NHTSA ID Number: 10219482
Manufacturer Communication Number: 15-300-22
Summary
This Bulletin provides the diagnostic procedure for the STARLINK® Remote Engine Start (RES). All Gen2 Telematic equipped models.
NUMBER: 15-300-22
DATE: 08/29/22
| APPLICABILITY: | All Gen2 Telematic Equipped Models |
| SUBJECT: | STARLINK® Telematics Remote Engine Start Only runs 15 seconds after successful engine start |
INTRODUCTION:
This Service Information Bulletin provides the diagnostic procedure for the STARLINK® Remote
Engine Start (RES). In some cases, after successfully initiating STARLINK® Telematics Remote Engine Start, the vehicle will run for only 15 seconds and then turn off. The information contained in this bulletin is only to be used when diagnosing this described condition. The information in this bulletin DOES NOT apply to the Subaru Long Range Remote Start Accessory.
| Applicability | |||||||
| Model | MY 2016 | MY 2017 | MY 2018 | MY 2019 | MY 2020 | MY 2021 | MY 2022 |
| Ascent | n/a | n/a | n/a | Gen 2 | Gen 2 | Gen 2 | Gen 2 |
| Crosstrek | Gen 1 | Gen 1 | Gen 1 | Gen 2 | Gen 2 | Gen 2 | Gen 2 |
| Crosstrek Hybrid | n/a | n/a | n/a | Gen 2 | Gen 2 | Gen 2 | Gen 2 |
| Forester | Gen 1 | Gen 1 | Gen 1 | Gen 2 | Gen 2 | Gen 2 | Gen 2 |
| Impreza | Gen 1 | Gen 1 | Gen 1 | Gen 2 | Gen 2 | Gen 2 | Gen 2 |
| Legacy | Gen 1 | Gen 1 | Gen 1 | Gen 1 | Gen 2 | Gen 2 | Gen 2 |
| Outback | Gen 1 | Gen 1 | Gen 1 | Gen 1 | Gen2 | Gen 2 | Gen 2 |
| WRX | n/a | Gen 1 | Gen 1 | Gen 1 | Gen 1 | Gen 1 | Gen 2 |
| BRZ | n/a | n/a | n/a | n/a | n/a | n/a | Gen 2 |
Service Procedure / Information:
REMINDER: Customer satisfaction and retention starts with performing quality repairs.
The use of this document relies heavily on electrical system information, wiring schematics, diagrams, components connector locations and testing methods that are found in the Body & Electrical / Wiring System Sections of the Subaru Technical Information System (STIS). A Technician should be proficient with their use of STIS and possess advanced electrical diagnosis skills before attempting to use this document. Due to the complexity of the test procedure and the electrical systems involved, it is essential that the Technician practices strict adherence to the process and take particular care not to introduce a secondary fault(s) into these systems. Any improper testing methodology could lead to unnecessary component damage/replacement or harness damage. When engaging Techline with questions, be prepared with DVOM measurements or oscilloscope patterns for every step of the diagnostic procedure. Failure to provide accurate measurements and review of your testing methodology will significantly impede Techline’s ability to provide efficient support.
IMPORTANT: This procedure looks for incorrect or induced voltages to the circuit by outside influence on the Data Control Module (DCM), Keyless Access Control Module (KACM), Engine Control Module (ECM), and Body Integrated Unit (BIU) power supply circuits. Taking extra time inspecting the vehicle for aftermarket accessories installed is critical, so that test results are not skewed. Accessories such as backup cellphone batteries plugged into USB ports or battery jump packs plugged into 12V charging ports can back feed voltage and influence vehicle operation, including the test results.
The retailer should secure the use of the customer’s MySubaru account during the diagnosis for this concern. There will be significant STARLINK® Remote Engine Start use during diagnosis and repair. Relying only on the customer to perform RES is inefficient and unreliable for this testing.
CRITICAL: Use of this trouble tree assumes that the telematics system is clear of any current DTCs and passes operational checks other than expected remote engine start operation. If there are any current telematics DTCs or observed unexpected behavior, consult with Techline or your Field Service Engineer prior to use of this trouble tree.
