Starting System: Testing and Inspection

Before changing any component, refer to the circuit diagrams in the Electrical Guide and check the continuity of relevant harness circuits; in some instances, the PDU will not differentiate between a faulty component and a damaged connection or wiring.

Check any relevant connections and relay bases to confirm that the connection is electrically sound and that a terminal pin has not been pushed back into the connector shell, ie. not making a connection to its mating pin / socket.

Check the following fuses:

Engine Compartment Fusebox







Fuse F3 (25A) in the Engine Management Fusebox







Fuse F5 (10A) in the Under Hood Fusebox. The fusebox isolation relay is also shown.

Refer to PDU User Guide
Refer to the PDU User Guide for details of diagnosing and testing the Starting System. The PDU interrogates each component of the starting circuit directly via the diagnostic socket.

The PDU will give an indication of the integrity of each electronic and electrical component. It will indicate, for example, that the relay is not operating, but not on every occasion will it define the actual reason.