Test F: The Subwoofer Is Inoperative/Does Not Operate Correctly

PINPOINT TEST F: THE SUBWOOFER IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

F1-F3:

F3-F5:

F5-F6:

Normal Operation
The subwoofer audio signals are sent from the audio unit to the subwoofer 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 173 (DG/VT). The subwoofers are connected to the audio amplifier through individual audio circuits.

Possible Causes
- Fuse
- Circuit 167 (BN/OG) open or short to ground
- Circuit 168 (RD/BK) open or short to ground
- Circuit 173 (DG/VT) open or short to ground
- Circuit 694 (BK/LG) open
- Circuit 720 (RD/YE) open
- Subwoofer amplifier
- Audio unit