B1035

DTC B1025, B1035, B1045, or B1055

DTC Descriptor

DTC B1025 01
- Audio Output 1 Left Front Circuit Short to Battery

DTC B1025 02
- Audio Output 1 Left Front Circuit Short to Ground

DTC B1025 04
- Audio Output 1 Left Front Circuit Open

DTC B1035 01
- Audio Output 2 Right Front Circuit Short to Battery

DTC B1035 02
- Audio Output 2 Right Front Circuit Short to Ground

DTC B1035 04
- Audio Output 2 Right Front Circuit Open

DTC B1045 01
- Audio Output 3 Left Rear Circuit Short to Battery

DTC B1045 02
- Audio Output 3 Left Rear Circuit Short to Ground

DTC B1045 04
- Audio Output 3 Left Rear Circuit Open

DTC B1055 01
- Audio Output 4 Right Rear Circuit Short to Battery

DTC B1055 02
- Audio Output 4 Right Rear Circuit Short to Ground

DTC B1055 04
- Audio Output 4 Right Rear Circuit Open

Diagnostic Fault Information

Important: Always perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview






Circuit/System Description

The up-level radio (UQA) supplies 4 channels of audio to an amplifier. The amplifier supplies 4 input signal channels to 6 speakers.

Conditions for Running the DTC

The radio is ON.

Conditions for Setting the DTC

The radio sets a current status for this DTC when a short to ground, short to voltage or an open is detected on any of the 4 speaker channel outputs from the radio.

Action Taken When the DTC Sets

No sound is present from one or more of the speakers.

Conditions for Clearing the DTC

The fault condition is not present for .25 seconds.

Diagnostic Aids

Speakers located in the front A-pillar are connected to the same channel as the speaker in the door. A DTC will only set after the amplifier only on up-level radios.

Circuit/System Verification

All speakers should function properly and make sure the DTC does not reset.

Circuit/System Testing

Test the suspect speaker channel (after the amplifier) for a short to ground, short to voltage or an open.

If a short to ground or voltage can not be found, replace the amplifier.

Repair Instructions

Important: Always perform the Diagnostic Repair Verification Diagnostic Repair Verification Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

* Speaker Replacement Reference
* Control Module References for Radio replacement, setup, and programming.