B140F

B140F-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN







Theory of Operation

The (X206) Right Rear Speaker (+) circuit and the (X296) Right Rear Speaker (-) circuit are outputs of the Radio. The Radio controls and monitors these circuits for a concern.

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:
With the Radio on.

- Set Condition:
The Radio detects an open condition on the speaker output circuit.





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 Radio DTCs.

2. Using the scan tool, record and erase the Radio DTCs.
3. Turn the Radio on.
4. Adjust the speakers to the rear and center.
5. Using the scan tool, read the active Radio DTCs.

Does the scan tool read: B140F-REAR RIGHT 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. CHECK THE RIGHT REAR SPEAKER




1. Turn the ignition off.
2. Disconnect the Right Rear Speaker.
3. Measure the resistance of the speaker between the two terminals.

NOTE: The graphic shows the connector for reference only. Measure between the speaker terminals.

Is the resistance above 5.0 Ohms?

Yes

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

No

- Go To 3

3. CHECK THE (X206) RIGHT REAR SPEAKER (+) CIRCUIT FOR AN OPEN




1. Disconnect the Radio C1 harness connector.
2. Measure the resistance of the (X206) Right Rear Speaker (+) circuit between the Radio C1 connector and the Right Rear Speaker harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Go To 4

No

- Repair an open in the (X206) Right Rear Speaker (+) circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. CHECK THE (X296) RIGHT REAR SPEAKER (-) CIRCUIT FOR AN OPEN




1. Measure the resistance of the (X296) Right Rear Speaker (-) circuit between the Radio C1 connector, and the Right Rear Speaker harness connector.

Is the resistance below 5.0 Ohms?

Yes

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

No

- Repair an open in the (X296) Right Rear Speaker (-) circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.