VEHICLE STABILITY CONTROL SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    A002AZ7C06
    *a

    Component without harness connected

    (Skid Control ECU (Brake Actuator Assembly))

    		 - -
    Terminal No. (Symbol) Terminal Description
    1 (GND2) Pump motor ground
    2 - (Not used)
    3 - (Not used)
    4 - (Not used)
    5 (STP2) Stop light control relay (stop light switch assembly) input
    6 - (Not used)
    7 - (Not used)
    8 - (Not used)
    9 - (Not used)
    10 (CANL) CAN communication line L
    11 - (Not used)
    12 (IG1) IG1 power source input
    13 (BM) ABS motor relay power supply
    14 (SP1) Speed signal output for speedometer
    15 (RR-) Rear wheel speed RH (-) signal input
    16 (RR+) Rear wheel speed RH (+) power supply output
    17 (FL-) Front wheel speed LH (-) signal input
    18 (FL+) Front wheel speed LH (+) power supply output
    19 - (Not used)
    20 - (Not used)
    21 - (Not used)
    22 (CANH) CAN communication line H
    23 (FSW+) Brake pedal load sensing switch (brake pedal support assembly) input
    24 - (Not used)
    25 (GND1) Skid control ECU (brake actuator assembly) ground
    26 (STPO) Stop light control relay (stop light switch assembly) output
    27 (HDCS)* Downhill assist control switch input
    28 (RL-) Rear wheel speed LH (-) signal input
    29 (RL+) Rear wheel speed LH (+) power supply output
    30 (FR-) Front wheel speed RH (-) signal input
    31 (FR+) Front wheel speed RH (+) power supply output
    32 - (Not used)
    33 (CSW) VSC OFF switch input
    34 - (Not used)
    35 (STP) Stop light switch assembly input
    36 - (Not used)
    37 - (Not used)
    38 (+BS) ABS solenoid relay power supply

    *: for AWD

  2. TERMINAL INSPECTION


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

      A0029V7C31
      *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
      A86-1 (GND2) - Body ground W-B - Body ground Skid control ECU (brake actuator assembly) ground Always Below 1 Ω
      A86-5 (STP2) - Body ground G - Body ground Stop light control relay (stop light switch assembly) input Stop light switch assembly on → off (Brake pedal depressed → released) 8 to 14 V → Below 1.5 V
      A86-12 (IG1) - Body ground LG - Body ground IG1 power source input Ignition switch ON 11 to 14 V
      A86-13 (BM) - Body ground R - Body ground ABS motor relay power supply Always 11 to 14 V
      A86-14 (SP1) - Body ground LG - Body ground Speed signal output for speedometer Ignition switch ON 11 to 14 V
      A86-23 (FSW+) - Body ground R - Body ground Brake pedal load sensing switch (brake pedal support assembly) input Brake pedal load sensing switch (brake pedal support assembly) off → on (Brake pedal depressed → released) 950 to 1050 Ω → 203 to 223 Ω
      A86-25 (GND1) - Body ground W - Body ground Pump motor ground Always Below 1 Ω
      A86-26 (STPO) - Body ground GR - Body ground Stop light control relay (stop light switch assembly) output Ignition switch ON 11 to 14 V
      A86-27 (HDCS) - Body ground* G - Body ground Downhill assist control switch input Downhill assist control switch is pushed → released Below 1 Ω → 10 kΩ or higher
      A86-33 (CSW) - Body ground BE - Body ground VSC OFF switch input VSC OFF switch on → off (Pressed → not pressed) Below 1 Ω → 10 kΩ or higher
      A86-35 (STP) - Body ground L - 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
      A86-38 (+BS) - Body ground L - Body ground ABS solenoid relay power supply Always 11 to 14 V

      *: for AWD