Component Tests and General Diagnostics

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 Portable Diagnostic Unit (PDU) User Guide for detailed instructions on testing the Instrument Cluster and associated circuits.

The PDU systematically tests and analyses all functions of the Fuel Gauge, Fuel Level Sender unit and warning devices.

Where a fault involving a remote 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.