Test J

PINPOINT TEST J: NAVIGATION SYSTEM DOES NOT OPERATE CORRECTLY - THE AUDIO UNIT IS INOPERATIVE

Test J1:

Test J2-J4:

Test J4-J5:

Test J6-J7:

Normal Operation
The navigation system module communicates to the audio unit through circuits 5-GK8 (BU/YE) and 4-GK8 (GY/BK) using the controller area network (CAN) protocol. Battery voltage is supplied to the audio unit through circuit 29-MD15 (OG/BK). Circuit 10-MD15 (GY/OG) provides voltage to the audio unit with the key in the ON or ACC position. The audio unit ground is supplied through circuits 31-MD15B (BK/GN) and 31-MD15A (BK/GN).

Possible Causes
- circuit 4-GK8 (GY/BK) open or shorted
- circuit 5-GK8 (BU/YE) open or shorted
- circuit 29-MD15 (OG/BK) open or shorted to ground
- circuit 10-MD15 (GY/OG) open or shorted to ground
- circuit 31-MD15A (BK/GN) open
- circuit 31-MD15B (BK/GN) open
- navigation system module
- audio unit