VEHICLE STABILITY CONTROL SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    A005I93E09
    Text in Illustration
    *a

    Component without harness connected

    (Brake actuator assembly (Skid control ECU))
    Terminal No. (Symbol) Terminal Description
    1 (GND1) Skid control ECU ground
    2 (STP) Stop light switch input
    4 (RL-) Rear wheel speed LH (-) signal input
    5 (RL+) Rear wheel speed LH (+) power supply output
    6 (FR-) Front wheel speed RH (-) signal input
    7 (FR+) Front wheel speed RH (+) power supply output
    11 (SP1) Speed signal output for speedometer
    12 (+BS) Solenoid relay power supply
    13 (GND2) Pump motor ground
    14 (CANL) CAN communication line L
    16 (RR-) Rear wheel speed RH (-) signal input
    17 (RR+) Rear wheel speed RH (+) power supply output
    18 (FL-) Front wheel speed LH (-) signal input
    19 (FL+) Front wheel speed LH (+) power supply output
    24 (BM) Motor relay power supply
    25 (CANH) CAN communication line H
    30 (CSW) VSC OFF switch input
    34 (IG1) ECU power supply

  2. TERMINAL INSPECTION


    1. A005I1IE01
      Text in Illustration
      *A except LHD with CVT
      *B for LHD with CVT
      *a

      Front view of wire harness connector

      (to Brake actuator assembly (Skid control ECU))

      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 brake actuator assembly (skid control ECU) as the connector is watertight.

      Standard: (except LHD with CVT)
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A54-1 (GND1) - Body ground W-B - Body ground Skid control ECU ground Always Below 1 Ω
      A54-2 (STP) - Body ground P - Body ground Stop light switch input

      Stop light switch ON → OFF

      (Brake pedal depressed → released)

      7.5 to 14 V

      → Below 1.5 V
      A54-12 (+BS) - Body ground W - Body ground Solenoid relay power supply Always 11 to 14 V
      A54-13 (GND2) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
      A54-24 (BM) - Body ground B - Body ground Motor relay power supply Always 11 to 14 V
      A54-25 (CANH) - A54-14 (CANL) G - W CAN bus Ignition switch off 54 to 69 Ω
      A54-30 (CSW) - Body ground B - Body ground VSC OFF switch input VSC OFF switch held ON → OFF (Not pressed) Below 25 Ω → 10 kΩ or higher
      A54-34 (IG1) - Body ground L - Body ground ECU power supply Ignition switch ON 11 to 14 V
      Standard: (for LHD with CVT)
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A56-1 (GND1) - Body ground W-B - Body ground Skid control ECU ground Always Below 1 Ω
      A56-2 (STP) - Body ground P - Body ground Stop light switch input

      Stop light switch ON → OFF

      (Brake pedal depressed → released)

      7.5 to 14 V

      → Below 1.5 V
      A56-12 (+BS) - Body ground W - Body ground Solenoid relay power supply Always 11 to 14 V
      A56-13 (GND2) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
      A56-24 (BM) - Body ground B - Body ground Motor relay power supply Always 11 to 14 V
      A56-25 (CANH) - A56-14 (CANL) G - W CAN bus Ignition switch off 54 to 69 Ω
      A56-30 (CSW) - Body ground B - Body ground VSC OFF switch input VSC OFF switch held ON → OFF (Not pressed) Below 25 Ω → 10 kΩ or higher
      A56-34 (IG1) - Body ground L - Body ground ECU power supply Ignition switch ON 11 to 14 V