STEERING LOCK SYSTEM SYSTEM DESCRIPTION


  1. DESCRIPTION


    1. The steering lock system locks and unlocks the steering lock by activating the steering lock bar with a motor. The steering lock ECU activates the motor based on permission signals from the certification ECU and power management control ECU*1 (power source control ECU*2).


      • *1: for 1KR-FE, 1NR-FE

      • *2: for 1ND-TV

  2. FUNCTIONS OF COMPONENTS

    Item Function
    Steering lock actuator assembly Includes motor, lock bar, and lock and unlock position sensors. Activated by steering lock ECU.
    Steering lock ECU

    Included in steering lock actuator assembly. Activates steering lock motor based on permission signals from power management control ECU*1 (power source control ECU*2) and certification ECU.

    Detects steering lock and unlock positions and transmits status to other ECUs.

    Power management control ECU*1

    Power source control ECU*2

    		 Permits steering lock ECU to supply power to activate motor. Power management control ECU*1 (power source control ECU*2) and certification ECU permit engine start after receiving unlock signal from steering lock ECU.
    Certification ECU Orders steering lock ECU to lock or unlock steering lock. Power management control ECU*1 (power source control ECU*2) and certification ECU permit engine start after receiving unlock signal from steering lock ECU.
    IG2 relay Controlled by power management control ECU*1 or power source control ECU*2. Sends IG signals to steering lock ECU.
    ID code box Transmits command to set or cancel immobiliser to ECM based on permission signals from certification ECU.

    • *1: for 1KR-FE, 1NR-FE

    • *2: for 1ND-TV

  3. WARNING FUNCTION OF ENGINE SWITCH INDICATOR

    A0117N8E10

    1. The power management control ECU*1 or power source control ECU*2 blinks the LED indicator of the engine switch when any of the following problems occur in the system.


      • *1: for 1KR-FE, 1NR-FE

      • *2: for 1ND-TV

      Detection Item Indicator Light Blink Pattern Indication Status Countermeasure
      Steering lock release malfunction

      • Blinks green at 1-second intervals

      • Goes off 15 seconds after blinking starts

      		 Motor operates to release steering lock, but steering lock cannot be released (e.g. lock bar stuck in steering column). Push engine switch while turning steering wheel right and left.
      Malfunction in entry and start system

      • Blinks amber at 2-second intervals

      • Goes off 15 seconds after engine switch turned off while blinking

      • Short in devices for activating motor.

      • Problem in steering lock ECU or power management control ECU*1 (power source control ECU*2).

      Troubleshoot by following How to Proceed with Troubleshooting Click here.