VEHICLE STABILITY CONTROL SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    A005P40C01
    *a

    Component without harness connected

    (Skid Control ECU (Brake Actuator Assembly))

    		 - -
    Terminal No. (Symbol) Terminal Description
    1 (+BM) ABS motor relay power supply
    2 -
    3 -
    4 - (Not used)
    5 (CANH) CAN communication line H
    6 (CSW) VSC OFF switch input
    7 (FL-) Front wheel speed LH (-) signal input
    8 - (Not used)
    9 - (Not used)
    10 (STPO) Stop light control relay output
    11 - (Not used)
    12 -
    13 -
    14 (GND2) Pump motor ground
    15 -
    16 -
    17 (FSW+)* Brake pedal load sensing switch input
    18 - (Not used)
    19 (CANL) CAN communication line L
    20 - (Not used)
    21 (FR+) Front wheel speed RH (+) signal input
    22 (RR+) Rear wheel speed RH (+) signal input
    23 (RL-) Rear wheel speed LH (-) signal input
    24 (FL+) Front wheel speed LH (+) signal input
    25 - (Not used)
    26 (FR-) Front wheel speed RH (-) signal input
    27 - (Not used)
    28 - (Not used)
    29 - (Not used)
    30 (+BS) ABS solenoid relay power supply
    31 -
    32 -
    33 -
    34 (SP1) Speed signal output for speedometer
    35 -
    36 (IG1) IG1 power source input
    37 (RR-) Rear wheel speed RH (-) signal input
    38 - (Not used)
    39 (RL+) Rear wheel speed LH (+) signal input
    40 - (Not used)
    41 - (Not used)
    42 (STP) Stop light control relay input
    43 (HZRI) Brake hold switch input
    44 (STP2) Stop light switch input
    45 -
    46 (GND1) Skid control ECU ground

    • *: w/ Brake Pedal Load Sensing Switch

  2. TERMINAL INSPECTION


    1. A005PMEC22
      *a Front view of wire harness connector (to Skid Control ECU (Brake Actuator Assembly))

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

      Tech Tips

      The voltage cannot be measured with the connector connected to the skid control ECU (brake actuator assembly) because the connector is watertight.

      Standard
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A42-1 (+BM) - Body ground L - Body ground ABS motor relay power supply Always 11 to 14 V
      A42-6 (CSW) - Body ground R - Body ground VSC OFF switch input VSC OFF switch ON → OFF (Pressed → not pressed) Below 1 Ω → 10 kΩ or higher
      A42-10 (STPO) - Body ground R - Body ground Stop light control relay (stop light switch assembly) output Ignition switch ON 11 to 14 V
      A42-14 (GND2) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
      A42-17 (FSW+) - Body ground*1 GR - 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
      A42-30 (+BS) - Body ground W - Body ground ABS solenoid relay power supply Always 11 to 14 V
      A42-36 (IG1) - Body ground B - Body ground IG1 power source input Ignition switch ON 11 to 14 V
      A42-42 (STP) - Body ground SB - Body ground Stop light control relay (stop light switch assembly) output Stop light switch ON → OFF (Brake pedal depressed → released) 11 to 14 V* → Below 1.5 V
      A42-43 (HZRI) - Body ground B - Body ground Brake hold switch input Brake hold switch ON → OFF (Pressed → not pressed) Below 1 Ω → 10 kΩ or higher
      A42-44 (STP2) - Body ground L - Body ground Stop light switch input Stop light switch assembly ON → OFF (Brake pedal depressed → released) 11 to 14 V* → Below 1.5 V
      A42-46 (GND1) - Body ground W-B - Body ground Skid control ECU ground Always Below 1 Ω

      • *: w/ Brake Pedal Load Sensing Switch

      Tech Tips

      *: The standard voltage value varies depending on the +BS terminal voltage value. The standard voltage is 85% of the +BS terminal voltage.