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

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

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.

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Audio unit

A1:

A1-A3: