Subaru Legacy BN/BS (2015-2019) Service Manual: Vdc off indicator light does not go off

Subaru Legacy BN/BS (2015-2019) Service Manual / Vehicle dynamics control (vdc) (diagnostics) / Warning light illumination pattern / Vdc off indicator light does not go off

DETECTING CONDITION:

• Defective combination meter

• Defective CAN communication

• VDC OFF switch is shorted.

TROUBLE SYMPTOM:

When starting the engine, VDC OFF indicator light is kept ON.

WIRING DIAGRAM:

NOTE:

For the coupling connector, refer to “WIRING SYSTEM”.

Vehicle dynamics control system Vehicle Dynamics Control System

STEP	CHECK	YES	NO
1.READ DTC. Read the DTC. Read Diagnostic Trouble Code (DTC)	Is DTC displayed-	Perform the diagnosis according to DTC. List of Diagnostic Trouble Code (DTC)	Warning Light Illumination Pattern > VDC OFF INDICATOR LIGHT DOES NOT GO OFF
2.CHECK VDC OFF SWITCH. Remove and check VDC OFF switch. VDC OFF Switch	Is the VDC OFF switch normal-	Warning Light Illumination Pattern > VDC OFF INDICATOR LIGHT DOES NOT GO OFF	Replace the VDC OFF switch.
3.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 & terminal (B310) No. 1 — Chassis ground:	Is the resistance less than 10 --	Check the VDC OFF switch circuit.	Warning Light Illumination Pattern > VDC OFF INDICATOR LIGHT DOES NOT GO OFF
4.CHECK LAN SYSTEM. Perform the diagnosis for LAN system. Basic Diagnostic Procedure	Is there any fault in LAN system-	Perform the diagnosis according to DTC for LAN system. List of Diagnostic Trouble Code (DTC)	Warning Light Illumination Pattern > VDC OFF INDICATOR LIGHT DOES NOT GO OFF
5.CHECK COMBINATION METER. Check the combination meter. Combination Meter System > OPERATION	Is combination meter OK-	Replace the VDCCM&H/U. VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)	Replace the combination meter. Combination Meter > REMOVAL

Inspection

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DETECTING CONDITION:• Defective combination meter• Defective engine• Defective CAN communicationTROUBLE SYMPTOM:When starting the engine, the VDC warning light & VDC indicator light ...

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