Diagnostic Test
- CHECK FOR AN INTERMITTENT CONDITION NOTE:
This vehicle has a Front Tweeter wired in parallel with the Front Speaker.
- Turn the ignition on and open one of the front doors.
- Using the scan tool, record and erase the Radio DTCs.
- Turn the Radio on.
- Adjust the speakers to the front and center.
- 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. Refer to STANDARD PROCEDURE .
- LEFT FRONT SPEAKERS
- Make sure one of the front doors is still open.
- Using the scan tool, erase the DTCs.
- Turn the ignition off.
- Disconnect the Left Front Speaker harness connector from the Left Front Speaker.
- Disconnect the Left Front Tweeter harness connector from the Left Front Tweeter.
- Turn the ignition on.
- Turn the radio on.
- 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
- LEFT FRONT SPEAKER
- Make sure one of the front doors is still open.
- Using the scan tool, erase the DTCs.
- Turn the ignition off.
- Re-connect the Left Front Speaker harness connector to the Left Front Speaker.
- Turn the ignition on.
- Turn the radio on.
- 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 in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Replace the Left Front Tweeter in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- CHECK THE (X201) LEFT FRONT SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND
- Turn the ignition off.
- Disconnect the Radio C2 harness connector.
- 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. Refer to STANDARD PROCEDURE .
No
- Go To 5
- CHECK THE (X291) LEFT FRONT SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND
- 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 (-) for a short to ground.
- Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Replace the Radio in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- Measure the resistance between ground and the (X291) Left Rear Speaker (-) circuit.