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

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

C1:

C1-C3:

C3-C5:

C5-C7:

Normal Operation
The voice guidance settings are controlled by the audio unit. The audio unit sends the voice guidance audio signal to the digital signal processing (DSP) module through circuits RMN07 (VT) and VMN07 (GY). The voice guidance volume can be adjusted or turned off depending on user preference.

Possible Causes
- circuit RMN07 (VT) open, short to ground, or short to voltage
- circuit VMN07 (GY) open, short to ground, or short to voltage
- audio unit
- DSP module