Test A: No Communication With The Audio Unit

PINPOINT TEST A: NO COMMUNICATION WITH THE AUDIO UNIT

A1:

A1-A2:

Normal Operation
Voltage is supplied to the audio unit on circuits 797 (LG/VT) and 687 (GY/YE). The audio unit is grounded through circuit 1204 (BK/OG).

Possible Causes
- Fuse
- Circuit 797 (LG/VT) open
- Circuit 687 (GY/YE) open
- Circuit 1204 (BK/OG) open
- Audio unit