2010 Cadillac CTS Sedan AWD V6-3.6L Page 308
DTC B1075 01
- Audio Output 6 Circuit Short to Battery (Subwoofer)
DTC B1075 02
- Audio Output 6 Circuit Short to Ground (Subwoofer)
DTC B1085 01
- Audio Output 7 Circuit Short to Battery (LR Shelf)
DTC B1085 02
- Audio Output 7 Circuit Short to Ground (LR Shelf)
DTC B1085 04
- Audio Output 7 Circuit Open (LR Shelf)
DTC B1095 01
- Audio Output 8 Circuit Short to Battery (RR Shelf)
DTC B1095 02
- Audio Output 8 Circuit Short to Ground (RR Shelf)
DTC B1095 04
- Audio Output 8 Circuit Open (RR Shelf)
DTC B1105 01
- Audio Output 9 Circuit Short to Battery (LF I/P Tweeter)
DTC B1105 02
- Audio Output 9 Circuit Short to Ground (LF I/P Tweeter)
DTC B1105 04
- Audio Output 9 Circuit Open (LF I/P Tweeter)
DTC B1115 01
- Audio Output 10 Circuit Short to Battery (RF I/P Tweeter)
DTC B1115 02
- Audio Output 10 Circuit Short to Ground (RF I/P Tweeter)
DTC B1115 04
- Audio Output 10 Circuit Open (RF I/P Tweeter)
Diagnostic Fault Information
Circuit/System Description
Each of the audio output channel circuits (+) and (-) have a varying AC mV signal that is produced by the radio and sent to the amplifier. The
amplifier then processes these signals and passes the audio along with a DC bias voltage to the appropriate speakers. The audio being played on the
system is produced by the varying AC voltage. The AC voltage is what causes the speaker cone to move and produce sound. This voltage will vary
depending on what type of audio is being listened to, talk or music, and type of music, as well as the volume setting of the system. When using a
DMM, each of the audio amplifier output channel circuits will measure approximately 6.5V DC.
