Test O: Navigation System Does Not Operate Correctly - No Reverse Tracking

PINPOINT TEST O: NAVIGATION SYSTEM DOES NOT OPERATE CORRECTLY - NO REVERSE TRACKING

O1-O2:

O2-O3:

Normal Operation
The audio unit receives a voltage signal from the smart junction box (SJB) to indicate the vehicle is in reverse on circuit 140 (BK/PK).

Possible Causes
- Circuit 140 (BK/PK) open
- Audio unit