Test F: The Auxiliary Audio Control Is Inoperative/Does Not Operate Correctly

PINPOINT TEST F: THE AUXILIARY AUDIO CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

F1:

F2-F3:

F4-F5:

Normal Operation
The auxiliary audio control can be used to control various functions of the audio unit. When a switch is pressed, the circuit is completed through a specific-value resistor. The signal is then sent to the audio unit, which correlates the resistance value with the specific switch function.

Possible Causes
- Audio unit
- Auxiliary audio control
- Circuit 595 (LB/RD) open or short to ground
- Circuit 57 (BK) open
- Clockspring