Doors, Hood and Trunk: Testing and Inspection

The complexity of the electronics involved with the various electronic control modules and the two multiplexed communication networks, preclude the use of workshop general electrical test equipment. Therefore, reference should be made to the PDU User Guide for detailed instructions on testing the central locking and lock actuation circuits.

The PDU systematically tests and analyses all functions of the locking actuators and body closing system.

Where a fault involving the locking actuators or closing system is indicated by the PDU, some basic diagnostic methods may be necessary to confirm that connections are good and that wiring is not damaged, before replacing the component.

For further information regarding trouble codes for this system, please refer to Body Control Module, Testing and Inspection Procedures.