ANTI-LOCK BRAKE SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    A01SJ68C07
    *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
    3 (GL1)*1 Deceleration sensor signal input
    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 (EXI2)*2 L4 detection switch (Transfer shift actuator assembly) input
    12 (+BS) Solenoid relay power supply
    13 (GND2) Pump motor ground
    14 (CANL) CAN communication line L
    15 (GGND)*1 Deceleration sensor ground
    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
    22 (SP1) Speed signal output for speedometer
    24 (+BM) Motor relay power supply
    25 (CANH) CAN communication line H
    26 (VGS)*1 Deceleration sensor power supply
    28 (STP) Stop light switch input
    31 (EXI)*2 4WD detection switch (Transfer shift actuator assembly) input*3
    A.D.D. position switch (Differential motor actuator assembly) input*4
    32 (TS) Signal check input
    34 (IG1) Skid control ECU (Brake actuator assembly) power supply

    • *1: for 4WD and Pre-Runner

    • *2: for 4WD

    • *3: w/o A.D.D. Actuator

    • *4: w/ A.D.D. Actuator

  2. TERMINAL INSPECTION


    1. Disconnect the A3 connector and measure the voltage or resistance on the wire harness side.

      A01SGQHC13
      *a

      Front view of wire harness connector

      (to Skid Control ECU [Brake Actuator Assembly])

      		 - -

      Tech Tips

      Voltage cannot be measured with the connector connected to the skid control (brake actuator assembly) as the connector is watertight.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A3-1 (GND1) - Body ground W-B - Body ground Skid control ECU (Brake actuator assembly) ground Always Below 1 Ω
      A3-8 (EXI2) - Body ground*1 G - Body ground L4 detection switch (Transfer shift actuator assembly) input

      • Ignition switch ON

      • 4WD control switch (Transfer position switch) not set to L4

      		 11 to 14 V
      A3-12 (+BS) - Body ground B - Body ground Solenoid relay power supply Always 11 to 14 V
      A3-13 (GND2) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
      A3-24 (+BM) - Body ground R - Body ground Motor relay power supply Always 11 to 14 V
      A3-28 (STP) - Body ground G - Body ground Stop light switch input Brake pedal depressed 8 to 14 V
      Brake pedal released Below 1.5 V
      A3-31 (EXI) - Body ground*1

      L - Body ground*4

      W - Body ground*5

      		 4WD detection switch (Transfer shift actuator assembly) input*2

      • Ignition switch ON

      • 4WD control switch (Transfer position switch) set to H2

      		 11 to 14 V
      A.D.D. position switch (Differential motor actuator assembly) signal input*3
      A3-34 (IG1) - Body ground L - Body ground Skid control ECU (Brake actuator assembly) power supply Ignition switch ON 11 to 14 V

      • *1: for 4WD

      • *2: w/o A.D.D. Actuator

      • *3: w/ A.D.D. Actuator

      • *4: for 5L-E

      • *5: except 5L-E