Operation CHARM: Car repair manuals for everyone.

Combination Meters

System Description

UNIFIED CONTROL METER
- Speedometer, odo/trip meter, tachometer, fuel gauge and water temperature gauge are controlled by the unified meter control unit, which is built into the combination meter.
- Digital meter is adopted for odo/trip meter.*
*The record of the odometer 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 segments can be checked in diagnosis mode.
- Meter/gauge can be checked in diagnosis mode.

HOW TO CHANGE THE DISPLAY FOR ODO/TRIP METER

- The vehicle speed signal and the memory signals from the meter memory circuit are processed by the combination meter and the mileage is displayed.




- Depressing the odometer/trip switch toggles the mode in the following order.
- The odo/trip meter display mode toggling and trip display resetting can be identified by the amount of time that elapses from pressing the odo/trip meter switch to releasing it.
- When resetting with trip A displayed, only trip A display is reset (Trip B operates the same way).

POWER SUPPLY AND GROUND CIRCUIT

Power is supplied at all times
- through 10 A fuse [No. 19, located in the fuse block (J/B)]
- to combination meter terminal 21.

With the ignition switch in the ON or START position, power is supplied
- through 10 A fuse [No. 14, located in the fuse block (J/B)]
- to combination meter terminal 22.

With the ignition switch in the ACC or ON position, power is supplied
- through 10 A fuse [No. 6, located in the fuse block (J/B)]
- to combination meter terminal 37.

Ground is supplied
- to combination meter terminals 23, 25, and 28
- through body grounds M57, M61, and F14.

WATER TEMPERATURE GAUGE
The water temperature gauge indicates the engine coolant temperature.

ECM provides an engine coolant temperature signal to combination meter for water temperature gauge with CAN communication line.

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

ECM provides an engine speed signal to combination meter for tachometer with CAN communication line.

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 35
- from terminal 2 of the fuel level sensor unit
- through terminal 5 of the fuel level sensor unit and
- through body grounds M57, M61, and F14.

SPEEDOMETER (WITH 5-SPEED A/T)
The ABS actuator and electric unit (control unit) provides a vehicle speed signal to the combination meter for speedometer with CAN communication line.

SPEEDOMETER (EXCEPT 5-SPEED A/T)
The vehicle speed sensor provides a vehicle speed signal to the combination meter for speedometer indication.

CAN Communication System Description
Refer to Information Bus.