VEHICLE STABILITY CONTROL SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    A01EJLTE02
    Text in Illustration
    *1

    Component without harness connected

    (Brake Actuator (Skid Control ECU))
    Terminal No. (Symbol) Terminal Description
    1 (GND2) Pump motor ground
    2 (+BM) Motor relay power supply
    3 (+BS) Solenoid relay power supply
    4 (GND1) Skid control ECU ground
    5 (FL-) Front wheel speed LH (-) signal input
    6 (RL+) Rear wheel speed LH (+) signal input
    8 (RR+) Rear wheel speed RH (+) signal input
    9 (FR+) Front wheel speed RH (+) signal input
    10 (FR-) Front wheel speed RH (-) signal input
    11 (D/G) Diagnosis tester communication line
    13 (STP2) Stop light control relay input
    14 (CANL) CAN communication line L
    16 (TS) Sensor check input
    17 (CSW) VSC OFF switch input
    20 (FSW+) Brake pedal load sensing switch input
    26 (FL+) Front wheel speed LH (+) signal input
    27 (RL-) Rear wheel speed LH (-) signal input
    28 (IG1) ECU power supply
    29 (RR-) Rear wheel speed RH (-) signal input
    30 (STP) Stop light switch input
    33 (SP1) Speed signal output for speedometer
    35 (CANH) CAN communication line H
    39 (STP0) Stop light control relay output

  2. TERMINAL INSPECTION


    1. Disconnect the connector and measure the voltage and resistance on the wire harness side.

      A01EJD5E07
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Brake Actuator (Skid Control ECU))

      Tech Tips

      Voltage cannot be measured with the connector connected to the skid control ECU because the connector is watertight.

      Standard
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A42-1 (GND2) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
      A42-2 (+BM) - Body ground Y - Body ground Motor relay power supply Always 11 to 14 V
      A42-3 (+BS) - Body ground GR - Body ground Solenoid relay power supply Always 11 to 14 V
      A42-4 (GND1) - Body ground W - Body ground Skid control ECU ground Always Below 1 Ω
      A42-13 (STP2) - Body ground R - Body ground Stop light control relay input Stop light switch ON → OFF (Brake pedal depressed → released) 8 to 14 V → Below 1.5 V
      A42-17 (CSW) - Body ground LG - Body ground VSC OFF switch input VSC OFF switch held ON → OFF (Not pressed) Below 1 Ω → 10 kΩ or higher
      A42-20 (FSW+) - Body ground R - Body ground Brake pedal load sensing switch input Brake pedal load sensing switch OFF → ON (Brake pedal depressed → released) 950 to 1050 Ω → 203 to 223 Ω
      A42-28 (IG1) - Body ground GR - Body ground ECU power supply Ignition switch ON 11 to 14 V
      A42-30 (STP) - Body ground P - Body ground Stop light switch input Stop light switch ON → OFF (Brake pedal depressed → released) 8 to 14 V → Below 1.5 V
      A42-39 (STP0) - Body ground BR - Body ground Stop light control relay output Ignition switch ON 11 to 14 V