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Home › Subaru › 2018 › Crosstrek Base, Automatic CVT Trans › Repair and Diagnosis › Brakes › Traction Control › Brake Control System (Diagnostics) › Warning Light Illumination Pattern › VDC Off Indicator Light Does Not Go Off

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 (CROSSTREK MODEL)>VEHICLE DYNAMICS CONTROL SYSTEM .

G11257670Courtesy of SUBARU OF AMERICA, INC.
  1. READ DTC  .

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

    DTC Check 

    Is DTC displayed?

    Yes:  Perform the diagnosis according to DTC. Ref. to BRAKE CONTROL (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST .

    No:  Go to  2.

  2. CHECK VDC OFF SWITCH  .

    Connect the Subaru Select Monitor, and display the data monitor of VDC CONTROL MODULE with the engine started. Ref. to BRAKE CONTROL (DIAGNOSTICS)>DATA MONITOR .

    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. 32-Chassis ground:

    Is the resistance less than 10 Ω?

    Yes:  Check the VDC OFF switch circuit.

    No:  Go to  5.

  5. CHECK LAN SYSTEM  .

    Perform the diagnosis for LAN system using the Subaru Select Monitor. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .

    Is DTC of CAN communication displayed?

    Yes:  Perform the diagnosis according to DTC. Ref. to LAN SYSTEM (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST .

    No:  Go to  6.

  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 .

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