VEHICLE STABILITY CONTROL SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    A019PAVE03
    Text in Illustration
    *1

    Component without harness connected

    (Skid Control ECU)

    		 - -
    Terminal No. (Symbol) Terminal Description
    1 (GND1) Skid control ECU ground
    2 (STP1) 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
    8 (EXO)*1 Stop light control relay 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
    21 (BZ)*2 Skid control buzzer output
    22 (STP2) Stop light control relay input
    24 (BM) Motor relay power supply
    25 (CANH) CAN communication line H
    27 (FSW+) Brake pedal load sensing switch input
    30 (CSW) VSC OFF switch input
    31 (STPO) Stop light control relay output
    33 (TS) Sensor check input
    34 (IG1) ECU power supply

    *1: w/ Emergency brake signal

    *2: w/ Dynamic radar cruise control system

  2. TERMINAL INSPECTION


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

      A019L0RE19
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Skid Control ECU)

      		 - -

      Tech Tips

      Voltage cannot be measured with the connectors connected to the skid control ECU as the connectors are watertight.

      Standard
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A44-1 (GND1) - Body ground W-B - Body ground Skid control ECU ground Always Below 1 Ω
      A44-2 (STP1) - Body ground B - Body ground Stop light switch input

      Stop light switch ON → OFF

      (Brake pedal depressed → released)

      8 to 14 V

      → Below 1.5 V
      A44-8 (EXO)*1 - Body ground R - Body ground Stop light control relay output Engine switch on (IG) 11 to 14 V
      A44-12 (+BS) - Body ground L - Body ground Solenoid relay power supply Always 11 to 14 V
      A44-13 (GND2) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
      A44-21 (BZ)*2 - Body ground BE - Body ground Skid control buzzer output Engine switch on (IG), buzzer not sounding 6 to 10 V
      A44-22 (STP2) - Body ground V - Body ground Stop light control relay input

      Stop light switch ON → OFF

      (Brake pedal depressed → released)

      8 to 14 V

      → Below 1.5 V
      A44-24 (BM) - Body ground R - Body ground Motor relay power supply Always 11 to 14 V
      A44-27 (FSW+) - Body ground LG - 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
      A44-30 (CSW) - Body ground B - Body ground VSC OFF switch input VSC OFF switch held ON → OFF (Released) Below 25 Ω → 10 kΩ or higher
      A44-31 (STPO) - Body ground V - Body ground Stop light control relay output Engine switch on (IG) 11 to 14 V
      A44-34 (IG1) - Body ground BE - Body ground ECU power supply Engine switch on (IG) 11 to 14 V

      *1: w/ Emergency brake signal

      *2: w/ Dynamic radar cruise control system