessory Power Supply………………………………………………………………….77
RES Diagnostics ……………………………………………………………………………….78
2010 and Newer Legac y……………………………………………………………………81
Oth er 2010MY and Newer Electrical Advancements…………………82
Multi -Function-Display (MFD) (2014 Forest er)……………………………..83
Power Rear Gat e (PRG ) (2014 Forest er)………………………………………..87
Operation Mode………………………………………………………………………………88
PRG Components and Operation……………………………………………..89
PRG Auto Closer Parked………………………………………………………………….97
PRG Auto Closer Opening………………………………………………………………..98
PRG Auto Closer Closing………………………………………………………………….98
Touch Sensors……………………………………………………………………………… 101
“Memory Height” Learning Procedure………………………………………………. 103
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Electrical Systems Operation & Diagnosis Module (602)
Electrical ………………………………………………………………………………………. 105
2014 Combinati on Meter………………………………………………………………… 110
Subaru Select Monitor III (SSMIII)…………………………………………………….110
Instrumentation/Driver Information………………………………………….. 115
Service Bulletins………………………………………………………………………….. 116
TechTIPS…………………………………………………………………………………………… 118
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Electrical Systems Operation & Diagnosis Module (602)
Supplemental Informati on…………………………………………………………. 123
Audio and Navigati on Syst ems…………………………………………………….. 123
Subaru Tribeca and Legacy Navigation System (2006)………………………. 123
Navigation Components………………………………………………………… 123
Navigation Operation……………………………………………………………. 125
Map Screen…………………………………………………………………………. 125
Tribeca Rear Entertainment System……………………………………….. 126
Vehicle Information……………………………………………………………….. 128
Legacy Audio System (2005-2009)………………………………………………….. 129
Satellite Audio Controls………………………………………………………………….. 130
2008 Navigation Impreza……………………………………………………………….. 131
Navigation Diagnosis (2008)………………………………………………….. 133
2010 Navigation System…………………………………………………………………. 135
2012 Audio and Navigation…………………………………………………………….. 136
2013 Legacy/Outback……………………………………………………………………. 137
Combinati on Meters……………………………………………………………………… 138
(Legacy 2005)………………………………………………………………………………. 138
Subaru Tribeca Combination Meter…………………………………………………. 141
Combination Meter D Check………………………………………………….. 141
2012 Impreza Combination Meter……………………………………………………. 143
Rear Vision Camera……………………………………………………………………….. 144
Supplemental Informati on for Keyless Entry
Regist rati on of Newer Vehicles………………………………………………… 147
2012 to 2013 Impreza (Immobilizer Type B)………………………………………. 147
Registration of Keyless Transmitter with Subaru Select Monitor….. 147
BRZ Keyless Entry System {Mechanical Key}…………………………………… 149
Key Registration……………………………………………………………………………. 149
To register a new keyless ID while keeping existing
registered codes…………………………………………………………………… 149
BRZ with Keyless Access and Push Button Start (KAC)……………………… 151
Key Registration (Additional key ID registration)……………………….. 151
Legacy and Outback Keyless Access and Push Button Start (KAC)…….. 155
Key Registration (Additional key ID registration)……………………….. 155
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Electrical Systems Operation & Diagnosis Module (602)
Introduction
This module will provide information and hands on experience that will provide you with an
understanding of Subaru Electrical System Operation and Diagnosis.
Classroom and lab participation is encouraged so that you may gain the experience needed to
repair Subaru electrical Systems on your first attempt correctly and in a timely manner.
LAN/CAN Introduction
LAN/CAN systems first appeared on the 2005 Legacy vehicles and were phased into new
generations of all existing models. Any new model introduced from 2005 was equipped with LAN/
CAN. The LAN (Local Area Network), a system where multiple computers are linked together with
a single pair of twisted wires, improves equipment operation and functions while reducing the
weight of the vehicle by eliminating a considerable amount of wiring harnesses. LAN (Bus) is a
type of computer network topology or wiring that connects all computers of a system or device.
LAN Topologies
LAN BUS configuration allows communications between computers to continue if one of the other
members of the LAN drops out or malfunctions.
The LAN operates using Controller Area Network (CAN) communications protocol. CAN
communications are frames of vehicle data that deliver and share all vehicle information among
the computers of the LAN. The frames of data are composed of binary code or 0s and 1s that are
coded and decoded by the LAN. The voltage values that represent the 0s and 1s varies depending
on the type of CAN. Two types of CAN will be reviewed in this section of the reference booklet,
the High speed and Low speed CAN. The first LAN/CAN system equipped on Subaru vehicles
was a combination of the High speed and Low speed CAN. As the years progressed a switch to
High speed CAN only was employed.
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Electrical Systems Operation & Diagnosis Module (602)
A Controller Area Network (CAN) signal is composed of two separate pulses. One pulse is low
voltage changing to high voltage and one pulse is high voltage changing to low voltage. Each pulse
has its own wire. The two pulses are sent simultaneously from one control unit to all the other
control units on the Local Area Network (LAN). A control unit receiving the two pulses compares
the potential difference between them.
Potential Difference
Each control module has a transmitter and receiver, which enables bidirectional communication
among the control modules.
Bidirectional Communication
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Electrical Systems Operation & Diagnosis Module (602)
The CAN wires are twisted together along the entire length of the LAN. This protects the integrity
of the CAN signal if an unintentional signal is created in the circuit from an overlying circuit that
induces a magnetic field into the CAN wires. This magnetic field will place noise or an unwanted
voltage signal into the CAN signal.
The polarity of the unwanted signal will usually be constant. Superimposed over the CAN signal
the noise will cancel itself out as the control units only view the potential difference between the
two wires. The more twists per meter a wire has the more it reduces noise.
Noise (ARTWORK)
CAN communications are designed to operate at different speed levels dependant on the operating
speeds of the components on different parts of the LAN. The power train side of the LAN operates
at 500 Kbps (500,000 bytes per second). The body side of the LAN operates at a slower rate of
125 Kbps (125,000 bytes per second). The individual sides of the LAN are referred to as bus. Any
references to the high speed bus are referencing to the power train side of the LAN and the low
speed bus is referring to the body side of the LAN. Communications between the high speed and
low speed bus sides of the LAN are not possible unless the data to be shared is adjusted to the
same rate of speed. This adjusting process is referred to as passing through the gateway. The
gateway function is accomplished by the Body Integrated Unit (BIU). Additional functions of the BIU
control and monitor body related electrical circuits such as the rear defogger and door switches.
Components of the high speed bus include the Engine ECM, Transmission Control Module,
ABS/VDC ECM and the Steering Angle Sensor (Vehicles with VDC). The number of control
modules on the CAN continue to increase. The most recent additions are the Keyless Access and
EyeSight™ Control Modules.
Components of the low speed bus include the Combination Meter and A/C Control Unit (Auto A/C).
The twisted wire connecting all components of the CAN to the BIU must maintain its twisted shape
to help with keeping out electrical interference. Repairs to the wire are allowed but the length of
the twisted wire cannot differ more than 3.94 inches (8 cm).
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Electrical Systems Operation & Diagnosis Module (602)
Speed meter, Tachometer
Warning lamp
Fuel gauge,
Coolant temp. gauge
Combination Meter
Clock, Fuel consumption
Clock
Audio & A/C
operation panel
A/C control
Engine control
Radiator fan control
AT-EGI communication
Slope angle estimation
ECM
Coolant
temp.
Engine
speed
CAN
125kbps
Shift range
TCM
CAN
500kbps
Wheel rotation speed
Vehicle speed
calculation
10.4kbps
VDC/ABS
Steering angle
Keyless entry sensor
control unit
Body integrated
module
Immobilizer
Timer control
(Illumination,
Rear defogger,
Wiper deicer)
Rear fog light
Belt warning
Door lock
Illumination control
Rear wiper
Fuel level
Room lamp
Shift SW
Door SW
Illumination
control
Auto A/C CM
A/C
control
panel
SSM
LAN (ARTWORK)
Notes :
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Electrical Systems Operation & Diagnosis Module (602)
High Speed CAN Signal Construction
When reviewing the service manual you will find references to High Speed CAN and Low Speed
CAN. Each of these has a CAN-High wire and a CAN-Low wire. The differences in operating speed
have already been discussed and now the construction of the two circuits needs to be understood
before fully understanding operational differences.
High Speed CAN (ARTWORK)
When the logic value of the High Speed CAN is 1 there is no potential difference between the
voltage levels of CAN High and CAN Low. The level of both signals is 2.5 volts. When the logic
value changes to a 0 the voltage level of both signals move away from each other. CAN High will
be 3.5 volts and CAN Low will be 1.4 volts. This operation helps to ensure that there is no electrical
interference and the signals received by the various components of the LAN are receiving genuine
signals.
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Electrical Systems Operation & Diagnosis Module (602)
Outline of Data Frame
When data is generated, the signal “Frame” comprises of a “start bit” and a “stop bit” to indicate
the beginning and end of a signal. The frame also includes identification data, main data, and an
error detection code.
Example
Outline of Data Frame Example
(1) Bus idle: Idle state
(2) Frame: Data transmission state
(3) Start bit: Transmission starts
(4) ID bit: It shows what kind of data, for example, TCM, ABS, or ECM.
(5) Data bit: It shows what contents of the data, for example, RPM, shift Position, etc.
(6) Error detection code: It is to avoid wrong recognition of data.
(7) Stop bit: Data transmission stops
“Bus idle” refers to the area between data when no information is being transmitted. At this time,
the data logic value is “1”. Therefore, when the High Speed CAN circuit is 2.5 volts, the system is
at “Bus idle”.,
When a CAN High or CAN Low wire of the High speed CAN carries a transmitted signal, the signal
travels in both directions until the signal reaches the end of the respective wire. At this point the
signal is absorbed by the terminator to the opposite CAN wire.
Notes :
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Electrical Systems Operation & Diagnosis Module (602)
B, C CAN High Wire and E, F CAN Low Wire
For example the CAN High Wire (B, C) receives a voltage signal ranging from 2.5 volts to 3.6 volts.
The signal originates at point A and travels to point B and point C simultaneously.
The potential difference between B, C and E, F during One state is 0 volts but during the Zero
state, the potential difference is 2.2 volts.
During normal operation this potential difference will remain constant.
The voltage output of B, C during the Zero state is actually higher than 3.6 volts but the terminators
allow paths to E, F and 3.6 is the remaining voltage.
The voltage output of EF during the Zero state is actually lower than 1.4 volts but the voltage from
terminators and BC increase the minimum voltage reading to 1.4 volts.
Fail-safe and driveability conditions resulting from problems with the CAN change from year to
year and model to model. These conditions could result in no engine start, limited Electronic
Power Steering operation, non-operative shifter control and many more conditions that control or
monitor normal vehicle operations.
Diagnostics for CAN issues vary as much as the fail-safe and driveability conditions. However;
all High speed CAN circuits share the same circuit structure for the main CAN bus circuit. This
commonality allows the following checks to be performed regardless of model or year of production:
CAN diagnostic checks
1. Resistance
A. Ohm meter
2. Voltage
A. Voltmeter
B. Oscilloscope
3. Communications
A. CAN diagnostic
B. K line
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Electrical Systems Operation & Diagnosis Module (602)
High Speed CAN Communication Circuit
The high speed CAN communication circuit is configured as shown in the illustration.
The communication line connecting the ECM and the VDC is called the main bus, and the
communication lines connecting the main bus and the other control modules are called the branch
buses. Main bus and branch buses are connected by joint connectors.
There is a 120 Ohm resistor in the ECM and VDC CM. They are connected to the circuit as
terminator resistors.
Main bus
Branch bus
ELECTRIC
POWER
STEERING CM
COMBINATION
METER
BODY
INTEGRATED
UNIT
STEERING
ANGLE
SENSOR
VDC CM
120 120
TCM
DATA LINK
CONNECTOR
A/C CM
ELECTRONIC
PARKING
BRAKE CM
ECM
High Speed CAN Resistance Check
The DLC is the most accessible connector to measure the resistance of the main bus. If the DLC
is correctly connected to the main bus, the total circuit resistance of the main bus should be 60
ohms. Two 120 ohm resistors wired in parallel provide two paths for the CAN circuit. Since the
resistors have the same value this simple formula determines the total circuit resistance:
RT = V/N RT = 120/2 RT = 60
RT = Resistance total
V = Value of the resistor
N = Number of like resistors
An open, short, or additional resistance added from a malfunction in a control module will affect
the total circuit resistance. This can be measured from the DLC provided no electrical power is
flowing through the CAN.
Note: The total circuit resistance of a parallel circuit is always lower than the
smallest value resistor in the circuit.
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Electrical Systems Operation & Diagnosis Module (602)
High Speed CAN Voltage Check
Voltage checks from the DLC are possible with the CAN active (Ignition on, Engine off). The
normal voltage readings will vary by year, model, and the amount of data being carried on the
CAN. The CAN high wire and the CAN low wire will always have a different value during normal
circuit operation.
Can High Wire
Checked with an oscilloscope, the pattern of the signals will change from approximately 2.50
volts to 3.60 volts. If you check this value with a voltmeter, the voltage reading will average out to
approximately 2.60 volts.
Can Low Wire
Checked with an oscilloscope, the pattern of the signals change from approximately 2.5 volts to 1.4
volts. If you check this value with a voltmeter, the voltage reading will average out to approximately
2.40 volts.
Note: Any change to the total circuit resistance of the CAN will result in changes to
the volt meter readings for the CAN high and CAN low wire at the same time.
One cannot change without affecting the other.
Notes :
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Electrical Systems Operation & Diagnosis Module (602)
Open Circuit in Main Bus
An open circuit on the main bus can be detected by measuring the resistance between HS-CAN
High and HS-CAN Low. For example, when measuring the resistance between HS-CAN High and
HS-CAN Low at the DLC, the resistance should be 60 Ohms.
When an open circuit occurs on the main bus, the resistance becomes 120 Ohm.
In this case, communication with control modules that are connected after the open circuit becomes
disabled. In the illustration below the BIU cannot communicate with ECM, EPS, and EPB.
Main bus
Branch bus
ELECTRIC
POWER
STEERING CM
COMBINATION
METER
BODY
INTEGRATED
UNIT
STEERING
ANGLE
SENSOR
VDC CM
120 120
TCM
DATA LINK
CONNECTOR
A/C CM
ELECTRONIC
PARKING
BRAKE CM
ECM
Open Circuit in Main Bus
RT = _____________________
1 state 0 state
Voltage CAN High _____________ ________________
Voltage CAN Low _____________ ________________
Control Modules that cannot communicate
________ ________ _ ______ ________ ________ _______ _______
________ ________ _ ______ ________ ________ _______ _______
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Electrical Systems Operation & Diagnosis Module (602)
Open Circuit in Branch Bus
When an open circuit occurs on the Branch Bus, communication with the control module connected
to that branch bus becomes disabled. In the example below, the BIU cannot communicate with
the TCM.
When an open circuit occurs in a branch bus, the resistance between HS-CAN High and HS-CAN
Low will be 60 Ohm, the same as under normal conditions.
Main bus
Branch bus
ELECTRIC
POWER
STEERING CM
COMBINATION
METER
BODY
INTEGRATED
UNIT
STEERING
ANGLE
SENSOR
VDC CM
120 120
TCM
DATA LINK
CONNECTOR
A/C CM
ELECTRONIC
PARKING
BRAKE CM
ECM
Open Circuit Branch Bus
DLC TCM Connector
RT = _____________________ RT = ___________________
1 state 0 state 1 state 0 state
Voltage CAN High_________ __________ Voltage CAN High________ ________
Voltage CAN Low_ ________ __________ Voltage CAN Low________ ________
An open branch in the CAN results in the loss of communications with a control module. This
will result in the loss of all of the data that the control module supplied to the CAN as well
as the control that the control module provided to the vehicle. Diagnostics using resistance
or voltage will determine that the main CAN bus has no problems so you must check at the
affected control module.
Disconnect the affected control module. Failure to do so will result in the monitoring of signals or
voltage outputted from the control module that is not making contact with the CAN.
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Electrical Systems Operation & Diagnosis Module (602)
Resistance checks should show continuity or very low resistance from the DLC to the CAN high
wire and CAN low wire. Check the CAN high wire first. Check from the DLC to the affected modules
electrical connector. Record the value and then check the CAN low wire the same way.
Voltage checks at the affected control module electrical connector should show the same value
monitored at the DLC.
If either resistance or voltage checks indicate that an open circuit exists then the next step is to
locate the CAN Joint Connector that connects the affected control module to the CAN.
Check the CAN Joint Connector for resistance or voltage to the affected module’s CAN wires.
Once the open circuit is located, repair the circuit and recheck the entire CAN operation.
Ground Short of CAN High Wire
When a short to ground occurs on the CAN high wire, the voltage difference between the CAN
high wire and CAN low wire is not high enough for any control module to receive and understand
the data being sent. The voltage level of the CAN high wire must always be higher than the CAN
low wire or communications on the CAN stop.
