LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2019 >> BRZ Limited, Automatic Trans >> Repair and Diagnosis >> Steering >> Steering Column >> Steering Lock System >> ECM Terminal Arrangement
April 5, 2026: LEMON Manuals is launched! Read the announcement.

ECM Terminal Arrangement

  1. Steering lock actuator ASSY (Steering lock ECM)
    G12591256Courtesy of SUBARU OF AMERICA, INC.
    1. Measure the voltage, resistance, and waveform.
      Terminal No. (Terminal symbol) Input/Output Terminal description Inspection conditions Standard value Related data monitor
      D59-1 (GND) ← →Chassis ground - GND Always Less than 1 Ω -
      D59-3 (SLR+) ← →D59-1 (GND) Input Steering lock motor drive permission signal When all of the following conditions are met and the doors are closed →open, the steering lock motor is driven.
      • The steering lock is unlocked
      • IG & ACC OFF
      • The shifter is in the P position (Transmission A/T)
      		 Pulse generation (waveform 1) Check
      • Motor power supply short circuit history
      • Unlock request reception state
      • Lock request reception state
      D59-4 (SLP) ← →D59-1 (GND) Output Steering lock bar position Steering lock →ering unlock 11 to 14 V → V or less Check
      • Push button start malfunction history
      • Sensor malfunction history (Steering lock)
      D59-5 (LIN) ← →D59-1 (GND) Input/Output LIN communication line - - Check
      • Communication allowed state (Steering lock)
      D59-6 (IGN1) ← → D59-1 (GND) Input IG2 input power supply IG OFF →IG ON Less than 1 V →11 to 14 V Check
      • IG SW
      D59-7 (B) ← → Chassis ground Input Power supply Always 11 to 14 V -
      CAUTION: The steering lock actuator ASSY (Steering lock ECM) is incorporated with one motor and two sensors.
      NOTE:
      • When performing measurements while the steering lock actuator motor is stopped, measurements can be made without any special operation.
      • When performing measurements while the steering lock actuator motor is running, the following operations are necessary.
        • To unlock the steering, bring the electrical key transmitter SUB-ASSY (Electronic key) into the vehicle and turn the ignition to ACC ON or IG ON.
        • To lock the steering, open a door while the vehicle is set to IG OFF & ACC OFF, and the shifter is in the P position (Transmission A/T).
  2. Oscilloscope waveform.
    1. Waveform 1
      Item Contents
      Measuring terminal D59-3 (SLR+) ← →D59-1 (GND)
      Equipment setting 2 V/DIV, 200 ms/DIV
      Measuring condition Steering lock actuator motor stopped →Steering lock actuator motor running →Steering lock actuator motor stopped
      G12591257Courtesy of SUBARU OF AMERICA, INC.
scientia non olet · About LEMON Manuals