Test M: The Audio Input Jack Is Inoperative/Does Not Operate Correctly

PINPOINT TEST M: THE AUDIO INPUT JACK IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

M1-M2:

M2-M3:

Normal Operation
Audio signals are sent from the audio input jack to the audio unit. There are no external power or ground circuits to the audio input jack.

Possible Causes
- Circuit 1594 (WH) open, short to ground or voltage
- Circuit 1595 (RD) open, short to ground or voltage
- Circuit 1596 (PK) open, short to ground or voltage
- Circuit 1597 (OG) open, short to ground or voltage
- Audio input jack
- Audio unit