Toyota 4Runner manuals

Toyota 4Runner: System Diagram

SYSTEM DIAGRAM

Input and Output Signal of Each ECU

Transmitting ECU (Transmitter)

Receiving ECU (Receiver)

Signal

Communication Method

Power management control ECU

Steering lock actuator assembly (steering lock ECU)

Power supply status (to steering lock motor)

LIN

Steering lock actuator assembly (steering lock ECU)

  • Certification ECU
  • Power management control ECU
  • ID code box

Sleep available status

LIN

Steering lock actuator assembly (steering lock ECU)

  • Certification ECU
  • Power management control ECU
  • ID code box

Lock/unlock sensor status

LIN

Steering lock actuator assembly (steering lock ECU)

  • Certification ECU
  • Power management control ECU
  • ID code box

Steering lock status

LIN

Steering lock actuator assembly (steering lock ECU)

  • Certification ECU
  • Power management control ECU
  • ID code box

Motor control status

LIN

Steering lock actuator assembly (steering lock ECU)

  • Certification ECU
  • Power management control ECU
  • ID code box

Diagnostic response status

LIN

Steering lock actuator assembly (steering lock ECU)

  • Certification ECU
  • Power management control ECU
  • ID code box

Lock/unlock sensor malfunction

LIN

Steering lock actuator assembly (steering lock ECU)

  • Certification ECU
  • Power management control ECU
  • ID code box

Power supply malfunction

(to steering lock motor)

LIN

Steering lock actuator assembly (steering lock ECU)

  • Certification ECU
  • Power management control ECU
  • ID code box

Motor driver malfunction

LIN

Steering lock actuator assembly (steering lock ECU)

  • Certification ECU
  • Power management control ECU
  • ID code box

Lock bar (stuck) status

LIN

Steering lock actuator assembly (steering lock ECU)

  • Certification ECU
  • Power management control ECU
  • ID code box

Push start status

LIN

Steering lock actuator assembly (steering lock ECU)

  • Certification ECU
  • Power management control ECU
  • ID code box

Lock/unlock relay drive status

LIN

Steering lock actuator assembly (steering lock ECU)

  • Certification ECU
  • Power management control ECU
  • ID code box

Engine start control status

LIN

Certification ECU

Steering lock actuator assembly (steering lock ECU)

Lock/unlock request

LIN

Main body ECU

  • Certification ECU
  • Power management control ECU

Driver side door courtesy switch signal

CAN

System Description
SYSTEM DESCRIPTION 1. DESCRIPTION (a) The steering lock system locks or unlocks the steering by activating the steering lock bar with a motor. The steering lock ECU activates the motor based on ...

How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: Use the following procedures to troubleshoot the steering lock system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT ...

Other materials about Toyota 4Runner:

Transmitter Battery(w/ Smart Key System)
Replacement REPLACEMENT CAUTION / NOTICE / HINT NOTICE: Take extra care when handling these precision electronic components. PROCEDURE 1. REMOVE TRANSMITTER BATTERY (a) Push the release hook knob and extract the emergency key. ...

Differential Oil
Replacement REPLACEMENT PROCEDURE 1. INSPECT DIFFERENTIAL OIL LEVEL (a) Stop the vehicle on a level surface. (b) Remove the differential filler plug and gasket. (c) Check that the oil level is within 0 to 5 mm (0 to 0.197 in.) of the bot ...

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