1. PRELIMINARY CHECKS
1. Confirm there are no aftermarket accessories installed in the vehicle.
2. Make sure nothing is plugged into any of the USB ports.
3. Make sure a cell phone is not sitting on the charging pad if equipped.
4. Pull Fuse No. 4 in passenger side fuse box.
5. With Push Button off and Engine Off check both sides of Fuse No. 4 in the passenger side fuse panel for voltage by applying the negative test lead to ground and the positive lead to both sides of the fuse.
IS VOLTAGE AT FUSE NO. 4 GREATER THAN 1 VOLT?
YES: Go to Step 2: ACCESSORY RELAY NO. 1.
NO: 0 V found at both sides of Fuse No. 4. Go to Step 6: KACM A19
2. ACCESSORY RELAY NO. 1
1. Remove accessory relay 1 from passenger side fuse panel.
2. With Push Button off and Engine Off check both sides of Fuse No. 4 in the passenger side fuse panel for voltage by applying the negative test lead to ground and the positive lead to both sides of the fuse.
IS VOLTAGE AT FUSE NO. 4 GREATER THAN 1 VOLT?
YES: Go to Step 3: ACCESSORY FUSE.
NO: Go to Step 2a: ACCESSORY RELAY NO. 1 PART 2.
2a. ACCESSORY RELAY NO. 1, PART 2
1. Swap accessory relay 1 with accessory relay 2.
2. With Push Button off and Engine Off check both sides of Fuse No. 4 in the passenger side fuse panel for voltage by applying the negative test lead to ground and the positive lead to both sides of the fuse.
IS VOLTAGE AT FUSE NO. 4 GREATER THAN 1 VOLT?
YES: Go to Step 4: KACM
NO: Replace accessory relay 1 that should now be installed in accessory relay 2 position. Go to Step 8: REINSTALL AND RETEST.
3. ACCESSORY FUSE
1. Remove accessory fuse feeding terminal A20 of the DCM from the driver’s side fuse panel.
Ascent / Crosstrek / Forster / Impreza = Fuse No. 54 (ACC)
Legacy / Outback / WRX = Fuse No. 51 (ACC)
2. With Push Button off and Engine Off check both sides of Fuse No. 4 in the passenger side fuse panel for voltage by applying the negative test lead to ground and the positive lead to both sides of the fuse.
IS VOLTAGE AT FUSE NO. 4 GREATER THAN 1 VOLT?
YES: Find short to power or unexpected power supply on circuit between Fuse No. 4 of passenger fuse panel and Accessory Fuse feeding terminal A20 of DCM in drivers fuse panel.
NO: Reinstall Accessory Fuse. Determine components fed by Accessory Fuse in drivers fuse box and disconnect them one at a time retesting at Fuse No. 4 after each component is removed to determine if it is the source of the unexpected voltage.
After repair of above findings (either short to power at harness or component supplying unexpected voltage) go to Step 8: REINSTALL AND RETEST.
4. KACM
1. Disconnect KACM.
2. With Push Button off and Engine Off check both sides of Fuse No. 4 in the passenger side fuse panel for voltage by applying the negative test lead to ground and the positive lead to both sides of the fuse.
IS VOLTAGE AT FUSE NO. 4 GREATER THAN 1 VOLT?
YES: Go to Step 5: KACM ISOLATION
NO: Replace KACM. Go to Step 8: REINSTALL AND RETEST.
5. KACM ISOLATION
1. Remove Accessory relay 1 and accessory relay 2 from the passenger fuse panel.
2. Using DVOM with red lead connected to terminal A16 of KACM connector and black lead connected to the under-hood battery negative terminal measure resistance.
IS RESISTANCE AT TERMINAL A16 LESS THAN 1 MEGA OHM?
YES: Short to ground indicated on circuit. Replace harness.
NO: DVOM indicates OL. Replace KACM. Go to Step 8: REINSTALL AND RETEST.
NOTE: The prerequisite for moving to Step 6: KACM A19 is with Pushbutton off, Engine Off there is no voltage at Fuse No. 4 of the passenger side fuse panel. If voltage is still present at Fuse No. 4 start testing over at Step 1: PRELIMINARY CHECKS or contact Techline for assistance before proceeding.
6. KACM A19
1. Measure the voltage change at the A19 terminal (back probing) of the KACM when the remote engine starting operation is performed.
WHAT IS THE VOLTAGE AT TERMINAL A19 OF THE KACM?
