Combination Meters

COMBINATION METERS

System Description

UNIFIED METER CONTROL UNIT
- 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.
- Shift-up indicator is adopted in the combination meter (M/T models). Setting of shift-up engine speed rpm) can be set with odo/trip meter.
- Odo/trip meter and A/T indicator segments can be checked in self-diagnosis mode.
- Meters/gauges can be checked in self-diagnosis mode.

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 terminals 22 and 23.

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 18.

Ground is supplied
- to combination meter terminals 1, 24 and 25
- through grounds M30 and M66.




SPEEDOMETER
The speedometer indicates the vehicle speed.
- VDC/TCS/ABS control unit provides a vehicle speed signal to combination meter with CAN communication.
- Combination meter indicates the vehicle speed according to vehicle speed signal.




TACHOMETER
The tachometer indicates engine speed in revolutions per minute rpm).
- ECM provides engine speed signal to combination meter with CAN communication.
- Combination meter indicates the engine speed according to engine speed signal.




WATER TEMPERATURE GAUGE
The water temperature gauge indicates the engine coolant temperature.
- ECM provides engine coolant temperature signal to combination meter with CAN communication.
- Combination meter indicates the engine coolant temperature according to engine coolant temperature signal.

FUEL GAUGE
The fuel gauge indicates the approximate fuel level in the fuel tank.
- Combination meter reads a resister signal from fuel level sensor.

Signal is supplied
- through grounds M30 and M66
- through terminals 5 and 2 of the fuel level sensor unit and fuel pump (main) and
- through terminals 2 and 1 of the fuel level sensor unit (sub)
- to combination meter terminal 7 for the fuel gauge.
- Combination meter indicates the approximate fuel level according to the resister signal from fuel level sensor.

ODO/TRIP METER
- VDC/TCS/ABS control unit provides a vehicle speed signal to combination meter with CAN communication.
- Combination meter converts the vehicle speed signal to the 8-pulse signal.
- Combination meter uses the 8-pulse signal to calculate the mileage, and displays it.




How to Change The Display For Odo/trip Meter
Operating the odo/trip meter switch allows switching the mode in the following order.
- Switching odo/trip meter display to the setting of engine speed rpm) (M/T models) and reset of trip can be changed by time while pressing odo/trip switch.
- When resetting with "trip A" displayed, only "trip A" display is reset.

NOTE: 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.

SHIFT-UP INDICATOR
Shift-up indicator can be used when shifting up at a constant engine speed from any gear while driving. It becomes a guide for shift-up timing.




- Combination meter receives engine speed signal (CAN communication signal) from ECM.
- Shift-up indicator (1) flashes before reaching engine speed set, approximately 500 rpm before, then it illuminates when reaching the engine speed set.




Setting Procedure of Shift-up Engine Speed (rpm)
Setting of shift-up engine speed with odo/trip meter.
1. Push odo/trip switch (for less than 1 sec.) to change trip meter display to "trip A" - "trip B" - shift-up indicator mode.
2. Keep pressing odo/trip switch (for more than 1 sec.), then release odo/trip switch (display flashes and changes to shift-up indicator setting mode).
3. Set according to the following.
a. Keep pressing odo/trip switch (for more than 1 sec.): Increase setting engine speed by 500 rpm.
b. Push odo/trip switch (for less than 1 sec.): Increase setting engine speed by 100 rpm.

NOTE: The range of engine speed is 2,000 - 8,000 rpm (Pushing odo/trip switch when exceeding 8,000 rpm returns to 2,000 rpm).

4. Stop the flash when not pushing odo/trip switch for more than 5 sec. (Shift-up engine speed is set.)

NOTE: Setting is 8,000 rpm (the initial setting rpm) when disconnecting the battery cable.