Instrument Panel, Gauges and Warning Indicators: Description and Operation

Meters and Gauges

System Description

UNIFIED CONTROL METER
- Speedometer, odo/trip meter, tachometer, fuel gauge and water temperature gauge are controlled totally by control unit built-in combination meter.
- Digital meter is adopted for odo/trip meter.*

*The record of the odo meter is kept even if the battery cable is disconnected. The record of the trip meter is erased when the battery cable is disconnected.

- Odo/trip meter is indicated for about 30 seconds after ignition switch has been turned OFF.
- Odo/trip meter segment can be checked in diagnosis mode.
- Meter/gauge can be checked in diagnosis mode.




HOW TO CHANGE THE DISPLAY FOR ODO/TRIP METER

NOTE: Turn ignition switch to the "ON" position to operate odo/trip meter.

POWER SUPPLY AND GROUND CIRCUIT

Power is supplied at all times
- through 10 A fuse [No.12, located in the fuse block (J/B)]
- to combination meter terminal 62.

With the ignition switch in the ACC or ON position, power is supplied
- through 10 A fuse [No.1, located in the fuse block (J/B)]
- to combination meter terminal 31.

With the ignition switch in the ON or START position, power is supplied
- through 10 A fuse [No.30, located in the fuse block (J/B)]
- to combination meter terminal 66.

Ground is supplied
- to combination meter terminal 59
- through body grounds M9, M25 and M87.

WATER TEMPERATURE GAUGE
The water temperature gauge indicates the engine coolant temperature. The reading on the gauge is based on the resistance of the thermal transmitter.

As the temperature of the coolant increases, the resistance of the thermal transmitter decreases. A variable ground is supplied to terminal 18 of the combination meter for the water temperature gauge. The needle on the gauge moves from "C" to "H".

TACHOMETER
The tachometer indicates engine speed in revolutions per minute (rpm).

The tachometer is regulated by a signal
- from terminal 25 of the ECM
- to combination meter terminal 16 for the tachometer.

FUEL GAUGE
The fuel gauge indicates the approximate fuel level in the fuel tank.
The fuel gauge is regulated by a variable ground signal supplied
- to combination meter terminal 17 for the fuel gauge
- from terminal 2 of the fuel level sensor unit
- through terminal 5 of the fuel level sensor unit and
- through body ground B7 and B12 (without rear sunshade) or B46 (with rear sunshade)

SPEEDOMETER
The combination meter provides a voltage signal to the vehicle speed sensor for the speedometer.

The voltage is supplied
- from combination meter terminal 15 for the speedometer
- to terminal 1 of the vehicle speed sensor (with TCS)
- to terminal 19 of ABS actuator and electric unit (without TCS)

The speedometer converts the voltage into the vehicle speed displayed.