Voltage at A19 is always 0 V: Go To Step 6a: KACM A19 ALWAYS 0 VOLTS
Voltage at A19 is always 12 V: Go To Step 6b: KACM A19 ALWAYS 12 VOLTS
Voltage at A19 varies 12V – 0V – 12V: Go To Step 6c: KACM A19 VARYING VOLTAGE.
6a. KACM A19 ALWAYS 0 VOLTS
1. Performing step 6.1 the DVOM always read 0 volts at the A19 terminal (back probing) of the KACM when the remote engine starting operation is performed.
IS THE VOLTAGE AT TERMINAL A19 OF KACM ALWAYS 0 VOLTS?
Perform inspection of harness for abnormalities such as open circuit or excessive resistance. Was harness abnormality found?
YES: Replace Harness
NO: Replace KACM. Go to Step 8: REINSTALL AND RETEST.
6b. KACM A19 ALWAYS 12 VOLTS
1. Performing step 6.1 the DVOM always read 12 volts at the A19 terminal (back probing) of the KACM when the remote engine starting operation is performed.
IS THE VOLTAGE AT TERMINAL A19 OF KACM ALWAYS 12 VOLTS?
Perform inspection of harness for abnormalities such as short to power. Was harness abnormality found?
YES: Replace Harness
NO: Replace ECM. Go to Step 8: REINSTALL AND RETEST.
6c. KACM A19 VARYING VOLTAGE.
1. Performing step 6.1 the DVOM measurement varied 12V – 0V – 12 V at the A19 terminal (back probing) of the KACM when the remote engine starting operation is performed.
IS THE VOLTAGE AT TERMINAL A19 OF KACM VARYING 12V TO 0v TO 12V DURING RES OPERATION?
YES: Go to Step 7: KACM A16
NO: Replace KACM. Go to Step 8: REINSTALL AND RETEST.
7. KACM A16
1. Measure voltage at terminal A16 of KACM during remote engine start operation with an oscilloscope.
NOTE: Refer to STIS document MSA5T2101T Subaru Diagnostic Systems (SDS) (June 2021) pages 4-1 through 4-28 for oscilloscope operation.
WHAT IS THE VOLTAGE AT TERMINAL A16 OF THE KACM?
Voltage at A16 is always 0 V: Go To Step 7a: KACM A19 ALWAYS 0 VOLTS.
Voltage at A16 is always 12 V: Go To Step 7b: KACM A19 ALWAYS 12 VOLTS.
Voltage at A16 varies 12V – 0V – 12V: Go To Step 7c: KACM A19 VARYING VOLTAGE.
7a. KACM A16 ALWAYS 0 VOLTS.
1. Performing step 7.1 the oscilloscope always read 0 volts at terminal A16 of KACM during remote engine start operation.
NOTE: Refer to STIS document MSA5T2101T Subaru Diagnostic Systems (SDS) (June 2021) pages 4-1 through 4-28 for oscilloscope operation.
IS THE VOLTAGE AT TERMINAL A16 OF KACM ALWAYS 0 VOLTS?
Perform inspection of harness for abnormalities such as open circuit or excessive resistance. Was harness abnormality found?
YES: Replace Harness
NO: Replace KACM. Go to Step 8: REINSTALL AND RETEST.
7b. KACM A16 ALWAYS 12 VOLTS.
1. Performing step 7.1 the oscilloscope always read 12 volts at terminal A16 of KACM during remote engine start operation.
NOTE: Refer to STIS document MSA5T2101T Subaru Diagnostic Systems (SDS) (June 2021) pages 4-1 through 4-28 for oscilloscope operation.
IS THE VOLTAGE AT TERMINAL A16 OF KACM ALWAYS 12 VOLTS?
Perform inspection of harness for abnormalities such as short to power. Was harness abnormality found?
YES: Replace Harness
NO: Replace KACM. Go to Step 8: REINSTALL AND RETEST.
7c. KACM A16 VARYING VOLTAGE.
1. Performing step 7.1 the oscilloscope read 12V – 0V – 12V at terminal A16 of KACM during remote engine start operation with an oscilloscope.
NOTE: Refer to STIS document MSA5T2101T Subaru Diagnostic Systems (SDS) (June 2021) pages 4-1 through 4-28 for oscilloscope operation.
