B147A

B147A-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT LOW





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the ignition on.

- Set Condition:
The amplifier detects a shorted to ground condition on the speaker output circuit.





1. CHECK FOR AN INTERMITTENT CONDITION

NOTE: This vehicle has Rear Tweeter Speakers wired in parallel with the Rear Speakers.

1. Turn the ignition on and open one of the front doors.

NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs.

2. Using the scan tool, record and erase the Amplifier DTCs.
3. Cycle the ignition switch from on to off, wait five seconds and then back to on.
4. Turn the Radio on and set the volume to 20.
5. Adjust the speakers to the rear and center.
6. Using the scan tool, read the active Amplifier DTCs.

Does the scan tool display active: B147A-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. RIGHT REAR SPEAKERS




1. Make sure one of the front doors is still open.
2. Using the scan tool, erase the DTCs.
3. Turn the ignition off.
4. Disconnect the Right Rear Speaker harness connector at the Right Rear Speaker.
5. Disconnect the Right Rear Speaker harness connector at the Right Rear Tweeter.
6. Turn the ignition on.
7. Turn the radio on and set the volume to 25.
8. Using the scan tool, read the active Amplifier DTCs.

Does the scan tool display active: B147A-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

- Go To 4

No

- Go To 3

3. RIGHT REAR SPEAKER




1. Using the scan tool, erase the DTCs.
2. Turn the ignition off.
3. Re-connect the Right Rear Speaker harness connector to the Right Rear Speaker.
4. Turn the ignition on.
5. Turn the radio on and set the volume to 25.
6. Using the scan tool, read the active Amplifier DTCs.

Does the scan tool display active: B1475-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

- Replace the Right Rear Speaker.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Right Rear Tweeter.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. CHECK THE (X206) RIGHT REAR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND




1. Turn the ignition off.
2. Disconnect the Amplifier C2 harness connector.
3. Measure the resistance between ground and the (X206) Right Rear Speaker (+) circuit.

Is the resistance below 10K Ohms?

Yes

- Repair the (X206) Right Rear Speaker (+) circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 5

5. CHECK THE (X296) RIGHT REAR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND




1. Measure the resistance between ground and the (X296) Right Rear Speaker (-) circuit.

Is the resistance below 10K Ohms?

Yes

- Repair the (X296) Right Rear Speaker (-) for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Amplifier.
- Perform the BODY VERIFICATION TEST. Body Verification Test.