B146F-13

B146F-13-CHANNEL 4 AUDIO SPEAKER OUTPUT - CIRCUIT OPEN





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

Theory of Operation

The (X202) Right Front Door Speaker (+) circuit and the (X292) Right Front Door 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 an open 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. With 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 front and center.
6. With the scan tool, read the active Amplifier DTCs.

Does the scan tool display active: B146F-13-CHANNEL 4 AUDIO SPEAKER OUTPUT - CIRCUIT OPEN?

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 OPERATION OF THE RIGHT FRONT DOOR SPEAKER




1. Turn the ignition off.
2. Disconnect the Right Front Door Speaker harness connector.
3. Turn the ignition on.
4. Turn the Radio on and turn the volume to 25.
5. Adjust the speakers to the front and center.
6. With a voltmeter set to read in A/C voltage, measure the voltage of the Right Front Door Speaker circuits in the Right Front Door Speaker harness connector.

Is the voltage present greater than 1 volt?

Yes

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

No

- Go To 3

3. CHECK THE (X202) RIGHT FRONT DOOR SPEAKER (+) CIRCUIT FOR AN OPEN




1. Turn the ignition off.
2. Disconnect the Amplifier C2 harness connector.
3. Measure the resistance of the (X202) Right Front Door Speaker (+) circuit between the Amplifier C2 harness connector and the Right Front Door Speaker harness connector.

Is the resistance below 2.5 Ohms?

Yes

- Go To 4

No

- Repair the (X202) Right Front Door Speaker (+) circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. CHECK THE (X292) RIGHT FRONT DOOR SPEAKER (-) CIRCUIT FOR AN OPEN




1. Measure the resistance of the (X292) Right Front Door Speaker (-) circuit between the Amplifier C2 harness connector and the Right Front Door Speaker harness connector.

Is the resistance below 2.5 Ohms?

Yes

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

No

- Repair the (X292) Right Front Door Speaker (-) circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.