ANTI-LOCK BRAKE SYSTEM TERMINALS OF ECU


  1. Terminals of ECU

    A01VE5WE01
    Text in Illustration
    *a

    Component without harness connected

    (Skid Control ECU (Brake Actuator Assembly))
    Terminal No. (Symbol) Terminal Description
    1 (+BS) Solenoid relay power supply
    2 (RL-) Rear LH wheel speed signal input
    3 (RL+) Rear LH wheel speed sensor power supply
    4 - (Not used)
    5 (FR+) Front RH wheel speed sensor power supply
    6 (FR-) Front RH wheel speed signal input
    7 (LVL2) Brake fluid level warning switch input
    8 (FL-) Front LH wheel speed signal input
    9 (FL+) Front LH wheel speed sensor power supply
    10 - (Not used)
    11 (RR+) Rear RH wheel speed sensor power supply
    12 (RR-) Rear RH wheel speed signal input
    13 (GND1) Pump motor ground
    14 (+BM) Motor relay input
    15 - (Not used)
    16 - (Not used)
    17 (STP) Stop light switch assembly input
    18 - (Not used)
    19 - (Not used)
    20 (IG1) ECU power supply
    21 (CANL) CAN communication line Low
    22 - (Not used)
    23 (CANH) CAN communication line High
    24 (SP1) Speed signal output for combination meter
    25 - (Not used)
    26 (GND2) Skid control ECU ground

  2. Terminal inspection


    1. A01VJVYE02
      Text in Illustration
      *A for LHD with CVT, and RHD
      *B for LHD except CVT
      *a

      Front view of wire harness connector

      (to Skid Control ECU (Brake Actuator Assembly))

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

      Tech Tips

      The voltage cannot be measured with the connector connected to the skid control ECU as the connector is water resistant.

      Standard (for LHD with CVT, and RHD)
      Terminal No. (Symbol) Wiring Color Terminal Description Conditions Specified Conditions
      A78-1 (+BS) - Body ground W - Body ground Solenoid relay power supply Always 11 to 14 V
      A78-13 (GND1) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
      A78-14 (+BM) - Body ground B - Body ground Motor relay input Always Below 1 Ω
      A78-17 (STP) - Body ground P - Body ground Stop light switch assembly input

      Stop light switch assembly ON → OFF

      (Brake pedal depressed → released)

      		 8 to 14 V → Below 1.5 V
      A78-20 (IG1) - Body ground L - Body ground ECU power supply Ignition switch ON 11 to 14 V
      A78-26 (GND2) - Body ground W-B - Body ground Skid control ECU ground Skid control ECU ground Below 1 Ω
      Standard (for LHD except CVT)
      Terminal No. (Symbol) Wiring Color Terminal Description Conditions Specified Conditions
      A79-1 (+BS) - Body ground W - Body ground Solenoid relay power supply Always 11 to 14 V
      A79-13 (GND1) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
      A79-14 (+BM) - Body ground B - Body ground Motor relay input Always Below 1 Ω
      A79-17 (STP) - Body ground P - Body ground Stop light switch assembly input

      Stop light switch assembly ON → OFF

      (Brake pedal depressed → released)

      		 8 to 14 V → Below 1.5 V
      A79-20 (IG1) - Body ground L - Body ground ECU power supply Ignition switch ON 11 to 14 V
      A79-26 (GND2) - Body ground W-B - Body ground Skid control ECU ground Skid control ECU ground Below 1 Ω