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 SBP24 (VT/RD) at all times, and through circuit CBP06 (WH/BU) with the key in RUN or ACC. Ground is provided to the audio unit through circuits GD103 (BK/BU) (illumination only) and GD103 (BK/BU). With the key in RUN or ACC and the audio unit on, all functions are operational.

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

A1-A4:

A4 Continued: