Toyota Tundra Service Manual: System Diagram

SYSTEM DIAGRAM

Transmitting ECU (Transmitter)

Receiving ECU

Signal

Communication Method

Skid control ECU

4 wheel drive control ECU

  • Wheel speed sensor error signal
  • Wheel speed signal
  • Vehicle wheel sensor power supply decline status signal
  • Vehicle speed signal

CAN communication system

ECM

4 wheel drive control ECU

  • Shift position P signal
  • Shift position N signal

CAN communication system

4 wheel drive control ECU

Combination meter assembly

  • 4WD indicator ON and flashing request signal
  • L4 indicator ON and flashing request signal
  • Buzzer sound demand signal

CAN communication system

4 wheel drive control ECU

Skid control ECU

  • Motor energizing signal
  • 4WD status signal
  • L4 status signal

CAN communication system

4 wheel drive control ECU

ECM

  • Cruise control cancel request signal
  • 4WD status signal

CAN communication system

    System Description

    Terminals Of Ecu

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