VEHICLE STABILITY CONTROL SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    A01G9C2E11
    Text in Illustration
    *a

    Component without harness connected

    (Skid Control ECU (Brake Actuator Assembly))

    		 - -
    Terminal No. (Symbol) Terminal Description
    1 (GND1) Skid control ECU (Brake actuator assembly) ground
    2 (STP) Stop light switch assembly input
    3 - (Not used)
    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. 1 integration relay output (for emergency brake signal)
    9 - (Not used)
    10 - (Not used)
    11 (SP1) Speed signal output for speedometer
    12 (+BS) ABS solenoid relay power supply
    13 (GND2) Pump motor ground
    14 (CANL) CAN communication line L
    15 - (Not used)
    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
    20 - (Not used)
    21 (BZ)*2 Skid control buzzer assembly output
    22 (STP2)*1, 2 No. 1 integration relay input
    23 - (Not used)
    24 (+BM) ABS motor relay power supply
    25 (CANH) CAN communication line H
    26 - (Not used)
    27 (FSW+) Brake pedal load sensing switch (Brake pedal support assembly) input
    28 - (Not used)
    29 - (Not used)
    30 (CSW) VSC OFF switch (Integration control and panel assembly) input
    31 (STPO)*1, 2 No. 1 integration relay output
    32 - (Not used)
    33 - (Not used)
    34 (IG1) IG1 power source input

    *1: w/ Emergency Brake Signal

    *2: w/ Dynamic Radar Cruise Control

  2. TERMINAL INSPECTION


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

      A01G9GME03
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Skid Control ECU (Brake Actuator Assembly))

      		 - -

      Tech Tips

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

      Standard:
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A40-1 (GND1) - Body ground W-B - Body ground Skid control ECU (Brake actuator assembly) ground Always Below 1 Ω
      A40-2 (STP) - Body ground P - Body ground Stop light switch assembly input

      Stop light switch ON → OFF

      (Brake pedal depressed → released)

      		 11 to 14 V → Below 1.5 V
      A40-8 (EXO) - Body ground*1 V - Body ground No. 1 integration relay output (for emergency brake signal)

      Stop light switch ON → OFF

      (Brake pedal depressed → released)

      		 11 to 14 V → Below 1.5 V
      A40-11 (SP1) - Body ground L - Body ground Speed signal output for speedometer Engine switch on (IG) 11 to 14 V
      A40-12 (+BS) - Body ground L - Body ground ABS solenoid relay power supply Always 11 to 14 V
      A40-13 (GND2) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
      A40-21 (BZ) - Body ground*2 L - Body ground Skid control buzzer assembly output Engine switch on (IG), buzzer not sounding 11 to 14 V
      A40-22 (STP2) - Body ground*1, 2 P - Body ground No. 1 integration relay input

      Stop light switch ON → OFF

      (Brake pedal depressed → released)

      		 11 to 14 V → Below 1.5 V
      A40-24 (+BM) - Body ground G - Body ground ABS motor relay power supply Always 11 to 14 V
      A40-27 (FSW+) - Body ground L - Body ground Brake pedal load sensing switch (Brake pedal support assembly) input

      Brake pedal load sensing switch OFF → ON

      (Brake pedal depressed → released)

      		 950 to 1050 Ω → 203 to 223 Ω
      A40-30 (CSW) - Body ground R - Body ground VSC OFF switch (Integration control and panel assembly) input VSC OFF switch held ON → OFF (Not pressed) Below 1 Ω → 10 kΩ or higher
      A40-31 (STPO) - Body ground*1, 2 G - Body ground No. 1 integration relay output Engine switch on (IG) 11 to 14 V
      A40-34 (IG1) - Body ground V - Body ground IG1 power source input Engine switch on (IG) 11 to 14 V

      *1: w/ Emergency Brake Signal

      *2: w/ Dynamic Radar Cruise Control