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:

Reassembly
REASSEMBLY PROCEDURE 1. INSTALL PISTON SEAL (a) Apply a light layer of lithium soap base glycol grease to the entire inner and outer circumference of a new piston seal. Text in Illustration *1 Lithium s ...

Monitor Drive Pattern
MONITOR DRIVE PATTERN 1. TEST MONITOR DRIVE PATTERN FOR ECT CAUTION: Perform this drive pattern on a level surface and strictly observe the posted speed limits and traffic laws while driving. HINT: Performing this drive pattern is one method to simulate ...

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