Toyota Tundra Service Manual: System Diagram

SYSTEM DIAGRAM

Communication table:

Sender

Receiver

Communication Signal

Communication Line

ECM

Combination meter

  • TOW HAUL indicator light signal
  • Cruise control indicator light signal*4
  • SET indicator light signal*4
  • Engine coolant temperature signal
  • A/T OIL TEMP warning light signal
  • Current gear position signal
  • Fuel injection information signal
  • Engine speed data

CAN

Center airbag sensor

Combination meter

Passenger side seat belt buckle switch signal

CAN

4WD control ECU*1

Combination meter

  • SRS warning light signal
  • 4HI indicator light signal
  • 4LO indicator light signal

CAN

Skid control ECU

Combination meter

  • ABS warning light signal
  • AUTO LSD indicator light signal
  • SLIP indicator light signal
  • VSC OFF indicator light signal
  • Vehicle speed signal
  • Brake warning light signal

CAN

Air conditioning amplifier

Combination meter

Outside temperature signal

CAN

Main body ECU

Combination meter

  • Driver side seat belt buckle switch signal
  • Courtesy light switch signal
  • Key unlock warning signal
  • BEAM indicator light signal
  • HEAD indicator light signal*2
  • TAIL indicator light signal*3
  • Light reminder signal
  • Sliding roof open warning signal*7

CAN

Blind spot monitor sensor RH*5

Combination meter

Blind spot monitor system warning signal

CAN

Navigation receiver*6

Combination meter

Turn by turn navigation display signal

CAN

Brake control with bracket relay*8

Combination meter

Trailer brake control system warning signal

CAN

Millimeter Wave Radar Sensor Assembly*9

Combination meter

Dynamic radar cruise control system warning signal

CAN

Forward Recognition Camera*9

Combination meter

CAN

Tire Pressure Warning ECU

Combination meter

Tire pressure warning signal

CAN

  • *1: for 4WD
  • *2: for U.S.A.
  • *3: except U.S.A.
  • *4: w/ Cruise Control System or Dynamic Radar Cruise Control System
  • *5: w/ Blind Spot Monitor System
  • *6: w/ Navigation System
  • *7: w/ Sliding Roof System
  • *8: w/ Trailer Brake Control System
  • *9: w/ Dynamic Radar Cruise Control System
    System Description

    Tachometer Malfunction

    See More:

    Toyota Tundra Service Manual > Occupant Classification System: Rear Occupant Classification Sensor LH Collision Detection (B1787)
    DESCRIPTION DTC B1787 is set when the occupant classification ECU receives a collision detection signal, which is sent by the rear occupant detection sensor LH when an accident occurs. DTC B1787 is also set when the front seat frame with adjuster RH is subjected to a strong impact, even if an actual ...

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