B1403

B1403-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN





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 an open 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: B1403-FRONT LEFT 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 LEFT FRONT SPEAKER




1. Turn the ignition off.
2. Disconnect the Left Front 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 Left Front Speaker.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK THE LEFT FRONT I/P SPEAKER




1. Turn the ignition off.
2. Disconnect the Left Front I/P 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 Left Front I/P Speaker.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. CHECK THE (X201) LEFT FRONT SPEAKER (+) CIRCUIT FOR AN OPEN




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

Is the resistance below 5.0 Ohms?

Yes

- Go To 5

No

- Repair an open in the (X201) Left Front Speaker (+) circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

5. CHECK THE (X291) LEFT FRONT SPEAKER (-) CIRCUIT FOR AN OPEN




1. Measure the resistance of the (X291) Left Front Speaker (-) circuit between the Radio connector, and the Left Front Speaker harness connector and the Left Front I/P Speaker harness.

Is the resistance below 5.0 Ohms?

Yes

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

No

- Repair an open in the (X291) Left Front Speaker (-) circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.