Home Vehicle Interior Meter/Gauge/Display METER / GAUGE SYSTEM
Last Modified: 11-27-2007 1.6 D
Service Category: Vehicle Interior Section: Meter/Gauge/Display
Model Year: 2008 Model: LX570 Doc ID: RM000002Z4P003X
Title: METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: SYSTEM DESCRIPTION (2008 LX570)

SYSTEM DESCRIPTION

1. METER GAUGE AND WARNING/INDICATOR



Meter/Gauge

Item

Details

Speedometer

Based on a signal received from the wheel speed sensor, the skid control ECU calculates the vehicle speed and transmits data to the combination meter (CAN).

Tachometer

The combination meter receives an engine speed signal from the ECM and the gauge needle operates (CAN).

ODO/TRIP meter

  • The combination meter receives a vehicle speed pulse integration signal from the skid control ECU and the ODO/TRIP meter display operates (CAN).
  • Using the ODO/TRIP switch, the ODO/TRIP meter display changes.

Fuel receiver gauge

The combination meter receives fuel amount information measured by the fuel sender gauge and the gauge needle operates (Direct line).

Engine coolant temperature receiver gauge

The combination meter receives an engine coolant temperature signal from the ECM and the gauge needle operates (CAN).

Oil pressure receiver gauge

The combination meter receives an engine speed signal from the ECM (CAN) and receives an oil pressure sender signal from the oil pressure sender (Direct line). Then the meter measures signals and the gauge needle operates.

Voltage meter

Monitors IG voltage and the gauge needle operates (Direct line).

Warning/Indicator

Item

Details

BEAM indicator light



Receives signals from the main body ECU (CAN).

FRONT FOG indicator light



The indicator turns on when a FRONT FOG illumination command signal is received (CAN).

A/T P warning light



Receives a shift position P signal and transfer neutral signal, and activates the warning light (CAN).

SRS warning light



Receives malfunction signals from the center airbag sensor (CAN).

DOOR indicator light



The open door indicator comes on when a signal is received from the main body ECU (CAN).

Driver side seat belt warning light



Receives driver seat belt signals (unfastened) from the main body ECU (CAN).

Brake warning light*1



  • Comes on when the parking brake switch is on (CAN).
  • Comes on when the brake fluid level warning switch is on (Direct line).
  • Comes on when the vehicle stability control system is malfunctioning.

Brake warning light*2



CHARGE warning light



Receives malfunction signals from the generator (Direct line).

4LO indicator light



Receives 4LO indicator light signals from the four wheel drive control ECU (CAN).

ABS warning light*1



Receives malfunction signals from the skid control ECU (CAN).

ABS warning light*2



MIL*1



Receives malfunction signals from the ECM (Direct line).

MIL*2



SECURITY warning light



Receives SECURITY warning light signals from the certification ECU (smart key ECU assembly) (Direct line).

CLEARANCE SONAR indicator light*3



Receives CLEARANCE SONAR indicator signals from the parking assist ECU (CAN).

ACCESS MODE indicator light



Receives ACCESS MODE indicator signals from the suspension control ECU (CAN).

AFS OFF indicator light



Receives AFS OFF indicator signals from the headlight swivel ECU assembly (CAN).

FUEL warning light



Receives fuel empty signals from the fuel sender gauge (Direct line).

SLIP indicator light



Receives malfunction signals from the skid control ECU (CAN).

CRUISE main indicator light



Receives a CRUISE on signal or malfunction signal from the ECM (CAN).

HEAD indicator light*1



Receives a taillight or headlight signal from the main body ECU (CAN)

TAIL indicator light*2



Receives a taillight or headlight signal from the main body ECU (CAN).

Turn signal indicator light (LH/RH)



Receives a turn signal from the FLASHER relay (Direct line).

RSCA OFF indicator light



Receives an RSCA OFF signal from the center airbag sensor (Direct line).

Tire pressure warning light



Receives a low tire pressure signal from the tire pressure warning ECU (CAN).

Master warning light



Receives warning signals from sensors and ECUs (Direct line and CAN).

CRAWL indicator light



Receives a CRAWL switch ON signal from the skid control ECU (CAN).

ECT PWR indicator light



Receives an ECT PWR switch ON signal from the ECM (CAN).

2nd START indicator light



Receives a 2nd START switch ON signal from the ECM (CAN).

Center differential lock indicator light



Receives a center differential lock switch ON signal from the four wheel drive control ECU (CAN).

PCS indicator light*4



Receives a PCS indicator light signal from the seat belt control ECU (CAN).

A/T P shift position indicator

Receives a P signal from the ECM (CAN).

A/T R shift position indicator

Receives an R signal from the ECM (CAN).

A/T N shift position indicator

Receives an N signal from the ECM (CAN).

A/T D shift position indicator

Receives a D signal from the ECM (CAN).

A/T S (1 to 6) shift position indicator

Receives a signal (1 to 6) from the ECM (CAN).

*1: for U.S.A.

*2: except U.S.A.

*3: w/ Intuitive Parking Assist System

*4: w/ Pre-Collision System

2. MULTI-INFORMATION DISPLAY

(a) Cruise information display:

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



Display

Outline

CURRENT

Receives vehicle speed pulse signals (CAN) and fuel consumption data, and measures the instant fuel consumption.

OUTSIDE TEMP

Receives an outside temperature condition signal via CAN communication and displays through the multi-display.

AFTER REFUELING

Receives vehicle speed pulse signals (CAN) and fuel consumption data, and measures the average fuel consumption from the time the vehicle was refueled.

CRUISING RANGE

  • Calculates the estimated distance to empty.
  • The distance is calculated using the fuel gauge value and long-term learned fuel consumption value.

AFTER START

(Average speed)

Receives vehicle speed pulse signals (via the direct line and CAN) and fuel consumption data, and measures the average vehicle speed from the time the engine was started.

AFTER START

(Travel distance)

Receives vehicle speed pulse signals (CAN) and fuel consumption data, and measures the distance driven from the time the engine was started.

Tire Pressure Reset Proceeding

Receives a tire pressure condition signal via CAN communication, and displays through the multi-display.

(b) Basic Flowchart.



(c) Multi-information display:

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

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