IS THE VOLTAGE AT TERMINAL A16 OF KACM VARYING 12V TO 0v TO 12V DURING RES OPERATION?
Perform inspection of terminal A16 of KACM for abnormalities such as intermittent open, excessive resistance or short to ground. Was harness abnormality found?
YES: Replace Harness
NO: Replace BIU. Go to Step 8: REINSTALL AND RETEST.
8. REINSTALL and RETEST.
1. Reinstall all components removed for testing.
2. Retest operation of Remote Engine Start for expected behavior.
DOES RES EXHIBIT BEHAVIOR OF RUNNING 15 SECONDS THEN SHUTTING OFF?
YES: Go to Step 1: PRELIMINARY CHECKS.
NO: If RES starts as expected and runs for the selected period vehicle is repaired and no further action is necessary.
19 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| SUBARU | CROSSTREK | 2021-2022 |
| SUBARU | CROSSTREK HYBRID | 2021-2022 |
| SUBARU | FORESTER | 2021-2022 |
| SUBARU | IMPREZA | 2021-2022 |
| SUBARU | LEGACY | 2021-2022 |
| SUBARU | LEVORG | 2022 |
| SUBARU | OUTBACK | 2021-2022 |
| SUBARU | SOLTERRA | 2023 |
| SUBARU | WRX | 2021-2022 |
| SUBARU | WRX STI | 2021-2022 |
| SUBARU | XV CROSSTREK | 2022 |
1 Associated Document
Manufacturer Communications
NUMBER: 15-300-22
DATE: 08/29/22
https://www.nhtsa.gov/recalls?nhtsaId=10219482
MC-10219482-0001.pdf 1430.85KB
- Genuine OEM
- High quality
- Dependability
- Remote engine start kit for 2019 2020 FORESTER APPLICABLE TO PUSH START MODELS ONLY
- H001SSJ001
- Allows vehicle to be started by pushing a button from the convenience of home or the office (up to 400 feet away depending on obstructions) so that the vehicle’s interior temperature is more comfortable upon entry.
- Push Start works in conjunction with the Keyless Access and Start system. This Genuine Subaru Accessory is an alternative for customers who do not enroll in STARLINK Safety and Security Plus.
- 2019 2020 2021 2022 FORESTER
- Difference:【Key with PKE Function 】 the key has PKE Passive Keyless Entry function. 【 Key without PKE Function】the key don't have PKE Passive Keyless Entry function, but you can keyless entry by phone. The phone replace the key, when the phone near the car, the car unlock .
- 【Remote Engine Start/ Pre-warm or Pre-cool your car】Keep the air conditioner on after getting out of the car, use App or remote key to start engine outside the car, the air conditionerthe will turn on automatically. Remote Key start engine sensing distance is 50-150 meters.
- 【One Key Start/Keyless Entry Especially For Upgrading Old cars】Door will unlock when the remote key or mobile phone approch the car 2-5m. Fits for 95% DC12V compact, sedan, coupes, SUVs, pick-ups on the market. For Honda /Nissan /Chevy/Mercedes Benz/Jeep Cherokee more.
- 【 Build-in Lock Security system】After you lock the car, it will emit 5 beeps when it is touched illegally. When start the car and step on the foot brake, the central locking system will be locked, don't worry the kids will open the door when driving.
