B1401

B1401-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW





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 ground 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: B1401-FRONT LEFT 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 LEFT FRONT 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 Left Front Speaker harness connector from the Left Front Speaker.
5. Disconnect the Left Front I/P Speaker harness connector from the Left Front I/P Speaker.
6. Turn the ignition on.
7. Turn the radio on.
8. Using the scan tool, read the active Radio DTCs.

Does the scan tool read: B1401-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

- Go To 4

No

- Go To 3

3. CHECK THE LEFT FRONT I/P 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. Re-connect the Left Front Speaker harness connector to the Left Front Speaker.
5. Turn the ignition on.
6. Turn the radio on.
7. Using the scan tool, read the active Radio DTCs.

Does the scan tool read: B1401-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW?

Yes

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

No

- Replace the Left Front I/P Speaker.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. CHECK THE (X201) LEFT FRONT SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND




1. Turn the ignition off.
2. Disconnect the Radio harness connector.
3. Measure the resistance between ground and the (X201) Left Front Speaker (+) circuit.

Is the resistance below 5.0 Ohms?

Yes

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

No

- Go To 5

5. CHECK THE (X291) LEFT FRONT SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND




1. Measure the resistance between ground and the (X291) Left Rear Speaker (-) circuit.

Is the resistance below 5.0 Ohms?

Yes

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

No

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