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Home >> Toyota >> 2018 >> Camry LE >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Vehicle Stability Control System (W/O Electric Parking Brake System) - Diagnostics - Introduction (1 Of 2) (Except Hybrid) >> VEHICLE STABILITY CONTROL SYSTEM (w/o Electric Parking Brake System) >> Terminals Of Ecu [06/2017 - 10/2020] >> Terminals Of Ecu [06/2017 - 10/2020]

Terminals Of Ecu [06/2017 - 10/2020]

  1. TERMINALS OF ECU 
    GTY756033Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Component without harness connected
    (Skid Control ECU (Brake Actuator Assembly))    		 - -
    Terminal No. (Symbol) Terminal Description
    1 (+BM) ABS motor relay power supply
    2 (SP1) Speed signal output for speedometer
    3 (STPO)* Stop light control relay (stop light switch assembly) output
    4 (FR-) Front wheel speed RH (-) signal input
    5 -
    6 -
    7 -
    8 (FL-) Front wheel speed LH (-) signal input
    9 (CSW) VSC OFF switch input
    10 -
    11 -
    12 -
    13 (GND2) Pump motor ground
    14 (CANL) CAN communication line L
    15 -
    16 (FR+) Front wheel speed RH (+) signal input
    17 (RR+) Rear wheel speed RH (+) signal input
    18 (RL-) Rear wheel speed LH (-) signal input
    19 (FL+) Front wheel speed LH (+) signal input
    20 -
    21 -
    22 (STP2)* Stop light control relay (stop light switch assembly) input
    23 -
    24 -
    25 (+BS) ABS solenoid relay power supply
    26 (CANH) CAN communication line H
    27 -
    28 (IG1) IG1 power source input
    29 (RR-) Rear wheel speed RH (-) signal input
    30 (STP) Stop light switch assembly input
    31 (RL+) Rear wheel speed LH (+) signal input
    32 -
    33 -
    34 -
    35 -
    36 -
    37 -
    38 (GND1) Skid control ECU (brake actuator assembly) ground
    1. *: w/ Pre-collision System
  2. TERMINAL INSPECTION 
    1. Disconnect the connector and measure the voltage and resistance on the wire harness side.
      GTY752977Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Skid Control ECU (Brake Actuator Assembly))      		 - -

      HINT: 

      The voltage cannot be measured with the connector connected to the skid control ECU (brake actuator assembly) because the connector is watertight.

      STANDARD

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A33-1 (+BM) - Body ground B - Body ground ABS motor relay power supply Always 11 to 14 V
      A33-3 (STPO) - Body ground*2 L - Body ground Stop light control relay (stop light switch assembly) output Always 11 to 14 V
      A33-9 (CSW) - Body ground P - Body ground VSC OFF switch input VSC OFF switch on → off (Pressed → not pressed) Below 1 Ω → 10 kΩ or higher
      A33-13 (GND2) - Body ground W-B - Body ground Pump motor ground Always Below 1 Ω
      A33-22 (STP2) - Body ground*2 R - Body ground Stop light control relay (stop light switch assembly) input Stop light switch assembly on → off (Brake pedal depressed → released) (+BS x 0.85) to 14 V*1 → Below 1.5 V
      A33-25 (+BS) - Body ground L - Body ground ABS solenoid relay power supply Always 11 to 14 V
      A33-28 (IG1) - Body ground B - Body ground IG1 power source input Ignition switch ON 11 to 14 V
      A33-30 (STP) - Body ground GR - Body ground Stop light switch assembly input Stop light switch assembly on → off (Brake pedal depressed → released) (+BS x 0.85) to 14 V*1 → Below 1.5 V
      A33-38 (GND1) - Body ground W-B - Body ground Skid control ECU (brake actuator assembly) ground Always Below 1 Ω
      1. *1: The minimum voltage value varies depending on the +BS terminal voltage value. The minimum voltage is 85% or more of the +BS terminal voltage.
      2. *2: w/ Pre-collision System
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