- 【Important】Without this step, you can't use remote start function【Auto Car】 When the car in start-up state, put the car gear in”P” or “N” position and pull up hand-brake on, press the start button for 2 , the led inside transmitter will flash slowlyWhen you get off the car, to shut down the engine and lock the car, then remote start function is actived.【Mantal Car】Step on footbrake, long press the third and the fourth button at the same time on remote key for 4s
- Pre-heat or pre-cool the vehicle's interior without entering your vehicle
- Fully integrated into the vehicle's existing factory security/keyless entry system
- Engine starts with quick, three-step sequence
- BITTER TASTE DISCOURAGES SWALLOWING – Duracell Lithium Coin batteries are the only batteries with a non-toxic, bitter coating to help discourage swallowing
- CHILD-SECURE PACKAGING makes Duracell Lithium Coin battery packaging nearly impossible to open without scissors
- LONG-LASTING BATTERIES DESIGNED FOR DEPENDABILITY – Duracell Lithium Coin Batteries deliver the long-lasting power and performance you can count on for electronic devices throughout the home or on-the-go
- RELIABLE POWER – The Duracell 2032 3V Lithium Coin battery powers both everyday and essential home devices, including key fobs, remote controls, glucose monitors, thermometers, and many more
- GUARANTEED FOR 10 YEARS IN STORAGE – Holds power up to a decade in storage, so you can be confident these batteries will be ready when you need them
- BITTER TASTE DISCOURAGES SWALLOWING – Duracell Lithium Coin batteries are the only batteries with a non-toxic, bitter coating to help discourage swallowing
- CHILD-SECURE PACKAGING makes Duracell Lithium Coin battery packaging nearly impossible to open without scissors
- LONG-LASTING BATTERIES DESIGNED FOR DEPENDABILITY – Duracell Lithium Coin Batteries deliver the long-lasting power and performance you can count on for electronic devices throughout the home or on-the-go
- RELIABLE POWER – The Duracell 2025 3V Lithium Coin battery powers both everyday and essential home devices, including key fobs, remote controls, glucose monitors, thermometers, and many more
- GUARANTEED FOR 10 YEARS IN STORAGE – Holds power up to a decade in storage, so you can be confident these batteries will be ready when you need them
- affordable proucdts
- Editors of Haynes Manuals (Author)
- English (Publication Language)
- 320 Pages - 03/31/2015 (Publication Date) - Haynes Manuals N. America, Inc. (Publisher)
- 2 pack of Energizer 2025 Batteries, 3V Lithium Coin Batteries
- Performs in extreme temperatures from -22 F to 140 F
- Long-lasting choice for calculators, scales and remote batteries
- Coin cell batteries hold power for up to 10 years in storage
- Encased in child-resistant packaging to help keep kids safe from ingestion
Last update on 2023-05-10 / Affiliate links / Images from Amazon Product Advertising API
This product was presentation was made with AAWP plugin.
SEOCONTENT-START
Bulletin Number: 15-300-22; Date: 08/29/22 Page 1 of 9 SERVICE BULLETIN Continued… CAUTION: VEHICLE SERVICING PERFORMED BY UNTRAINED PERSONS COULD RESULT IN SERIOUS INJURY TO THOSE PERSONS OR TO OTHERS. Subaru Service Bulletins are intended for use by professional technicians ONLY. They are written to inform those technicians of conditions that may occur in some vehicles, or to provide information that could assist in the proper servicing of the vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do the job correctly and safely. If a condition is described, DO NOT assume that this Service Bulletin applies to your vehicle, or that your vehicle will have that condition. Subaru of America, Inc. is ISO 14001 Compliant ISO 14001 is the international standard for excellence in Environmental Management Systems. Please recycle or dispose of automotive products in a manner that is friendly to our environment and in accordance with all local, state and federal laws and regulations. NUMBER: 15-300-22 DATE: 08/29/22 APPLICABILITY: All Gen2 Telematic Equipped Models SUBJECT: STARLINK® Telematics Remote Engine Start Only runs 15 seconds after successful engine start INTRODUCTION: