Test A: The Audio Unit Is Inoperative/Does Not Operate Correctly

PINPOINT TEST A: THE AUDIO UNIT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

A1-A4:

A4-A6:

A7:

Normal Operation
The audio unit is operational when the key is in the RUN or ACC position. The audio unit retains information while the key is in the OFF position by receiving voltage on circuit 797 (LG/VT), and while the key is in the START position by receiving voltage on circuit 1000 (RD/BK). The speakers are wired directly to the audio unit.

Possible Causes
- Fuse(s)
- Circuit 194 (PK) open
- Circuit 797 (LG/VT) open
- Circuit 1000 (RD/BK) short to voltage
- Circuit 694 (BK/LG) open
- Audio unit