FixVault
Home › Subaru › 2006 › Impreza WRX TR › Repair and Diagnosis (Single Page) › Body & Frame › Door Locks › Security And Locks › Keyless Entry System › Inspection › Check Output Signal To Body Integrated Module

Check Output Signal To Body Integrated Module

CHECK OUTPUT SIGNAL TO BODY INTEGRATED MODULE

Step Check Yes No
1 CHECK OUTPUT SIGNAL. 
Measure the voltage between the keyless entry control unit harness connector terminal and chassis ground when UNLOCK/DISARM button of transmitter is pressed.
Connector & terminal 
(B176) No. 18 (+) - Chassis ground (-): 		 Is the voltage more than 10 V? Go to step 2.  Replace the keyless entry control unit.
2 CHECK OUTPUT SIGNAL. 
Measure the voltage between the keyless entry control unit harness connector terminal and chassis ground when LOCK/ARM button of transmitter is pressed.
Connector & terminal 
(B176) No. 19 (+) - Chassis ground (-): 		 Is the voltage more than 10 V? Go to step 3.  Replace the keyless entry control unit.
3 CHECK HARNESS BETWEEN KEYLESS ENTRY CONTROL UNIT AND BODY INTEGRATED MODULE. 
  1. Disconnect the keyless entry control unit harness connector and body integrated module harness connector.
  2. Measure the resistance between the keyless entry control unit harness connector terminal and body integrated module harness connector terminal.

    Connector & terminal 

    (B176) No. 18 - (B281) No. 14: 

    (B176) No. 19 - (B281) No. 13: 

 Is the resistance less than 10 Ω? Replace the body integrated module. Check the harness for open circuit or shorts between the keyless entry control unit and body integrated module.
About FixVault