Main bus
ELECTRIC
POWER
STEERING CM
COMBINATION
METER
BODY
INTEGRATED
UNIT
STEERING
ANGLE
SENSOR
VDC CM
120 120
TCM
DATA LINK
CONNECTOR
A/C CM
ELECTRONIC
PARKING
BRAKE CM
ECM
CAN Low
CAN High Wire
RT = _____________________
1 state 0 state
Voltage CAN High _____________ ________________
Voltage CAN Low _____________ ________________
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Electrical Systems Operation & Diagnosis Module (602)
Ground Short of CAN low Wire
When a short to ground occurs on the CAN low wire, the voltage and data on the CAN low wire is
not received by the CAN. The voltage of the CAN high wire drops because of the parallel wiring
with the terminators. The voltage levels of the CAN high wire will increase enough to allow data
to be sent and received throughout the CAN. The noise insulating properties of the CAN will be
lost but most vehicle systems will continue to function.
Main bus
ELECTRIC
POWER
STEERING CM
COMBINATION
METER
BODY
INTEGRATED
UNIT
STEERING
ANGLE
SENSOR
VDC CM
120 120
TCM
DATA LINK
CONNECTOR
A/C CM
ELECTRONIC
PARKING
BRAKE CM
ECM
CAN Low
CAN Low Wire
RT = _____________________
1 state 0 state
Voltage CAN High _____________ ________________
Voltage CAN Low _____________ ________________
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Electrical Systems Operation & Diagnosis Module (602)
Diagnostic Procedure using HS-CAN DTCs
When communication with a control module becomes disabled, the BIU judges a defect exists
and sets a DTC. The trouble location can be narrowed down by reading the DTC memory.
With the circuit configuration of the figure, the trouble location can be determined as in the range
from area A to area F by reference to the DTC contents of Table.
Area A Area B Area C Area D
Combination
Meter
Steering
Angle
Sensor
VDC
CM
BIU
Area E Area F
EPB A/C CM TCM
CM
EPS
CM
CN CN CN
CN
JC JC
ECM
JC JC
Diagnostic Procedure for HS-CAN
Area A Area B Area C Area D Area E Area F
U1221 U1221 U1221
U1229
U1221
U1229
U122A
U122B
U1222
U1223
U1223
U1201
(U1202)
U1201
(U1202)
U1201
(U1202)
U1201
(U1202)
U1201
(U1202)
U1201
DTC Meaning of DTC
U1221 (CAN-HS ECM no-receive data) BIU receive no data from ECM
U1222 (CAN-HS TCM no-receive data) BIU receive no data from TCM
U1223 (CAN-HS VDC no-receive data) BIU receive no data from VDC
U1229 (CAN-HS EPB no-receive data) BIU receive no data from EPB
U122A (CAN-HS meter no-receive data) BIU receive no data from Combination meter
U122B (CAN-HS A/C no-receive data) BIU receive no data from A/C
U1201 (CAN-HS counter abnormal) Count of communication error exceeds the limit.
U1202 (CAN-HS bus off) This DTC show CAN system is not operating.
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Electrical Systems Operation & Diagnosis Module (602)
CAN Bus B or KAC
CAN Bus B or KAC
Keyless Access and Push Button Start vehicles are equipped with a second High speed CAN.
The name for this new High Speed CAN will be High Speed CAN Bus B or KAC.
This circuit is isolated from the Main CAN Bus and only functions with Keyless Access control
and diagnostics.
The circuit design of CAN Bus B is the same as the Main Can Bus. 120 ohm terminators are
located in the BIU and the Keyless Access Control Module.
The only branch currently installed on CAN Bus B is the Remote Engine Start Control Module.
C 14 is the CAN Bus B High wire and C 15 is the CAN Bus B Low wire.
This CAN circuit controls the lock and unlock signals from the Keyless Access CM to the Body
integrated Unit. A failure disables the Keyless Access lock and unlock functions.
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Electrical Systems Operation & Diagnosis Module (602)
Low Speed CAN
Low Speed CAN (ARTWORK)
When the logic value of the Low Speed CAN is 1 the voltage of the CAN High signal is 0 volts
and the value of the CAN Low signal is 5 volts. As the logic changes to 0 the CAN High voltage
will change to 4 volts and the CAN Low signal will change to 1 volt.
The terminators of the Low Speed CAN only operate while the circuit is active. This prevents
checking of the total circuit resistance of the Low Speed CAN. If a trouble code of the Low Speed
CAN is present, check the voltage at the Low Speed CAN high and low wires for voltage or
oscilloscope patterns. Resistance checks can also be performed when no voltage is in the circuit.
i97
B225
10A
*1 *1
A9
B6
C2
A1
A: i84
B: B280
C: B281
D: B279
i77
B17
C20
*2
*2
*3
*3
A28
26
i10 27
19
i88 A: i85
20
A11
A12
D27
*2
*2
*3
*3
4 3
LgR
LgR
P
P
BY
P
LgR
AA
P AA
LgR
P
LgR
LgR
P
BY
P
BY
B
B
LR
WL WL
LG
LgR
LgR
P
B
BY
AA
FUSE
(RELAY BLOCK)
A/C
CONTROL
PANEL AUDIO
COMBINATION
METER
TO POWER SUPPLY CIRCUIT
MB-29
M/B FUSE NO. 8
(B)
FB-18
F/B FUSE NO. 7
(B)
CAN JOINT
CONNECTOR
BODY INTEGRATED UNIT
JOINT
GROUND
CONNECTOR
*1
*2
*3
: TERMINAL No. OPTIONAL ARRANGEMENT
: TERMINAL No. OPTIONAL ARRANGEMENT
AMONG 6, 7, 8, 9 AND 10
: TERMINAL No. OPTIONAL ARRANGEMENT
AMONG 1, 2, 3, 4 AND 5
: AUTO A/C
Low-Speed CAN Wiring (2012 WRX-Sti)
25
26
24
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Local Interconnect Network (LIN)
A Local Interconnect Network (LIN) connection is utilized on some models where control and
confirmation of operation of a device is required. The LIN is a circuit that uses the body ground
and one wire from a controller to a device. The operational speed is much slower than CAN (up
to 20 kbits/s).
LIN
An example of a LIN circuit is the wire from the Keyless Access and Push Button Start Control
Module to the Steering Lock Control Module. The Electronic Steering Lock operates to lock or
unlock the Steering Column from commands issued from the Keyless Access and Push Button
Start control module. The Steering Lock control module sends a signal back to the Keyless Access
and Push Button Start control module to confirm the operation is complete.
Notes :
28
25
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Monitoring of Trouble in the System
The control modules in the LAN system monitor the communication data between them. When a
control module detects an error in the data it immediately transmits an error flag to notify the error
to all the other modules of the LAN. This prevents reception of messages with an error by the other
modules. When the trouble is detected in the system, the Body Integrated Unit transmits trouble
information to the Combination Meter and displays it on the Trip Meter. (Applicable models only.)
ER IU
The Combination Meter will display the LAN system codes any time the ignition is on and in case
of multiple codes the display is determined by priority listed below:
– High Speed CAN
– Low Speed CAN
– Body Integrated Unit
– ECM
– TCM
– VDC/ABS
– Vehicle Speed
CAN Trouble Codes
Er– High speed and low speed CAN communication error at the same time
Er HC High speed CAN communication error
Er LC Low speed CAN communication error
Er IU No data or irregular data received from the Body Integrated unit
Er EG Engine Control Module or CAN communication error
Er TC Transmission Control Module or CAN communication error
Er Ab ABS/VDC Control Module or CAN communication error
Er SP Irregular vehicle speed signal (ABS/VDC Diagnostic Code Information)
CAN data vehicle speed – Pulse input vehicle speed >=15 km/h
Er SS Irregular vehicle speed signal (Wheel Speed Signal error)
Pulse input vehicle speed –CAN data vehicle speed >=15 km/h
Er Pd Power Window Control Module or CAN communication error
29
26
June 2013
Electrical Systems Operation & Diagnosis Module (602)
The Combination Meter can also be used to display Diagnostic Trouble codes of the ECM, TCM
and ABS/VDC system.
The display function of the DTC’s is activated by turning on the ignition and while the Combination
Meter needles are sweeping, push the Trip Meter control stalk one time.
2005MY THE D CHECK CONNECTORS OF THE COMBINATION METER MUST BE
CONNECTED.
2006MY and Newer THE D CHECK CONNECTOR OF THE COMBINATION METER
HAVE BEEN ELIMINATED.
The DTC display is designed to communicate in four ways.
– Receiving DTC, The P (EGI and TCM) or C (ABS/VDC) flashes while the codes are
being received from each control module.
– There is no code. The P or C illuminates steady with a — following the letter
– The P or C illuminated with the numerical code following (codes are displayed in the
order in which they were stored)
– CAN communication error, A — will be displayed indicating it is impossible to
communicate with the LAN
Notes :
27
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Combination Meter
The Combination Meter receives CAN and Analog data. The CAN data is received from the LAN
while the Analog data is received directly from individual control modules or switches.
Examples of CAN and Analog Data:
CAN data Analog data
Fuel gauge Speedometer
Coolant temperature gauge Tachometer
Door open warning light Brake fluid level warning light
Front fog light indicator light Parking brake warning light
AWD warning light (Tire air pressure) ABS warning light
VDC warning light/VDC off indicator SRS airbag warning light
ATF temperature warning light Oil pressure warning light
Sport shift indicator (AT model) Charge warning light
Sport mode indicator (AT model) Check engine light
AT select level lever position Security/immobilizer indicator light
VDC operation light Head light beam indicator
Cruise control main switch indicator Lighting switch indicator
Cruise set indicator Turn signal indicator
Low fuel waning light Seat belt warning light
Rear fog light indicator*
VSP/ Speedometer
The vehicle speed signal provided as the input to the Combination Meter has CAN data and pulses
(analog data). Normally the pulse data input is used for the driving of the speedometer. The CAN
data is used as a backup when there is a problem with the analog data.
28
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Select Monitor
The Select Monitor will display analog and CAN data while viewing the Integ. Unit mode.
Examples of SSMIII BIU Data:
Analog data CAN data
BATT Voltage (Control) Key lock warning SW
BATT Voltage (Back up) Stop Light Switch
IG power supply voltage Front Fog lamp switch
ACC Voltage Rear Fog lamp switch*
Illumination VR voltage Lighting SW
Illumi. Output d-ratio Door key lock SW
Ambient temp sensor V Door unlock SW
Ambient temperature Passenger door SW
Fuel level voltage Rear right door SW
Fuel level resistance Rear left door SW
Key lock solenoid V Rear gate SW
Number of regist. Manual lock SW
Front wheel speed Manual unlock SW
Notes :
29
June 2013
Electrical Systems Operation & Diagnosis Module (602)
BIU Customizing
The select monitor is also used to change the settings of the following items. This can be used
to increase a customer’s satisfaction of the vehicle and during vehicle diagnosis.
Examples of BIU Customizing Settings:
Settings and Contents
31
30
June 2013
Electrical Systems Operation & Diagnosis Module (602)
SETTINGS AND CONTENTS (CONTINUED)
Body Integrated Unit Customizing
(New Items)
– MT / AT: Disable or enable Key inter lock, shift lock.
– 6 MT / Other than 6 MT: Allows speed sensor signal from 6 MT to serve as an input for
VDC.
– Sedan / Wagon: Disable or enable the electrical lock of rear Gate.
32
31
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Keyless Access with Push Button Start System
The Keyless Access with Push Button Start System allows:
– Doors to be unlocked or locked with a touch of the hand.
– The trunk can be unlocked by pushing the exterior trunk opener button.
– The vehicle to be started using a push button.
Note: D o not leave a spare remote transmitter in the vehicle or store any remote
transmitter within 5 meters (16 ft.) of the vehicle. The keys and the vehicle will
maintain constant communications and drain the remote transmitter’s battery.
Normal Operation
Driver’s Hand in Door Handle
Vehicle Entry and Locking
1. The driver approaches the vehicle with the remote transmitter key in his or her pocket.
The driver’s hand is positioned into the pull area of the door handle. The receiver receives
the wireless signal from the remote transmitter and unlocks the driver’s door. The entry
illumination activates.
NOTE: The next 10 pages use artwork and photographs to describe the
natural progression for Keyless Access and Push Button Start
functions.
34
32
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Remote Key
Antenna
Oscillator KA CM
Receiver
BRZ
Remote Key
Legacy/Outback
Remote Key
BRZ Antenna
Legacy/Outback Antenna
Legacy/Outback Receiver BRZ Receiver
Remote Key Location
Outside of Car
Keyless Access Function
Initial Contact
Keyless Access Receiver for
Legacy/Outback is SEPARATE
from the TPMS receiver.
Keyless Access Receiver for BRZ is
shared with TPMS.
35
33
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Remote Key
Antenna
Oscillator KA CM
Receiver
Legacy/Outback Oscillator BRZ Oscillator
BRZ KA CM Legacy/Outback KA CM
Oscillators Control and boost the wireless signal to the remote key when the remote key
is outside of the vehicle.
Remote Key Location
Outside of Car
Keyless Access Function
Initial Contact
The BRZ Keyless Access CM is located
behind the glove box, next to the A Pillar.
The Legacy/Outback KA CM is
located under the driver side kick
panel.
36
34
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Driver Touching Thumb Switch Area
2. The driver changes their mind and shuts the door. The driver touches the lock button or
sensor of the door handle and the doors lock. The entry illumination turns off.
Notes :
37
35
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Remote Key
Antenna
Oscillator KA CM BIU
Driver Door Lock
Passenger Front Door
Left Rear Door
Right Rear Door
Gate or Trunk Lock
Driver Door
Touch Sensor
Passenger Door
Touch Sensor
Rear
Gate or Trunk
Switch
Driver
Door Lock
Button or
Sensor
Passenger
Door
Lock
Button or
Sensor
Rear
Gate or
Trunk
Lock
Button
Receiver
BRZ Unlock Touch Sensor
Legacy/Outback
Unlock Touch Sensor Lock Switch
BRZ Lock Sensor
Remote Key Location Keyless Access Function
Initial Contact Unlocking / Locking doors, Gate or Trunk
The touch sensors are one wire capacitance type sensors. Touching the sensor or sensor cover (door handle) changes the
capacitance of the sensor circuit and determines the location and function to be performed.
38
36
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Note: If the vehicle is unlocked with the remote transmitter or keyless entry controls
and the door is not opened, the doors will automatically lock after 1 minute
(BRZ only).
Driver Touching Trunk Switch Trunk Switch
3. The driver walks to the trunk or luggage area and pushes the trunk opener switch (a slight
delay is normal). The trunk exterior antenna transmits a signal to the remote key and the
remote key transmits a signal to the receiver. The trunk is unlocked. The trunk mechanically
locks when the trunk lid is closed.
4. The vehicle can also be unlocked or locked with the keyless entry controls of the remote
transmitter.
5. The vehicle can be locked using the mechanical or electrical unlock and lock buttons on
the door panel. The door handle of the vehicle must be held out as the door is closed.
Mechanical Key in Door Lock Trunk Mechanical Key Slot
6. The driver door or trunk can be unlocked with the mechanical key contained inside the
Remote Transmitter. The vehicle alarm will activate as the door or trunk is opened. Turning
the ignition on will deactivate the alarm.
39 40
41 42
37
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Ignition and Engine Start
Engine Start Stop Button
1. The driver sits in the driver seat. The interior antenna transmits a signal to the remote key.
The remote key transmits a signal to the receiver.
2. The driver presses the Engine Start and Stop button once with their foot off of the brake
pedal. The accessory position circuit turns on and allows operation of all accessory circuit
devices.
Notes :
43
38
June 2013
Electrical Systems Operation & Diagnosis Module (602)
KA CM
Receiver
Electric Steering
Lock Control Unit
Interior
Antenna
Starter Relay
Push Button
Ignition 2
Remote Key
Ignition1
Accessory Relay
Push Button
Remote Key Location
Inside of Car
Keyless Access Function
Accessory / Ignition ON
3. The driver presses the Engine Start and Stop Button twice with their foot off of the brake pedal. The ignition turns on
and allows operation of all ignition circuit devices.
44
39
June 2013
Electrical Systems Operation & Diagnosis Module (602)
BIU
ECM
KA CM
Receiver
Electric Steering
Lock Control Unit
Interior
Antenna
Starter Relay
Push Button
Ignition 2
Remote Key
Ignition1
Accessory Relay
Push Button
Starter Cut Relay
Starter Relay
Brake Switch
4. The driver presses the brake pedal and pushes the Engine Start and Stop button once. The starter engages and
operates until the engine starts or for 10 seconds.
Remote Key Location
Inside of Car
Keyless Access Function
Engine Start
45
40
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Note: P ressing the Engine Start and Stop button while the starter is operating will
turn off the starter.
Remote Transmitter Position for Dead Transmitter Battery
5. A dead battery in the remote transmitter will prevent normal starting of the engine. In this
condition, hold the remote key to the chrome ring of the Engine Start and Stop button and
push the Engine Start and Stop button once while holding the brake pedal. The starter will
engage and operates until the engine starts or for 10 seconds.
6. The engine and ignition are turned off by pressing the Engine Start and Stop button once.
7. The starter can be engaged without pressing on the brake pedal by performing the following:
Turn the Accessory position on and press the Engine Start and Stop Button a second time
but do not release the button. Holding the button in this condition for 20 seconds will engage
the starter until the engine starts or for 10 seconds (BRZ, Legacy and Outback).
Note: If the vehicle is moving, the engine and ignition will turn off if the Engine Start
and Stop Button is pressed for 3 seconds. Restart is accomplished by shifting
to neutral, lightly pressing the brake pedal and pushing the Engine Start and
Stop button once.
Notes :
46
41
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Key Warning
BRZ Combination Meter Warning Light
1. If the remote transmitter is removed from the vehicle with the engine operating, a flashing
indicator light on the combination meter will activate and an audible chirp will be sounded.
Note: This function is cancelled if the check engine is illuminated. (BRZ Only)
2. If the remote transmitter exits the vehicle the engine and the ignition will remain on, but the
vehicle will not restart.
3. If the ignition is turned off and the driver side door is opened and remains open (key left
in vehicle), a continuous tone from the warning buzzer is activated. This can be disabled
during service work by pressing and releasing the door switch (open and close switch).
Notes :
47
42
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Wireless Communications
1. When the vehicle and the remote transmitter are separated, the vehicle outputs a signal
every 250 milliseconds. This is the signal that wakes up the remote key. The wake signal
is transmitted by the door handle antennas or trunk exterior antenna. Each antenna is
equipped with an oscillator that controls the signal.
2. The remote transmitter LED (BRZ only) will begin to flash when the remote transmitter is
within range of the wake up signal.
3. The remote transmitter will transmit a continuous signal to the vehicle when the remote
transmitter is within range.
4. The wake up signal will change frequency to 1 signal every 3 seconds when the remote
transmitter has been activated.
5. When the remote transmitter crosses the threshold of outside to inside the vehicle, the door
handle antenna stops transmitting. The LED on the remote transmitter will stop blinking.
Collation and Immobilizer
1. The vehicle transmits a wireless signal (135 KHZ) to the Remote Transmitter.
2. The Remote Transmitter transmits a wireless signal (315 MHZ) to the vehicle.
3. The signal from remote transmitter includes the Immobilizer Identification.
43
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Headlights
The headlight operating logic for 2008 Impreza, 2009 Forester, 2010 Legacy and Outback and
newer vehicles is described below.
Lighting Switch
No parking switch is available.
Headlight Operation
Condition Explanation of
condition
Headlights switch condition needed to turn on
headlights or parking lights
Normal Ignition or Engine ON Turn switch to ON
Key In Ignition OFF A. Lights turn ON when key is placed into the ignition
switch. (Lights were on when the key was last removed.)
B. Turn switch to ON
Key Out A. Turn switch to On
B. Turn switch OFF then ON
NOTE: BUZZER SOUNDS IN THIS MODE WHEN
THE DRIVER’S DOOR IS OPEN
Automatic Transmission models – DRLS DO NOT OPERATE IN PARK.
All models parking brake ON – DRLS DO NOT OPERATE.
All models have a Headlight ON indicator.
Additionally a setting for automatic headlights has been incorporated.
When in Auto Mode, the headlights and tail-lights turn on and off based on the ambient light
detected by the Sunload Sensor.
The Sunload Sensor (applicable models) of the HVAC System performs two jobs.
• Sunload for HVAC System
• Ambient light for the Automatic Headlights
Conventional Sunload Sensors have 2 wires.
The New Sunload Sensor has 4 wires.
B+, ground, analog signal to HVAC, and a wire delivering a digital signal to the BIU.
44
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Sunload Sensor 4 Wires (ARTWORK)
A comparator circuit is built inside the Sunload
Sensor that produces a constant triangle or
ramp wave. This provides one input to the
comparator circuit.
The other input is the voltage generated by the
absorbed sunlight. The comparator evaluates
the 2 voltages and outputs a square wave duty
ratio that is sent to the BIU. When the duty ratio
crosses a set level up or down, the headlights
and taillights turn on or off.
There are 4 levels of sensitivity that can be set
by a technician using the SMIII.
• Dull
• Normal
• Sensitive
• Very Sensitive
Note: The number of levels may change
by model.
These settings as listed on the SSMIII refer to
the Sunload Sensors ability to detect darkness.
Dull would be late on and early off.
Very Sensitive would be early on and late off.
The Integ mode of the SSMIII shows the duty
ratio from the Sunload Sensor.
Dull on approx. 150 HZ, Off approx. 440 HZ
Very Sensitive on approx 350 HZ, off 500 Hz
Use the BIU customizing Menu to adjust the
automatic headlight sensitivity.
If a customer prefers that the automatic
headlights activate closer to dark and turn off
early after sunrise then select “Dull”.
If long before dark and long after Sunrise
operation is preferred then select “Very Sensitive”
Normal and sensitive fall in between the two
extremes.
Headlight Assembly on Bench
The high beam and position light bulbs can
be serviced while the headlight assembly is
mounted in the car.
Note: Always review service
procedures in the applicable
Subaru Service Manual.
Notes :
49
50
45
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Immobilizer Type A
System Construction
The Subaru Immobilizer is designed to prevent
unauthorized people from operating the vehicle.
This is accomplished by the use of a coded
transponder key that reacts with the Body
Integrated Unit (BIU), Engine Control Module
(ECM) and the Combination meter.
The Immobilizer almost simultaneously checks
the key, BIU, combination meter and Engine
Control Module to see if they are all part of a
matched set. If any one part does not match,
the vehicle becomes inoperable.
The Immobilizer is not a security system.
However the vehicle is wired to accept the
addition of the components needed to install
the security system.
Note: The installed items must be
programmed into the BIU using
the Subaru Select Monitor III.
Key
The key contains the transponder which consists
of an antenna, capacitor and integrated circuit.
Transponder (ARTWORK)
Ignition switch
When the key is placed into the ignition a signal
from the key warning switch activates the BIU
to send a high frequency electric wave to the
antenna coil surrounding the ignition switch.
52
53
54
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June 2013
Electrical Systems Operation & Diagnosis Module (602)
Antenna
The electric wave, absorbed by the antenna
in the transponder, charges the capacitor in
the transponder. An encrypted code is sent at
the end of the charging wave. The transponder
decrypts the code and sends an encrypted code
back to the antenna coil, which travels back to
the BIU.
Signal sent and received at Antenna Coil
The BIU compares the code sent by the
transponder with the code programmed into
the BIU and sends an encrypted code to the
combination meter.
Combination Meter
The combination meter decrypts the code and
sends a response back to the BIU.
The result of this signal determines if the engine
is allowed to continue operating if it has been
started.
ECM
55
56
57
58
47
June 2013
Electrical Systems Operation & Diagnosis Module (602)
BIU
The result sent from the combination meter is
stored in the BIU until the Engine control module
has requested a decision to allow the engine to
operate or to turn off the injectors and shut the
engine off.
Key
The vehicle is shipped with two keys (May
change by model and year). Both keys contain
a transponder that is registered to the vehicle.
One key is the master key and the other key is
the valet key. The only functional difference is
that the valet key will not open the trunk lock.
Also shipped with the vehicle, on the key ring,
are two metal tags.
Aı Bˇ
A) Key number plate
B) Security ID plate
Key Tags
The smaller tag is the mechanical key code. This
is what the customer would use to have another
key cut for the vehicle. The larger tag is the
security code for the Immobilizer. This number
must be available to the Technician when the
vehicle Immobilizer system and its components
are being serviced.
A key can only be registered to one vehicle. A
vehicle may have up to four keys registered to
it. The registration process, once started, clears
the BIU of all keys. This means that when one
key is registered, they all must be registered. The
registration process is accomplished using the
Subaru Select Monitor III.
BIU
Replacing the BIU requires that all the keys be
replaced. The new keys must be registered to
the vehicle and the new BIU (2005-2009).
Note: The Keys do NOT need to be
replaced when changing the BIU
for 2010 Legacy and newer and
2011 Forester and newer.
BIU (ARTWORK)
Note: The installation of a new
BIU requires that all keyless
transmitters be reprogrammed to
the vehicle. The BIU customizing
features must be set at this time.
If possible record the current
settings of the BIU before
replacement. If the current
settings cannot be obtained ask
the customer to provide you with
their selections.
59
60
61
48
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Note: The BIU on all vehicles must be set to “market mode”.
Combination Meter or Engine Control Module
Replacement of the combination meter or Engine Control Module* requires that the new part be
registered to the vehicle after installation. Also all the keys previously registered to the vehicle
must be present. Failure to register the current keys during the registration process will result in
the absent keys not being able to start the engine.
• While diagnostic items are being checked, do not operate radios, portable telephones,
etc. which emit electromagnetic waves near or inside the vehicle.
• When turning the ignition switch to ON or OFF while diagnostic items are being checked,
do not allow keys with different ID codes close to the ignition switch. If the ignition key is
in a key holder, remove it from the holder before carrying out diagnosis.
• When repeatedly turning the ignition switch to ON or OFF while diagnostic items are
being checked, it should be switched in cycles of “ON” for at least 5 seconds and “OFF”
for at least 8 seconds.
• If the engine fails to start with a registered ignition key, detach the ignition key from ignition
switch and wait for approx. 1 second until immobilizer indicator light begins to flash. And
then start the engine again.
• Before checking the diagnostic items, obtain all keys for the vehicle to be checked
possessed by owner.
Registration Process
Turn Ignition Switch ON
Immobilizer OK
62
63
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June 2013
Electrical Systems Operation & Diagnosis Module (602)
IMMOBILIZER SYSTEM CLICK YES
Press NO
Input Teaching Code
Key Registration Mode Execute
Security ID
Press OK to Register another Key
64
65
66
67
68
69
50
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Press “OK” To Register Second Key
Register Third Key
ECM Replacement
Replacement of the ECM requires that the
new ECM be registered to the vehicle by the
vehicle identification number (VIN). Using
Subaru Select Monitor III.
ECM Replacement Main Menu
All Other Models Main Menu
70
71
72
73
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June 2013
Electrical Systems Operation & Diagnosis Module (602)
System Selection Menu
Engine Diagnosis Menu
VIN Registered in ECM
Follow the directions on the SSMIII to register the ECM. An ECM can only be registered once.
Confirm the VIN before entering the number.
74
75
76
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June 2013
Electrical Systems Operation & Diagnosis Module (602)
2012 Impreza Immobilizer Type B
The 2012 Impreza is equipped with a new Immobilizer system. This new system is identified
as Immobilizer type ”B” . All previous Immobilizer systems will now be identified as type “A” .The
Immobilizer type “B” simplifies the registration of new parts and reduces the need to have all of
the registered keys on hand to perform service work.
If an ECM or Combination Meter is replaced.
• Only the key accompanying the car to the dealer needs to be present. In this case only
the replacement part needs to be registered.
If the BIU is replaced.
• All of the keys need to be present. (Remote Engine Start will need to be reprogrammed).
• The keys do not need to be replaced.
The Immobilizer type “B” does not utilize a security code and requires no teaching code when
registering any part of the Immobilizer system. There will only be one metal tag on a new vehicle’s
key ring set. This tag is for the mechanical key code.
Security identification is through the use of one registered key. If all registered keys are missing,
the BIU and Combination Meter must be replaced (and the number of keys requested by the
customer). Four (4) keys and RES can be programmed to the Immobilizer system. The new
Combination Meter and BIU will register the unregistered key.
Note: D river’s door must remain open during all registration procedures.
The following charts should be referenced when replacing single parts or multiple parts of the
Immobilizer system.
When only one part is failed or lost
Destination
Parts failed/lost Parts required to replace or prepared
when items on the left fail Procedures to perform after parts replacement
Key Body
integrated
unit
Combination
meter
Security
CU ECU Key
Body
integrated
unit
Combination
meter
Security
CU ECU (1) (2) (3) (4)
Others Not
all All
O X
One registered
key
“Immobilizer
Key ID deletion”
(Deleting lost
keys)
“Immobilizer
system registration”
(Registering
keys needed)
O X
Keys you
want to
register # #
Immobilizer
system registration”
O X
All registered
keys X
Immobilizer
system registration”
O X
One registered
key X
“Meter/SCU
registration”
O X
One registered
key X
“Engine ECU
registration”
0 = Yes
X = Applicable Condition
# = Not failed but must be replaced for security reasons
When two or more parts need to be replaced.
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June 2013
Electrical Systems Operation & Diagnosis Module (602)
Destination
Parts failed/lost Parts required to replace or prepared
when items on the left fail Procedures to perform after parts replacement
Key Body
integrated
unit
Combination
meter
Security
CU
ECU Key
Body
integrated
unit
Combination
meter
Security
CU
ECU (1) (2) (3) (4)
Others Not
all All
O X X
One registered
key X
“Meter/SCU
registration”
“Immobilizer
key ID deletion”
(Deleting lost
keys)
“Immobilizer
system registration”
(Registering
keys needed)
O X X
One registered
key X
“Engine ECU
registration”
“Immobilizer
Key ID deletion”
(Deleting lost
keys)
“Immobilizer
system registration”
(Registering
keys needed)
O X X
Keys you
want to
register
X #
“Immobilizer
system registration”
O X X
Keys you
want to
register
# X
“Immobilizer
system registration”
O X X
Keys you
want to
register
# # X
“Immobilizer
system registration”
O X X
Keys you
want to
register X X
“Immobilizer
system registration”
O X X
All registered
keys X X
“Immobilizer
system registration”
O X X
One registered
key
“Meter/SCU
registration”
“Engine ECU
registration”
Parts and Service Guide for Two or more failed or lost Parts
0 = Yes
X = Applicable Condition
# = Not failed but must be replaced for security reasons
The following is an example of the SSMIII screens and possible conditions that may exist for
correct and incorrect registration procedures.
Main Menu
Enter the SSMIII Immobilizer menu and follow the instructions.
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System Check
Press YES for Immobilizer.
System Selection
Press NO, if the vehicle is not Keyless Access and Push Button Start.
Confirm Ignition SW
The ignition switch should be in the on position.
Immobilizer
This screen confirms the correct procedure has been followed.
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Electrical Systems Operation & Diagnosis Module (602)
Immobilizer Menu-6 Choices
This decision screen provides 6 choices.
1. Immobilizer system registration-
This process closely resembles the procedure currently used for type A Immobilizer
systems. New and old keys are registered with this selection. Use this selection when
adding new keys (old keys must first be deleted), and when the BIU is replaced (RES
must also be registered using separate selection).
Note: The only time the keys need to be replaced is when they are lost.
2. Engine ECU registration-
This process allows registration of the Engine ECU (ECM) and eliminates the need
to register each key.
3. Meter/SCU registration-
This process registers a new Combination Meter and eliminates the need to register
each key. SCU (Security Control Unit) is equipped on Canadian vehicles only.
4. The registration number read-
Indicates the number of keys registered to the car.
5. Immobilizer key ID deletion-
This process erases the registration of keys from the BIU except the one key that is in
the ignition switch. This process is used when replacing lost or damaged keys.
Only 4 keys (plus RES) can be registered to the BIU.
6. Remote Control Engine Starter Registration-
This process allows the RES to be registered to the BIU. This process should be utilized
when installing RES to the vehicle or when replacing the BIU.
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Electrical Systems Operation & Diagnosis Module (602)
Immobilizer System Registration
Immobilizer System Registration
This process closely resembles the procedure
currently used for type “A” Immobilizer systems.
Execute Immobilizer
New and old keys are registered with this
selection. Use this selection when adding
new keys (old keys must first be deleted), and
when the BIU is replaced. (RES must also be
registered using separate selection).
Registering Each Key
This screen displays as the Immobilizer is
registering each key.
If this process is accidentally exited before
completion of the first key, no key will start the
vehicle. (No DTCs will be created)
Correction to this condition is performed by the
following:
1. Turning off the ignition and remove the
key.
2. Wait for about 1 minute with the door
open.
3. After one minute the BIU will enter
sleep mode and click can heard from
underneath the steering wheel.
4. Begin the Immobilizer system registration
from the beginning.
5. Test all keys for engine start after
completion.
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Electrical Systems Operation & Diagnosis Module (602)
Registration Successful
Follow the instructions on the screen until the
Immobilizer main menu is displayed.
Failed Screen
Failure to change keys within 30 seconds results
in the registration of one key only. Perform
the Immobilizer registration process from the
beginning to register all keys.
Previously Registered Key
This information is displayed after attempting to
register a previously registered key.
Failed Unregistered Key
This information will be displayed if an
unregistered key is being used to begin the
Immobilizer registration process. Remove that
key and replace the key with one that is already
registered.
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Electrical Systems Operation & Diagnosis Module (602)
Engine ECU Registration
Immobilizer – Engine ECU Registration Choice
This process allows registration of the Engine
ECU) and eliminates the need to register each
key.
REGISTER THE ECM (ECU)
This must be performed when a new Engine
ECM is installed.
BIU Initializing
This screen will display as the BIU communicates
with the new Engine ECM.
Engine ECU Successful
This screen will display if the registration process
of the new Engine ECM completed correctly.
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Electrical Systems Operation & Diagnosis Module (602)
Engine ECU Registration Exit
Follow the instructions on the screen until the
main Immobilizer menu is displayed.
Meter/SCU Registration
Meter / SCU Registration
Ex cute Meter / SCU Registration
This process registers a new Combination Meter
and eliminates the need to register each key.
SCU (Security Control Unit) is equipped on
Canadian vehicles only.
Follow each instruction on the screen until the
Immobilizer menu is displayed.
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Electrical Systems Operation & Diagnosis Module (602)
The Registration Number Read
The Registration Number Read
The display will indicate the number of registered
keys but will not indicate if the vehicle is
equipped with RES.
How Many Keys Registered to Car
Immobilizer Key ID Deletion
Immobilizer Key ID Deletion
This process is used when replacing lost or
damaged keys.
ID Deletion
This process erases the registration of keys
from the BIU except the one key that is in the
ignition switch.
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100
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Electrical Systems Operation & Diagnosis Module (602)
Only 4 keys (plus RES) can be registered to
the BIU.
Erasing The Registration
This screen will be displayed as the BIU is
erasing the registration of all keys except the
key in the ignition switch.
Deletion successful
This screen indicates the deletion process
finished correctly.
Deletion Exit
Follow each instruction on the screen until the
Immobilizer menu is displayed.
Remote Control Engine Starter
Registration
Remote Control Engine Starter Registration
This process allows the RES to be registered
to the BIU.
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June 2013
Electrical Systems Operation & Diagnosis Module (602)
Start Registration
This process should be utilized when installing RES to the vehicle or when replacing the BIU.
Registration Successful
Follow each instruction on the screen until the Immobilizer menu is displayed.
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Electrical Systems Operation & Diagnosis Module (602)
Exit
This screen indicates the RES was correctly registered.
Note: If a door of the vehicle is opened during RES operation, the RES turns the
vehicle off and generates the following DTCs. These DTCs appear only as
past codes. This condition is described as normal operation and requires no
diagnosis or repair.
Examples of DTC Codes:
DTC Codes
Notes :
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Electrical Systems Operation & Diagnosis Module (602)
Keyless Entry
Function of Keyless Entry System
Keyless Transmitter 2011 Forester TPMS and Keyless Entry
Control Unit
Function Function method Action on a vehicle Answer back
Locking the doors Press the Lock button once. All doors lock. The hazard flasher blinks once
and the buzzer sounds once (if
all the doors were closed when
the Lock button was pressed).
The hazard flasher blinks 5
times and the buzzer sounds 5
times (if any of the doors were
open when the Lock button
was pressed).
Unlocking the doors The first time: Press the Unlock
button once.
Only the driver’s door
unlocks. (*1)
The hazard flasher blinks twice
and the buzzer sounds twice.
The second time: Press the
Unlock
All doors unlock.
Unlocking the trunk lid Press and hold the Trunk lid/
Rear gate button for at least 2
seconds
Only the trunk lid unlocks. The hazard flasher blinks twice
and the buzzer sounds twice.
Unlocking the rear
and gate.
Press the Trunk lid/Rear gate
button once.
Only the rear gate unlocks.
The hazard flasher blinks twice
and the buzzer sounds twice.
Panic alarm Press the Panic button once. The horn sounds and
the hazard flasher blinks
continuously.
Stopping the panic
alarm
Press any button once. The horn stops sounding
and the flasher stops
blinking.
Buzzer ON/OFF (1) Press the Unlock button
once.
The buzzer setting switches
from ON to OFF.
The hazard flasher blinks twice
and the buzzer sounds twice.
(2) Simultaneously press and
hold both the Lock and Unlock
buttons for at least 2 seconds.
The buzzer setting switches
from OFF to ON.
The hazard flasher blinks once
and the buzzer sounds once.
Vehicle finder function Press the Lock button 3 times in
succession within 5 seconds.
The horn sounds once and
the hazard flasher blinks
3 times.
Confirming that doors
are closed.
(1) Press the Lock button once
when a door is open.
(2) Close all the doors.
All doors lock. The hazard flasher blinks once
*1: If any of the doors are open when you press the Unlock button (even for the first time), all the door
will unlock.
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Electrical Systems Operation & Diagnosis Module (602)
How To Register the Transmitter
Using the Subaru Select Monitor
1) Make a note of the ID number. A label
showing the ID number is affixed either
to the bag containing the transmitter or
the circuit board inside the transmitter.
Bag (ID Number)
Open Transmitter
2) Connect the Subaru Select Monitor
(SSMIII) to the vehicle.
3) Turn the ignition switch to the ON position.
4) Operating the SSMIII as described below.
System Selection Menu
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Electrical Systems Operation & Diagnosis Module (602)
INTEG. UNIT Mode Failure Diag.
ID Input
ID Input
5. Use the [ ] key or the [ ] key on the
SSMIII to change the number, and then
use the [ ] key or the [ ] key to move
to the next digit.
ID Confirmation
ID Complete
6) Confirm the displayed number with the
number recorded in step 1.
7) Press “yes” to enter another transmitter
code. Press “no” to end the procedure.
A maximum of four transmitters can be
registered to a single vehicle.
Note: P ress and hold a button on the
transmitter after programming
to complete the registration
process.
NOTE: G o to page 140 of Supplemental
information for Keyless Entry
Registration of newer vehicles.
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June 2013
Electrical Systems Operation & Diagnosis Module (602)
Security System
The security system for the 2005 and newer
Legacy vehicles is controlled by the BIU. The
security system and its chosen operating
characteristics must be set and adjusted with
the SSMIII.
The following select monitor displays briefly
introduce the items to be set and adjusted.
Security System
Alarm Delay Setup
Alarm Delay Setup-The Alarm System is
activated by the keyless entry transmitter.
The Alarm system can be adjusted to arm
immediately or enter a 30 second delay. This
is accomplished using the “Alarm delay Setup”.
During the 30 second delay the security light will
flash at 5 Hz and change to a 1 Hz flash when
the system is armed.
Passive Mode
Passive mode-The Alarm system is activated by
exiting the vehicle. The Alarm system will arm
60 seconds after all doors are closed. This time
cannot be adjusted.
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Electrical Systems Operation & Diagnosis Module (602)
Answer-Back Buzzer Setup
Hazard Answer-Back Setup
The Buzzer Beeping setup and the Hazard Light
answer back can be programmed to respond or
not to respond to the arming or disarming of the
Alarm system.
Impact Sensor
The impact sensor must be turned ON and the
sensitivity adjusted.
Impact Sensor Setup
Sensitivity is adjustable on a scale of 1 to 10 with
5 being the setting from the factory.
The smaller number is, the more sensitive the
sensor becomes.
Lockout Prevention
Lock out prevention is also adjustable. This
prevents the vehicle from being locked while the
keys are in the ignition.
This functions when using the lock button to lock
the vehicle only.
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June 2013
Electrical Systems Operation & Diagnosis Module (602)
Remote Engine Start System (RES)
Note: Impreza 2008 and Forester 2009 are the first year of RES for those models.
All 2007 Subaru B9 Tribeca and Legacy models are pre-wired for a new Remote Starter accessory
(Available for port or dealer installation). This accessory includes an additional wireless key fob that
can start/stop the engine. This allows the driver to pre-warm or cool the interior prior to entering
the vehicle. The climate controls must be set to the on position before exiting the vehicle.
The Remote Engine Start system (RES) operates by commanding currently installed vehicle
components with signals from the RES control module.
The RES is designed to operate the engine for 15 minutes after an RES start. Unless the engine
speed drops below 500 R.P.M. or increases to over 3000 R.P.M.
Note: (RES will not start the vehicle if the battery voltage is below normal).
Pressing on the brake pedal will deactivate the RES and the engine will return to off.
(Opening of the drivers door will also turn off RES on some models.)
This system has been designed to work with the Immobilizer system by registering the
RES software card and immobilizer interface as one ignition key. These two parts must be
replaced if the BIU is replaced, along with the ignition keys currently programmed to the
immobilizer system.
A service mode is available that will deactivate the RES.
Tachometer Idle Speed Programming
NOTE: IF YOU DID NOT PROGR AM THE VEHICLE’S TACH IDLE SPEED AS
INSTRU CTED IN the installation instructions the vehicle will not attempt to
start instead you will get three additional beeps FROM THE HORN.
THE RES SYSTEM MUST LEARN A VALID IDLE SPEED PRIOR TO ATTEMPTING
TO PROGR AM THE IMMOBILIZER INTERFACE.
1. Open driver’s door (leave open throughout programming operation).
2. Turn the ignition key to the ON or RUN position.
3. Press and hold the momentary programming button for approximately 10 seconds until the
vehicle’s horn honks (3) times.
Note: RE S systems that are connected to the CAN do not require tachometer idle
speed programming. See installation instructions for details.
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Momentary Programming Button
4. Release the momentary programming button.
5. Press and release the momentary programming button. The vehicle’s horn will honk (4)
times.
6. Press and release the vehicle’s brake pedal (1) time. The horn will honk (1) time to indicate
that the system has entered tachometer idle speed programming mode.
7. Start the vehicle with the ignition key. The RES system will begin honking the vehicle’s horn
1 time every 3 seconds to indicate a valid tach signal.
8. When the engine has settled to a normal idle speed (normally 750-1000 RPM), press and
release the brake pedal (1) time. The horn will honk (2) times to indicate the system has
exited tach idle speed programming.
NOTE: Be sure that the vehicle has maintained 750-1000 RPM idle speed prior to
exiting tachometer idle speed programming.
Immobilizer Interface Programing
NOTE: The immobilizer interface will be programmed to the vehicle as an ignition key.
This will take up one of the 4 slots available in the BIU. Three additional keys
may be programed to the vehicle.
Note: O nly one key fob is registered during this step but both key fobs will operate
the res.
Starting your Vehicle
The remote control start function activates by pressing the START (key icon) button twice within
3 seconds on your remote control transmitter. The system will check certain **preconditions
before starting, and if all safety parameters are correct, the engine will start within 5 seconds. If
the vehicle’s starter cranks but does not start or starts and stalls, the remote engine start system
will power off then attempt to start the vehicle an additional four times. If the remote start system
shuts down 2 seconds after starting the vehicle, the vehicle has a battery problem.
WARNING: AVOID DANGER OF CARBON MONOXIDE, NEVER REMOTE START
A VEHICLE IN A CLOSED SPACE SUCH AS A CLOSED GARAGE.
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Electrical Systems Operation & Diagnosis Module (602)
Turning Your Vehicle Off
Press and hold the START (key icon) button again to turn the vehicle off. If the vehicle is left
running the remote start system will allow the vehicle to run for a total of 15 minutes and then
automatically turn off.
Entering the Vehicle While it is Running via Remote Start
1. Unlock the vehicle doors using the factory keyless remote. If the vehicle’s doors are unlocked
manually using the key, the vehicle’s security system will trigger and the remote start system
will turn off. Inserting the ignition key into the ignition cylinder and turning it to the ON or
Run position will disarm the security system.
2. Enter the vehicle. Do not press the brake pedal.
3. Insert the key into the ignition and turn to the ON position. If the ignition key is accidently
turned to the start position, the system’s “starter anti-grind” feature will prevent the starter
from re-cranking.
4. Press brake pedal. The RES disengages, the vehicle’s power window features are re-enabled
and the vehicle will operate normally.
To engage the service mode, turn the ignition key to the ON or Run position, depress and hold the
brake pedal then, press and release the START (key icon) button on the remote control transmitter
three (3) times. The system will pause for one second and then flash the parking lights three (3)
times indicating the system is in service mode. When attempting to activate the remote start system
while in service mode, the parking lights will flash three (3) times and will not start.
To disengage the service mode, turn the ignition key to the On or RUN position, depress and
hold the brake pedal, then press and release the START (key icon) button on the remote control
transmitter three (3) times. The system will pause for one second and flash the parking lights one
(1) time indicating that the system has exited service mode.
* *Key in ignition or hood open, inspection mode connector connected
Important Note: When taking your vehicle in for service, it is recommended that
you inform the service personnel that your vehicle is equipped
with a remote start system.
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Electrical Systems Operation & Diagnosis Module (602)
Remote (RES) Transmitter Programming Mode
1. Open the driver’s door (the driver’s door must remain opened throughout the entire process).
Remote Transmitter
2. Insert the ignition key into the vehicle’s ignition cylinder and turn to the ON or Run position.
3. Locate the small black programming button behind the fuse box cover on the left side of
the driver’s side lower dashboard.
4. Press and hold the black programming button for 10-15 seconds. The horn will honk and
the parking lights will flash three times to indicate that the system has entered transmitter
programming mode.
5. Press and release the START (key icon) button on each transmitter. The horn will honk and
the parking lights will flash one time to indicate a successful transmitter learn each time
the START (key icon) button is pressed.
6. To exit transmitter programming mode, turn the ignition key to the OFF position, remove
the ignition key from the ignition cylinder and test operation of the remote transmitter(s).
Enabling / Disabling Confirmation Horn Honks
1. Follow steps 1-4 in “Remote transmitter Programming Mode” above.
2. Pressing the vehicle’s brake pedal will enable the confirmation horn honk feature. The
vehicle’s horn will honk 1 time to indicate that confirmation horn honks have been disabled
and honk 2 times to indicate that confirmation horn honks have been enabled.
3. To exit programming mode, turn the ignition key to the OFF position, remove the ignition
key from the ignition cylinder and test operation of the remote transmitter(s).
Check STIS for the most up to date information in the owner’s manual on the remote engine
start system.
BIU & RES Control unit Location
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Electrical Systems Operation & Diagnosis Module (602)
Immobilizer Interface Location
Software Card & Res Control Unit
RES Software Card
Immobilizer Interface
Inside Res Control Unit, Under Software Card
NOTE: IF THE BIU IS REPLACED ALL
KEYS, SOFTWARE CARD AND
IMMOBILIZER BOX OF THE RES
MUST BE REPLACED.
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Electrical Systems Operation & Diagnosis Module (602)
Notes :
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June 2013
Electrical Systems Operation & Diagnosis Module (602)
The RES (Remote Engine Start) controls and provides the following features.
• Starter motor operation
• Anti grind
• Power supply to the Acc circuit
• Power supply to IGN 1 and IGN 2 circuit
• Horn output
• Door locking
• Power window lock out
• Power supply for security system
These controls and features are only available during RES Operation.
Relays
Normally
Closed
Relay
Normally
Open
Anti
Grind
Circuit
RES
Cranking
Circuit
RES Control Unit
Ignition Switch
Start signal Battery
Positive
Starter
Relay
Starter Motor
RES Schematic During Operation
Anti-Grind
Two relays are used to provide redundancy.
Even when the engine is started with the ignition key, the power from the ignition switch is routed
through the RES control unit. During RES operation these normally closed relays are opened and
any power from the ignition switch (start signal) is prevented from going to the starter solenoid.
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Electrical Systems Operation & Diagnosis Module (602)
Starter Motor Operation
The RES cranking relay delivers power to the starter solenoid during RES operation.
The relay is deactivated when the engine speed signal from the ECM exceeds cranking speed.
RES Ignition Switch
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Electrical Systems Operation & Diagnosis Module (602)
Accessory Power Supply
Two relays are used to deliver the amperage that may be required.
The accessory circuit power supply can be traced on STIS (Service Manual)
Currently the fuse labeling in the RES control unit marked HVAC 1 and HVAC 2 protect the RES
accessory power supply circuits and Relays. Future production of RES control units will have these
fuses labeled ACC 1 and ACC 2.
Inside RES Control Unit
RES Wiring
Additional RES information
Note: The ground for the power window relay is part of the RES circuit. (If the RES
control unit is removed from the vehicle, the power windows will not operate.)
• RES Summary of events
• Installation-(Close hood and open windows)
• Idle speed learning
• Program Key fobs to RES
• Program all keys and key fob to Immobilizer.
(Do not forget to push the programming button during key fob Immobilizer registration.)
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June 2013
Electrical Systems Operation & Diagnosis Module (602)
RES Diagnostics
Prior to beginning the trouble shooting procedure below, verify the following:
1. The vehicle’s battery is fully charged.
2. All remote engine start harness connections are secure.
3. Please have a copy of the remote engine start installation and owner’s instructions for
reference.
Symptom Check Yes No
1 Vehicle’s horn honks an
additional two times after
remote start confirmation.
A) Verify that the vehicle’s hood is
closed.
B) Verify that the vehicle’s brake
pedal is not depressed.
C) Verify that the ignition key was
not left in the ignition cylinder.
D) Verify that the remote start system
is not in “Service mode”.
End
A) Replace the hood safety
switch and hood safety switch
jumper harness.
B) Verify operation of the
vehicle’s brake pedal switch and
replace if necessary.
C) Take the system out of
“Service Mode” refer to Owner’s
Manual.
D) Replace the remote start
control module.
2 Vehicle’s horn honks an
additional four times after
remote start confirmation.
A) Follow the installation instructions
for tach idle speed programming.
B) Verify that the remote start harness
24-way connector is securely
connected to the vehicle’s pre-fit
24-way connector.
End
Replace the remote start control
module.
3 The vehicle starts then
stalls when the remote start
system is activated and the
dashboard security light
remains on solid.
Verify that the immobilizer interface
module is installed as per
the installation instructions and
programmed
End
Replace the remote start immobilizer
interface module and
software card.
4 The vehicle starts when the
remote start system is activated
but the air conditioning/
heater does not turn on.
