Standard

With the Ignition Switch in RUN or START, voltage is applied to the Instrument Cluster through the CLUSTER Fuse, and power is supplied to the gauges and indicator under certain conditions.

Brake Indicator

The Brake Indicator comes on: 1) with the Ignition Switch in START to test the bulb (this connection is closed just before reaching the START position); 2) with the Brake Fluid Level Switch closed (low brake fluid level); 3) with the Anti-lock Pressure Switch closed (low pressure in system); and 4) with park brake applied.

Alternator Warning Indicator

The Alternator Warning Indicator, grounded through circuit 904, comes on if the voltage in the Voltage Regulator drops below the preset level.

Door Ajar Indicator

The Door Ajar Indicator comes on whenever a door is not completely closed.

Alarm Indicator

The Alarm Indicator comes on when the Ignition Switch is in the OFF position and a door is opened.

Check Engine Indicator

The Check Engine Indicator is turned on by the EEC Module when a fault is sensed in the EEC IV System.

Anti-lock Indicator

The Anti-lock Indicator is controlled by the Anti-lock Brake System.

Fasten Belts Indicator

The Fasten Belts Indicator is controlled by the Passive Restraint System.

Oil Pressure Indicator

The Oil Pressure Indicator is connected to the Oil Pressure Switch. The Switch is normally closed to ground, causing the light to turn on. With proper oil pressure, the Switch opens, breaking the circuit and causing the light to turn off.

Fuel Gauge

The Fuel Gauge is connected to the Fuel Gauge Sender through the Anti-slosh Module. The Sender is a variable resistor connected to a float in the fuel tank. When the fuel level is low, resistance is low; when fuel level is high, resistance is high.

The Anti-slosh Module provides a delay circuit to the Fuel Gauge to prevent the gauge from fluctuating as a result of fuel movement.

Temperature Gauge

The Temperature Gauge connects to the Engine Coolant Temperature Sender. The Sender is a temperature-sensitive variable resistor. When coolant temperature is low, resistance is high; when coolant temperature is high, resistance is low.

Analog Speedometer Assembly

The Speedometer Assembly includes the Speedometer, the Odometer and the Trip Odometer. All three are electronically controlled by a solid-state device that uses an input signal from the Vehicle Speed Sensor (VSS).

The Speedometer Assembly (-17255-) is serviceable only as a unit.