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Check Keyless Entry Control Module

WARNING: This page is about a different car, the 2016 Subaru Outback and 2016 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK BODY INTEGRATED UNIT. 
Read the DTC using Subaru Select Monitor.
NOTE: For detailed operation procedures, refer to "Application help".
 Is DTC U1500 "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 

    (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 GROUND CIRCUIT. 
Measure the resistance between keyless entry control module connector and chassis ground.
Connector & terminal 
(R221) No. 5 - Chassis ground: 
(R221) No. 4 - Chassis ground: 		 Is the resistance less than 10 Ω? Go to step 4  . Repair or replace the harness.
4 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 

    (i81) No. 11 - (R221) No. 11: 

 Is harness normal? Replace the keyless entry control module. Repair or replace the harness.
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