Refer to PDU User Guide

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 clock circuit.

The PDU systematically tests and analyses the clock and the electrical connections to it.

Where a fault involving the clock 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 minor instrument cluster.