Test C: Poor Quality/Distorted/No Sound From One Or More Speakers (Not All Speakers) - THX(R) Audio System

PINPOINT TEST C: POOR QUALITY/DISTORTED/NO SOUND FROM ONE OR MORE SPEAKERS (NOT ALL SPEAKERS) - THX(R) AUDIO SYSTEM

C1-C4:

C4-C6:

C6-C7:

C7-C8:

C8-C10:

Normal Operation
The audio unit directs the audio signals to the THX(R) amplifier, which processes the audio signals and sends them to the speakers. Each speaker has a signal and return circuit.

DTC B1158 - sets when an open is detected in the RH subwoofer circuit.

DTC B2913 - sets when an open is detected in the LH subwoofer circuit.

DTC B2925 - sets when a short to ground or short to voltage is detected in the LH subwoofer circuit.

DTC B292A - sets when a short to ground or short to voltage is detected in the RH subwoofer circuit.

DTC B2965 - sets when an open, short to ground or short to voltage is detected on any of the speaker circuits.

Possible Causes
- Fuse
- Circuit GD148 (BK/YE) open
- Circuit RME01 (GY) open, short to ground or voltage
- Circuit RME02 (YE) open, short to ground or voltage
- Circuit RME06 (GY/YE) open, short to ground or voltage
- Circuit RME07 (WH/BN) open, short to ground or voltage
- Circuit RME08 (GY/OG) open, short to ground or voltage
- Circuit RME09 (BN/YE) open, short to ground or voltage
- Circuit RME10 (WH/OG) open, short to ground or voltage
- Circuit RME11 (YE/OG) open, short to ground or voltage
- Circuit RME12 (BN/BU) open, short to ground or voltage
- Circuit RME17 (GY) open, short to ground or voltage
- Circuit RME18 (YE) open, short to ground or voltage
- Circuit RME28 (BN/GN) open, short to ground or voltage
- Circuit RME29 (BU/WH) open, short to ground or voltage
- Circuit RME30 (VT/BN) open, short to ground or voltage
- Circuit SBB20 (GN/RD) open
- Circuit SBB21 (GY/RD) open
- Circuit VME01 (GN/VT) open, short to ground or voltage
- Circuit VME02 (VT) open, short to ground or voltage
- Circuit VME06 (GN) open, short to ground or voltage
- Circuit VME07 (WH) open, short to ground or voltage
- Circuit VME08 (GN/OG) open, short to ground or voltage
- Circuit VME09 (BN/GN) open, short to ground or voltage
- Circuit VME10 (WH/VT) open, short to ground or voltage
- Circuit VME11 (VT/OG) open, short to ground or voltage
- Circuit VME12 (BN/WH) open, short to ground or voltage
- Circuit VME17 (GN) open, short to ground or voltage
- Circuit VME18 (VT) open, short to ground or voltage
- Circuit VME28 (BN/VT) open, short to ground or voltage
- Circuit VME29 (GN/WH) open, short to ground or voltage
- Circuit VME30 (GN/BN) open, short to ground or voltage
- Speaker
- Subwoofer speaker
- THX(R) amplifier
- Audio unit