VEHICLE STABILITY CONTROL SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    A017EPDE01
    Terminal No. (Symbols) 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
    22 (STP2) Stop light control relay input
    24 (+BM) Motor relay power supply
    25 (CANH) CAN communication line H
    26 (HDCS) (*1) Downhill assist control switch input
    27 (FSW+) Brake pedal load sensing switch input
    29 (PKB) Parking brake 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): for 4WD

  2. TERMINAL INSPECTION


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

      A017C1ME05

      Tech Tips

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

      Standard:
      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      A24-1 (GND1) - Body ground W-B - Body ground Skid control ECU ground Always Below 1 Ω
      A24-2 (STP) - Body ground L - Body ground Stop light switch input

      Stop light switch ON → OFF

      (Brake pedal depressed → released)

      8 to 14 V

      → Below 1.5 V
      A24-12 (+BS) - Body ground R - Body ground Solenoid relay power supply Always 11 to 14 V
      A24-13 (GND2) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
      A24-22 (STP2) - Body ground L - Body ground Stop light control relay input

      Stop light switch ON → OFF

      (Brake pedal depressed → released)

      8 to 14 V

      → Below 1.5 V
      A24-24 (+BM) - Body ground B - Body ground Motor relay power supply Always 11 to 14 V
      A24-26 (HDCS) (*1) - Body ground W - Body ground Downhill assist control switch input Downhill assist control switch is pushed in → released Below 1 Ω → 10 kΩ or higher
      A24-27 (FSW+) - Body ground 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
      A24-29 (PKB) - Body ground V - Body ground Parking brake switch input Ignition switch on (IG), parking brake switch OFF → ON Below 1 Ω → 10 kΩ or higher
      A24-30 (CSW) - Body ground G - Body ground VSC OFF switch input VSC OFF switch held ON → OFF (Released) Below 1 Ω → 10 kΩ or higher
      A24-31 (STPO) - Body ground P - Body ground Stop light control relay output Ignition switch on (IG) 11 to 14 V
      A24-34 (IG1) - Body ground BE - Body ground ECU power supply Ignition switch on (IG) 11 to 14 V

      (*1): for 4WD