Diagnostic Test

1) FUSED B(+) CIRCUIT

Fig 1: Checking Fused B (+) Circuit
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Disconnect the BCM C4 harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the voltage of the Fused B(+) circuit at the BCM C4 harness connector.

Is the voltage above 10.0 volts?

Yes
1. Replace the Body Control Module. (Refer to ELECTRICAL/ELECTRONIC CONTROL MODULES/BODY CONTROL/CENTRAL TIMER MODULE - REMOVAL) .
2. Perform REAR SPOILER VERIFICATION TEST .
No
1. Repair the Fused B(+) circuit for an open.
2. Perform REAR SPOILER VERIFICATION TEST .