Electronic Instrument Cluster

ELECTRONIC INSTRUMENT CLUSTER

The electronic instrument cluster is easily distinguished from the mechanical instrument cluster by its digital and linear displays. The electronic cluster receives virtually all of its information to the displays from the body controller and engine controller via the CCD multiplex system. The electronic cluster includes a digital speedometer, odometer, oil pressure gauge, coolant temperature gauge, fuel gauge, voltage gauge, and a series of warning indicator lamps to provide the driver with all the necessary information to insure that the vehicle is in perfect operating condition.

The electronic cluster (C-body & Y-body) has two forms of diagnostic routines that are used to isolate problems within the cluster. Self diagnostics, use the trip and trip reset buttons for access, and CCD bus diagnostics routines require the use of a DRBIITM diagnostic tester. Successful completion of the self diagnostic test indicates that the problem is in the CCD bus, interfacing modules, connectors, wiring harnesses, or sensors outside the cluster (For connector pinout see Connector Views).

In 1990 C-body & Y-body vehicles, the body controller is used to store odometer information displayed in the instrument cluster and not the electronic cluster itself. Therefore, when replacement of the electronic cluster is required, the odometer reading will not be affected (See BODY CONTROLLER).