Diagnostic Test
- INTERMITTENT CONDITION
- Turn the ignition on.
- With the Scan Tool, clear all Audio DTC's.
- Turn the Radio on.
- With the Scan Tool, read the DTC information.
Does the Scan Tool read: B1403-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN?
Yes
- Go to step 2
No
- The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
- Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
- (X55) (X53) SPEAKER OUTPUT CIRCUITS.
- Turn the ignition off.
- Disconnect the Radio C1 harness connector.
- Disconnect the Front Left Audio Speaker connector.
- Measure the resistance of each speaker (X53) (+) and (X55) (-) circuit between the Radio and the Speaker.
Is the resistance below 5.0 ohms for each circuit?
Yes
- Go to step 3
No
- Repair the applicable Output Speaker circuit for an open condition.
- Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
- SPEAKER
- Turn the ignition off.
- Disconnect the Front Left Audio Speaker.
- Turn the ignition on.
- Turn the Radio on.
- With the Scan Tool, clear all Audio DTC's.
- With the Scan Tool, read the DTC information.
Does the Scan Tool read: B1403-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN?
Yes
- Replace the Speaker in accordance with the service information.
- Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
No
- Test Complete.