STEERING LOCK SYSTEM TERMINALS OF ECU

  1. TERMINAL INSPECTION

    B118684C16

    *a

    Component without harness connected

    (Steering Lock ECU (Steering Lock Actuator Assembly))

    -

    -

    1. 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

      E47-1 (GND) - Body ground

      -

      W-B - Body ground

      Ground*2

      Always

      Below 1 Ω

      -

      E47-3 (IGE) - E47-1 (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 in N*1

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

      • After above conditions met, engine switch turned off

      Pulse generation (see waveform)

      • Entry&Start

      • Power Supply Short

      • Unlock Request Receive

      • Lock Request Receive

      E47-4 (SLP1) - E47-1 (GND)

      Output

      P - W-B

      Steering lock bar position signal (output signal from steering unlock sensor)

      Steering locked → unlocked

      11 to 14 V → Below 1.5 V

      • Entry&Start

      • Sensor Value

      E47-5 (LIN) - E47-1 (GND)

      Input/Output

      BE - W-B

      LIN communication line

      -

      -

      • Entry&Start

      • Steering Lock Start Cond

      E47-6 (IG2) - E47-1 (GND)

      Input

      B - W-B

      Power source mode signal (IG2 power supply input for entire steering lock actuator assembly)*2

      Engine switch off → engine switch on (IG)

      Below 1 V → 11 to 14 V

      -

      E47-7 (B) - Body ground

      Input

      V - Body ground

      Power source*2

      Always

      11 to 14 V

      -

      • *1: for Multi-Mode Manual Transaxle

        *2: 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.

      Tip:

      • 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).

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

          • *: for Multi-Mode Manual Transaxle

      1. C221561C19

        *a

        Steering Lock Motor not Operating

        *b

        Steering Lock Motor Operating

        Waveform

        Item

        Content

        Tester Connection

        E47-3 (IGE) - E47-1 (GND)

        Tool Setting

        2 V/DIV., 200 ms./DIV.

        Vehicle Condition

        Steering lock motor not operating → Operating → Not operating