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HOMESERVICE MANUALSSUBARU2014LEGACY 2.5I, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 54 (SECURITY AND LOCKS)KEYLESS ENTRY SYSTEMINSPECTIONCHECK KEYLESS ENTRY CONTROL MODULE
2014 Subaru Legacy 2.5i, Automatic CVT Trans

Check Keyless Entry Control Module

2014 Subaru Legacy 2.5i, Automatic CVT TransSECTION Check Keyless Entry Control Module
WARNING: This page is about a different car, the 2014 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
Step Check Yes No
1 CHECK BODY INTEGRATED UNIT  .
Read the DTC using Subaru Select Monitor.
NOTE: For detailed procedures, refer to "PC application help for Subaru Select Monitor".
 Is DTC B1500 "Keyless UART com. Malfunction" displayed? Go to step 2  . Keyless entry control module is normal.
2 CHECK POWER SUPPLY. 
  1. Disconnect the keyless entry control module connector.
  2. Measure the voltage between keyless entry control module connector and chassis ground.

    Connector & terminal 

    Model without tire pressure monitoring system 

    (R80) No. 4 (+) - Chassis ground (-): 

    Model with tire pressure monitoring system 

    (R221) No. 6 (+) - Chassis ground (-): 

 Is the voltage 10 V or more? Go to step 3  . Check the harness for open or short circuits between the keyless entry control module and the fuse.
3 CHECK POWER SUPPLY (MODEL WITH TPMS ONLY). 
Measure the voltage between connector and chassis ground.
Connector & terminal 
(R221) No. 4 (+) - Chassis ground (-): 		 IGN OFF: 0 V
IGN ON: 10 V or more?		 Go to step 4  . Check the harness for open or short circuits between the keyless entry control module and the fuse.
4 CHECK GROUND CIRCUIT. 
Measure the resistance between keyless entry control module connector and chassis ground.
Connector & terminal 
Model without tire pressure monitoring system 
(R80) No. 7 - Chassis ground: 
Model with tire pressure monitoring system 
(R221) No. 5 - Chassis ground: 		 Is the resistance less than 10 Ω? Go to step 5  . Repair or replace the harness.
5 CHECK KEYLESS ENTRY CONTROL MODULE CIRCUIT. 
  1. Disconnect the body integrated unit connector.
  2. Check the harness between keyless entry control module and body integrated unit.

    Connector & terminal 

    Model without tire pressure monitoring system 

    (i171) No. 11 - (R80) No. 3: 

    Model with tire pressure monitoring system 

    (i171) No. 11 - (R221) No. 11: 

 Is harness normal? Replace the keyless entry control module. Repair or replace the harness.
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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