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System Diagram

  1. COMBINATION METER ASSEMBLY 
    Fig 1: Combination Meter Assembly System Diagram (1 Of 2)
    G04379929Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
    Fig 2: Combination Meter Assembly System Diagram (2 Of 2)
    G04379930Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

    GATEWAY: 

    GATEWAY REFERENCE

    Sender Receiver Communication Signal Communication Line
    Gateway ECU Combination meter
    • Multiplex communication signal
    		 BEAN

    HINT:

    CAN signals and AVC-LAN signals are transmitted to or received from the combination meter assembly through the gateway ECU.

    CAN: 

    CAN REFERENCE

    Sender Receiver Communication Signal Communication Line
    Distance Control ECU ((1)) Combination meter
    • Laser cruise signal
    • Diagnosis signal (Cruise Control)
    		 CAN-BEAN
    Skid Control ECU Combination meter
    • Brake warning light signal
    • Parking brake switch signal
    • ABS warning light signal
    • VSC warning light signal ((2))
    • Request signal to turn on / blink SLIP ((2)) indicator light
    • Diagnosis signal (ABS, VSC)
    		 CAN-BEAN
    ECM Combination meter
    • ECT indicator signal
    • Test mode signal
    • Starter signal
    • Diagnosis signal (ABS, VSC, Cruise control)
    • Shift position signal
    • Engine coolant temperature signal
    • Fuel injection volume signal (for FUEL gauge control)
    • Radar cruise signal
    		 CAN-BEAN
    (1) w/ Dynamic Laser Cruise Control System. In addition, the distance control ECU communicates with the combination meter assembly via ECM.
    (2) w/ VSC

    BEAN: 

    BEAN REFERENCE

    Sender Receiver Communication Signal Communication Line
    Body ECU Combination meter
    • Rear door courtesy light switch signal
    • Passenger door courtesy light switch signal
    • Driver door courtesy light switch signal
    • Driver side seat belt buckle light switch signal
    • Diagnosis signal
    • Illumination signal
    • Request signal to turn on the headlight / taillight
    		 BEAN
    Front Controller Combination meter
    • Engine oil level signal
    • Engine oil pressure signal
    • Washer level sensor signal
    • Alternator L signal
    		 BEAN
    A/C Control ECU Combination meter
    • Outside temperature signal
    		 BEAN
    Power Source ECU Combination meter
    • The power source signal
    		 BEAN
    Certification EUC Combination meter
    • The door condition signal
    		 BEAN
    Combination meter Power Source ECU
    A/C Control ECU
    Body ECU
    Front Controller
    Rain sensor
    Certification EUC
    • Vehicle speed signal
    		 BEAN
    Combination meter Power Source ECU
    Body ECU
    • Light control rheostat signal
    		 BEAN
    Combination meter A/C Control ECU
    Memory mirror ECU LH / RH
    • Vehicle specification signal
    		 BEAN
    Combination meter Certification EUC
    Body ECU
    Gateway ECU
    • ODO meter signal
    		 BEAN
    Combination meter Gateway ECU
    • Vehicle warning signal
    		 BEAN

    AVC-LAN: 

    AVC-LAN REFERENCE

    Sender Receiver Communication Signal Communication Line
    Multi-Display Combination meter
    • Driver monitor operation signal
    		 AVC-LAN-BEAN
    Combination meter Multi-Display
    • Driver monitor information signal (possible running distance / average vehicle speed / drive distance / average fuel consumption / travel time)
    		 AVC-LAN-BEAN

    Direct Line: 

    DIRECT LINE REFERENCE

    Sender Receiver Communication Signal Communication Line
    Headlight Auto Level ECU Combination meter
    • Headlight level warning signal
    		 Direct Line
    Airbag Sensor Assembly Center Combination meter
    • Diagnosis code signal
    • Passenger seat occupant classification signal
    • Passenger seat buckle switch signal
    • Request signal to turn on airbag warning light
    • Request signal to blink airbag warning light
    		 Direct Line
    Transponder Key ECU ((3)) Combination meter
    • Security indicator light signal
    		 Direct Line
    Certification ECU ((4)) Combination meter
    • Single buzzer sounding signal
    • Single to inform if key is in the cabin
    • Key battery information signal
    • Single to inform that engine cannot be restarted
    • A signal to inform if key is on front seats.
    • Incorrect key signal
    • Shift position warning signal
    • Request signal to sound a buzzer
    • Door open indication signal
    		 Direct Line
    Combination meter Hazard Switch
    Seat Heater Switch
    Cigar Lighter
    A/T Shift Lever
    Audio Controller
    Navigation ECU
    Heater Control Panel
    • Illumination control signal
    		 Direct Line
    (1) w/ Dynamic Laser Cruise Control System. In addition, the distance control ECU communicates with the combination meter assembly via ECM.
    (2) w/ VSC
    (3) w/o Smart key System
    (4) w/ Smart key System
  2. ACCESSORY METER ASSEMBLY 
    Fig 3: Accessory Meter Assembly System Diagram
    G04379931Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

    GATEWAY: 

    GATEWAY REFERENCE

    Sender Receiver Communication Signal Communication Line
    Gateway ECU Each ECU
    • Multiplex communication signal
    		 AVC-LAN

    HINT:

    AVC-LAN signals are transmitted to or received from the combination meter assembly through the ECU.

    AVC-LAN: 

    AVC-LAN REFERENCE

    Sender Receiver Communication Signal Communication Line
    Navigation ECU ((1)) Accessory Meter
    • GPS signal
    		 AVC-LAN-BEAN
    Audio Controller Accessory Meter
    • Audio display signal
    		 AVC-LAN-BEAN
    (1) w/ Dynamic Laser Cruise Control System. In addition, the distance control ECU communicates with the combination meter assembly via ECM.

    Direct Line 

    DIRECT LINE REFERENCE

    Sender Receiver Communication Signal Communication Line
    Body ECU Accessory Meter
    • Air conditioning display, drive monitor display and warning display
    		 Direct Line
    Airbag Sensor Assembly Center Accessory Meter
    • Passenger airbag warning signal
    		 Direct Line
    Combination Meter Accessory Meter
    • Passenger seat belt warning signal
    • Illumination signal
    		 Direct Line
    Body ECU Accessory Meter
    • ACAN signal
    		 Direct Line
    w/o Smart Key System
    w/ Smart Key System
    (1) w/ Navigation System
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