Test D: Navigation System Does Not Operate Correctly - The Voice Guidance Is Inoperative/Does Not Operate Correctly

PINPOINT TEST D: NAVIGATION SYSTEM DOES NOT OPERATE CORRECTLY - THE VOICE GUIDANCE IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

D1-D2:

D3-D4:

D5:

D5-D7:

D7-D8:

D9:

Normal Operation
The navigation system module provides voice-assisted route guidance to the audio unit through the audio circuits 1-GK18 (WH/BU) and 2-GK18 (GY/VT). The volume of the voice guidance is controlled by the audio unit.

Possible Causes
- circuit 1-GK18 (WH/BU) open, short to ground or short to voltage
- circuit 2-GK18 (GY/VT) open, short to ground or short to voltage
- navigation system module
- audio unit