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NO COMMUNICATION WITH BCM AND CENTRAL LOCKING PUMP/SECURITY SYSTEM MODULE When Monitored and Set Condition • When Monitored: Continuous. • Set Condition: CAN Bus communication failure between the Body Control Module (BCM) and the Central Lock- POSSIBLE CAUSES CAN B BUS (+) CIRCUIT OPEN CAN B BUS (-) CIRCUIT OPEN CENTRAL LOCKING PUMP/SECURITY SYSTEM MODULE INTERNAL FAILURE For a complete Vehicle Theft Security System Circuit Diagram, (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECU- Diagnostic Test 1. MEASURE THE RESISTANCE OF THE CAN B BUS (+) CIRCUIT Turn the ignition off. Disconnect the CLP/SSM harness connector. Disconnect the BCM harness connector. Note: Check connectors - Clean/repair as necessary. Is the resistance below 1.0 ohm? Yes >> Go to 2 No >> Repair the CAN B Bus (+) circuit for an open. Perform VTSS VERIFICATION TEST. ZH VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS 8Q - 9 |