Instrument Cluster / Carrier: Description and Operation

The instrumentation gauges are contained in a subdial assembly within the instrument cluster. The individual gauges are not serviceable. If one of the cluster gauges becomes faulty, the entire cluster would require replacement.

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

The MIC without a tachometer is equipped with a Light Emitting Diode (LED) transmission range indicator (PRND3L) and a vacuum fluorescent odometer display.

The MIC 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
- Coolant Temperature
- Anti-Lock Brake
- Brake
- Oil Pressure
- MIL (Malfunction Indicator Lamp)
- VTSS/SKIS Indicator
- Airbag
- Traction Control
- Autostick

Export Only - uses a message center that displays the following telltales:
- Turns Signals
- High Beam
- Tire Pressure Monitoring (TPM)
- Glow Plug (Export Only)
- Supplemental Cabin Heater (Export Only)

Refer to the vehicle Owner's Manual for operation instructions and conditions for the Instrument Cluster Gauges.

WATER IN FUEL LAMP - EXPORT
The Water In Fuel Lamp is located in the message center. When moisture is found within the fuel system, the sensor sends a message via the PCI data bus to the instrument cluster. The MIC illuminates the bulb in the message center, The sensor is located underneath the vehicle, directly above the rear axle. The sensor is housed within the fuel filter/water separator assembly cover. The sensor is not serviced separately. If found defective, the entire assembly cover must be replaced.

WATER IN FUEL LAMP/SENSOR - EXPORT
The Water In Fuel Sensor is a resistive type switch. It is calibrated to sense the different resistance between diesel fuel and water. When water enters the fuel system, it is caught in the bottom of the fuel filter/water separator assembly, where the sensor is located. Water has less resistance than diesel fuel. The sensor then sends a PCI data bus message to the instrument cluster to illuminate the lamp.

If the lamp is inoperative, perform the self diagnostic test on the instrument cluster to check the lamp operation before continuing diagnosis.

The Instrument Cluster receives and sends messages to other modules via the PCI bus circuit. 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 and body control module.

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. The odometer display uses blue-green vacuum fluorescent
digital characters.

On base models, the Instrument Cluster has three gauges: Speedometer, fuel and temperature.A red dot appears through openings in the Instrument Cluster face (P-R-N-D-2-1) to indicate the gear selected.

With other models, the Instrument Cluster may also include a tachometer and use a vacuum fluorescent shift indicator.

The high-line Instrument Cluster features Electroluminescent Illumination of the gauge faces (EL Panel). This feature eliminates the use of bulbs for ,gauge/panel lighting. In a manner similar to fluorescent lights, a/c voltage from an inverter integrated circuit chip is applied to the phosphorescent material, causing it to glow. The phosphorescent material is screen-printed onto flexible Mylar sheets that form the gauge faces.

The odometer display and door/liftgate ajar indicators turn on when a door is opened to assist both the customer and service technician to view the odometer without turning the ignition on.

On models with AutoStick, the display includes an O/D OFF indicator that is illuminated when the driver presses the Overdrive Off button on the transaxle shifter.

INSTRUMENT CLUSTER SELF TEST
1. Depress and hold the Odometer Reset button.
2. Turn the ignition switch to on.
3. 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.

MESSAGE CENTER (EXPORT ONLY)
The Message Center is above the brow of the Instrument Cluster. It houses the following warning indicators: Water & Fuel, High Beam, Left and Right turn signals, Glow Plug, and Supplimental Heat. On base models equipped with the three speed transaxle, these indicators appear in the face of the cluster. The
Security Alarm set indicator is now a large red circle symbol.