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Terminals Of Ecu

  1. SKID CONTROL ECU 
    Fig 1: Identifying Skid Control ECU Connector Terminal
    G05649490Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SKID CONTROL ECU REFERENCE CHART

    Terminal No. (Symbol) Terminal Description
    1 (GND) Skid control ECU ground
    2 (STP0) Stop light control relay (BRK NO. 1) signal input
    3 (PKB2) Parking brake switch signal input
    4 (CANL) Vehicle CAN communication line
    5 (CANH) Vehicle CAN communication line
    6 (EXI2) A.D.D. detection switch signal input (4WD)
    7 (D/G) Diagnosis tester communication line
    8 (BZ) Buzzer drive input
    9 (IG1) IG1 power supply
    10 (TS) Sensor check input
    11 (STP2) Stop light switch and stop light control relay (BRK NO. 1) signal input
    12 No pin
    13 (CSW) VSC OFF switch signal input
    14 (SP1) Vehicle speed pulse signal output
    15 No pin
    16 (+BM) Motor relay power supply
    17 (BST) Brake booster solenoid ground
    18 (PIM) Pedal stroke sensor (Delta S sensor) input line
    19 (GYAW) Yaw rate sensor ground
    20 No pin
    21 (E3) Pedal stroke sensor (Delta S sensor) ground
    22 (VCP) Pedal stroke sensor (Delta S sensor) power source
    23 No pin
    24 (PSNO) Brake booster micro switch (Normal Open) signal input
    25 (PSNC) Brake booster micro switch (Normal Close) signal input
    26 (VYS) Yaw rate sensor power source
    27 (STS) Brake booster micro switch power source
    28 No pin
    29 (SS2) Yaw rate sensor signal line (CANL)
    30 (SS1) Yaw rate sensor signal line (CANH)
    31 (BSTP) Brake booster solenoid power source
    32 No pin
    33 (FL-) Front wheel LH speed signal line
    34 (FL+) Front wheel LH speed signal line
    35 (BSW) Stop light control relay (BRK NO. 2) drive input
    36 (RR+) Rear wheel RH speed signal line
    37 (RR-) Rear wheel RH speed signal line
    38 No pin
    39 (PSOO) Brake booster micro switch signal output
    40 No pin
    41 (STP) Stop light switch signal input
    42 (RL-) Rear wheel LH speed signal line
    43 (RL+) Rear wheel LH speed signal line
    44 No pin
    45 (FR+) Front wheel RH speed signal line
    46 (FR-) Front wheel RH speed signal line
    47 (+BS) Solenoid relay power supply
  2. CHECK SKID CONTROL ECU 
    Fig 2: Identifying Front View Of Wire Harness Connector
    G05649491Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the A19 ECU connector.
    2. Measure the voltage or resistance according to the value(s) in the table below.
      VOLTAGE SPECIFICATION

