STEERING LOCK SYSTEM TERMINALS OF ECU


  1. STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)


    1. Disconnect the F61 steering lock actuator assembly (steering lock ECU) connector.

      A01VKRHE02

    2. Measure the voltage and resistance according to the value(s) in the table below.

      Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      F61-1 (GND) - Body ground - W-B - Body ground Ground*3 Always Below 1 Ω -
      F61-3 (IGE) - F61-1 (GND) Input L - W-B Steering lock motor activation command signal (motor activation command signal sent from certification ECU (smart key ECU assembly))

      Any door opened when conditions below met, and then steering lock motor activated:


      • Shift lever is in P*1 or N*2

      • Steering lock unlocked in advance by carrying key and turning engine switch on (IG)

      • After above condition met, engine switch turned off

      		 Pulse generation (see waveform)

        Entry & Start

      • Power Supply Short

      • Unlock Request Receive

      • Lock Request Receive
      F61-4 (SLP1) - F61-1 (GND) Output P - W-B Steering lock bar position signal (output signal from steering unlock sensor) Steering locked → unlocked 11 to 14 V → Below 1.2 V

        Entry & Start

      • Push Start Error

      • Sensor Value
      F61-5 (LIN) - F61-1 (GND) Input/Output BE - W-B LIN communication line - -

        Entry & Start

      • Steering Lock Start Cond
      F61-6 (IG2) - F61-1 (GND) Input SB - W-B Power source mode signal (IG2 power supply input for entire steering lock actuator assembly)*3 Engine switch off → engine switch on (IG) Below 1 V → 11 to 14 V

        Entry & Start

      • Ignition Switch
      F61-7 (B) - Body ground Input GR - Body ground Power source*3 Always 11 to 14 V -

      • *1: for CVT

      • *2: for Multi-Mode Manual Transaxle

      • *3: When there is a problem with the power source input, the certification ECU (smart key ECU assembly) may store DTC B2786.

      Note

      There is 1 motor and 2 sensors built into the steering lock actuator assembly.

      Tech Tips


      • When taking measurements when the lock motor is stopped, it is not necessary to perform any operations.

      • In order to take measurements when the lock motor is operating, perform either of the following operations:


        • To unlock the steering, carry the key and turn the engine switch on (ACC) or on (IG) while the shift lever is in P*1 or N*2.

        • To lock the steering, turn the engine switch off with the shift lever is in P*1 or N*2, and then open a door.


          • *1: for CVT

          • *2: for Multi-Mode Manual Transaxle


      1. A01VHGLE02
        Text in Illustration
        *a Steering lock motor not operating
        *b Steering lock motor operating

        Waveform

        Item Content
        Tester Connection F61-3 (IGE) - F61-1 (GND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Vehicle Condition Steering lock motor not operating → Steering lock motor operating → Steering lock motor not operating