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Home >> Subaru >> 2009 >> Forester XT >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Anti-Theft System - Security And Locks >> Keyless Entry System >> Inspection >> Check Keyless Entry Control Module
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Check Keyless Entry Control Module

DIAGNOSIS PROCEDURE CHART

Step Check Yes No
1 CHECK DIAGNOSTIC TROUBLE CODE (DTC)  .
  1. Prepare the Subaru Select Monitor kit.
  2. Turn the ignition switch to ON (engine OFF), and run the "PC application for Subaru Select Monitor".
  3. On the "System Selection Menu", select {Integ. unit mode}.
  4. Select the {Diagnostic Code(s) Display}.
  5. Check if the DTC is displayed.
 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 harness connector.
  2. Measure the voltage between harness connector terminal and chassis ground.

Connector & terminal 
(R80) No. 4 (+) - Chassis ground (-): 		 Is the voltage 10 V or more? Go to step 3  . Check the harness for open circuits and shorts between the keyless entry control module and fuse.
3 CHECK GROUND CIRCUIT  .
Measure the resistance between harness connector terminal and chassis ground.
Connector & terminal 
(iR80) No. 7 - 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 harness connector of body integrated unit.
  2. Measure the resistance between harness connector terminals.

Connector & terminal 
(i84) No. 24 - (R80) No. 3: 		 Is the resistance less than 10 Ω? Replace the keyless entry control module. Refer to KEYLESS ENTRY CONTROL MODULE . Repair or replace the harness.
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