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:

Tire Pressure Warning Ecu
Components COMPONENTS ILLUSTRATION Installation INSTALLATION PROCEDURE 1. INSTALL TIRE PRESSURE WARNING ECU (a) Install the tire pressure warning ECU with the bolt. Torque: 5.5 N·m {56 kgf·cm, 49 in·lbf} (b) Connect the connector. 2. INSTA ...

Inspection
INSPECTION PROCEDURE 1. INSPECT TRANSMISSION CONTROL SWITCH (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition ...

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