VEHICLE STABILITY CONTROL SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    A01QAOHC23
    *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 (CA2L) CAN communication line 2 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) Emergency brake signal output
    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 (CA2H) CAN communication line 2 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
    20 - (Not used)
    21 - (Not used)
    22 (STP2) Integration No. 1 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) Integration No. 1 relay output
    32 - (Not used)
    33 - (Not used)
    34 (IG1) IG1 power source input

  2. TERMINAL INSPECTION


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

      A01QD85C09
      *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
      A9-1 (GND1) - Body ground W-B - Body ground Skid control ECU (Brake actuator assembly) ground Always Below 1 Ω
      A9-2 (STP) - Body ground R - Body ground Stop light switch assembly input

      Stop light switch assembly ON → OFF

      (Brake pedal depressed → released)

      		 8 to 14 V → Below 1.5 V
      A9-11 (SP1) - Body ground LG - Body ground Speed signal output for speedometer Engine switch on (IG) 11 to 14 V
      A9-12 (+BS) - Body ground R - Body ground ABS solenoid relay power supply Always 11 to 14 V
      A9-13 (GND2) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
      A9-22 (STP2) - Body ground GR - Body ground Integration No. 1 relay input Stop light switch assembly ON → OFF (Brake pedal depressed → released) 8 to 14 V → Below 1.5 V
      A9-24 (BM) - Body ground W - Body ground ABS motor relay power supply Always 11 to 14 V
      A9-30 (CSW) - Body ground R - Body ground VSC OFF switch (Integration control and panel assembly) input VSC OFF switch (Integration control and panel assembly) held ON → OFF (Not pressed) Below 1 Ω → 10 kΩ or higher
      A9-31 (STPO) - Body ground GR - Body ground Integration No. 1 relay output Engine switch on (IG) 11 to 14 V
      A9-34 (IG1) - Body ground L - Body ground IG1 power source input Engine switch on (IG) 11 to 14 V