Diagnostic Test

1) 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: B1407-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes
1. Go To 2).
No
1. 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. Refer to SYSTEM WIRING DIAGRAMS .
2. Perform the BODY VERIFICATION TEST - VER 1 .
2) (X202) (X292) SPEAKER OUTPUT CIRCUITS

Fig 1: (X202) (X292) SPEAKER OUTPUT CIRCUITS
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Disconnect the Radio C1 harness connector.

Disconnect the Front Right Audio Speaker connector.

Measure the resistance of each speaker (X202)(+) and (X292)(-) circuit between the Radio and the Speaker.

Is the resistance below 5.0 ohms for each circuit?

Yes
1. Go To 3).
No
1. Repair the applicable Output Speaker circuit for an open condition.
2. Perform the BODY VERIFICATION TEST - VER 1 .
3) SPEAKER

Fig 2: Right Front Door Speaker Connector
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Disconnect the Front Right Audio Speaker.

Turn the ignition on.

With the scan tool, clear all Audio DTCs.

With the scan tool, read the DTC information.

Does the scan tool read: B1407-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN?

Yes
- Replace the speaker in accordance with the service information.
- Perform the BODY VERIFICATION TEST - VER 1 .
No

Test is complete.