VEHICLE STABILITY CONTROL SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    A018HFMC02
    *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 - (Not used)
    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 - (Not used)
    22 (STP2)*1 Stop light control relay (STOP LP 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 (HDCS)*2 Downhill assist control switch input
    30 (CSW) VSC OFF switch input
    31 (STPO)*1 Stop light control relay (STOP LP relay) output
    32 - (Not used)
    33 - (Not used)
    34 (IG1) IG1 power source input

    *1: w/ Downhill Assist Control or Dynamic Radar Cruise Control

    *2: for AWD

  2. TERMINAL INSPECTION


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

      A018H8IC07
      *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
      A47-1 (GND1) - Body ground W - Body ground Skid control ECU (Brake actuator assembly) ground Always Below 1 Ω
      A47-2 (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
      A47-11 (SP1) - Body ground LG - Body ground Speed signal output for speedometer Ignition switch ON 11 to 14 V
      A47-12 (+BS) - Body ground L - Body ground ABS solenoid relay power supply Always 11 to 14 V
      A47-13 (GND2) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
      A47-22 (STP2) - Body ground*1 G - Body ground Stop light control relay (STOP LP relay) input Stop light switch assembly ON → OFF (Brake pedal depressed → released) 8 to 14 V → Below 1.5 V
      A47-24 (+BM) - Body ground R - Body ground ABS motor relay power supply Always 11 to 14 V
      A47-27 (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
      A47-29 (HDCS) - Body ground*2 G - Body ground Downhill assist control switch input Downhill assist control switch is pushed in → released Below 1 Ω → 10 kΩ or higher
      A47-30 (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
      A47-31 (STPO) - Body ground*1 GR - Body ground Stop light control relay (STOP LP relay) output Ignition switch ON 11 to 14 V
      A47-34 (IG1) - Body ground LG - Body ground IG1 power source input Ignition switch ON 11 to 14 V

      *1: w/ Downhill Assist Control or Dynamic Radar Cruise Control

      *2: for AWD