Test D: The Audio System Illumination Is Inoperative

PINPOINT TEST D: THE AUDIO SYSTEM ILLUMINATION IS INOPERATIVE

D1-D2:

Normal Operation
Variable voltage is supplied to the audio system illumination on circuit 19 (LB/RD). The audio system illumination is grounded by circuit 57 (BK).

Possible Causes
- Circuit 19 (LB/RD) open
- Circuit 57 (BK) open
- Audio unit