A) Verify that the vehicle’s air
conditioning/heater controls are
pre-set prior to activating the
remote start system. B) Verify that
the remote start harness 6-way
ignition switch connectors are
properly seated. C) Verify that
the remote start module 15 AMP
HVAC1 and HVAC2 fuses are not
blown
End
A) Replace the 15 AMP HVAC1
and HVAC2 fuses as necessary
and test operation. Replace the
remote start control module.
5 The remote engine start
system does not turn on
the vehicle’s ignition after
receiving remote start
confirmation.
B) Verify that the remote start harness
6-way ignition switch connectors
are properly seated.
C) Verify that the remote start
module 15 AMP IGN fuse is not
blown.
End
Replace the 15 AMP IGN fuse
as necessary and test operation.
Refer to Figure A.B)
Replace the remote start control
module.
6 The vehicle’s ignition turns
on when the remote engine
start system is activated but
does not crank the starter.
Verify that the remote start
harness 6-way ignition switch
connectors are properly seated. End
Replace the remote start control
module.
7 The vehicle’s power
windows operate while the
vehicle is operating by the
remote engine start system.
Verify that the remote engine start
2-way connector is properly connected
to the vehicle’s pre-fit 2-way
connector.
End
Replace the remote start control
module.
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Electrical Systems Operation & Diagnosis Module (602)
Symptom Check Yes No
8 The vehicle’s perimeter
security system triggers
when the door is opened
while running by the remote
engine start system.
A) Was the driver’s door unlocked
using the remote keyless entry
transmitter? The perimeter security
system will not disarm when the
doors are unlocked using the ignition
key.
B) Verify that the remote engine
start harness 24-way connector is
properly connected to the vehicle’s
24-way pre-fit connector.
End
Replace the remote start control
module.
9 The perimeter security
feature does not arm when
the vehicle is operating by
remote engine start.
A) Verify that all vehicle doors and
hatch/truck are closed. B) Verify
that the remote engine start harness
24-way connector is properly
connected to the vehicle’s 24-way
pre-fit connector
End
Replace the remote start control
module.
10 The remote engine starter
transmitter range is poor.
(Normal operating range
should be 500’-800’
depending on vehicle angle
and RF interference)
A) Test and replace batteries as
necessary in the remote transmitters.
B) Verify that the remote
engine start antenna is properly
mounted and plugged into the
remote start control module.
End
A) Replace the remote start
transmitters.
B) Replace the remote start
antenna.
11 The vehicle’s parking
lights do not flash when
the remote engine start
transmitter button is pressed
and do not turn on when
the vehicle is operating by
remote engine start.
A) Verify that the vehicle’s parking
lights turn on using the vehicle
parking light switch. B) Verify
that the vehicles parking light
fuse is not blown and replace
as necessary. C) Verify that the
remote engine start system’s 15
AMP parking light fuse is not
blown and replace as necessary
(refer the Figure A). D) Verify that
the remote start harness 24-way
connector is properly connected
to the vehicle’s 24-way per-fit
connector.
End
Replace the remote start control
module.
12 The vehicle’s horn emits 1
long honk when the remote
start system is activated. End
Verify operation of the vehicle’s
key-in warning switch and replace
as necessary.
13 The remote start system
shuts down 2 seconds after
starting the vehicle.
Check vehicle’s battery for a low
voltage condition and replace as
necessary.
End
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Electrical Systems Operation & Diagnosis Module (602)
Subaru Remote Engine Start Troubleshooting Guide
Operational Conditions
Symptom Check Yes No
14 The vehicle’s power windows
do not operate while
the vehicle is operating by
the remote engine start
system.
The remote engine start system
is equipped with a power window
disable feature during remote
start operation.
End
15 The remote start system
is activated while any door
is open and then all doors
are closed, the doors remain
unlocked. If you open
any unlocked door the
security system triggers
and the remote start shuts
down.
This is a normal function. If a door
is left open during remote start
activation, the automatic lock
feature is disabled for that cycle
to prevent accidentally locking the
ignition keys in the vehicle. While
the vehicle is running by RES,
once all doors are closed, the
door security protection arms. If
a door is opened at anytime, the
security system will trigger and
the RES system will shut down.
End
16 The remote start system is
activated while any door is
open, the customer enters
the vehicle and closes all
doors (the door security
protection arms and the
vehicle’s doors remain
unlocked). The ignition
key is turned to the ON or
RUN position. Any door is
opened causing the horn
to honk one time and the
vehicle will stay running.
This is a normal function. When
the ignition key is turned to the
ON or RUN position the RES
system is still in operation until
the brake pedal is pressed, the
transmitter button is held for 2
seconds or the door security
protection is triggered. Because
the RES system is still operating,
opening any door will trigger the
door security protection causing
the horn to honk one time and
the RES system will disengage
and the ignition key will take over
operation of the vehicle. Approximately
1 second after the RES
system disengages, the system
will recognized that the ignition
key is in the ON or RUN position
allowing the door security protection
system to disarm.
End
17 The RES fob unlock
button is pressed within 5
seconds of shutting down
the remote start system,
the doors will unlock but
the door security protection
will trigger when any door
is opened.
This is a normal function. When
the remote start system shuts
down by any means (15 minute
run time expires, transmitter
shutdown, hood opened, engine
over-rev or stall) the vehicle’s
security module will initiate a
security monitor and re-arm
process that will prevent security
system disarm for approximately 5
seconds.
End
81
June 2013
Electrical Systems Operation & Diagnosis Module (602)
2010 and Newer Legacy
TRUNK SWITCH
An electrical switch on the lower left dash panel
opens the trunk. This feature turns off at a
vehicle speed of greater than 5 miles per hour.
The BIU must be set to Sedan or this feature
will not function.
Trunk Opener Cancel Button
Valet mode is activated by depressing the trunk
open cancel switch in the glove box and locking
the glove box with the ignition key. A valet key
cannot open the glove box or open the trunk
through the trunk key cylinder.
Key in Trunk Cylinder
A key cylinder is provided for manual operation.
NOTES:
144
145
146
82
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Other 2010MY and Newer
Electrical Advancements
Driver Window Switch
The driver side door window is now equipped
with an Auto Up feature that must initialized be
each time power is removed from the window
circuit or the battery is disconnected. Initialization
is performed by closing the window with driver’s
open/close switch and holding the switch in the
closed position after the window has reached
the fully closed position for at least 4 seconds.
Auto Up and Down are now initialized. The
driver window switch assembly contains the
circuitry that controls Auto Up and Down. An
Auto Reverse feature is incorporated that will
automatically open the window to about halfway
when an obstacle is detected in the window
opening as the window is closed. An increase
in amperage to the window motor signals Auto
Reverse to engage.
Inspection Mode Fuse Location
Defogger Switch
The windshield deicer is now prohibited from
activating in ambient temperatures above 41°F.
This feature can be defeated by pushing and
holding the front deicer switch for at least 4
seconds. The LED in the switch will blink when
the deicer activates.
The mirror heaters, (if equipped) are activated
with the rear defogger.
148
149
150
83
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Multi-Function-Display (MFD) (2014 Forester)
The MFD communicates vehicle conditions, maintenance alerts, calendar reminders, and
EyeSight™ operations to the driver.
Multi-Function Display Check Engine
Display screens of the MFD are controlled through the Info/Set controls located on the steering
wheel.
NOTE: The Subaru Service Manual describes the MFD display screen as a “TFT” (Thin
Film Transistor).
Multi-Function Display Buttons
152 153
154
84
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Fuel Remaining Fuel Economy Analog
Fuel Digital Gauge 2 Engine Gauges
The digital fuel usage display updates once per minute and overwrites itself after 30 minutes
(Idling time is included).
NOTE: The fuel economy screen digital can be customized by the driver for 30, 60, or
120 minutes.
NOTE: The oil temperature gauge will display “ – – –” until the oil temperature reaches
86° Fahrenheit.
NOTE: P .S.I. gauge value is in relative pressure.
Analog Clock
155 156
157 158
159
85
June 2013
Electrical Systems Operation & Diagnosis Module (602)
A Traction/X-MODE™ screen provides details of ABS, VDC, Traction Control, and X-MODE™
operation.
HDC Off with X-MODE
Customization of the MFD can be accessed while the vehicle is stationary.
Setting Screen Date
Car History
160
161 162
163
86
June 2013
Electrical Systems Operation & Diagnosis Module (602)
The EyeSight™ display of the MFD provides an analog speedometer, leading vehicle indicator,
set speed indicator for adaptive cruise control and a functioning brake light indicator.
NOTE: The brake light indicator only confirms the existence of the output signal of the
EyeSight™ control unit “ON” signal to the brake light relay and not the actual
illumination of the brake lights.
EyeSight™ EyeSight™ ACC
EyeSight™ ACC with Brake Lights
164 165
166
87
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Power Rear Gate (PRG) (2014 Forester)
The 2014 Forester introduces the new Rear Power Gate (PRG). The PRG provides an electric
powered opening and closing feature that is controlled through a touch switch on the rear gate,
instrument panel, keyless access remote, or the mechanical keyless entry key.
Rear Gate Gate Opener Switch Location & Keyless Access Lock
Button
The opener switch on the PRG is located between the rear license plate light lenses.
Gate Opener Switch Gate Inner (Close) Switch
The closer switch of the PRG is mounted next to the close handle.
NOTE: D o not force the PRG closed if a memorized position has been set or if the
PRG is partially open. Damage to the PRG Drive Unit may occur.
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 pre-established specifications.
168 169
170 171
88
June 2013
Electrical Systems Operation & Diagnosis Module (602)
The Keyless Access and Push Button Start Remote key (KAC) can be used to open and close the
PRG if the ignition is in the off position. Press the PRG switch for more than 2 seconds to toggle
between the open and close operation. The PRG memory switch and the interior PRG opener/
closer switch are located to the lower left of the steering column.
KAC Remote Transmitter & Keyless Entry Key Interior PRG Open/Closer Switch
Gas Shock and PRG Connecting Rod
Operation Mode
The system only operates, when the vehicle status is “not moving” and the following conditions exist:
1. AT model: Shift lever is in P position.
2. MT model: Parking brake is applied.
3. If the rear gate is open and the vehicle starts to move, the PRG will not operate and
the gate will remain open. A caution buzzer alerts the driver that the rear gate is open.
4. If a switch is pushed while the rear gate is closed and the vehicle moves, the PRG will
not operate.
5. If the opener switch is pushed while the gate is opening, the gate operation is changed
towards the inverse direction and closes.
6. The doors must be unlocked (interior switch only).
7. Outside temperature is between -22° and 158° Fahrenheit.
172 173
174
89
June 2013
Electrical Systems Operation & Diagnosis Module (602)
PRG Components and Operation
The PRG control unit is located behind the driver side rear cargo area trim panel. Communications
to the LAN/CAN for operation and diagnostics are through a LIN line. Communications with the
Subaru Select Monitor are very slow due to the limited speeds of the LIN line. Select only the
P.I.D.s (2 or 3 maximum) required to perform diagnostics for a current condition.
NOTE: N o work support is provided for the PRG .
The BIU work support provides for the PRG opening and closing.
Toggle through execution to open and close the rear gate.
PRG Control Unit
NOTE: PRG must be set to support in the BIU.
175
90
June 2013
Electrical Systems Operation & Diagnosis Module (602)
The PRG drive unit consists of a motor, drive gear, driven gear, half stop solenoid, half stop
solenoid switch, pulse or rotation sensor, and an electric clutch. When the driven gear turns, a
threaded drive block pushes or pulls the connecting rod that opens or closes the PRG.
PRG Drive Unit PRG Driven Gear
A parking or half stop gear is made onto the lower end of the driven gear. This gear is used to
lock the PRG in place if the memory height has been programmed or if the PRG was opened
and stopped beyond half-way.
The half stop solenoid pushes or pulls a rod that locks the parking or half stop gear, preventing
the driven gear from turning and holding the PRG in place.
Half-Stop Gear Half-Stop Solenoid
176 177
178 179
91
June 2013
Electrical Systems Operation & Diagnosis Module (602)
A manual release lever is provided to disengage the half stop mechanism in the event of mechanical
or electrical malfunction.
WARNING: The PRG may operate if the lever is activated, stay away from moving parts.
NOTE: An access panel is provided on the cargo area trim to release the half-stop
solenoid in event of malfunction.
Manual Release Lever
A micro switch is attached to the half stop mechanism to signal the PRG control unit of the locked
or unlocked position.
Half Stop Solenoid Unlocked Half Stop Solenoid Locked
180
181 182
92
June 2013
Electrical Systems Operation & Diagnosis Module (602)
The motor direction is controlled by changing the polarity of the positive and ground supply through
the PRG control unit. A duty ratio of 40 to 70 % controls the opening of the PRG and 60 to 80%
duty closes the PRG. This is due to the assist and resistance provided from the gas shocks.
NOTE: The duty ratio near the end of opening or closing should be approximately
30%.
NOTE: W eak or failed gas shocks will increase the closing speed of the PRG and set a
DTC.
PRG Drive Unit Motor Power Duty Ratio PRG Drive Unit Motor
Normal amperage flow during opening is approximately 16 amps to begin movement with a
sustained 2 amps.
Amperage flow during incorrect mechanical conditions or any condition that would block the PRG
from opening can reach as high as 20 amps. This high amperage will continue to flow until the
PRG control unit stops the opening function and re-latches the PRG.
PRG Drive Unit Motor Amperage Normal Condition PRG Drive Unit Motor Amperage with Gate Blocked
NOTE: Continued amperage flow above normal will result in the PRG reversing
direction. If the amperage is above normal for 2 consecutive attempts all PRG
functions will be canceled.
183 184
185 186
93
June 2013
Electrical Systems Operation & Diagnosis Module (602)
The drive and driven gears of the motor drive assembly and the PRG drive unit mesh together to
transfer the opening or closing force needed to control the PRG. Mechanical output of the motor
to the coupling gear is controlled with an electric clutch.
PRG Drive Unit Motor Coupling Gear PRG Drive Unit Motor Coupling Gear “Close Up”
The motor is connected to a worm gear drive that meshes with a reduction gear. The reduction
gear is keyed to a ferrous metal plate that locks to the output shaft of the clutch assembly. The
PRG control unit controls the ground and the power for the electric clutch.
PRG Drive Unit Driven Gear Coupling Gear Clutch and Reduction Gear
PRG Drive Unit Motor Worm Gear Reduction Gear and Clutch Plate
187 188
189 190
191 192
94
June 2013
Electrical Systems Operation & Diagnosis Module (602)
If the rear gate is blocked from opening, a slipping sound will be heard from the PRG drive unit.
Continued attempts to operate the PRG in this condition will damage the clutch.
Clutch Coil and Hub
An electro-magnetic coil is located under the output shaft coupling surface. The resistance of the
coil is approximately 9.8 ohms. The voltage at the clutch should be near battery voltage. A small
ripple effect should be considered normal (by-product from the PRG control unit duty control of
the PRG motor). Normal clutch amperage flow is approximately 1.2 amps.
Clutch Voltage Clutch Amperage
193
194 195
95
June 2013
Electrical Systems Operation & Diagnosis Module (602)
The speed and rotation of the output shaft is monitored with a hall effect switch assembly. The
center rotor is comprised of permanent magnets that are arranged with alternating poles that
interface with the hall effect switch assembly as the output shaft rotates. The output can be viewed
on the Subaru Select Monitor as “Pulse Count”.
Pulse Count Sensor Sensor A and B
The two signals are inputs to the PRG control unit. Sensor A and sensor B, as described in the
I/O chart, range from 0 to 5 volts with the PRG in motion. A failure with either signal results in a
DTC and PRG functions will be cancelled.
Sensor A and B Output
196 197
198
96
June 2013
Electrical Systems Operation & Diagnosis Module (602)
The PRG Auto Closer is located in place of the conventional rear gate latch assembly. The PRG
Auto Closer is equipped with the following components:
– Rear gate latch
– Gate latch motor
– Sector switch
– Courtesy and Latch Switch
NOTE: The PRG Auto Closer functions in normal PRG operations and manual mode.
NOTE: If a problem with the Sector Switch or Courtesy and Latch Switch exists, the
PRG will not fully latch. The rear gate will try to fully close but the PRG control
unit will sound a long beep and the gate will move away from the rear gate
latch. The rear gate cannot be opened until pushed completely closed and the
opener button is then pressed and held for more than 3 seconds.
PRG Auto Closer
Auto Closer Bottom View Auto Closer Top View
199
200 201
97
June 2013
Electrical Systems Operation & Diagnosis Module (602)
PRG Auto Closer Parked
During normal operation with the PRG closed, the arm of the sector switch is resting on the white
plastic detent of the latch assembly driven gear (Sector gear). This represents an off or closed
position for the PRG control unit. 5 volts will be present at the PRG control unit on the sector
switch terminal.
At the same time, the courtesy and latch switch assembly is in the off or closed position. Five (5)
volts will be present at the latch switch terminal of the PRG control unit and 12 volts will be present
at the courtesy switch terminal.
Courtesy and Latch Switch Assembly and Sector Switch
Notes :
202
98
June 2013
Electrical Systems Operation & Diagnosis Module (602)
PRG Auto Closer Opening
When the PRG power gate auto closer assembly is commanded to open, the driven gear will
be turning counter-clockwise (as viewed in image 193). The gear will move as far as possible,
creating a spike in amperage.
