General Description

Vehicle instrumentation is installed in the minor and major instrument clusters on the fascia. The calibration of the odometer and speedometer, the language of the message center and the composition of the indicator lamps are tailored to suit the destination market.

All of the inputs and outputs of the minor instrument cluster are routed through the major instrument cluster. The major instrument cluster provides the interface with the vehicle wiring.

The major instrument cluster is connected to both the CAN and the SCP network, and provides the interface for the transfer of messages between the two.

A microprocessor, in the major instrument cluster, controls the gauges and indicator lamps of both clusters, and the message center. To ensure correct operation of it's gauges, after disconnection the minor instrument cluster should always be connected to the major instrument cluster before the fascia harness is connected, or before the battery is connected.

The microprocessor also incorporates two trip computers, designated A and B. Switches on the fascia, and the push-button switch on the end of the left stalk of the steering column switch assembly, control the operation of the trip computers.