VEHICLE STABILITY CONTROL SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    A01FEZWE12
    Text in Illustration
    *a

    Component without harness connected

    (Skid Control ECU [Brake Actuator Assembly])

    		 - -
    Terminal No. (Symbol) Terminal Description
    1 (GND1) Skid control ECU ground
    2 (STP) Stop light switch input
    3 (CA2L) CAN communication line L
    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 No. 2 integration relay output (Emergency brake signal 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
    15 (CA2H) CAN communication line H
    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) No. 2 integration 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) No. 2 integration relay output
    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.

      A01FIPWE37
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Skid Control ECU [Brake Actuator Assembly])

      		 - -

      Tech Tips

      Voltage cannot be measured with the connectors connected to the skid control ECU (brake actuator assembly) as the connectors are watertight.

      Standard
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A13-1 (GND1) - Body ground W-B - Body ground Skid control ECU ground Always Below 1 Ω
      A13-2 (STP) - Body ground R - Body ground Stop light switch input

      Stop light switch ON → OFF

      (Brake pedal depressed → released)

      8 to 14 V

      → Below 1.5 V
      A13-12 (+BS) - Body ground R - Body ground Solenoid relay power supply Always 11 to 14 V
      A13-13 (GND2) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
      A13-22 (STP2) - Body ground B - Body ground No. 2 integration relay input

      Stop light switch ON → OFF

      (Brake pedal depressed → released)

      8 to 14 V

      → Below 1.5 V
      A13-24 (BM) - Body ground W - Body ground Motor relay power supply Always 11 to 14 V
      A13-27 (FSW+) - Body ground B - 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
      A13-30 (CSW) - Body ground L - Body ground VSC OFF switch input VSC OFF switch held ON → OFF (Released) Below 1 Ω → 10 kΩ or higher
      A13-31 (STPO) - Body ground GR - Body ground No. 2 integration relay output Engine switch on (IG) 11 to 14 V
      A13-34 (IG1) - Body ground L - Body ground ECU power supply Engine switch on (IG) 11 to 14 V