Electronic Instrument Cluster

The Electronic Instrument Cluster (EIC) is easily distinguished from the mechanical instrument cluster by its digital and linear displays.

The electronic cluster includes a digital speedometer, odometer, oil pressure gauge, coolant temperature gauge, fuel gauge, and voltage gauge. It also has a series of warning indicator lamps designed to provide the driver with valuable information to ensure the vehicle is operating properly.

The electronic cluster receives virtually all of the information for its displays from the body controller and the engine controller via the CCD multiplex system.

The electronic cluster has two forms of diagnostic routines that are used to isolate problems within the cluster: self-diagnostics and CCD bus diagnostics. Self-diagnostics are accessed by simultaneously depressing the TRIP and TRIP RESET buttons. CCD bus diagnostic routines require the use of the DRBII diagnostic readout box.

Successful completion of the self-diagnostic test indicates if the problem is in the CCD bus, interfacing modules, connectors, wiring harnesses, or sensors outside the cluster.

The body controller (not the Electronic Instrument Cluster) stores the odometer information that is displayed on the instrument cluster. Therefore, when replacement of the electronic cluster is required, the odometer reading will not be affected. (See the "Body Controller" description found earlier in this section.)