Electronic Instrument Cluster

ELECTRONIC INSTRUMENT CLUSTER

The electronic instrument cluster is easily distinguished from the mechanical instrument cluster by its digital and linear I displays. The electronic cluster receives virtually all of its information to the displays from the body controller and engine controller via the C2D multiplex system. The electronic cluster includes an oil pressure gauge, coolant temperature gauge, fuel gauge, voltmeter, 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) has two forms of diagnostic routines that are used to isolate problems within the cluster. Self diagnostics, using the trip and trip reset buttons for access, and C2D bus diagnostics routines which require the use of a DRBII diagnostic tester. Successful completion of the self diagnostic test indicate that the problem is in the C2D bus, interfacing modules, connectors, wiring harnesses, or sensors outside the cluster.

In 1989 C-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.