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

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

A1:

A1-A3:

Normal Operation
The audio unit receives voltage through circuit 729 (RD/WH) at all times, through circuit 137 (YE/BK) with the key in RUN or ACC, and through circuit 1000 (RD/BK) with the key in START. The audio unit is grounded through circuits 694 (BK/LG) and 57 (BK). All of the features of the audio unit are available when the key is in the RUN or ACC positions.

Possible Causes
- Fuse
- Circuit 57 (BK) open
- Circuit 137 (YE/BK) open
- Circuit 694 (BK/LG) open
- Circuit 729 (RD/WH) open
- Audio unit