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Terminals Of Ecu

NOTE: This information describes the standard CAN values for all CAN related components.
  1. JUNCTION CONNECTOR 
    Fig 1: Identifying Junction Connector Terminals
    G04066215Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Wiring color 

    TERMINALS SPECIFICATION

    Junction Connector B side Color (CAN-H Side) Color (CAN-L Side)
    ECM (J31) B W
    Gateway ECU (J32) B W
    Translate ECU (J33) R W
    DLC3 (J34) L W

    HINT:

    • The connectors connected to the junction connector can be distinguished by the colors of the bus lines and the connecting side of the connector.
    • The connectors can be connected to any terminals on the same side.
  2. TERMINALS OF CONNECTORS FOR JUNCTION CONNECTOR 
    TERMINAL SPECIFICATION

    Terminal Terminal Symbol
    1 CANH
    2 CANL
    Fig 2: Identifying Junction Connector Terminals
    G04066216Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. CHECK DLC3 
    1. Measure the resistance of the connector.
    Fig 3: Identifying DLC3 Connector Terminal
    G04066217Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL NO AND SPECIFIED CONDITION CHART

    Symbols (Terminal No.) Wiring Color Condition Specified Condition
    CANH (D8-6) - CANL (D8-14) L - W Ignition switch OFF 54 to 67 Ω
    CANH (D8-6) - CG (D8-4) L - W-B Ignition switch OFF 3 kΩ or higher
    CANL (D8-14) - CG (D8-4) W - W-B Ignition switch OFF 3 kΩ or higher
    CANH (D8-6) - BAT (D8-16) L - B-W Ignition switch OFF 1 MΩ or higher
    CANL (D8-14) - BAT (D8-16) W - B-W Ignition switch OFF 1 MΩ or higher
  4. CHECK ECM 
    Fig 4: Identifying ECM Connector Terminal
    G04066218Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance of the connector.
      TERMINAL NO AND SPECIFIED CONDITION CHART

      Symbols (Terminal No.) Wiring Color Condition Specified Condition
      CANH (E9-33) - CANL (E9-34) B - W Ignition switch OFF 54 to 67 Ω
    2. Disconnect the E8, E9 and E10 ECM connectors.
    3. Measure the resistance of the wire harness side connectors.
    TERMINAL NO AND SPECIFIED CONDITION CHART

    Symbols (Terminal No.) Wiring Color Condition Specified Condition
    CANH (E9-33) - CANL (E9-34) B - W Ignition switch OFF 108 to 132 Ω
    CANH (E9-33) - E01 (E8-7) B - W-B Ignition switch OFF 3 kΩ or higher
    CANL (E9-34) - E01 (E8-7) W - W-B Ignition switch OFF 3 kΩ or higher
    CANH (E9-33) - BATT (E10-3) B - B-R Ignition switch OFF 1 MΩ or higher
    CANL (E9-34) - BATT (E10-3) W - B-R Ignition switch OFF 1 MΩ or higher
  5. CHECK GATEWAY ECU 
    Fig 5: Identifying Gateway ECU Connector Terminal
    G04066219Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance of the connector.
      TERMINAL NO AND SPECIFIED CONDITION CHART

      Symbols (Terminal No.) Wiring Color Condition Specified Condition
      CA1H (G5-17) - CA1L (G5-18) B - W Ignition switch OFF 54 to 67 Ω
    2. Disconnect the G5 ECU connector.
    3. Measure the resistance of the wire harness side connector.
    TERMINAL NO AND SPECIFIED CONDITION CHART

    Symbols (Terminal No.) Wiring Color Condition Specified Condition
    CA1H (G5-17) - CA1L (G5-18) B - W Ignition switch OFF 108 to 132 Ω
    CA1H (G5-17) - GND (G5-24) B - W-B Ignition switch OFF 3 kΩ or higher
    CA1L (G5-18) - GND (G5-24) W - W-B Ignition switch OFF 3 kΩ or higher
    CA1H (G5-17) - BATT (G5-10) B - L-W Ignition switch OFF 1 MΩ or higher
    CA1L (G5-18) - BATT (G5-10) W - L-W Ignition switch OFF 1 MΩ or higher
  6. CHECK TRANSLATE ECU 
    Fig 6: Identifying Translate ECU Connector Terminal
    G04066220Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the T39 ECU connector.
    2. Measure the resistance of the wire harness side connectors.
    TERMINAL NO AND SPECIFIED CONDITION CHART

    Symbols (Terminal No.) Wiring Color Condition Specified Condition
    CANH (T39-7) - CANL (T39-10) R - W Ignition switch OFF 54 to 67 Ω
    CANH (T39-7) - GND (T39-40) R - W-B Ignition switch OFF 3 kΩ or higher
    CANL (T39-10) - GND (T39-40) W - W-B Ignition switch OFF 3 kΩ or higher
    CANH (T39-7) - BAT (D8-16) R - B-W Ignition switch OFF 1 MΩ or higher
    CANL (T39-10) - BAT (D8-16) W - B-W Ignition switch OFF 1 MΩ or higher
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