B1474-11

B1474-11-CHANNEL 5 AUDIO SPEAKER OUTPUT - CIRCUIT SHORT TO GROUND





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

Theory of Operation

The (X205) Left Rear Speaker (+) circuit and the (X295) Left Rear Speaker (-) circuit are outputs of the Amplifier. The Amplifier controls and monitors these circuits for a concern when the ignition is cycled on.

For a detailed description of the Audio System. Audio And Video - Description.

For additional information regarding the operation of the Audio System. Audio And Video - Operation.

- When Monitored:
When the ignition is cycled on.

- Set Condition:
The Amplifier detects a shorted to ground condition on the speaker output circuit when the ignition is cycled on.





1. CHECK FOR AN INTERMITTENT CONDITION
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.
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: B1474-11 CHANNEL 5 AUDIO SPEAKER OUTPUT - CIRCUIT SHORT TO GROUND?

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. CHECK THE LEFT REAR SPEAKER




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 Left Rear Speaker harness connector.
5. Turn the ignition on.
6. Turn the Radio.
7. Using the scan tool, read the active Amplifier DTCs.

Does the scan tool display active: B1474-11-CHANNEL 5 AUDIO SPEAKER OUTPUT - CIRCUIT SHORT TO GROUND?

Yes

- Go To 3

No

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

3. CHECK THE (X205) LEFT 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 (X205) Left Rear Speaker (+) circuit.

Is the resistance below 10K Ohms?

Yes

- Repair the (X205) Left Rear Speaker (+) circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. CHECK THE (X295) LEFT REAR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND




1. Measure the resistance between ground and the (X295) Left Rear Speaker (-) circuit.

Is the resistance below 10K Ohms?

Yes

- Repair the (X295) Left Rear Speaker (-) for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

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