Indicators Cluster

CIRCUIT OPERATION
If the complete circuit for an indicator is not shown on the Instrument Panel schematics, see the circuit referred to for the complete operation of the indicator. Only the indicators that do not appear in other schematics are described in this section.

Oil Pressure Indicator
The OIL Pressure Indicator goes on to warn of low oil pressure when the Fuel Pump/Oil Pressure Sender/Switch is closed. The Fuel Pump/Oil Pressure Sender/Switch is closed when oil pressure falls below 27 kPa (4 psi). When the engine is started, oil pressure is below 27 kPa, so the Fuel Pump/Oil Pressure Sender/Switch is closed and the OIL Pressure Indicator goes on momentarily as a Bulb Test. The OIL Pressure Indicator goes off as soon as oil pressure is above 27 kPa (4 psi) and the Fuel Pump/Oil Pressure Sender/Switch opens.

Fuel Gage
With the Ignition Switch in RUN, BULB TEST, or START, voltage is available through the GAGES Fuse for the Fuel Gage. The Fuel Gage pointer is controlled by varying the Fuel Gage Sender resistance. Voltage is applied from the GAGES Fuse to the Empty coil of the Fuel Gage and divides into two paths: 1) through the Fuel Gage Sender to ground, and 2) through the Full coil to ground. The Gage pointer is controlled by changes of the Fuel Gage Sender resistance. When the Fuel Gage Sender resistance decreases, more current flows through the Fuel Gage Sender and the Empty coil. At the same time, current in the Full coil decreases. The Fuel Gage Sender resistance is 90 ohms when full and 0 ohms when empty.

Tailgate Ajar Indicator (Wagon only)
With the Igntion Switch in RUN, BULB TEST, or START, voltage is applied through the GAGES Fuse to the indicator. When the tailgate is ajar, the Tailgate Ajar Switch closes, providing a ground for the indicator.

Speedometer
The Speedometer pointer is moved by the magnetic field of two coils. These coils are driven by a solid state control module.

The Vehicle Speed Sensor, located in the transaxle, generates an AC voltage that is sent to the Electronic Control Module (ECM). The ECM processes this voltage into a square wave. The pulses generated are sent to the Speedometer at 4000 pulses per mile.

Odometer
The Odometer is a mechanical display. It is driven by an electric stepper motor that is fed form a solid state control module. The stepper motor turns in response to the number of pulses it receives from the ECM.