ANTI-LOCK BRAKE SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    A005W11E01
    Text in Illustration
    *1

    Component without harness connected

    (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
    12 (HZRI) Hazard warning switch signal input
    13 (TS) Sensor check input
    14 (STP3) Stop light control relay output
    15 (CANL) CAN communication line L
    16 (FL+) Front wheel speed LH (+) signal input
    17 (RL-) Rear wheel speed LH (-) signal input
    18 (IG1) ECU power supply
    19 (RR-) Rear wheel speed RH (-) signal input
    20 (STP) Stop light switch input
    23 (SP1) Speed signal output for speedometer
    25 (STP2) Stop light control relay signal input
    26 (CANH) CAN communication line H

  2. TERMINAL INSPECTION


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

      A005T8FE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Skid Control ECU)

      Tech Tips

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

      Standard
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A41-1 (GND2) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
      A41-2 (+BM) - Body ground L - Body ground Motor relay power supply Always 11 to 14 V
      A41-3 (+BS) - Body ground W - Body ground Solenoid relay power supply Always 11 to 14 V
      A41-4 (GND1) - Body ground W-B - Body ground Skid control ECU ground Always Below 1 Ω
      A41-18 (IG1) - Body ground G - Body ground ECU power supply Ignition switch ON 11 to 14 V
      A41-20 (STP) - Body ground V - Body ground Stop light switch input

      Stop light switch on → off

      (Brake pedal depressed → released)

      8 to 14 V

      → Below 1.5 V
      A41-25 (STP2) - Body ground L - Body ground Stop light control relay signal input

      Stop light switch on → off

      (Brake pedal depressed → released)

      8 to 14 V

      → Below 1.5 V