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 .
- READ DTC
.
Read the DTC. Ref. to BRAKE CONTROL (DIAGNOSTICS)>Read Diagnostic Trouble Code (DTC) .
Is DTC displayed?
Yes: Perform the diagnosis according to DTC. Ref. to BRAKE CONTROL (DIAGNOSTICS)>List of Diagnostic Trouble Code (DTC) .
No: Go to 2.
- CHECK VDC OFF SWITCH
.
Connect the Subaru Select Monitor, and display the data monitor of VDCCM with the engine started.
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
.
- Disconnect the connector from the VDCCM&H/U.
- Measure the resistance between VDCCM&H/U connector and chassis ground.
Connector & terminal
(B310) No. 12 - Chassis ground:
Is the resistance less than 10 Ω
Yes: Check the VDC OFF switch circuit.
No: Go to 5.
- CHECK LAN SYSTEM
.
Perform the diagnosis for LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .
Is there any fault in LAN system?
Yes: Perform the diagnosis according to DTC for LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .
No: Go to 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 VDCCM only. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC Control Module and Hydraulic Control Unit (VDCCM & H/U)>REPLACEMENT .
No: Replace the combination meter. Ref. to INSTRUMENTATION/DRIVER INFO>Combination Meter>REMOVAL .