Body Control Module Internal Failure

BODY CONTROL MODULE INTERNAL FAILURE

Body Control Module Internal Failure:

WHEN MONITORED
Continuous.

SET CONDITION
If the Body Control Module (BCM) detects an internal malfunction, the DTC is set.

POSSIBLE CAUSES
- Open fused B(+) circuit
- Body control module

DIAGNOSTIC TEST

1. MEASURE THE VOLTAGE OF THE BCM POWER CIRCUIT




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.

Q: Is the voltage above 10 volts?

YES: Go to 2
NO: Repair the Fused B(+) circuit for an open. Perform BODY VERIFICATION TEST. Body Verification Test

2. MEASURE THE VOLTAGE OF THE BCM POWER CIRCUIT




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

Q: Is the voltage above 10 volts?

YES: Go to 3
NO: Repair the Fused B(+) circuit for an open. Perform BODY VERIFICATION TEST. Body Verification Test

3. MEASURE THE VOLTAGE OF THE BCM POWER CIRCUIT




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

Q: Is the voltage above 10 volts?

YES: Replace the Body Control Module. Perform BODY VERIFICATION TEST. Body Verification Test
NO: Repair the Fused B(+) circuit for an open. Perform BODY VERIFICATION TEST. Body Verification Test