NOTE: The spring force created by the weather stripping of the PRG places a preload
on the latch assembly. Additional amperage flow through the motor is required
to overcome this preload and assure the unlocking and opening function is
performed.
During that time, the mechanical latch assembly will be released and the gate should be traveling
upward. Approximately 1 second later, the polarity at the power gate auto closer motor will be
reversed. The driven gear will turn clockwise, (as viewed in image 193), until the arm of the sector
switch is resting on the white plastic detent of the latch assembly driven gear. Very little amperage
is required to turn the gear due to no resistance being placed on the PRG.
PRG Auto Closer Voltage and Amperage
PRG Auto Closer Closing
As the PRG power gate auto closer assembly contacts the gate striker, the courtesy and latch
switch close. The PRG control unit combines this information with the low pulse count of the PRG
drive unit motor and activates the power gate auto closer motor.
When the PRG power gate auto closer assembly is closing, the driven gear will be turning clockwise
as viewed in image 193). The gear will move as far as possible, creating a spike in amperage.
The spring force created by the weather stripping applies resistance against the gate closing,
therefore the amperage of the motor increases. When the motor reaches a certain amperage value,
the PRG control unit will reverse the polarity and motor the reverses. The motor will continue to
operate until the arm of the sector switch is resting against the white plastic detent of the latch
of the driven gear.
203
Opening Closing
99
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Courtesy and Latch Switch Sector Switch Arm
1 2 3 4 5 6 7
G
L
C
G
L
C
G
L
C
G
L
C
G
L
C
G
L
C
G
L
C
Courtesy and Latch Switch Operation
Position 1: Auto Closer at parked position.
Position 2: Auto Closer beginning to move in a clockwise direction. Sector switch has moved off of
the park position (ground removed). Courtesy switch has been connected to ground.
Position 3: Continued movement in the clockwise direction. Latch switch has been pulled to ground.
The Auto Closer motor has finished it’s clockwise movement, and will begin it’s counterclockwise
movement after approximately 500 m/seconds. When the Auto Closer motor has
finished it’s counter-clockwise movement the Sector switch connects to ground.
Position 4: The latch switch opens, signaling the Auto Closer motor to begin closing movement in a
counter-clockwise direction. The Sector switch moves off of the park position.
Position 5: The courtesy switch opens. The Auto Closer motor is still moving in a counter-clockwise
direction.
Position 6: The latch switch is connected to ground. This is the signal for the Auto Closer motor to
reverse direction and move clockwise.
Position 7: The Sector switch has been connected to ground, stopping the Auto Closer motor movement.
This brings the Auto Closer motor back to the park position.
204
205
100
June 2013
Electrical Systems Operation & Diagnosis Module (602)
D152
D153
11
10
1
14
1
14
1
11
1
2 2
8 8
9 9
A
A: R422
B: R423
R39 D35
R38 D34 D80 D81
D155 D156
V
G
Y
P
L
B
B 2
W 1
B14 R
V
A13 G
A5 Y
B4 P
B13 L
A12 W
B
R V
G G
W W
B B
V V
B B
V V
G G
Y Y Y Y
P P P P
L L L L
W W
Power Rear Gate
Auto Closer
Power Rear Gate
Power Rear Gate CM Buz zer
REF. TO GND [i]
Courtesy Switch
and
Latch Switch
1
2
6
5
4
3
L
R
B
R
B
B
Y
Sector Switch
Motor
PRG Auto Closer Schematic
206
101
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Touch Sensors
A pinch or Touch Sensor is installed on the left and right inner edge of the rear gate. If either sensor
is compressed during closing, the PRG automatically reverses and moves to the open position.
Touch Sensor
The touch sensor is constructed in a soft rubber tube, consisting of 4 spiral wound wires. The
wires are coated with a semi-conductive coating that allows the wires to act as a switch. When
the tube or sensor is compressed, the wires will touch each other and lower the resistance in the
pinch circuit. The more the wires are compressed, the lower the resistance becomes.
Touch Sensor Tube Touch Sensor Resistor
A resistor (approximately 975 ohms) is connected in parallel with the touch sensor so that the touch
sensors can be monitored by the PRG control unit. If either sensor is not connected, or has the
incorrect resistance, a DTC will set and the PRG will not function (manual mode will be available).
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 pre-established specifications.
207
208 209
102
June 2013
Electrical Systems Operation & Diagnosis Module (602)
2 1
D151
D150
D155
D35
2
7
8 9 10 11
3
1
4 5 6
R423
11 12 13 14 15 16 17 18 19 20
1 2 3 4 5 6 7 8 9 10
B:
6
4 4
6
5
D156
D155
D35
B39
B12
B18
2
1
D151 D150
B: R423
B11
1
2
SL-02256
POWER REAR GATE CM
TOUCH SENSOR RH TOUCH SENSOR LH
Touch Sensor Schematic
Notes :
210
103
June 2013
Electrical Systems Operation & Diagnosis Module (602)
“Memory Height” Learning Procedure
NOTE: The ignition should be off and the PRG should be closed.
1. Push the “Memory Height SW” on the instrument panel in so that it is at its lowest
position. (ON)
Memory Height Switch Location
Memory Height Switch Highest Setting (OFF) Memory Height Switch Lowest Setting (ON)
211
212 213
104
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Gate Opener Switch
2. Set the PRG to manual mode by pushing the “Opener SW” on the gate for more than
0.8 seconds.
NOTE: Immediately open the PRG so that the auto close function does not engage.
3. Open the gate manually, until the position of your preference is reached and then push
and hold the “Gate Inner SW” for more than 3 seconds. A beep notifies you that a
memorized position has been set.
4. Push down the gate manually towards a position before the complete close point and
then wait until the gate closes completely through the auto closing function.
5. The “Memory Height SW” on the instrument panel must be kept in the on position
(lowest position) for the PRG to open only to the memorized position.
6. The Full open position of the PRG can be obtained by pushing the “Memory Height
SW” on the instrument panel to its highest (OFF) position and then pressing any of
the opener switches.
7. Manual mode can be activated by pushing the Opener SW on the gate for more than
0.8 seconds if the “Memory Height SW” is at its lowest setting (ON).
8. The memorized position is not erased if the PRG control unit power is removed. The
memory once set cannot be erased, only overwritten.
CAUTION:
DO NOT move the PRG manually if the PRG is opened to a memorized position.
Damage to the half stop pin or solenoid will occur.
214
105
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Electrical
The 2014 Forester is equipped with a 130 Amp alternator that utilizes a duty ratio to control charging
output (similar to the 2012 Impreza) and a 55D23L battery.
The alternator is equipped with a de-coupler (one-way clutch) pulley that is designed to suppress
auxiliary belt resonance produced as the engine torque fluctuates during driving. This change was
required to maintain the correct accessory belt tension due to the changes in the belt routing and
the reduction in belt tension (as compared to previous models).
􃻌
􃻌
(1) Alternator (2) De-coupler
With Power Steering Pump Without Power Steering Pump
If the alternator speed is faster than the engine or belt speed, the de-coupler releases the locking
mechanism and reduces the deceleration shock to the accessory belt. The pulley is sealed on
both sides to keep the non-serviceable lubricant contained in the de-coupler.
De-coupler Front View De-coupler Rear View
The outer belt driven pulley unwinds a spring that is keyed into the inner side of the pulley hub.
As the spring unwinds the friction between the hub and the pulley increases and the alternator
is driven. If the speed of the alternator is greater than engine speed or outer pulley speed, the
spring tightens and the friction is reduced, producing the one-way clutch action. The alternator
must be serviced if the de-coupler fails.
216 217
218 219
106
June 2013
Electrical Systems Operation & Diagnosis Module (602)
De-coupler One-way Clutch Spring
During PDI, move the power back up fuse from the shipping slot to the running position. Also,
remove the delivery mode fuse and place it in the fuse box cover fuse storage slot.
Back Up Power Supply Fuses Delivery Mode Fuse Slot
NOTE: Mechanical key vehicles are equipped with immobilizer type B.
Keyless access and push button start vehicles are equipped with immobilizer
type D.
Consult the Subaru Service Manual on STIS for immobilizer.
Notes :
220
221 222
107
June 2013
Electrical Systems Operation & Diagnosis Module (602)
The amp clamp and battery temperature sensor are combined into one unit and are located on
the positive battery post connector.
AMP Clamp Positive Battery Post
The Controller Area Network (CAN) of the 2014 Forester uses CAN diagnostics for all members
of the CAN. K line diagnostics have been eliminated. This means that a failure of the CAN bus
results in lack of functionality and disables the CAN diagnostic function of SSMIII beyond the
affected area (open circuit or CAN Lo wire short to ground only). This allows faster isolation of
the problem area.
Electronic Steering
Lock
EPS A/B Keyless
Access
Remote
Start
Steering
Angle
sensor
A/C Combimeter
Eye
Sight
ECM
Yaw
rate
sensor
Headlight
Leveler
Impact
sensor CVT DLC MFD
BIU VDC
LIN
LIN
Power Rear
Gate
CAN Configuration
New members to the CAN include the Multi-function display and the headlight leveler sensor.
223
224
108
June 2013
Electrical Systems Operation & Diagnosis Module (602)
A: B450
B134
B246
B258
B247
A
AB6 B230
B331
B367
ES
ES
J/C
J/C
B259
B
R *3
R *3
R *3
R *3
L *3
L *3
L *3
L *3
*1 R
*1 R
*2 L
*2 L
R 5
L 6
IP
IP
L
R
A9
A10
J/C
A:
13
22
R
L
3
2
L
R
A6
A7
R
L
J/C
J/C
*3 R
*3 R
*3 R
*3 L
*3 L
*3 L
ECM
IMPACT SENSOR
POWER
STEERING CM
YAW RATE &
AIRBAG CM G SENSOR
Partial CAN Schematic
The Subaru Service Manual wiring schematics for the 2014 Forester have been enhanced. The
schematics are now in color and use new terminal symbols.
CONNECTOR
Male Female
Connector Symbol
2
R167 i102
P P
Connector from Schematic
2014 Enhanced Wiring Schematic Symbols
225
226
109
June 2013
Electrical Systems Operation & Diagnosis Module (602)
The connector description detail usually found at the end of each page has been changed. The
connector detail description is now found at the end of each schematic.
Horn System
WIRING SYSTEM
25.Horn System
A: WIRING DIAGRAM
28 29 30 31 32 33 34 35 28 29 30 31 32 33 34 35
20 21 22 23
28 29 30 31
18 19
26
24 25
27
1 2 3 4 5 6
1 2 3 4 5
1 2 3 4 5 6 7
1 2 3 4 5 6 7
9 8 9 8
9 10 811 12 13 14 15 16 17
27
7 10 11 12 13 14 15 16
2 1 8 9 10 11 12 13 14
27
10 11 12 13 14 15 16
3 4 5 6 7
8 9
5
12
6
7
3 4
7 14 15
2
17 22 23 24 25 26
10 11
1 2 3 4 5 6
HORN-01
HORN-01
22 23 24 25 26
17
9 811 13 16 17
1
18 19 20 21
ST3
WI-36279
B481 B489
B491
B479
18 19
20 21
B: B281
18 19 20 21 22 23 25 26 27
28 29 30 31 32 33 34
10 12
A: B280
C: i84
C: i84 D: i171
D: i171
24
B68
B: B281
B479
5 A1 A24
B31
D29
C1 B7
A: B280
B68
ST1
ST3
1 9
B491
3
C6
R
BG
RG
BY L
BY
BY
BY
WL
R
WL
BG
BY
R
L
RG
BY
BY
J/C J/C
ROLL
CONNECTOR
HORN
SWITCH
HORN HORN
BODY INTEGRATED UNIT
TO POWER SUPPLY CIRCUIT
MB-34
HORN RELAY
FB-17
F/B FUSE NO. 7
(B)
FB-41
F/B FUSE NO. 14
(B)
MB-33
M/B FUSE NO. 33
MB-32
M/B FUSE NO. 32
REF. TO GND
[GND-01]
REF. TO GND
[GND-01]
REF. TO GND
[GND-03]
2013 Legacy Subaru Service Manual 2014 Forester Subaru Service Manual
Horn System
WIRING SYSTEM
26.Horn System
A: WIRING DIAGRAM
WI-40835
2
1
a a
*2
i102
R167
B553
i231
*1
A: B280 B: B281 C: D: i171
F5 F47
B68
ST1
i84 ST3
9
B371
J/C *2
*2
R/L
B/L
L/R P
C6 P P P
A24 *1
D29
B31
A1
B7 L/R
R/L
1
B
B/Y
B
B/Y
B
C1 B
1
1 B/L
B
*1 *1
HORN HORN
ROLL
CONNECTOR
HORN SWITCH
BODY INTEGRATED UNIT
MB-21
HORN RELAY
FB-17
F/B FUSE NO. 7
(B)
FB-11
F/B FUSE NO. 15
(B)
MB-20
M/B FUSE NO. 9
MB-19
M/B FUSE NO. 9
REF. TO GND [g] REF. TO GND [c] REF. TO GND [b]
: TERMINAL No. OPTIONAL ARRANGEMENT AMONG 1, 2, 3, 4, 5 AND 6
: NON-TURBO MODEL : R
TURBO MODEL : Y
Comparing Different Years of Subaru Service Manual Diagrams
WI-268
Horn System
WIRING SYSTEM
28 29 30 31 32 33 34 35
20 21 22 23
28 29 30 31
1 2 3 4 5 6
7 8 9 10 11 12
1 2 3 4 5 6
18 19
26
24 25
27
8 9
1 2 3 4 5 6 7
27
7 10 11 12 13 14 15 16
3 4 5 6 7
10 11 12 13 14 15 16 17
14 15
2
13 14 15
7 8 9
3 4
1
17 18 19
10 11 12
5 6
2
16
1 2
9
17 22 23 24 25 26
8 9 10 11 12 13 14
8 9 11 13 16 17
1
8 9
5
12
6
7
3 4
8
i84
18 19 20 21
7 18 19 20 21 22 23 25 26 27
28 29 30 31 32 33 34
10 12
B280
B371
10 11
i171
1 2 3 4 5 6
A:
24
1
WI-40836
ST3
i102
b b
B281
10 11 12 13 14 15
24 25
16
30
8 9 17 18 19
20
28
21 22 23
31 32
26 27
33 34 35
F47
F5
C: D:
B68
B:
1 2 3 4 5 6 7
29
(B)
(B)
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
i231
LIST OF CONNECTORS
Horn System Connectors
227
228
110
June 2013
Electrical Systems Operation & Diagnosis Module (602)
2014 Combination Meter
The combination meter of the 2014 Forester can be diagnosed with the Subaru Select Monitor III.
Current data display, DTCs, Customization and Work Support are provided to adjust (applicable
items only) and test all gauges and lights.
Combination Meter
Subaru Select Monitor III (SSMIII)
System Selection Menu Combination Meter Menu
230
231 232
111
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Combination Meter Work Support Combination Meter Work Support Menu
Available Visual And Audible Checks Combination Meter Unit Customization
Available Items For Customization or Checking
233 234
235 236
237
112
June 2013
Electrical Systems Operation & Diagnosis Module (602)
The Multi-function display has an available “Work Support” function which will only display the
ECU (MFD) part number and software version.
System Selection Menu Multi-function Display Menu
Visual and audible checks can only be performed from the “Combination Work” support.
Multi-function Display Work Support Multi-function Display Work Support Menu
Return to the “Combination Main Menu”
1. Select “Work Support”.
238 239
240 241
113
June 2013
Electrical Systems Operation & Diagnosis Module (602)
2. Next, select “System Operation Check Mode”.
Combination Meter Work Support Combination Meter System Work Support Menu
Select the MFD output check and navigate to the desired check.
Available Visual And Audible Checks MFD Visual And Audible Checks
Notes :
242 243
244 245
114
June 2013
Electrical Systems Operation & Diagnosis Module (602)
The combination meter and the MFD are both connected to the High Speed CAN. Each part
obtains the information needed to operate from the CAN but the communications between
each part are sent and received through a UART circuit.
ECM
VDC CM
TCM
SE
SE
38
PI
PI
EM
ES
IP
E0
EC
LCD
EEPROM
*1 :
MFD
ME
ME
33
23
: WITH ECO GAUGE
: C0 MODEL WITH EyeSight
: WITH EyeSight
AUTO HEADLIGHT BEAM
LEVELER CM
KEYLESS ACCESS CM
BODY INTEGRATED UNIT
CAN TRANSCEIVER &
RECEIVER
REMOTE ENGINE START CM
IMPACT SENSOR
SELECT
SWITCH
AIRBAG CM
STEERING ANGLE SENSOR
POWER STEERING CM
A/C CONTROL PANEL
HEADLIGHT ON WARNING
TRIP
SWITCH
DRIVE
MICRO COMPUTER CIRCUIT
: WITH IMPACT SENSOR
: EXCEPT FOR STANDARD MFD
STEREO CAMERA
SEAT BELT
KEY WARNING
CUSTOMIZED
KEYLESS ACCESS
SI-DRIVE
Wiring Schematic
UART communications are similar to LIN communications in operating speeds, but are capable
of communicating more complex data. LIN is best for commanding the operation of devices and
confirming the operation was completed.