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A19-1 (GND1) - Body ground W-B - Body ground Skid control ECU ground Always Below 1 Ω
      A19-2 (STP0) - Body ground BR - Body ground Stop light control relay (BRK NO. 1) signal input Ignition switch ON 11 to 14 V
      A19-3 (PKB2) - Body ground LG - Body ground Parking brake switch signal input Parking brake switch ON Below 1 Ω
      A19-4 (CANL) - A19-5 (CANH) W - B CAN BUS Always 54 to 69 Ω
      A19-5 (CANH) - A19-4 (CANL) B - W CAN BUS Always 54 to 69 Ω
      A19-6 (EXI2) - Body ground GR - Body ground A.D.D. detection switch signal input (4WD) A.D.D. detection switch ON Below 1 Ω
      A19-7 (D/G) - H19-7 (SIL) P - O Diagnosis tester communication line Always Below 1 Ω
      A19-8 (BZ) - Body ground Y - Body ground Buzzer drive input Ignition switch ON 11 to 14 V
      A19-9 (IG1) - Body ground V - Body ground IG1 power supply Ignition switch ON 11 to 14 V
      A19-10 (TS) - H19-12 (TS) W - G Sensor check input Always Below 1 Ω
      A19-11 (STP2) - Body ground GR - Body ground Stop light switch and stop light control relay (BRK NO. 1) signal input Brake pedal depressed 8 to 14 V
      Brake pedal released Below 1.5 V
      A19-13 (CSW) - Body ground P - Body ground VSC OFF switch signal input VSC OFF switch ON Below 1 Ω
      A19-14 (SP1) - Body ground Y - Body ground Vehicle speed pulse signal output Always 11 to 14 V
      A19-16 (+BM) - Body ground L - Body ground Motor relay power supply Always 11 to 14 V
      A19-17 (BST) - A19-31 (BSTP) B - V Brake booster solenoid ground Always 1 to 2 Ω
      A19-18 (PIM) - A19-21 (E3) R - O Pedal stroke sensor (Delta S sensor) input line Always 4 to 8 kΩ
      A19-19 (GYAW) - O12-5 (GYAW)*1 P - G Yaw rate sensor ground Always Below 1 Ω
      A19-19 (GYAW) - O11-5 (GYAW)*2
      A19-21 (E3) - Body ground O - Body ground Pedal stroke sensor (Delta S sensor) ground Always 10 kΩ or higher
      A19-22 (VCP) - A19-21 (E3) G - O Pedal stroke sensor (Delta S sensor) power source Always 150 to 200 Ω
      A19-24 (PSNO) - A19-27 (STS) LG - SB Brake booster micro switch (Normal Open) signal input Brake pedal depressed Below 1 Ω
      A19-25 (PSNC) - A19-27 (STS) L - SB Brake booster micro switch (Normal Close) signal input Always Below 1 Ω
      A19-26 (VYS) - O12-3 (VYS)*1 R-R Yaw rate sensor power source Always Below 1 Ω
      A19-26 (VYS) - O11-3 (VYS)*2
      A19-27 (STS) - A19-24 (PSNO) SB - L Brake booster micro switch power source Always Below 1 Ω
      A19-29 (SS2) - O12-1 (YAW2)*1 W - W Yaw rate sensor signal line (CANL) Always Below 1 Ω
      A19-29 (SS2) - O11-1 (YAW2)*2
      A19-30 (SS1) - O12-2 (YAW1)*1 B - B Yaw rate sensor signal line (CANH) Always Below 1 Ω
      A19-30 (SS1) - O11-2 (YAW1)*2
      A19-31 (BSTP) - A19-17 (BST) V - B Brake booster solenoid power source Always 1 to 2 Ω
      A19-33 (FL-) - z4-1 LG - B Front wheel LH speed signal line Always Below 1 Ω
      A19-34 (FL+) - z4-2 V - W Front wheel LH speed signal line Always Below 1 Ω
      A19-35 (BSW) - Body ground L - Body ground Stop light control relay (BRK NO. 2) drive input Ignition switch ON 11 to 14 V
      A19-36 (RR+) - z5-2 B - W Rear wheel RH speed signal line Always Below 1 Ω
      A19-37 (RR-) - z5-1 W - B Rear wheel RH speed signal line Always Below 1 Ω
      A19-39 (PSOO) - A27-36 (STV) SB - SB Brake booster micro switch signal line Always Below 1 Ω
      A19-41 (STP) - Body ground Y - Body ground Stop light switch signal input Brake pedal depressed 8 to 14 V
      Brake pedal released Below 1.5 V
      A19-42 (RL-) - z6-1 P - B Rear wheel LH speed signal line Always Below 1 Ω
      A19-43 (RL+) - z6-2 L - W Rear wheel LH speed signal line Always Below 1 Ω
      A19-45 (FR+) - z3-2 O-W Front wheel RH speed signal line Always Below 1 Ω
      A19-46 (FR-) - z3-1 G - B Front wheel RH speed signal line Always Below 1 Ω
      A19-47 (+BS) - Body ground R - Body ground Solenoid relay power supply Always 11 to 14 V
      HINT:
      • Voltage cannot be measured with the connector connected to the skid control ECU as the connector is watertight.
      • *1: for 4WD
      • *2: for 2WD
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