DTC Descriptors

DTC B1025 01: Audio (+ ) Output Left Front Circuit Short to Battery

DTC B1025 02: Audio (+) Output Left Front Circuit Short to Ground

DTC B1025 04: Audio (+) Output Left Front Circuit Open

DTC B1030 01: Audio (-) Output Left Front Circuit Short to Battery

DTC B1030 02: Audio (-) Output Left Front Circuit Short to Ground

DTC B1030 04: Audio (-) Output Left Front Circuit Open

DTC B1035 01: Audio (+) Output Right Front Circuit Short to Battery

DTC B1035 02: Audio (+) Output Right Front Circuit Short to Ground

DTC B1035 04: Audio (+) Output Right Front Circuit Open

DTC B1040 01: Audio (-) Output Right Front Circuit Short to Battery

DTC B1040 02: Audio (-) Output Right Front Circuit Short to Ground

DTC B1040 04: Audio (-) Output Right Front Circuit Open

DTC B1045 01: Audio (+) Output Left Rear Circuit Short to Battery

DTC B1045 02: Audio (+) Output Left Rear Circuit Short to Ground

DTC B1045 04: Audio (+) Output Left Rear Circuit Open

DTC B1050 01: Audio (-) Output Left Rear Circuit Short to Battery

DTC B1050 02: Audio (-) Output Left Rear Circuit Short to Ground

DTC B1050 04: Audio (-) Output Left Rear Circuit Open

DTC B1055 01: Audio (+) Output Right Rear Circuit Short to Battery

DTC B1055 02: Audio (+) Output Right Rear Circuit Short to Ground

DTC B1055 04: Audio (+) Output Right Rear Circuit Open

DTC B1060 01: Audio (-) Output Right Rear Circuit Short to Battery

DTC B1060 02: Audio (-) Output Right Rear Circuit Short to Ground

DTC B1060 04: Audio (-) Output Right Rear Circuit Open

Diagnostic Fault Information

Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Left Front Speaker Output (+ )	B1025 02	B1025 04	B1025 01	--
Left Front Speaker Output (-)	B1030 02	B1030 04	B1030 01	--
Right Front Speaker Output (+)	B1035 02	B1035 04	B1035 01	--
Right Front Speaker Output (-)	B1040 02	B1040 04	B1040 01	--
Left Rear Speaker Output (+)	B1045 02	B1045 04	B1045 01	--
Left Rear Speaker Output (-)	B1050 02	B1050 04	B1050 01	--
Right Rear Speaker Output (+)	B1055 02	B1055 04	B1055 01	--
Right Rear Speaker Output (-)	B1060 02	B1060 04	B1060 01	--

Circuit/System Description

The radio supplies 4 audio signals to 4 individual speakers or an amplifier if equipped.

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 output signal circuits between the radio and speakers or radio and amplifier (if equipped).

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 no longer present.

Reference Information

Schematic Reference

Radio/Navigation System Schematics

Connector End View Reference

Entertainment/Communication Connector End Views

Description and Operation Reference

Radio/Audio System Description and Operation

Electrical Information Reference

Scan Tool Reference

Scan Tool Data List

Circuit/System Verification

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

Circuit/System Testing

Important: Verify the DTC is current before performing this diagnostic

W/O Amplifier

1. Ignition ON, operate the radio. Center the fade and balance adjustments on the radio.
2. Ignition OFF, disconnect the suspect speaker connector.
3. Ignition ON, test for 5-6 volts between the suspect (+) audio output signal circuit and ground.

⇒	If less than 5 volts, test the suspect (+) audio output signal circuit for short to ground or an open/high resistance. If the circuits test normal replace the radio.

⇒	If greater than 6 volts, test the suspect (+) audio output signal circuit for short to voltage. If the circuits test normal replace the radio.

4. Ignition ON, test for 5-6 volts between the suspect (-) audio output signal circuit and ground.

⇒	If less than 5 volts, test the suspect (-) audio output signal circuit for short to ground or an open/high resistance. If the circuits test normal replace the radio.

⇒	If greater than 6 volts, test the suspect (-) audio output signal circuit for short to voltage. If the circuits test normal replace the radio.

With Amplifier

1. Ignition ON, operate the radio. Center the fade and balance adjustments on the radio.
2. Ignition OFF, Disconnect the C3 harness connector at the amplifier.
3. Ignition ON, test for 5-6 volts between the suspect (+) audio output signal circuit and ground.

⇒	If less than 5 volts, test the suspect (+) audio output signal circuit for short to ground or an open/high resistance. If the circuits test normal replace the radio.

⇒	If greater than 6 volts, test the suspect (+) audio output signal circuit for short to voltage. If the circuits test normal replace the radio.

4. Ignition ON, test for 5-6 volts between the suspect (-) audio output signal circuit and ground.

⇒	If less than 5 volts, test the suspect (-) audio output signal circuit for short to ground or an open/high resistance. If the circuits test normal replace the radio.

⇒	If greater than 6 volts, test the suspect (-) audio output signal circuit for short to voltage. If the circuits test normal replace the radio.

5. If the voltage is within the specified range on all audio output signal circuits replace the amplifier.

If all circuits test normal replace the amplifier.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.