DTC U1651 Lost communication with Meter (UART)
28 9
i10 i122
COMBINATION METER MFD
Combination Meter Lost Communication To MFD
246
247
115
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Instrumentation/Driver Information
DTC Item Content
U0073
Control Module communication Bus “A” Off. Detected when CAN line abnormality is
detected.
U0100
Lost communication with ECM/PCM “A”. Detected when CAN data from the engine
control module (ECM) does not arrive.
U01001
Lost communication with TCM. Detected when CAN data from TCM does
not arrive.
U0122
Lost communication with Vehicle
Dynamics Control Module.
Detected when CAN data from VDC does
not arrive.
U0131
Lost communication with Power Steering
Control Module.
Detected when CAN data from electric
power steering CM does not arrive.
U0140
Lost communication with Body Control
Module.
Detected when CAN data from body
integrated unit does not arrive.
U0151
Lost communication with Restraints
Control Module.
Detect when CAN data from airbag CM does
not arrive.
U0164
Lost communication with HVAC Control
Module.
Detected when CAN data from A/C CM does
not arrive.
U0327
Software Incompatibility with Vehicle
Security Control Module.
Detected when CAN data from keyless
access CM does not arrive.
U1201 CAN-HS Counter Abnormal. Detected when CAN data is abnormal.
U1235
Lost communication with EyeSight™. Detected when CAN data from stereo
camera does not arrive.
U1433
Invalid Data Received from EyeSight™. Detected when microcomputer in the stereo
camera froze.
U1650
Invalid Data Received from Meter (UART). UART data from the combination meter is
abnormal.
U1651
Lost communication with Meter (UART). UART data from the combination meter has
not arrived.
B2220
Break the wire of IGN. Voltage malfunction caused by poor contact
of IGN power supply circuits.
B2222 System Microcomputer Fail. When microcomputer froze.
B2223
GERDA Fail When transmitting and receiving of data
cannot be done normally between system
microcomputer and image microcomputer.
B1500 Fuel Sender Open/Short-Circuit Detection. Fuel gauge circuit is open or shorted.
B1501
Power Supply system Error Detection. Combination meter power supply circuit is
open or shorted.
B1507
External Air Temperature Open/Short
Circuit Detection.
External air temperature sensor circuit is
open or shorted.
116
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Service Bulletins
**Be advised this may not be all the Subaru Service Bulletins pertaining to electrical systems.
**Go to Subaru Tech Info System (STIS) for all Subaru Service Bulletins.
No. Date Title Subject
07-50-93R 12/02/94 Repair of rear window defogger
metal tab Repair of rear window
defogger grids
16-63-99R 02/27/09 1990~2009MY Models Remanufactured Transaxles
Program
08-33-02 01/07/02 2000~2004MY Legacy Combination Switch Repairs
10-74-02 09/01/02 2001~2002MY Legacy H-6 Legacy H-6 Air Conditioner
Compressor Revolution Sensor
10-72-02R 07/15/03 2002~2003 Impreza Countermeasure to Prevent Icing in
the Evaporator on Air Conditioned
Vehicles Correction
06-31-03R 12/08/04 1997~04MY Legacy, Outback & Baja
(Excluding VDC Equipped Vehicles);
1998~04MY Impreza and Forester
Replacement of ECU for ABS
Repair
17-07-04 08/12/04 2003~2004MY Forester Trouble code 41 & 42 in the
Diagnostic system of the SRS Side
Air Bag system
07-54-05 11/21/05 Front for light lens & reflector
07-56-05 08/01/06 Fog light lens and body
08-36-05 10/05/05 2005~06MY Legacy &Outback
excluding 3.0 H-6 equipped vehicles
Error code “Er SP” display in the
odometer/trip meter
06-35-05R 08/19/05 2002~2003MY Subaru WRX 5MT/T ABS Control Unit Customer
Satisfaction Program
08-36-05 10/05/05 2005~06MY Legacy and Outback
excluding 3.0 H-6 equipped vehicles
Error code “Er SP” display in the
odometer/trip meter
08-37-06 05/09/06 2006MY Legacy and Outback
(Excluding vehicles equipped with
Navigation System)
“–:– –” Indicated in Elapsed Time
Display
07-57-06 08/24/06 Seat Heater anchor point
modification
07-58-06 08/25/06 Change in Horn(s)
11-81-06 11/16/06 2005~06MY Legacy/Outback equipped
with H4 and H6
2006MY B9 Tribeca
Diagnostic Trouble Codes (DTC)
P0600, B0221 and/or B0223
(Codes for communication error)
07-59-07 12/17/07 Dew Formation Inside Exterior
Lamps
07-60-07R 04/25/07 2000MY and Later Legacy/Outback
2.5L SOHC Vehicles
Ignition Coil and High Tension
Cables
117
June 2013
Electrical Systems Operation & Diagnosis Module (602)
No. Date Title Subject
07-61-07 04/05/07 2005MY Legacy and Outback Vehicles
Equipped with All Weather Package
Modified Front Seat Cushion
Heater
07-62-07 01/17/08 All Models Dark Current or Excessive Battery
Draw
15-126-07 02/13/08 All Models Radio Static when rear window
defogger is on
07-63-08 06/26/08 2009MY Forester Spot Map Light
07-64-08 12/04/08 2002~2007MY Impreza Power Window Motor Assembly,
Front
08-38-09 07/16/09 2010MY Legacy & Outback Produced
Before June 30, 2009
Service Procedure for Multi-
Function Display (MFD) Wire
Harness Repositioning
07-65-11 05/04/11 2008MY and Later Tribeca Headlight Assembly Rear Cover
Screw
07-66-11
07-66-11R
11/18/11
05/30/12
2008MY and Later, Impreza
2009MY and Later, Forester
Seat Heaters (if equipped)
07-68-12 09/11/12 2013MY BRZ Alternate procedure for Removal of
Front Side Marker Lamp
07-69-12 09/12/12 2012 &2013MY Outback Procedure to Increase Clearance
/ Gap between the Combination
Lamp and Rear Gate Garnish
07-70-12 09/20/12 2011MY Forester Models with FB
Engine
Engine Harness Retention Clip
Modification Procedures
15-158-12 10/24/12 2013MY BRZ Navigation/GPS antenna Changes
SD Card Exchange Program
Information
07-71-12 12/03/12 2008~2010MY 5 Door Impreza Revised Packing Material for the
License Plate Lamp
07-72-13 01/29/13 2010~2013 Legacy and Outback
Models
Sunroof does Not Open or close
Properly Popping or Slamming
sound When Glass Lowers Prior to
Opening
07-73-13 04/17/13 2013MY BRZ Power Window Main Switch
Change.
118
June 2013
Electrical Systems Operation & Diagnosis Module (602)
TechTIPS
**Be advised this may not be all the Subaru TechTIPS pertaining to electrical systems.
**Go to Subaru Tech Info System (STIS) for all Subaru TechTIPS.
Date Subject
01/00 2000MY Legacy Blows Fuse #5
02/00 2000MY Subaru Legacy Turn Signal Operation
04/00 2000MY Legacy & Outback Vehicles Fog light Operation
07/00 Grounds, Grounds, Grounds
08/00 Daytime Running Lights
11/00 Windshield wiper De-Icer System Not Working
01/01 Blower Motor Resistor Repairs
06/01 In-Dash Cigarette Lighter Usage
08/01 Alternator Supplier Update
03-04/02 Legacy Transit (D-check-Plug) Connectors
03-04/02 Fuse 4 Blow-Out
07/05 2005MY Legacy / Outback Trailer Hitch Harness Location
10/05 Backup Poor Supply Fuse
11/04 2005MY Forester Diagnostic connector
02/05 2005MY Legacy / Outback Electrical Diagnosis
03/05 Body Integrated Unit (BIU) Replacement
04/05 HVAC & Audio Unit Inoperative After Wiring Harness Change
04/05 2005MY Baja With Poor Radio Reception
05/05 HVAC Inoperative After Wiring Harness Change-More Information
08/05 2003MY Forester Fuse Information
09/05 Battery Going Dead Or Alarm Going Off
11/05 Information Requested For Harness Repair Kits
02/06 2006MY Legacy / Outback And B9 Tribeca Combination Meter Self Diagnosis
02/06 Change of Seat Heater Relay
06/06 Low Battery Voltage
06/06 2005MY Forester A/F & 02 Sensor Relay Location
07/06 SBF-5 Fuse Blows On 2005MY / 2006MY Impreza Vehicles
02/07 “Dark Current” Or Excessive Battery Draw
04/07 Erratic Tail Light Operation
04/07 More “Dark Current” Information
05/07 Headlight Bulb Replacements-A Reminder
06/07 New Style 2008 MY Legacy, Outback & Tribeca Keys
06/07 Midtronics in TELLECT EXP Battery Tester Logic Update
07/07 Headlight Bulb Socket Repairs
08/07 2008MY High Security Keys
119
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Date Subject
09/07 2008MY Impreza Headlight Switch Operation
01/08 2008 Impreza Stop Light Switch C0074 and 0054
05/08 BIU Replacement and Keys
06/08 2008 Impreza Data Link connector Color Change
06/08 Legacy & Outback Door Switch (Nov 2004 production & after)
07/08 Impreza Shock Sensor Installation
12/08 Forester Sunroof Reserves when Closing
01/09 2008~09MY Impreza, Erratic Outside Temperature Gauge Operation
02/09 Door and Ignition Lock Cylinder Replacement Clarification
03/09 2009MY Forester Power Window Information
04/09 Power Door Locks Inoperative 2009MY Forester
06/09 Dark Current Information Revisited
08/09 2010MY Legacy & Outback, Auto Up/Down Feature Operation
08/09 Speedometer Inoperative? Don’t Overlook the Sunroof Wiring
08/09 2010MY Legacy & Outback Low-Beam Bulb Replacement
09/09 2010MY Legacy and Outback Headlamp Bulb Replacement Info
10/09 2010MY Legacy & Outback Power Window Operation
01/10 Re-Coding Laser-Cut Keys
02/10 2010MY Legacy / Outback Oil Level Warning Info
02/10 2010MY Legacy / Outback BIU Interchangeability
03/10 2010MY Forester “Resonating” Noise When Using the Horn
05/10 2010MY Forester Dome Light Erratic Opeartion
10/10 2010~2011 Driver’s AUTO-UP Reset Information
01/11 2008~2011 Impreza- Front Turn Signals Blink Too Fast
05/11 Remote Trunk Release Inoperative After BIU Replacement
05/11 2008 M/Y and Later Impreza Stop Light Switch Information
05/11 Sunroof Operation Service Bulletins
06/11 New DTC’s After Bulkhead Harness Replacement
07/11 CAN System Diagnostic Information
08/11 Immobilizer Codes Stored, Engine Starts and Stalls Condition
10/11 2011MY Impreza High Beams Not Bright Enough
11/11 Headlight Aiming Precautions.
12/11 Tom-Tom Equipped Volume Control Information
01/12 2012MY Impreza, No Start, SBF-6 Blown
03/12
2012 Impreza Key Information
Shift Indictor Light App;ocabo;ity, 2012MY Impreza
Battery Testing – The Importance of Using the right Standard
05/12 Re-programming Information for all 2011-2012MY Vehicles
120
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Date Subject
06/12
Vehicles Equipped with EyeSight
BRZ Trunk Release Operation
Impreza Glove Box Light
2013MY BRZ Antitheft Security / Alarm System Activation
09/12
2013 BRZMY Auto Up/Down Window Feature
Push Button Start Vehicles Equipped with Remote Engine Start
10/12
EyeSight Camera Adjustment
Accesories and EyeSight
2013 Smart Engine Start
11/12 2013MY Legacy and Outback Accessory Charging
12/12 Electrical Devices and Airbag Systems
1/13
SDI Interface Box and Self Shut Timer
2014 Forester Select Monitor Operation
2013 Legacy/Outback Navigation System Volume Adjustment
2/13 2014 Forester Turbo, Battery Cable Precaution / DTC P060
3/13
Appearance of Water in BRZ Back-up Light
Voice Clarity
F-10 Diagnostics
Voice Recognition
121
June 2013
Electrical Systems Operation & Diagnosis Module (602)
122
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Supplemental
Information
123
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Supplemental Information
Audio and Navigation
Systems
Subaru Tribeca and Legacy
Navigation System (2006)
MAP SCREEN
The Subaru Navigation System has been
designed as an integral part of the vehicle
from the beginning of vehicle design. This
has provided a means of enhancing two way
communications between the vehicle operator
or navigator and onboard vehicle systems.
Onboard vehicle systems and features
include:
– Navigation
– Rear seat entertainment
– Fuel consumption and economy
– Maintenance reminders
– Calculator
– Customization of Navigation display
during Navigational and Non
Navigational displays
– Calendar
– Customization of the security and
keyless entry system
– Customization of adjustable passenger
compar tment audible and visual
features.
Navigation Components
Components of the Navigation include,
Navigation Computer, Navigation Display, GPS
antenna, remote buttons and DVD Rom.
UNDER DRIVER SEAT
The Navigation Computer is located under the
driver seat and is protected by metal guards and
a door that protects the front.
DOOR CLOSED
002
003
004
124
June 2013
Electrical Systems Operation & Diagnosis Module (602)
DOOR OPENED
The door must be opened to access the drive for
the DVD ROM and reset button. (Do not install or
remove a DVD ROM while the vehicle is motion)
NAVIGATION DISPLAY
The Navigation display is a Liquid Crystal
Diode type display that provides touch screen
control and communicates Navigation and
vehicle information to the driver and front seat
passenger.
ANTENNA LOCATION
ANTENNA CIRCLED
The GPS antenna is located behind the
combination and provides satellite signal inputs
to the Navigation Computer.
REMOTE BUTTONS
The remote buttons are located on the dash
above the radio controls and are used to control
many of the Navigation and on board features.
The Subaru Navigation system operates from
software contained in either of two DVD Roms.
The two DVD Roms are described as East or
West, containing navigation software for either
the east or west sections of the United States
and Canada.
005
006
007
008
009
125
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Navigation Operation
Map Screen
Pressing the map button will display the map
screen.
MAP SCREEN
Pressing the menu button on either the Navigation
Display or the remote button will display:
NAVIGATION MENU
• Destination entry
• Navigation set up
• Stored Locations
• Route options
• Language set up
SCHEMATIC
010
011
012
126
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Tribeca Rear Entertainment System
HEADLINER INTERIOR
The monitor and player are mounted in the
roof to offer visibility to all 2nd and 3rd seat
passengers.
DVD PLAYER
The rear seat entertainment system consists of
the 9 inch QVGA (Quarter Video Graphics Array)
monitor and DVD player, external inputs, remote
control and head phones.
The Quarter Video Graphics Array (QVGA)
provides a display screen with 320 x 240
resolution (240 x 320 in portrait mode). The
QVGA term has been established because the
display provides 25% of original VGA displays.
NAVIGATION DISPLAY
The driver and front seat passenger can view
the rear entertainment system through the
Navigation Display provided the vehicle is not
in motion and the parking brake is set. (Ignition
on-Parking brake set-Rear seat entertainmentauxiliary
button pushed-Audio button pushed)
REMOTE BUTTONS
Any time the display is changed for viewing
vehicle information or navigational display
viewing, the audio button will require pushing
to return to viewing of the rear entertainment
system.
Control for the rear entertainment system is
provided only through the use of the remote
control. The remote control is powered by one 3
volt CR2025 battery. Headphones can be used
when the driver has turned off the Rear seat
entertainment-auxiliary input into the radio or
desires to listen to the radio.
013
014
015
016
127
June 2013
Electrical Systems Operation & Diagnosis Module (602)
INFRARED
Sound from the rear entertainment system is projected to the rear of the vehicle through an infrared
LED assemble (The headphones must be in the line of sight of the monitor and player assembly)
REMOTE CONTROL
017
018
128
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Vehicle Information
If the ignition is turned off while the rear entertainment system is being used for DVD viewing, the
DVD will restart at the stopping point once the ignition is turned back on, however, the remote
control must be used to activate the monitor by pressing the DVD button. If the sound was being
broadcast over the vehicles sound system, the DVD will self start with the monitor off. If the audio
was only available through the head phones then the remote must be used to start the DVD
(Pressing the DVD button on the remote).
Pressing the info button will display last viewed of four possible information and customizing sources.
REMOTE BUTTONS
• Fuel economy
• Travel log
• Virtual Gauges
• Calculator
• SET
Notes :
019
129
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Legacy Audio System (2005-
2009)
BEAUTY SHOT
The 2005~2009 Legacy/Outback models are
available with one of 3 types of audio packages.
The owners manual provides detailed operating
instructions for each type. The 3 types of audio
packages are identified as type A, B or C. Each
progressive letter providing a higher level of
capabilities.
REAR VIEW OF RADIO
All 3 types are controlled through the Audio/
HVAC control panel.
REAR VIEW OF CONTROL PANEL
This panel carries the desired input signals from
the driver to the audio unit.
FRONT VIEW OF RADIO CONTROL PANEL
The panel also carries the HVAC signals
(Automatic A/C models) from the control panel,
through the radio and out to the HVAC actuators.
