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>VEHICLE DYNAMICS CONTROL SYSTEM .

Courtesy 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".

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 .
CHECK VDC OFF SWITCH .
Using the Subaru Select Monitor and while the engine is running, display the [OFF SW Signal] o[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 .
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.
CHECK VDC OFF SWITCH CIRCUIT .
1. Disconnect the connector from the VDCCM&H/U.
2. Measure the resistance between VDCCM&H/U connector and chassis ground.
  Connector and terminal
  
  (B310) No. 41 - Chassis ground:
Is the resistance less than 10 Ω?

Yes : Check the VDC OFF switch circuit.

No : Go to 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.
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 VDCCM&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 .