ANTI-LOCK BRAKE SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    A01CIPZE10
    Text in Illustration
    *a

    Component without harness connected

    (Skid Control ECU (Brake Actuator Assembly))
    Terminal No. (Symbol) Terminal Description
    B9-1 (GND1) Skid control ECU (brake actuator assembly) ground
    B9-2 (E4) Skid control vacuum sensor RH ground
    B9-3 (PIM) Skid control vacuum sensor RH input
    B9-4 (RL-) Rear wheel speed LH (-) signal input
    B9-5 (RL+) Rear wheel speed LH (+) power supply output
    B9-6 (FR+) Front wheel speed RH (+) signal input
    B9-7 (FR-) Front wheel speed RH (-) signal input
    B9-10 (VCP2) Skid control vacuum sensor LH power supply output
    B9-11 (PIM2) Skid control vacuum sensor LH input
    B9-12 (+BS) Solenoid relay power supply
    B9-13 (GND2) Pump motor ground
    B9-14 (CANL) CAN communication line L
    B9-15 (CH) CAN communication line H
    B9-16 (RR+) Rear wheel speed RH (+) power supply output
    B9-17 (RR-) Rear wheel speed RH (-) signal input
    B9-18 (FL-) Front wheel speed LH (-) signal input
    B9-19 (FL+) Front wheel speed LH (+) signal input
    B9-20 (E3) Skid control vacuum sensor LH ground
    B9-21 (SP1) Speed signal output for speedometer
    B9-23 (STP1) Stop light switch input
    B9-24 (+BM) Motor relay power supply
    B9-25 (CANH) CAN communication line H
    B9-26 (CL-) CAN communication line L
    B9-30 (VCP) Skid control vacuum sensor RH power supply output
    B9-33 (TS) Sensor check activation input
    B9-34 (IG) ECU power supply

  2. TERMINAL INSPECTION


    1. A01CIK8E12
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Skid Control ECU (Brake Actuator Assembly))

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

      Tech Tips

      Voltage cannot be measured with the connector connected to the skid control ECU (brake actuator assembly) as the connector is watertight.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      B9-1 (GND1) - Body ground W-B Skid control ECU (brake actuator assembly) ground Always Below 1 Ω
      B9-12 (+BS) - Body ground G Solenoid relay power supply Always 20 to 28 V
      B9-13 (GND2) - Body ground W-B Pump motor ground Always Below 1 Ω
      B9-23 (STP1) - Body ground R Stop light switch input

      Stop light switch on → off

      (Brake pedal depressed → released)

      20 to 28 V

      → Below 1.5 V
      B9-24 (+BM) - Body ground R Motor relay power supply Always 20 to 28 V
      B9-34 (IG) - Body ground G Skid control ECU (brake actuator assembly) power supply Ignition switch ON 20 to 28 V