This Service Information Bulletin provides the diagnostic procedure for the STARLINK® Remote Engine Start (RES). In some cases, after successfully initiating STARLINK® Telematics Remote Engine Start, the vehicle will run for only 15 seconds and then turn off. The information contained in this bulletin is only to be used when diagnosing this described condition. The information in this bulletin DOES NOT apply to the Subaru Long Range Remote Start Accessory. Applicability Model MY 2016 MY 2017 MY 2018 MY 2019 MY 2020 MY 2021 MY 2022 Ascent n/a n/a n/a Gen 2 Gen 2 Gen 2 Gen 2 Crosstrek Gen 1 Gen 1 Gen 1 Gen 2 Gen 2 Gen 2 Gen 2 Crosstrek Hybrid n/a n/a n/a Gen 2 Gen 2 Gen 2 Gen 2 Forester Gen 1 Gen 1 Gen 1 Gen 2 Gen 2 Gen 2 Gen 2 Impreza Gen 1 Gen 1 Gen 1 Gen 2 Gen 2 Gen 2 Gen 2 Legacy Gen 1 Gen 1 Gen 1 Gen 1 Gen 2 Gen 2 Gen 2 Outback Gen 1 Gen 1 Gen 1 Gen 1 Gen2 Gen 2 Gen 2 WRX n/a Gen 1 Gen 1 Gen 1 Gen 1 Gen 1 Gen 2 BRZ n/a n/a n/a n/a n/a n/a Gen 2 ATTENTION: GENERAL MANAGER q PARTS MANAGER q CLAIMS PERSONNEL q SERVICE MANAGER q IMPORTANT – All Service Personnel Should Read and Initial in the boxes provided, right. ©2022 Subaru of America, Inc. All rights reserved. Bulletin Number: 15-300-22; Date: 08/29/22 Page 2 of 9 Continued… Service Procedure / Information: REMINDER: Customer satisfaction and retention starts with performing quality repairs. The use of this document relies heavily on electrical system information, wiring schematics, diagrams, components connector locations and testing methods that are found in the Body & Electrical / Wiring System Sections of the Subaru Technical Information System (STIS). A Technician should be proficient with their use of STIS and possess advanced electrical diagnosis skills before attempting to use this document. Due to the complexity of the test procedure and the electrical systems involved, it is essential that the Technician practices strict adherence to the process and take particular care not to introduce a secondary fault(s) into these systems. Any improper testing methodology could lead to unnecessary component damage/replacement or harness damage. When engaging Techline with questions, be prepared with DVOM measurements or oscilloscope patterns for every step of the diagnostic procedure. Failure to provide accurate measurements and review of your testing methodology will significantly impede Techline’s ability to provide efficient support. IMPORTANT: This procedure looks for incorrect or induced voltages to the circuit by outside influence on the Data Control Module (DCM), Keyless Access Control Module (KACM), Engine Control Module (ECM), and Body Integrated Unit (BIU) power supply circuits. Taking extra time inspecting the vehicle for aftermarket accessories installed is critical, so that test results are not skewed. Accessories such as backup cellphone batteries plugged into USB ports or battery jump packs plugged into 12V charging ports can back feed voltage and influence vehicle operation, including the test results. The retailer should secure the use of the customer’s MySubaru account during the diagnosis for this concern. There will be significant STARLINK® Remote Engine Start use during diagnosis and repair. Relying only on the customer to perform RES is inefficient and unreliable for this testing. CRITICAL: Use of this trouble tree assumes that the telematics system is clear of any current DTCs and passes operational checks other than expected remote engine start operation. If there are any current telematics DTCs or observed unexpected behavior, consult with Techline or your Field Service Engineer prior to use of this trouble tree. Bulletin Number: 15-300-22; Date: 08/29/22 Page 3 of 9 Continued… 1. PRELIMINARY CHECKS 1. Confirm there are no aftermarket accessories installed in the vehicle. 2. Make sure nothing is plugged into any of the USB ports. 3. Make sure a cell phone is not sitting on the charging pad if equipped. 