METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: SYSTEM DESCRIPTION (2008 Sequoia)

SYSTEM DESCRIPTION

1. METER GAUGE AND WARNING INDICATOR

Meter/Gauge

Item	Details
Speedometer	Based on signal received from wheel speed sensor, skid control ECU calculates vehicle speed and transmits data to combination meter (CAN).
ODO/TRIP meter	Combination meter receives vehicle speed pulse integration signal from skid control ECU, and ODO/TRIP meter display operates (CAN). Using ODO/TRIP switch, ODO/TRIP meter display changes.
Tachometer	Combination meter receives engine rpm signal from ECM, and gauge needle operates (CAN).
Engine coolant temperature gauge	Combination meter receives water temperature signal from ECM, and gauge needle operates (CAN).
Fuel receiver gauge	Combination meter receives fuel amount information measured by fuel sender gauge, and gauge needle operates (Direct line).
Voltage meter	Monitors IG voltage and gauge needle operates (Direct line).
Oil pressure receiver gauge	Combination meter receives engine rpm signal from ECM (CAN), and receives oil pressure sender signal from oil pressure sender (Direct line). Then meter measures signals and gauge needle operates.
A/T oil temperature receiver gauge*1	Combination meter receives A/T oil temperature signal from ECM, and gauge needle operates (CAN).

*1: w/ A/T Oil Temperature Receiver Gauge

Warning/Indicator

Item	Details
BEAM indicator light	Receives signal from main body ECU (CAN).
A/T OIL TEMP warning light	Warning is displayed when oil temperature is high (CAN).
SRS warning light	Receives malfunction signal from airbag sensor (CAN).
DOOR indicator light	Open door indicator comes on when signal is received from main body ECU (CAN).
Driver side seat belt warning light	Receives driver seat belt signal (Unfastened) from main body ECU (CAN).
Brake warning light*1	Comes on when parking brake switch is ON (CAN). Brake fluid level warning switch is ON (Direct line). Vehicle stability control system is malfunctioning.
Brake warning light*2
CHARGE warning light	Receives malfunction signal from generator (Direct line).
4LO indicator light*3	Receives 4LO signal from 4WD control ECU (CAN).
ABS warning light*1	Receives malfunction signal from skid control ECU (CAN).
ABS warning light*2	Receives malfunction signal from skid control ECU (CAN).
MIL	Receives malfunction signal from ECM (Direct line).
FUEL warning light	Receives fuel empty signal from fuel sender gauge (Direct line).
MAIN REQD indicator light*4	Blinks when 4500 miles have been traveled, after ODO/TRIP switch is set (Direct line). Illuminates when 5000 miles have been traveled, after ODO/TRIP switch is set (Direct line).
SLIP indicator light	Receives malfunction signal from skid control ECU (CAN).
WASHER warning light*5	Warning is displayed when the washer level is low (Direct line).
4HI indicator light*3	Receives 4HI signal from 4WD control ECU (CAN).
CRUISE main indicator light	Receives CRUISE on signal or malfunction signal from ECM (CAN).
HEAD indicator light*1	Receives taillight or headlight signal from main body ECU (CAN).
TAIL indicator light*2	Receives taillight or headlight signal from main body ECU (CAN).
Turn signal indicator light (LH/RH)	Receives turn signal from FLASHER relay (Direct line).
AUTO LSD indicator light	Receives VSC OFF switch ON signal from skid control ECU (CAN).
VSC OFF indicator light	Receives VSC control off signal or VSC system fail-safe control signal from skid control ECU (CAN).
RSCA OFF indicator light	Receives RSCA OFF signal from airbag sensor (Direct line).
TOW HAUL indicator light*6	Receives towing indicator signal from ECM (CAN).
Tire pressure warning light	Receives low tire pressure signal from tire pressure warning ECU (Direct line).
CENTER DIFF. indicator light*3	Receives a DIFF. LOCK signal from 4WD control ECU (CAN).
EPS warning light	Receives malfunction signal from power steering ECU (CAN).
Master warning light*7	Receives warning signal from each ECU (CAN).
Height control MAN. indicator light*8	Receives a suspension control manual signal from the suspension control ECU (CAN).
Height control HI indicator light*8	Receives a suspension position HI signal from suspension control ECU (CAN).
Height control N indicator light*8	Receives a suspension position N signal from suspension control ECU (CAN).
Height control LO indicator light*8	Receives a suspension position LO signal from suspension control ECU (CAN).
A/T P shift position indicator	Receives P signal from ECM (Direct line).
A/T R shift position indicator	Receives R signal from ECM (Direct line).
A/T N shift position indicator	Receives N signal from ECM (Direct line).
A/T D shift position indicator	Receives D signal from ECM (Direct line).
A/T S shift position indicator	Receives S signal from ECM (Direct line).
A/T 6 shift position indicator*9	Receives 6 signal from ECM (CAN).
A/T 5 shift position indicator	Receives 5 signal from ECM (CAN).
A/T 4 shift position indicator	Receives 4 signal from ECM (CAN).
A/T 3 shift position indicator	Receives 3 signal from ECM (CAN).
A/T 2 shift position indicator	Receives 2 signal from ECM (CAN).
A/T 1 shift position indicator	Receives 1 signal from ECM (CAN).

