Instrument Cluster

The Instrument Cluster receives and sends messages via the PCI Bus. The indicator lamps will illuminate briefly for a bulb check when the ignition is turned from off to run. All of the gauges receive their information via the PCI Bus from the Powertrain Control Module (PCM) and the Body Control Module (BCM).

The gauges and the LEDs are not individually replaceable thereby requiring complete replacement of the Instrument Cluster if a repair is necessary. In the event that the Instrument Cluster loses communication with other modules on the PCI Bus, the cluster will display "no bus" in the VF display.

The Trip/Reset button is used to switch the display from trip to total mileage. Holding the button when the display is in the trip mode will reset the trip mileage. This button is also used to put the cluster into self-diagnostic mode (Early Build Vehicles Only). The odometer display uses blue-green vacuum fluorescent digital characters.

The Instrument Cluster has four gauges: Speedometer, tachometer, fuel, and temperature. The Instrument Cluster uses a vacuum-fluorescent shift indicator.

The Instrument Cluster contains the Chime tone generator. The cluster provides a 5-volt pull-up to the BCM, which uses a hardwire low-side driver to control the chime. The cluster monitors the PCI bus and based on information from various modules, and cluster internal parameters, will request chimes from the BCM as well as illuminating the appropriate warning indicators.

The odometer display and door/liftgate-ajar message comes on when a door is opened. This feature assists both the customer and the service technician by allowing them to view the odometer without turning the ignition on. The cluster has the following warning indicators: Turn Signals (green), High Beam (blue), Check Engine (amber), Oil Pressure (red), Seat Belt (red), Charging System (red), Airbag (red), Low Fuel (amber), Engine Temperature (Red), Brake/Park Brake (red), ABS (amber), Traction Control (amber), Front Fog (green), Tire Pressure Monitoring System (amber - if equipped). For complete details of the Instrument Cluster, refer to the CS Service Information.

INSTRUMENT CLUSTER SELF TEST (EARLY BUILD VEHICLES ONLY)
1. Depress and hold the Odometer Reset button for 10 seconds.
2. Release the Odometer reset button.

The Instrument Cluster will illuminate all indicators and step the gauges through several calibration points. Also, the odometer will display any stored codes that may have set.