DTC C1923: Auto Vehicle Hold Switch Circuit

DTC detecting condition: 

A fault is detected if the AVH switch is pressed and held for a long period of time.

Trouble symptom: 

AVH function cannot be set.

Failure detection pattern: 

• "Primary" (high-priority diagnosis)

Warning light/indicator light: 

The combination of DTC and warning light display may differ from the list depending on vehicle conditions and driving conditions at the time of failure detection.

• ABS warning light -
• VDC warning light & VDC operation indicator light -
• Electronic parking brake warning light (red) -
• Brake warning light (EBD warning light) (red) -

1. CHECK DTC  .

   Read the DTC of [Brake Control] using the Subaru Select Monitor. Ref. to BRAKE CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

   Is DTC C1923 a current code?

   Yes:  Perform the diagnosis for the cockpit control module. Ref. to COCKPIT CONTROL (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE .

   No:  Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

   NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.