(Manual HVAC uses a cable for temperature
control.)
020
021
022
023
130
June 2013
Electrical Systems Operation & Diagnosis Module (602)
Satellite Audio Controls
AUDIO WIRING
Control Total Circuit Resistance
Mute 22.3
Volume – 88.5
Volume+ 192.2
Mode 335.5
Seek 602
Seek 1.142K
End of Circuit Resistance 4.68K
The satellite audio controls located on the steering wheel pad function by varying the resistance
between the 2 wires that lead from the radio chassis to the satellite audio control assemble.
The “end of circuit resistor” will send a high resistance value (approximately. 4.6 k ohms) to the
radio when no switches are closed maintaining the last set radio condition. Operating any of the
switches creates a parallel circuit, effecting the total circuit resistance.
The different resistance values operate the radio and only one control signal can be sent to the
radio at a time.
For example:
R4 = 360 Ω End of circuit resistance = 4680 Ω
RT= R1 x R2
R1 + R2
RT = 4680 x 360
4680 + 360
RT = 1684800
5040
RT= 334.29
024
131
June 2013
Electrical Systems Operation & Diagnosis Module (602)
2008 Navigation Impreza
Note: 2009 Forester utilizes the same
type of system
NAVIGATION SCREEN STARTING UP
NAVIGATION SCREEN DISPLAYING SUBARU LOGO
The navigation system built by Kenwood
contains the display, controls, audio unit and
navigation computer. The system will display
the Subaru logo at each engine start and then
proceed to the start up screen.
RADIO WITHOUT NAVIGATION
AGREE SCREEN
The operation of the navigation system and the
info display is the same as past models. (Except
the controls are all located on the Navigation
unit.)
INFO DISPLAY MAIN SCREEN
025
026
027
028
029
132
June 2013
Electrical Systems Operation & Diagnosis Module (602)
SET FUNCTIONS
TILT /EJECT SCREEN
The display of the Navi/Audio unit has a tilt
function that allows the screen to be adjusted
to 4 positions to allow for glare.
CD / DVD DRAWER
Changing of the CDs is accomplished by
pressing the DVD/CD button. This will tilt the
display almost 90 degrees to allow for installing
or removing music CDs or DVDs. (DVDs will only
display while the vehicle is not moving.)
Pressing the map button will tilt the display 90
degrees and automatically eject the currently
installed Map disc.
A navigation system software disc (shipped with
the vehicle) must be installed before the controls
of the Navi/Audio system will be displayed.
Press and HOLD the tilt button to open the unit
for software installation.
030
031
032
133
June 2013
Electrical Systems Operation & Diagnosis Module (602)
MAP DVD DRAWER
SHOWING SENSITIVITY IF OBSTRUCTED TO CLOSE
The word “close” on the now vertical panel
of the display indicates that the close control
is located on the now horizontal panel of the
display. Pushing the button will close the display
to the last tilt setting. The display close operation
is load sensitive and will stop the close function
if the display panel is obstructed.
Navigation Diagnosis (2008)
The Navi/Audio Unit contains a built in diagnosis
system. Start the engine and press the agree
button on the startup screen.
AUDIO OFF SCREEN
Next press the {Audio/Sat} button and turn the
audio off.
NOTE: ALL OTHER FUNCTIONS MUST
ALSO BE OFF.
Next tap the screen on the LEFT side and then
the RIGHT.
PROCESS OF ACTIVATING DIAGNOSTIC MODE
THERE MUST BE A TOTAL OF SIX (6)
ALTERNATING TAPS TO ACTIVATE
DIAGNOSTIC MODE.
Note: W hen the vehicle is placed into
reverse gear the radio volume is
automatically turned down.
033
034
035
036
134
June 2013
Electrical Systems Operation & Diagnosis Module (602)
DEALER DIAG MENU SCREEN
The Dealer Diagnostic Menu will now activate.
Next press {Vehicle Signal Info.}
NOTE: D iagnostic information is
currently only available in Vehicle
Signal Info. And Connection info.
Vehicle Signal Info. Provides the status of the
connections between the Navi/Audio Unit and:
Controller Area Network Signals
CAN
BCU – (BIU)
METER – (Combination Meter)
AIR-Con – (Air Conditioning)
Vehicle Signals:
Illumination Control
Speed Signal
Reverse
Ignition
Parking (Brake)
VEHICLE SIGNAL INFO. SCREEN
Pressing Menu will take you back to the Dealer
Diagnostic Menu.
Press {Connection Info.}
CONNECTION INFO. SCREEN
The only current connection is the Aux Input.
Press {Menu} to go back to the Dealer Diagnostic
Menu.
Press {Exit} to return to normal operation.
037 038
039
135
June 2013
Electrical Systems Operation & Diagnosis Module (602)
2010 Navigation System
AUDIO/NAVIGATION SYSTEM
The 2010 Audio/Navigation System is now
wired to the BIU using Universal Asynchronous
Receiver and Transmitter circuitry (UART) and
is not capable of displaying vehicle information
or allowing the BIU settings to be made through
the Navigation display.
NAVIGATION DVD DRIVE COVER
EJECT NAVIGATION DVD CONTROL
The eject control is located under the cover and
to the right of the drive.
INSTALLING NAVIGATION DVD
Movie DVDs can be installed in the CD drive.
Movies can only be viewed at the Navigation
display while the vehicle is stationary.
040
041
042
043
136
June 2013
Electrical Systems Operation & Diagnosis Module (602)
NAVIGATION SYSTEM AND RADIO ON BENCH REAR
VIEW
Seven (7) connectors
One (1) ground connector
One (1) antenna pig tail (The pig tail is attached
to the dash frame and must be released before
removing the Navigation system and radio from
the vehicle).
2012 Audio and Navigation
SD MEMORY CARD FUJITSU-TEN UNIT
Insert SD Card with the label facing the left side.
Make sure SD Card locks in. The SD Card is
programed with the Navigation Map Data. The
SD Card must be in place for the Navigation
System to operate.
DIAGNOSTIC MODE ACTIVATION
044
045
046
137
June 2013
Electrical Systems Operation & Diagnosis Module (602)
DIAGNOSTIC SCREEN
With the ignition ON and audio OFF, press and
hold button (c) for 3 seconds or more while
pressing the buttons (a) and (b).
Note: Diagnostic mode
can be cancelled by
pressing the button (a)
for 3 seconds or more,
or turning the ignition
OFF.
Note: Ejecting the SD Card
without following
proper procedures
may corrupt SD Card.
NOTE: Diagnostic mode
activation for all audio
systems can be found
in the “Entertainment
ET” section of the
Subaru Service
Manual.
2013 Legacy/Outback
SD card location on applicable 2013 Legacy/
Outback models.
SD Card Location
Note: See Subaru Owners Manual for
details.
SD Car Slot and Door
Note: Follow the directions on the
navigation display to correctly
remove the SD card.
047
048
049
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Combination Meters
(Legacy 2005)
COMBINATION METER (Example)
Turning the ignition key to the run position starts the light check cycle and activates the sweep of
all gauge needles. Pushing the Trip Meter stalk with the ignition off will illuminate the Trip Meter
display and activate the Fuel Gauge to show the actual fuel level.
051
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S-ON
The Combination Meter can be adjusted to
delete the sweep function of the gauges and the
sequential illumination. Turn the ignition key to
the accessory position. Push the Trip Meter stalk
2 times from the “B” Trip Meter or 3 pushes of the
Trip Meter stalk from the “A” Trip Meter. When the
“S-On” appears in the Trip Meter display push
and hold the Trip Meter stalk for 2 seconds until
the “S-Off” is displayed.
S-OFF
This feature can be used to turn the gauge
sweep off of all Legacy models. The GT models
can be adjusted to turn the gradual illumination
off. Push the Trip Meter stalk again while the
status of the gauge sweep is being displayed
and the display will change to “I-on”.
Push and hold the Trip Meter stalk for 2 seconds
until the display changes to “I-off”. Follow the
same procedure to turn the gauge sweep and
sequential illumination back on. In each case
the current status will be displayed. To change
it push and hold the Trip Meter stalk for at least
2 seconds. Pushing less than 2 seconds will
advance the display to the next item.
D CHECK CONNECTOR SIDE VIEW
The Combination Meter can be forced into a
D check procedure. A set of one pole white
connectors (2005MY only) are located on the
left side of the dash, near and above the hood
release handle.
D CHECK CONNECTOR SIDE VIEW
Plug the two white pole connectors together and
turn the ignition to the run position.
052
053
054
055
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GAUGE SWEEP
While the gauges are sweeping, push the Trip
Meter stalk 2 times. The D check will now begin.
All lights, gauges, beeps and displays will turn
on and off. This will allow for a visual and audible
check of all Combination Meter devices.
After the initial sweep the combination meter
can be controlled to advance in the D check,
one step at a time.
Push the trip meter stalk at the end of the initial
sweep. This will allow only certain items to be
checked.
Continue pressing the stalk as each item is
checked, until all items have been inspected.
MANUAL ADVANCE
Pushing Trip Meter Stalk 1 time will activate the
Trip Meter to display trouble codes. Push the Trip
Meter Stalk to advance the code display. The
codes will be displayed in the following order
on the list below.
ECM TCM ABS/VDC
This must be done when the Combination Meter
is not performing a D check.
Notes :
056 057
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Subaru Tribeca Combination
Meter
DASH
The Sweep and sequential illumination of the
Combination Meter can be turned on and off.
– Ignition key to accessory
– Press the Trip Meter stalk 3 times (or until
the “S” appears in the Trip Meter display).
– Press and hold the Trip Meter for more
than 2 seconds to change the “I” or “S”
setting.
“S-On” indicates the sweep function is on.
“S-off” indicates the sweep function is off.
“I-on” indicates the sequential illumination
is on. “I-off ” indicates the sequential
illumination is off.
The Combination Meter D check procedure is
accomplished by performing the following steps:
(begin the first push of the Trip Meter stalk
before the sweep function ends)
– Ignition off
– Ignition on, small light (parking lights from
the head light switch) on.
– Push Trip Meter 3 times
– Small light off
– Push Trip Meter 3 times
– Small light on
– Push Trip Meter 3 times
DTCs can be viewed on the Trip Meter by
following the steps above but push the Trip Meter
4 times in each step instead of 3 times.
Toggle through the DTCs by pressing the Trip
Meter stalk. The first set of codes will be for the
engine, followed by the transmission DTCs. The
ABS codes C- – – will be viewed on the Trip Meter
display, however, the new ABS/HCU does not
communicate DTCs to the Combination Meter.
Combination Meter D Check
Procedure of change over to DIAG mode.
Note: The number of times you push
the Trip Meter Knob on the
combination Meter is different
between the “DTC reading mode”
and the “self diagnosis mode”
1) Within 3 second after the IG switch turned
on, turn the illumination switch on, then
perform the following steps 2 to 4 within
the followed 10 seconds.
2) Push the “trip knob” 3 times while
illumination switch ON.
3) Turn the illumination switch off, then push
the trip knob 4 times. (3 times for Self
diagnosis mode)
4) Turn the illumination switch ON again,
push the trip knob 4 times. (3 times for
self diagnosis mode)
Now, the mode was changed to DTC
Reading mode or Self diagnosis mode of
the combination meter.
Note: The white diagnostic connector
at the fuse-box under the
instrumental panel is eliminated.
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NATURALLY ASPIRATED MODEL COMBINATION METER
2008 and newer Impreza models are equipped with a sequential sweep and WRX models are
equipped with sequential illumination. The combination meter has an available D check procedure.
Turbo models are equipped with a temperature gauge and the Naturally Aspirated models
are equipped with a temperature warning light.
Temperature warning light logic
< 50°C (122°F) Blue 113°C (235°F) Red Blink 120°C (248°F) Red On The Red indicator will turn off after the temperature has dropped to 111°C (232°F). The light will change to blue after the temperature has dropped to 45°C (113°F). (BIU controlled) Note: This temperature warning light logic is applicable for 2009 and newer Forester models. 059 143 June 2013 Electrical Systems Operation & Diagnosis Module (602) 2012 Impreza Combination Meter The Combination Meter checks and customizing features can now be checked and set with the SSMIII. Previous models required manipulation of the headlight switch and trip-meter stalks. COMBINATION METER COMBINATION METER FRONT VIEW COMBINATION METER REAR VIEW 060 061 062 144 June 2013 Electrical Systems Operation & Diagnosis Module (602) Rear Vision Camera REAR VISION CAMERA ON BACK GATE REAR VIEW IMAGE ON LCD SCREEN A rear vision camera is now standard on all 2007 and newer navigation-equipped models. The system displays an image of behind the vehicle with reference lines to aid in backing up/parking. The image is shown on the high-resolution LCD screen only when the transmission is in reverse. This system will turn the LCD screen on when going into reverse even if the LCD screen has been turned off. This system is factory installed. 064 065 145 June 2013 Electrical Systems Operation & Diagnosis Module (602) REAR VIEW CAMERA ELECTRICAL SCHEMATIC 066 146 June 2013 Electrical Systems Operation & Diagnosis Module (602) 147 June 2013 Electrical Systems Operation & Diagnosis Module (602) Supplemental Information for Keyless Entry Registration of Newer Vehicles 2012 to 2013 Impreza (Immobilizer Type B) 2012 to 2013 Impreza Registration of Keyless Transmitter with Subaru Select Monitor A maximum of four keyless transmitters can be registered for each individual vehicle. When replacing or adding the keyless transmitter, new registration of each transmitter is necessary. Turn the ignition switch to OFF. On the “Main Menu” of the SSMIII, select: 1. All other models 2. Each System Check 3. Integ. unit mode 4. Work Support 5. Press “Keyless ID registration”. 6. Press “YES” after confirming ignition off and key removed. 148 June 2013 Electrical Systems Operation & Diagnosis Module (602) 7. Buzzer sounds once for each key registered. 8. Repeat the registration as many times as desired up to maximum (4). 9. Press “OK” when complete. 149 June 2013 Electrical Systems Operation & Diagnosis Module (602) BRZ Keyless Entry System {Mechanical Key} Key Registration BRZ Mechanical Key To register a new keyless ID while keeping existing registered codes. A maximum of six keyless transmitters can be registered for each individual vehicle. If the number of registered codes exceeds 6, the first registered code is erased. On the “Main Menu” of the SSMIII, select: 1. Inspection of BRZ 2. Each System Check 3. Keyless Unit mode 4. Work Support 5. Press “Keyless ID registration”. 6. Press “Keyless ID addition registration”. 150 June 2013 Electrical Systems Operation & Diagnosis Module (602) 7. Start means to turn ignition on. Press “ON”. 8. Repeat the registration as many times as desired up to maximum (6). Press “Completed” when done. Turn ignition to on Press lock and unlock at same time >.8 seconds.
Press lock or unlock to confirm (Beep)
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BRZ with Keyless Access and Push Button Start (KAC)
BRZ (KAC)
Key Registration (Additional key ID registration)
A maximum of seven keyless transmitters can be registered for each individual vehicle.
1. Prepare all electrical key transmitter sub-assemblies to be registered and place them
outside vehicle.
2. Hold 1 registered key transmitter sub-assembly inside vehicle.
3. While holding transmitter turn ignition switch “ON”.
4. Turn on SSMIII
On the “Main Menu” of the SSMIII, select:
5. Main Menu
6. Inspection of BRZ
7. Immobilizer
8. Press “YES”
9. Press “OK”
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10. Press “Key Registration”.
11. Press “Next”.
12. Press “Next”.
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13. Key Code Registration Confirm: Hold a registered key to the Start Switch (SW).
14. Verification of unregistered key: Hold the unregistered key to the Start Switch (SW).
15. Confirm a Beep after this step.
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Note: R emove each key from vehicle as it is registered before bringing the next key
to be registered into the vehicle.
R epeat the registration as many time as desired up to the maximum (7).
16. Press “Register” when done with all keys.
17. Press “Next”.
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Legacy and Outback Keyless Access and Push Button Start (KAC)
Legacy / Outback Key (KAC)
Key Registration (Additional key ID registration)
A maximum of seven keyless transmitters can be registered for each individual vehicle.
1. Prepare all electrical key transmitter sub-assemblies to be registered and place them
outside vehicle.
2. Hold 1 registered key transmitter sub-assembly inside vehicle.
3. While holding transmitter turn ignition switch “ON”.
4. Turn on SSMIII
On the “Main Menu” of the SSMIII, select:
5. Main Menu
6. All other models
7. Immobilizer
8. Press “Yes”.
9. Press “Yes”.
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10. Press “Smart Immobilizer Registration”.
11. Press “OK”.
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12. Key Code Registration Confirm: Hold a registered key to the Start Switch (SW).
13. Verification of unregistered key: Hold the unregistered key to the Start Switch (SW).
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Note: Keep key inside of vehicle for 10 seconds before proceeding to next key.
R emove each key from vehicle as it is registered before bringing the next key
to be registered into the vehicle.
R epeat the registration as many time as desired up to the maximum (7).
14. Registered number will increase as each key is added, a buzzer will also sound twice
after each key is added.
Press “Quit” when done.
15. Hold up a newly registered key to the Start Switch (SW).
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16. Press “Ok”.

MSA5P0135C

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