Test I: The Subwoofer Is Inoperative - Navigation

PINPOINT TEST I: THE SUBWOOFER IS INOPERATIVE - NAVIGATION

I1:

I1-I3:

I3-I4:

I5-I7:

I7-I8:

Normal Operation
The subwoofer audio signals are sent from the audio unit to the audio amplifier through circuits 167 (BN/OG) and 168 (RD/BK). The audio unit also sends a subwoofer enable signal to the audio amplifier through circuit 174 (GY/BK). The subwoofers are connected to the audio amplifier through individual audio circuits.

Possible Causes
- Circuit 167 (BN/OG) open, short to ground or voltage
- Circuit 168 (RD/BK) open, short to ground or voltage
- Circuit 174 (GY/BK) open or short to ground
- Circuit 287 (BK/WH) open, short to ground or voltage
- Circuit 288 (VT) open, short to ground or voltage
- Circuit 822 (BK/LG) open, short to ground or voltage
- Circuit 823 (LG) open, short to ground or voltage
- Subwoofer
- Audio amplifier
- Audio unit