Trip Computer: Testing and Inspection

Information and Message Center
The complexity of the electronics involved with the speedometer and instrument cluster, of which the message center is a part, and the multiplexed communication network which is connected to it preclude the use of workshop general electrical test equipment. Therefore, reference should be made to the approved Jaguar diagnostic system for detailed instructions on testing the message center.

The approved Jaguar diagnostic system tests and analyses, in detail, all functions of the message center.

Where a fault is indicated, before installing a new component, some basic diagnostic methods may be necessary to confirm that connections are good and that wiring is not damaged.