Diagnostic Test

1) MEASURE THE VOLTAGE OF THE BCM POWER CIRCUIT

Fig 1: Measuring Voltage Of BCM Power Circuit
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Disconnect the BCM harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the voltage of the Fused B(+) circuit (cavity 75) at the BCM C4 harness connector.

Is the voltage above 10 volts?

Yes
1. Go to step 2).
No
1. Repair the Fused B(+) circuit for an open.
2. Perform BODY VERIFICATION TEST .
2) MEASURE THE VOLTAGE OF THE BCM POWER CIRCUIT

Fig 2: Measuring Voltage Of BCM Power Circuit
Courtesy of DAIMLERCHRYSLER CORP.

Measure the voltage of the Fused B(+) circuit (cavity 44) at the BCM C4 harness connector.

Is the voltage above 10 volts?

Yes
1. Go to step 3).
No
1. Repair the Fused B(+) circuit for an open.
2. Perform BODY VERIFICATION TEST .
3) MEASURE THE VOLTAGE OF THE BCM POWER CIRCUIT

Fig 3: Measuring Voltage Of BCM Power Circuit
Courtesy of DAIMLERCHRYSLER CORP.

Measure the voltage of the Fused B(+) circuit (cavity 4) at the BCM C4 harness connector.

Is the voltage above 10 volts?

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