4. Pull Fuse No. 4 in passenger side fuse box. 5. With Push Button off and Engine Off check both sides of Fuse No. 4 in the passenger side fuse panel for voltage by applying the negative test lead to ground and the positive lead to both sides of the fuse. IS VOLTAGE AT FUSE NO. 4 GREATER THAN 1 VOLT? YES: Go to Step 2: ACCESSORY RELAY NO. 1. NO: 0 V found at both sides of Fuse No. 4. Go to Step 6: KACM A19 2. ACCESSORY RELAY NO. 1 1. Remove accessory relay 1 from passenger side fuse panel. 2. With Push Button off and Engine Off check both sides of Fuse No. 4 in the passengerside fuse panel for voltage by applying the negative test lead to ground and the positivelead to both sides of the fuse. IS VOLTAGE AT FUSE NO. 4 GREATER THAN 1 VOLT? YES: Go to Step 3: ACCESSORY FUSE. NO: Go to Step 2a: ACCESSORY RELAY NO. 1 PART 2. Bulletin Number: 15-300-22; Date: 08/29/22 Page 4 of 9 Continued… 2a. ACCESSORY RELAY NO. 1, PART 2 1. Swap accessory relay 1 with accessory relay 2. 2. With Push Button off and Engine Off check both sides of Fuse No. 4 in the passengerside fuse panel for voltage by applying the negative test lead to ground and the positivelead to both sides of the fuse. IS VOLTAGE AT FUSE NO. 4 GREATER THAN 1 VOLT? YES: Go to Step 4: KACM NO: Replace accessory relay 1 that should now be installed in accessory relay 2 position. Go to Step 8: REINSTALL AND RETEST. 3. ACCESSORY FUSE 1. Remove accessory fuse feeding terminal A20 of the DCM from the driver’s side fuse panel. Ascent / Crosstrek / Forster / Impreza = Fuse No. 54 (ACC) Legacy / Outback / WRX = Fuse No. 51 (ACC) 2. With Push Button off and Engine Off check both sides of Fuse No. 4 in the passengerside fuse panel for voltage by applying the negative test lead to ground and the positivelead to both sides of the fuse. IS VOLTAGE AT FUSE NO. 4 GREATER THAN 1 VOLT? YES: Find short to power or unexpected power supply on circuit between Fuse No. 4 of passenger fuse panel and Accessory Fuse feeding terminal A20 of DCM in drivers fuse panel. NO: Reinstall Accessory Fuse. Determine components fed by Accessory Fuse in drivers fuse box and disconnect them one at a time retesting at Fuse No. 4 after each component is removed to determine if it is the source of the unexpected voltage. After repair of above findings (either short to power at harness or component supplying unexpected voltage) go to Step 8: REINSTALL AND RETEST. Bulletin Number: 15-300-22; Date: 08/29/22 Page 5 of 9 Continued… 4. KACM 1. Disconnect KACM. 2. With Push Button off and Engine Off check both sides of Fuse No. 4 in the passenger side fuse panel for voltage by applying the negative test lead to ground and the positive lead to both sides of the fuse. IS VOLTAGE AT FUSE NO. 4 GREATER THAN 1 VOLT? YES: Go to Step 5: KACM ISOLATION NO: Replace KACM. Go to Step 8: REINSTALL AND RETEST. 5. KACM ISOLATION 1. Remove Accessory relay 1 and accessory relay 2 from the passenger fuse panel. 2. Using DVOM with red lead connected to terminal A16 of KACM connector and black lead connected to the under-hood battery negative terminal measure resistance. IS RESISTANCE AT TERMINAL A16 LESS THAN 1 MEGA OHM? YES: Short to ground indicated on circuit. Replace harness. NO: DVOM indicates OL. Replace KACM. Go to Step 8: REINSTALL AND RETEST. NOTE: The prerequisite for moving to Step 6: KACM A19 is with Pushbutton off, Engine Off there is no voltage at Fuse No. 4 of the passenger side fuse panel. If voltage is still present at Fuse No. 4 start testing over at Step 1: PRELIMINARY CHECKS or contact Techline for assistance before proceeding. Bulletin Number: 15-300-22; Date: 08/29/22 Page 6 of 9 Continued… 6. KACM A19 1. Measure the voltage change at the A19 terminal (back probing) of the KACM when the remote engine starting operation is performed. WHAT IS THE VOLTAGE AT TERMINAL A19 OF THE KACM? Voltage at A19 is always 0 V: Go To Step 6a: KACM A19 ALWAYS 0 VOLTS Voltage at A19 is always 12 V: Go To Step 6b: KACM A19 ALWAYS 12 VOLTS Voltage at A19 varies 12V – 0V – 12V: Go To Step 6c: KACM A19 VARYING VOLTAGE. 6a. KACM A19 ALWAYS 0 VOLTS 1. Performing step 6.1 the DVOM always read 0 volts at the A19 terminal (back probing) of the KACM when the remote engine starting operation is performed. IS THE VOLTAGE AT TERMINAL A19 OF KACM ALWAYS 0 VOLTS? Perform inspection of harness for abnormalities such as open circuit or excessive resistance. Was harness abnormality found? YES: Replace Harness NO: Replace KACM. Go to Step 8: REINSTALL AND RETEST. 