ANTI-LOCK BRAKE SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    B001Z0ZE15
    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 assembly
    11 (CANH) CAN communication terminal H
    12 (SP1) Speedometer signal
    14 (P) Rear differential lock detection switch (No. 1 Transfer indicator 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
    27 (EXI) Center differential lock detection switch (Transfer shift actuator assembly)
    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 (Brake master cylinder reservoir sub-assembly)
    46 (IG1) IG1 power supply
    B001YMOE04
    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.

    B001YJ0E04
    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 assembly 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 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 V 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