FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Up to VIN S5219999

Battery voltage is supplied to the gauges from the METER fuse in the fuse box when the ignition switch is in ON or START.

Fuel gauge
The fuel gauge pointer is controlled by magnetic coils inside the instrument cluster. The circuit is grounded through the fuel gauge sender inside the fuel tank unit. The sender acts as a variable resistor. When the tank is full, resistance is low, and the pointer indicates full. When the tank is low, resistance is high, and the pointer indicates empty.

Fuel gauge sender
A float with a variable resistor is mounted in the fuel tank. With a full tank, the float arm sits at the top of the tank and the variable resistance valve is high. As the float drops, so does the resistance valve.

Engine coolant temperature gauge
The pointer of the coolant temperature is moved by the magnetic field of two coils at right angles to each other. Battery voltage is applied to the C coil from the METER fuse. The circuit then divides into two. One path continues through the H coil and then to ground. The other path goes through the variable resistance engine coolant temperature sender and then to ground. When the coolant temperature is high, the resistance of the engine coolant temperature sender is low and less current flows through the H coil, pushing the pointer toward "H". When the coolant temperature is low, the resistance of the engine coolant temperature sender is high and more current flows through the H coil pushing the pointer toward "C". With two coils operating the pointer, the gauge is not affected by changes in the voltage.

Engine coolant temperature sender
The engine coolant temperature sender is a thermistor, in which resistance decreases as engine coolant temperature increases. The sender operates the engine coolant temperature gauge.

Tachometer
The tachometer is controlled by a solid state circuit. With the engine running, ignition coil pulses proportional to engine speed are read into the solid state circuits, which output the engine speed in RPM's through the tachometer.

Speedometer
The speedometer is connected to the differential of the transaxle by a flexible cable and a driven gear assembly. The cable drives the speedometer which registers speed in mph and kph. The cable also drives an odometer which records distance traveled in miles and tenths of a mile.

NOTE: The speedometer driven gear assembly contains the vehicle speed sensor.