Signal Circuit Inspection

■ Open or Short Check 

1. IG "OFF".
2. Disconnect the AVH switch and HECU connector.
3. IG "ON".
4. Measure voltage between AVH switch signal terminal of the HECU harness connector and chassis ground.

   Specification:  Approx. 0V

5. Is the measured value within specifications?

   YES 

   • Go to "COMPONENT INSPECTION " Procedure.

   NO 

   • Repair short to power in AVH switch signal circuit between AVH switch and HECU.