ANTI-LOCK BRAKE SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    A015BCCE09
    Text in Illustration
    *a

    Component without harness connected

    (Skid Control ECU [Master Cylinder Solenoid])

    		 - -
    Terminal No. (Symbol) Terminal Description
    1 (GND1) Skid control ECU (Master cylinder solenoid) ground
    2 (+BM1) Power supply for motor
    3 (FR+) Front speed sensor RH power supply output
    4 (FL-) Front speed sensor LH input
    5 (RR+) Rear speed sensor RH power supply output
    6 (RL-) Rear speed sensor LH input
    7 (STP) Stop light switch
    11 (CANH) CAN communication terminal H
    12 (SP1) Speedometer signal
    14 (P) Rear differential lock detection switch
    17 (FR-) Front speed sensor RH input
    18 (FL+) Front speed sensor LH power supply output
    19 (RR-) Rear speed sensor RH input
    20 (RL+) Rear speed sensor LH power supply output
    22 (VGS) Deceleration sensor power supply output
    23 (GGND) Deceleration sensor ground
    24 (TS) Sensor test terminal (Signal check switch)
    25 (CANL) CAN communication terminal L
    27 (EXI) Center differential lock switch
    31 (+BS) Power supply for solenoid
    32 (GND2) Skid control ECU (Master cylinder solenoid) ground
    39 (GL1) Deceleration sensor input
    41 (LBL) Brake fluid level warning switch
    46 (IG1) IG1 power supply
    A015DIPE04
    Text in Illustration
    *a

    Component without harness connected

    (Skid Control ECU [Master Cylinder Solenoid])

    		 - -
    Terminal No. (Symbol) Terminal Description
    1 (IG2) IG2 power supply
    2 (+BM2) Power supply for motor
    4 (GND3) Skid control ECU (Master cylinder solenoid) ground

  2. TERMINAL INSPECTION

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

    Tech Tips

    Voltage cannot be measured with the connector connected to the skid control ECU (master cylinder solenoid) as the connector is watertight.

    A0158DYE06
    Text in Illustration
    *a

    Front view of wire harness connector

    (to Skid Control ECU [Master Cylinder Solenoid])

    		 - -
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    A24-2 (+BM1) - Body ground B

    Power supply for motor

    (From battery)

    		 Always 11 to 14 V
    A24-7 (STP) - Body ground R Stop light switch Brake pedal depressed → released 8 to 14 V → Below 1.5 V
    A24-31 (+BS) - Body ground W

    Power supply for solenoid

    (From battery)

    		 Always 11 to 14 V
    A24-41 (LBL) - Body ground

    P

    BR-Y*

    		 Brake fluid level warning switch (Brake master cylinder reservoir sub-assembly) Brake fluid level +/-5 mm (+/-0.197 in.) from the minimum level → maximum level Below 1 Ω → 1.9 to 2.1 kΩ
    A24-46 (IG1) - Body ground G IG1 power supply Ignition switch off → ON Below 1 V → 11 to 14 V
    A25-1 (IG2) - Body ground B IG2 power supply Ignition switch off → ON Below 1 V → 11 to 14 V
    A25-2 (+BM2) - Body ground B

    Power supply for motor

    (From battery)

    		 Always 11 to 14 V
    A24-1 (GND1) - Body ground W-B Ground Always Below 1 Ω
    A24-32 (GND2) - Body ground W-B Ground Always Below 1 Ω
    A25-4 (GND3) - Body ground W-B Ground Always Below 1 Ω

    • *: GRJ200L-GNANKC