Test D: The Subwoofer Is Inoperative
PINPOINT TEST D: THE SUBWOOFER IS INOPERATIVED1:
D1-D3:
D3-D5:
D6-D9:
D9-D11:
D11 Continued:
Normal Operation
The subwoofer amplifier receives voltage through circuit 30-MD19 (RD), and ground through circuit 91-MD19 (BK/BU). Audio signals are sent to the subwoofer amplifier from the audio unit through circuits 1-MD23 (WH/BK) and 2-MD23 (GY/BK). The audio unit also sends a subwoofer enable signal to the subwoofer amplifier through circuit 8-MD19 (WH/RD).
Possible Causes
- Fuse
- Circuit 1-MD23 (WH/BK) open, short to ground or voltage
- Circuit 2-MD23 (GY/BK) open, short to ground or voltage
- Circuit 8-MD19 (WH/RD) open or short to ground
- Circuit 30-MD19 (RD) open
- Circuit 91-MD19 (BK/BU) open
- Subwoofer speaker circuitry
- Subwoofer speaker
- Subwoofer amplifier
- Audio unit.