6b. KACM A19 ALWAYS 12 VOLTS 1. . Performing step 6.1 the DVOM always read 12 volts at the A19 terminal (back probing) of the KACM when the remote engine starting operation is performed. IS THE VOLTAGE AT TERMINAL A19 OF KACM ALWAYS 12 VOLTS? Perform inspection of harness for abnormalities such as short to power. Was harness abnormality found? YES: Replace Harness NO: Replace ECM. Go to Step 8: REINSTALL AND RETEST. Bulletin Number: 15-300-22; Date: 08/29/22 Page 7 of 9 Continued… 6c. KACM A19 VARYING VOLTAGE. 1. Performing step 6.1 the DVOM measurement varied 12V – 0V – 12 V at the A19 terminal (back probing) of the KACM when the remote engine starting operation is performed. IS THE VOLTAGE AT TERMINAL A19 OF KACM VARYING 12V TO 0v TO 12V DURING RES OPERATION? YES: Go to Step 7: KACM A16 NO: Replace KACM. Go to Step 8: REINSTALL AND RETEST. 7. KACM A16 1. Measure voltage at terminal A16 of KACM during remote engine start operation with an oscilloscope. NOTE: Refer to STIS document MSA5T2101T Subaru Diagnostic Systems (SDS) (June 2021) pages 4-1 through 4-28 for oscilloscope operation. WHAT IS THE VOLTAGE AT TERMINAL A16 OF THE KACM? Voltage at A16 is always 0 V: Go To Step 7a: KACM A19 ALWAYS 0 VOLTS. Voltage at A16 is always 12 V: Go To Step 7b: KACM A19 ALWAYS 12 VOLTS. Voltage at A16 varies 12V – 0V – 12V: Go To Step 7c: KACM A19 VARYING VOLTAGE. 7a. KACM A16 ALWAYS 0 VOLTS. 1. Performing step 7.1 the oscilloscope always read 0 volts at terminal A16 of KACM during remote engine start operation. NOTE: Refer to STIS document MSA5T2101T Subaru Diagnostic Systems (SDS) (June 2021) pages 4-1 through 4-28 for oscilloscope operation. IS THE VOLTAGE AT TERMINAL A16 OF KACM ALWAYS 0 VOLTS? Perform inspection of harness for abnormalities such as open circuit or excessive resistance. Was harness abnormality found? YES: Replace Harness NO: Replace KACM. Go to Step 8: REINSTALL AND RETEST. Bulletin Number: 15-300-22; Date: 08/29/22 Page 8 of 9 Continued… 7b. KACM A16 ALWAYS 12 VOLTS. 1. . Performing step 7.1 the oscilloscope always read 12 volts at terminal A16 of KACM during remote engine start operation. NOTE: Refer to STIS document MSA5T2101T Subaru Diagnostic Systems (SDS) (June 2021) pages 4-1 through 4-28 for oscilloscope operation. IS THE VOLTAGE AT TERMINAL A16 OF KACM ALWAYS 12 VOLTS? Perform inspection of harness for abnormalities such as short to power. Was harness abnormality found? YES: Replace Harness NO: Replace KACM. Go to Step 8: REINSTALL AND RETEST. 7c. KACM A16 VARYING VOLTAGE. 1. Performing step 7.1 the oscilloscope read 12V – 0V – 12V at terminal A16 of KACM during remote engine start operation with an oscilloscope. NOTE: Refer to STIS document MSA5T2101T Subaru Diagnostic Systems (SDS) (June 2021) pages 4-1 through 4-28 for oscilloscope operation. IS THE VOLTAGE AT TERMINAL A16 OF KACM VARYING 12V TO 0v TO 12V DURING RES OPERATION? Perform inspection of terminal A16 of KACM for abnormalities such as intermittent open, excessive resistance or short to ground. Was harness abnormality found? YES: Replace Harness NO: Replace BIU. Go to Step 8: REINSTALL AND RETEST. Bulletin Number: 15-300-22; Date: 08/29/22 Page 9 of 9 8. REINSTALL and RETEST. 1. Reinstall all components removed for testing. 2. Retest operation of Remote Engine Start for expected behavior. DOES RES EXHIBIT BEHAVIOR OF RUNNING 15 SECONDS THEN SHUTTING OFF? YES: Go to Step 1: PRELIMINARY CHECKS. NO: If RES starts as expected and runs for the selected period vehicle is repaired and no further action is necessary. WARRANTY / CLAIM INFORMATION: There have been no changes made to the Warranty Labor Time Guide regarding these procedures. IMPORTANT REMINDERS: • SOA strongly discourages the printing and/or local storage of service information as previously released information and electronic publications may be updated at any time. • Always check for any open recalls or campaigns anytime a vehicle is in for servicing. • Always refer to STIS for the latest service information before performing any repairs.
SEOCONTENT-END
