Refer to PDU User Guide

The complexity of the electronics involved with the Instrument Cluster and the two multiplexed communication networks which are connected to it, 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 Instrument Cluster and associated circuits.

The PDU systematically tests and analyses all functions of the Instrument Cluster, the various systems controlled by it and individual sensors which are attached to each separate system.

Where a fault involving a remote sensor e.g. water temperature sensor, is indicated, some basic diagnostic methods may be necessary to confirm that connections are good and that wiring is not damaged, before replacing the component.

Diagnostics using the PDU is via the CAN network, accessed at the diagnostic connector on the car.