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Terminals Of Ecu

  1. CHECK DLC3 
    1. Check the DLC3.
      1. Measure the resistance according to DLC3 CONNECTOR TERMINALS RESISTANCE SPECIFICATION  .
        Fig 1: Checking DLC3
        G03196926Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard: 

        DLC3 CONNECTOR TERMINALS RESISTANCE SPECIFICATION

        Symbols (Terminal No.) Terminal Description Condition Specified Condition
        CANH (D1-6) - CANL (D1-14) HIGH-level CAN bus line - LOW-level CAN bus line Ignition switch OFF 54 to 69 Ω
        CANH (D1-6) - BAT (D1-16) HIGH-level CAN bus line - Battery positive Ignition switch OFF 1 MΩ or higher
        CANL (D1-14) - BAT (D1-16) LOW-level CAN bus line - Battery positive Ignition switch OFF 1 MΩ or higher
        CANH (D1-6) - CG (D1-4) HIGH-level CAN bus line - Ground Ignition switch OFF 3 kΩ or higher
        CANL (D1-14) - CG (D1-4) LOW-level CAN bus line - Ground Ignition switch OFF 3 kΩ or higher
  2. CHECK SKID CONTROL ECU 
    1. Check the skid control ECU.
      1. Disconnect the S1 skid control ECU connector.
      2. Measure the resistance according to SKID CONTROL ECU  .
        Fig 2: Checking Skid Control (1 Of 2)
        G03196927Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard: 

        SKID CONTROL ECU (1 OF 2)

        Symbols (Terminal No.) Terminal Description Condition Specified Condition
        CANH (11) - CANL (25) HIGH-level CAN bus line - LOW-level CAN bus line Ignition switch OFF 108 to 132 Ω
        CANH (11) - GND1 (32) HIGH-level CAN bus line - Ground Ignition switch OFF 3 kΩ or higher
        CANL (25) - GND1 (32) LOW-level CAN bus line - Ground Ignition switch OFF 3 KΩ or higher
        CANH (11) -+ BS (31) HIGH-level CAN bus line - Battery positive Ignition switch OFF 1 MΩ or higher
        CANL (25)-+ BS (31) LOW-level CAN bus line - Battery positive Ignition switch OFF 1 MΩ or higher
    2. Check the wire harness of the skid control ECU.
      1. Disconnect the S1 skid control ECU connector.
      2. Measure the resistance according to SKID CONTROL ECU (2 OF 2)  .
        Fig 3: Checking Skid Control (2 Of 2)
        G03196928Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard: 

        SKID CONTROL ECU (2 OF 2)

        Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
        CANH (S1-11) - CANL (S1-25) B - W HIGH-level CAN bus line - LOW-level CAN bus line Ignition switch OFF 108 to 132 Ω
        CANH (S1-11) - GND1 (S1-32) B - W-B HIGH-level CAN bus line - Ground Ignition switch OFF 3 kΩ or higher
        CANL (S1-25) - GND1 (S1-32) W - W-B LOW-level CAN bus line - Ground Ignition switch OFF 3 kΩ or higher
        CANH (S1-11) -+ BS (S1-31) B- B HIGH-level CAN bus line - Battery positive Ignition switch OFF 1 MΩ or higher
        CANL (S1-25) -+ BS (S1-31) W- B LOW-level CAN bus line - Battery positive Ignition switch OFF 1 MΩ or higher
  3. CHECK STEERING SENSOR 
    1. Check the steering sensor.
      1. Disconnect the S15 steering sensor connector.
      2. Measure the resistance according to STEERING SENSOR  .
        Fig 4: Checking Steering Sensor (1 Of 2)
        G03196929Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard: 

        STEERING SENSOR (1 OF 2)

        Symbols (Terminal No.) Terminal Description Condition Specified Condition
        CANH (10) - CANL (9) HIGH-level CAN bus line - LOW-level CAN bus line Ignition switch OFF 108 to 132 Ω
        CANH (10) - ESS (2) HIGH-level CAN bus line - Ground Ignition switch OFF 3 kΩ or higher
        CANL (9) - ESS (2) LOW-level CAN bus line - Ground Ignition switch OFF 3 kΩ or higher
        CANH (10) - BAT (3) HIGH-level CAN bus line - Battery positive Ignition switch OFF 1 MΩ or higher
        CANL (9) - BAT (3) LOW-level CAN bus line - Battery positive Ignition switch OFF 1 MΩ or higher
    2. Check the wire harness of the steering sensor.
      1. Disconnect the S15 steering sensor connector.
      2. Measure the resistance according to STEERING SENSOR (2 OF 2)  .
        Fig 5: Checking Steering Sensor (2 Of 2)
        G03196930Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard: 

        STEERING SENSOR (2 OF 2)

        Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
        CANH (S15-10) - CANL (S15-9) B-W HIGH-level CAN bus line - LOW-level CAN bus line Ignition switch OFF 108 to 132 Ω
        CANH (S15-10) - ESS (S15-2) B - W-B HIGH-level CAN bus line - Ground Ignition switch OFF 3 kΩ or higher
        CANL (S15-9) - ESS (S15-2) W - W-B LOW-level CAN bus line - Ground Ignition switch OFF 3 kΩ or higher
        CANH (S15-10) - BAT (S15-3) B - W-R HIGH-level CAN bus line - Battery positive Ignition switch OFF 1 MΩ or higher
        CANL (S15-9) - BAT (S15-3) W - W-R LOW-level CAN bus line - Battery positive Ignition switch OFF 1 MΩ or higher
  4. CHECK YAW RATE SENSOR 
    1. Check the wire harness of the yaw rate sensor.
      1. Disconnect the Y1 yaw rate sensor connector.
      2. Measure the resistance according to YAW RATE SENSOR  .
        Fig 6: Checking Yaw Rate Sensor
        G03196931Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard: 

        YAW RATE SENSOR

        Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
        CANH (Y1-3) - CANL (Y1-2) B - W HIGH-level CAN bus line - LOW-level CAN bus line Ignition switch OFF 54 to 69 Ω
        CANH (Y1-3) - GND (Y1-1) B - W-B HIGH-level CAN bus line - Ground Ignition switch OFF 3 kΩ or higher
        CANL (Y1-2) - GND (Y1-1) W - W-B LOW-level CAN bus line - Ground Ignition switch OFF 3 kΩ or higher
        CANH (Y1-3) - BAT (D1-16) B - B-O HIGH-level CAN bus line - Battery positive Ignition switch OFF 1 MΩ or higher
        CANL (Y1-2) - BAT (D1-16) W - B-O LOW-level CAN bus line - Battery positive Ignition switch OFF 1 MΩ or higher
  5. CHECK J10 JUNCTION CONNECTOR 
    Fig 7: Identifying J10 Junction Connector Terminals
    G03196932Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the terminal arrangement and connection
      J10 JUNCTION CONNECTOR

      Symbols (Terminal No.) Connects to
      CANH (J10-E) Skid Control ECU (CANH)
      CANL (J10-B) Skid Control ECU (CANL)
      CANH (J10-E) Yaw Rate Sensor (CANH)
      CANL (J10-B) Yaw Rate Sensor (CANL)
      CANH (J10-E) Steering Sensor (CANH)
      CANL (J10-B) Steering Sensor (CANL)
      CANH (J10-E) DLC3 (CANH)
      CANL (J10-B) DLC3 (CANL)
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