VDC Off Indicator Light Does Not Go Off

Detecting condition: 

• Defective combination meter
• Defective CAN communication
• VDC OFF switch is shorted.

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 (HEV)>VEHICLE DYNAMICS CONTROL SYSTEM .

Courtesy of SUBARU OF AMERICA, INC.

1. READ DTC  .

   Read the DTC of [Brake Control] using the Subaru Select Monitor, Ref. to BRAKE CONTROL (DIAGNOSTICS) (HEV)>DIAGNOSTIC TROUBLE CODE (DTC) .

   Is DTC displayed?

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

   No  : Go to  2.

2. CHECK VDC OFF SWITCH  .

   Using the Subaru Select Monitor, read data of [OFF SW Signal] in the [Data Monitor] of [Brake Control] while the engine is running, Ref. to BRAKE CONTROL (DIAGNOSTIC) (HEV)>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. 28 - 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) (HEV)>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 (VDCCM & H/U) .

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