*1: for U.S.A.

*2: except U.S.A.

*3: for 4WD

*4: for U.S.A. without Multi-information Display

*5: w/o Multi-information Display

*6: for 3UR-FE with Towing Package

*7: w/ Multi-information Display

*8: w/ Air Suspension

*9: for 3UR-FE

2. MULTI-INFORMATION DISPLAY (w/ Multi-information display)

When the INFO switch is pressed, the multi-information display is changed between the following: cruise information display, warning display.

(a) Cruise information display:

The cruise information is displayed in the following order each time the INFO switch is pressed.

Display	Outline
Average Fuel Economy	Value that has been calculated by combination meter, which is based on distance driven and fuel consumption volume (fuel injection signal from No. 1 cylinder). This display is updated every 10 seconds.
Current Fuel Economy	Value that has been calculated by combination meter. When ignition switch is turned ON, combination meter calculates this value based on distance driven and fuel consumption volume (fuel injection signal from No. 1 injector). This display is updated every 0.5 seconds.
Distance To Empty	Value that has been calculated by combination meter. When ignition switch is turned ON, combination meter calculates this value based on fuel consumption data that combination meter continuously monitors and stores in its memory, and residual fuel volume data. This display is updated every km (mile).
Trip Timer	Calculates and displays elapsed time since engine start signal was input into combination meter. This display is updated every second.
Average Speed	Value that has been calculated by combination meter. This calculation is based on elapsed time since engine start signal was received by combination meter and vehicle speed signal received by combination meter. This display is updated every 10 seconds.

(b) Warning display:

When a warning is necessary, the warning display interrupts the multi-information display.

The master warning light may illuminate or blink and buzzer may sound depending on the item in the multi-information display.

Display	Details
DRIVER DOOR OPEN PASSENGER DOOR OPEN LEFT REAR DOOR OPEN RIGHT REAR DOOR OPEN BACK DOOR OPEN	Any door is open
ENGINE COOLANT HOT	Engine coolant temperature is more than 120°C (248°F)
MAINT REQD SOON	Comes on approximately 7242 km (4500 miles) after engine oil is changed
PARKING BRAKE ENGAGED	Parking brake is still engaged with vehicle having reached speed of 5 km/h (3 mph)
LOW WASHER FLUID	Washer fluid level is low
LOW FUEL LEVEL	Fuel level is low
TRANSMISSION HOT	ATF temperature is high
MAINT REQD	Comes on approximately 8047 km (5000 miles) after engine oil is changed

3. ACCESSORY METER

(a) This system has the following functions.

(1) Clock:

When the ignition switch is turned ON or ACC, the clock display is ON.

(2) Cruise Information:

For cruise information, four type of information (Outside temperature, average fuel economy, instant fuel economy, and distance to empty) can be displayed.

The cruise information units can be changed by using the SETUP switch.

Outside temperature → Average fuel economy → Instant fuel economy → Distance to empty.

Information	Outline
Outside Temperature:	Displays outside temperature in accordance with the outside temperature sensor signal from the A/C amplifier.
Average Fuel Economy:	Displays a value that has been calculated by the combination meter, which is based on the distance driven and the fuel consumption volume (fuel injection signal from the No. 1 cylinder). This display is updated every 0.5 seconds.
Instant Fuel Economy:	Displays a value that has been calculated by the combination meter. When the ignition switch is turned ON, the combination meter calculates this value based on the distance driven and the fuel consumption volume (fuel injection signal from the No. 1 injector). This display is updated every 0.5 seconds.
Distance to Empty:	When the ignition switch is ON, displays a value that has been calculated by the combination meter (meter ECU), which is based on the following: 1) fuel consumption data that the combination meter (meter ECU) continuously monitors and stores in its memory; and 2) residual fuel volume data. This display is updated every 1.6 km (1 mile).

(3) Security Indicator Light:

Informs the driver of the theft deterrent system status.
Depending on operation of the transponder key ECU, the interior security indicator light comes on or starts blinking.

(4) Clearance Warning Indicator:

Displays the location of the obstacle and the approximate distance between the vehicle and the obstacle.
Turns on and off according to the intuitive parking assist system status.
Emits an intermittent sound to inform the driver that the ECU has detected an obstacle within the prescribed ranges.