Test B

PINPOINT TEST B: NO COMMUNICATION WITH THE NAVIGATION SYSTEM MODULE

Test B1-B2:

Test B3:

Normal Operation
Battery voltage is supplied to the navigation system module through circuit 30-GK8 (RD/BK). The driver door module (DDM) supplies voltage to the navigation system module through circuit 10-GK8 (GY/BK) in the ON/ACC position. Circuit 31-GK8 (BK/RD) provides the navigation system module ground.

Possible Causes
- circuit 30-GK8 (RD/BK) open or shorted to ground
- circuit 10-GK8 (GY/BK) open or shorted to ground
- circuit 31-GK8 (BK/RD) open
- navigation system module