Subaru Legacy BN/BS (2015-2019) Service Manual: Vdc warning light and vdc indicator light do not go off

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

DETECTING CONDITION:

• Defective combination meter

• Defective engine

• Defective CAN communication

TROUBLE SYMPTOM:

When starting the engine, the VDC warning light & VDC indicator light remains lit.

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 WARNING LIGHT AND VDC INDICATOR LIGHT DO NOT GO OFF
2.CHECK VDCCM. Display the current data of VDCCM using Subaru Select Monitor.	Is the «VDC Warning Lamp» ON-	Warning Light Illumination Pattern > VDC WARNING LIGHT AND VDC INDICATOR LIGHT DO NOT GO OFF	Warning Light Illumination Pattern > VDC WARNING LIGHT AND VDC INDICATOR LIGHT DO NOT GO OFF
3.CHECK WARNING LIGHT. 1) Save the freeze frame data. 2) Perform the Clear Memory Mode. Clear Memory Mode	Does the VDC warning light & VDC operation indicator light go off-	Normal Perform the Inspection Mode to check that the light does not turn ON again.	Warning Light Illumination Pattern > VDC WARNING LIGHT AND VDC INDICATOR LIGHT DO NOT GO OFF
4.READ DTC. Read the DTC after driving the vehicle at 40 km/h (25 MPH) or more.	Is DTC displayed-	Perform the diagnosis according to DTC. List of Diagnostic Trouble Code (DTC)	Warning Light Illumination Pattern > VDC WARNING LIGHT AND VDC INDICATOR LIGHT DO NOT GO OFF
5.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 WARNING LIGHT AND VDC INDICATOR LIGHT DO NOT GO OFF
6.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

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 ...

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DETECTING CONDITION:• When VDCCM&H/U was replaced• When fault was detected or electronic parking brake switch was operated under faulty condition• When electronic parking brake switc ...

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