Instrument Cluster / Carrier: Description and Operation

INTRODUCTION
The instrumentation gauges on NS vehicles are contained in a subdial assemblies within the instrument cluster. The individual gauges are not serviced separately. If one of the cluster gauges becomes faulty the entire subdial would require replacement and all gauges will have to be calibrated. Refer to the proper Body Diagnostic Procedure for calibration procedures.

MECHANICAL INSTRUMENT CLUSTER (MIC)
The Body Control Module sends the angular position of the gauges, the status of all CCD indicator lamps, the status and dimming of the mechanical instrument cluster (MIC) over the CCD bus when the ignition is in the OFF (unlock), RUN, or START positions. The PRNDL (VFD, if equipped) and odometer/trip displays work when the ignition is in the OFF (unlock), RUN, or START positions; all other MIC features work only when ignition is in the RUN position. On transition of the ignition from the OFF to the RUN position, a bulb check is performed. This consists of activating all CCD controlled indicator lamps and all VF display segments for approximately 2 - 4 seconds. The PRNDL bulb check is aborted if the gear selector is moved from the PARK position, or if the engine exceeds 450 rpm.

SYSTEM OPERATION

Instrument Cluster
The Mechanical Instrument Cluster with tachometer is equipped with a electronic vacuum fluorescent transmission range indicator (PRND3L), odometer, and trip odometer display.

The Mechanical Instrument Cluster without tachometer is equipped with a cable operated transmission range indicator (PRND21).

The instrument cluster is equipped with the following warning lamps:
- Lift Gate Ajar
- Low Fuel Level
- Low Windshield Washer Fluid Level
- Cruise
- Battery Voltage
- Fasten Seat Belt
- Door Ajar