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VDC Off Indicator Light Does Not Go Off

Detecting condition: 

Trouble symptom: 

VDC OFF indicator light does not go off when starting the engine.

Wiring diagram: 

Vehicle dynamics control system Ref. to WIRING SYSTEM>VEHICLE DYNAMICS CONTROL SYSTEM .

G13228415Courtesy of SUBARU OF AMERICA, INC.
NOTE: This diagnosis is applied to models with high grade X mode and models without X mode. VDC OFF indicator light illuminates when X mode is "D.SNOW/MUD".
  1. READ DTC. 

    Read the DTC using Subaru Select Monitor. Ref. to BRAKE CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

    Is DTC displayed?

    Yes:  Perform the diagnosis according to the DTC. Ref. to BRAKE CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST .

    No:  Go to  2.

  2. CHECK VDC OFF SWITCH. 

    Using the Subaru Select Monitor and while the engine is running, display the [OFF SW Signal] of [Data Monitor]. Ref. to BRAKE CONTROL (DIAGNOSTICS)>DATA MONITOR .

    Does [OFF SW Signal] change according to operation of VDC OFF switch?

    Yes:  Go to  5.

    No:  Go to  3.

  3. CHECK VDC OFF SWITCH. 

    Remove and check VDC OFF switch. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC OFF SWITCH .

    Is the check result OK?

    Yes:  Go to  4.

    No:  Replace the VDC OFF switch.

  4. CHECK VDC OFF SWITCH CIRCUIT. 
    1. Disconnect the connector from the VDC Control Module & H/U.
    2. Measure the resistance between VDC Control Module & H/U connector and chassis ground.

      Connector & terminal 

      (B310) No. 41 - Chassis ground:

      Is the resistance less than 10 Ω?

      Yes:  Check the VDC OFF switch circuit.

      No:  Go to  5.

  5. CHECK LAN SYSTEM. 

    Check the LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .

    Is the check result OK?

    Yes:  Go to  6.

    No:  Perform the diagnosis for LAN system.

  6. CHECK COMBINATION METER. 

    Check the combination meter. Ref. to INSTRUMENTATION/DRIVER INFO>COMBINATION METER SYSTEM>OPERATION>SELF-DIAGNOSIS DISPLAY MODE .

    Is the check result OK?

    Yes:  Replace the VDC Control Module & H/U. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDC Control Module & H/U) .

    No:  Replace the combination meter. Ref. to INSTRUMENTATION/DRIVER INFO>COMBINATION METER>REMOVAL .

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