B1402

B1402-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH





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

Theory of Operation

The (X201) Left Front Speaker (+) circuit and the (X291) Left Front Speaker (-) circuit are outputs of the Radio. The Radio controls and monitors these circuits for a concern.

- When Monitored:
With the Radio on.

- Set Condition:
The Radio detects a short to battery condition on the speaker output circuit.





1. CHECK FOR AN INTERMITTENT CONDITION

NOTE: This vehicle has a Front I/P Speaker wired in parallel with the Front Door Speaker.

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 front and center.
5. Using the scan tool, read the active Radio DTCs.

Does the scan tool read: B1402-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH?

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 FOR VOLTAGE ON THE (X201) LEFT FRONT SPEAKER (+) CIRCUIT




1. Turn the ignition off.
2. Disconnect the Radio harness connector.
3. Disconnect the Left Front Door Speaker harness connector.
4. Disconnect the Left Front I/P Speaker harness connector.
5. Turn the ignition on.
6. Measure the voltage between ground and the (X201) Left Front Speaker (+) circuit.

Is there any voltage present?

Yes

- Repair the (X201) Left Front Speaker (+) circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK FOR VOLTAGE ON THE (X291) LEFT FRONT SPEAKER (-) CIRCUIT




1. Measure the voltage between ground and the (X291) Left Front Speaker (-) circuit.

Is there any voltage present?

Yes

- Repair the (X291) Left Front Speaker (-) circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

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