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Home >> Lexus >> 2008 >> LX 570 >> Repair and Diagnosis >> Electrical >> Gauges >> Meter >> Meter / Gauge System >> System Diagram

System Diagram

Fig 1: Meter And Gauge System Diagram (1 Of 2)
G05765389Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Meter And Gauge System Diagram (2 Of 2)
G05765390Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Communication Table 

COMMUNICATION REFERENCE

Sender Receiver Communication Signal Communication Line
Combination meter assembly
  • ECM
  • Main body ECU
Vehicle speed signal Direct Line
  • Main body ECU
Rheostat duty signal CAN
  • ECM
Vehicle specification signal (Destination/Handle code)
Display and navigation module display(1)
Multi-display(2)
Front passenger side seat belt warning light signal CAN
ECM Combination meter assembly
  • ECT PWR indicator light signal
  • CRUISE main indicator light signal
  • Engine coolant temperature signal
  • ATF temperature signal
  • Current gear position signal
  • Fuel injection information signal
  • Engine speed data
  • CHARGE indicator light signal
CAN
MIL signal Direct Line
Center airbag sensor Combination meter assembly
  • Passenger side seat belt buckle switch signal
  • SRS warning light signal
  • Diagnosis signal
CAN
Four wheel drive control ECU Combination meter assembly
  • 4LO indicator light signal
  • Center differential lock indicator light signal
CAN
Skid control ECU Combination meter assembly
  • ABS warning light signal
  • Slip indicator light signal
  • Vehicle speed signal
  • Brake warning light signal
  • CRAWL indicator light signal
CAN
Main body ECU Combination meter assembly
  • Driver side seat belt buckle switch signal
  • Courtesy light switch signal
  • BEAM indicator light signal
  • HEAD indicator light signal(3)
  • TAIL indicator light signal(4)
  • FRONT FOG indicator light signal
CAN
Tire pressure warning ECU Combination meter assembly Tire pressure warning light signal CAN
Seat belt control ECU(5) Combination meter assembly PCS indicator light signal CAN
ECM Combination meter assembly
  • Shift position P signal
  • Shift position R signal
  • Shift position N signal
  • Shift position D signal
  • Shift position 6 signal
  • Shift position 5 signal
  • Shift position 4 signal
  • Shift position 3 signal
  • Shift position 2 signal
  • Shift position 1 signal
  • Sports mode enable signal
  • Shift position signal
  • Sports shift reject buzzer signal
CAN
Steering pad switch Combination meter assembly Steering pad switch operation signal Direct Line
Fuel sender gauge Combination meter assembly Fuel level signal Direct Line
Turn signal flasher assembly Combination meter assembly Turn signal indicator (LH/RH) signal Direct Line
Washer fluid level sensor Combination meter assembly Washer information signal Direct Line
Parking assist ECU(6) Combination meter assembly
  • Clearance sonar indicator light signal
  • Clearance sonar information signal
CAN
Suspension control ECU Combination meter assembly
  • Access mode indicator light signal
  • 4-wheel AHC information signal
CAN
Headlight swivel ECU assembly Combination meter assembly AFS OFF indicator light signal CAN
Brake fluid level warning switch Combination meter assembly Brake fluid level warning light signal CAN
Oil level sensor Combination meter assembly Engine oil level signal CAN
Light control rheostat Combination meter assembly Illumination signal Direct Line
Generator Combination meter assembly CHARGE warning light signal Direct Line
Oil pressure sensor Combination meter assembly Oil pressure signal CAN
Air conditioning amplifier Combination meter assembly Outside temperature information signal CAN
Fold seat control ECU LH(7) Combination meter assembly 3rd seat information signal Direct Line
Fold seat control ECU RH(7) Combination meter assembly 3rd seat information signal Direct Line
Distance control ECU(8) Combination meter assembly
  • Diagnosis signal
  • Vehicle-to-vehicle distance control signal
  • Vehicle-to-vehicle distance signal
  • Front millimeter wave radar sensor grime signal
  • Bad weather detection signal
  • Approach warning signal
  • Preceding vehicle detection signal
  • Front millimeter wave radar sensor beam axis deviation signal
  • Dynamic radar cruise warning signal
  • Cruise control vehicle speed signal
  • Constant speed cruise signal
  • Radar sensor information signal
CAN
Certification ECU (Smart key ECU assembly) Combination meter assembly
  • Inside key existence warning signal
  • Low key battery warning signal
  • Shift position warning signal
  • Meter buzzer request signal
  • Door unlock mode display signal
  • Steering lock warning signal
  • Security warning light signal
CAN
(1) w/ Navigation System

(2) w/o Navigation System

(3) for U.S.A.

(4) except U.S.A.

(5) w/ Pre-Collision System

(6) w/ Intuitive Parking Assist System

(7) w/ Rear Power Seat Control System

(8) w/ Dynamic Radar Cruise Control System