ANTI-LOCK BRAKE SYSTEM(for Type B) TERMINALS OF ECU


  1. TERMINALS OF ECU

    A01M2JKC01
    *a

    Component without harness connected

    (Skid Control ECU (Brake Actuator Assembly))

    		 - -
    Terminal No. (Symbol) Terminal Description
    1 (GND1) Skid control ECU ground
    2 - (Not used)
    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 - (Not used)
    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 (SP1) Speed signal output for speedometer
    23 - (Not used)
    24 (+BM) ABS motor relay power supply
    25 (CANH) CAN communication line H
    26 - (Not used)
    27 - (Not used)
    28 (STP) Stop light switch assembly input
    29 - (Not used)
    30 - (Not used)
    31 - (Not used)
    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.

      A01LUW1C03
      *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
      A124-1 (GND1) - Body ground W-B - Body ground Skid control ECU ground Always Below 1 Ω
      A124-12 (+BS) - Body ground W - Body ground ABS solenoid relay power supply Always 11 to 14 V
      A124-13 (GND2) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
      A124-22 (SP1) - Body ground B - Body ground Speed signal output for speedometer Ignition switch ON 11 to 14 V
      A124-24 (+BM) - Body ground L - Body ground ABS motor relay power supply Always 11 to 14 V
      A124-28 (STP) - Body ground L - Body ground Stop light switch assembly input

      Stop light switch ON → OFF

      (Brake pedal depressed → released)

      		 11 to 14 V → Below 1.5 V
      A124-34 (IG1) - Body ground L - Body ground IG1 power source input Ignition switch ON 11 to 14 V