Mechanical Instrument Cluster (Mic)

Instrument cluster includes a speedometer, tachometer, fuel gauge, oil pressure gauge, water temperature gauge, voltmeter, Vacuum Fluorescent (VF) display and a series of warning lights.

Body Control Module (BCM) sends signals necessary for the cluster to position gauges. Cluster receives these messages through the PCI bus and translates them into gauge positions. BCM sends status of all indicator lights and dimming level to instrument cluster over PCI bus when ignition switch is in RUN or START positions. Malfunction indicator light (CHECK ENGINE) status is sent to BCM from PCM over PCI bus. Vacuum fluorescent odometer/trip display works when ignition switch is in RUN or START positions. BCM stores mileage information that odometer displays. If PCI bus is not functioning, odometer will display NO BUS instead of the mileage numbers. BCM sends mileage message and dimming level message to vacuum fluorescent display when ignition switch is in the ACC position. All other instrument cluster features only work when the ignition switch is in the RUN position.