VDC Traction Mode

DETECTING CONDITION:

Defective combination meter
Defective CAN communication
Defective VDC OFF switch

TROUBLE SYMPTOM:

Even when the VDC OFF switch is operated, the VDC traction mode indicator light does not illuminate, or the illumination color does not change. (The VDC mode does not change)

NOTE:

When the VDC OFF switch is pressed (2 seconds or less), the VDC traction mode indicator light illuminates in green and the VDC OFF indicator light illuminates in yellow. (Traction mode)
When the VDC OFF switch is held down (2 seconds or more), the VDC OFF indicator light illuminates in yellow. (VDC OFF mode)
When pressing the VDC OFF switch for 30 seconds or more, the VDC OFF indicator light goes off and cannot operate any more. When turning the ignition switch from OFF to ON, the OFF operation enabled status is restored.

WIRING DIAGRAM:

Models without EyeSight
Vehicle dynamics control system <Ref. to WITHOUT EYESIGHT , WIRING DIAGRAM, Vehicle Dynamics Control System.>

Fig 1: Vehicle Dynamics Control System Wiring Diagram (Models Without Eyesight)
Courtesy of SUBARU OF AMERICA, INC.
Models with EyeSight
Vehicle dynamics control system <Ref. to WITH EYESIGHT , WIRING DIAGRAM, Vehicle Dynamics Control System.>

Fig 2: Vehicle Dynamics Control System Wiring Diagram (Models Without Eyesight)
Courtesy of SUBARU OF AMERICA, INC.

Step	Check	Yes	No
1 READ DTC. Read the DTC. <Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) .>	Is DTC displayed?	Perform the diagnosis according to DTC. <Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .>	Go to step 2 .
2 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the connector from the VDCCM & H/U and VDC OFF switch. Measure the resistance of harness between the VDCCM & H/U and VDC OFF switch connectors. Connector & terminal Models without EyeSight (B310) No. 21 - (i234) No. 5: Models with EyeSight (B310) No. 2 - (i234) No. 5:	Is the resistance less than 1 Ω?	Go to step 3 .	Repair the harness between the VDCCM & H/U and VDC OFF switch connectors.
3 CHECK GROUND SHORT OF HARNESS. Measure the resistance between VDCCM & H/U connector and chassis ground. Connector & terminal Models without EyeSight (B310) No. 21 - Chassis ground: Models with EyeSight (B310) No. 2 - Chassis ground:	Is the resistance 1 MΩ or more?	Go to step 4 .	Repair the harness between the VDCCM & H/U and VDC OFF switch connectors.
4 CHECK HARNESS. Measure the resistance of harness between VDC OFF switch connector and chassis ground. Connector & terminal (i234) No. 6 - Chassis ground:	Is the resistance less than 10 Ω?	Go to step 5 .	Repair the harness between the VDC OFF switch connector and chassis ground.
5 CHECK VDC OFF SWITCH. Check the VDC OFF switch. <Ref. to INSPECTION , VDC OFF Switch.>	Is the check result OK?	Go to step 6 .	Replace the VDC OFF switch. <Ref. to VDC OFF Switch .>
6 CHECK LAN SYSTEM. Perform the diagnosis for LAN system. <Ref. to Basic Diagnostic Procedure .>	Is there any fault in LAN system?	Perform the diagnosis according to DTC for LAN system. <Ref. to List of Diagnostic Trouble Code (DTC) .>	Go to step 7 .
7 CHECK COMBINATION METER. Check the combination meter. <Ref. to INSPECTION , Combination Meter System.>	Is the check result OK?	Replace the VDCCM & H/U. <Ref. to VDC Control Module and Hydraulic Control Unit (VDCCM & H/U) .>	Replace the combination meter. <Ref. to Combination Meter .>