CAN COMMUNICATION SYSTEM (w/ VSC) TERMINALS OF ECU

Tech Tips

Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.


  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL


    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      Note


      • Before measuring the resistance, leave the vehicle for at least 1 minute and do not operate the ignition switch, any switches or any doors. If doors need to be opened in order to check connectors, open the doors and leave them open.

      • When disconnecting the cable from the negative (-) battery terminal, some systems need to be initialized after the cable is reconnected Click here.

  2. JUNCTION CONNECTOR


    1. NO. 1 JUNCTION CONNECTOR

      A01DZCZE06
      No. 1 Junction Connector Wiring Color Connect to
      J54-4 (CANH) B No. 2 junction connector
      J54-1 (CANL) W
      J54-12 (CANH) B ECM
      J54-6 (CANL) W
      J54-13 (CANH) R Skid control ECU
      J54-7 (CANL) W

    2. NO. 2 JUNCTION CONNECTOR

      A01E1V9E02
      No. 2 Junction Connector Wiring Color Connect to
      J59-5 (CANH) B No. 1 junction connector
      J59-16 (CANL) W
      J59-6 (CANH) B No. 3 junction connector
      J59-17 (CANL) W
      J59-7 (CANH) R Yaw rate sensor
      J59-18 (CANL) W

    3. NO. 3 JUNCTION CONNECTOR

      A01DXYSE03
      Wiring Color
      Junction Connector A Side Color (CANH Side) Color (CANL Side)
      No. 2 junction connector and ECM (J50) B W
      Steering angle sensor (J51) W R
      Wiring Color
      Junction Connector B Side Color (CANH Side) Color (CANL Side)
      DLC3 (J49) W R

  3. TERMINALS OF CONNECTORS FOR JUNCTION CONNECTOR

    A01DXCL
    Terminal No. Symbol
    1 CANL
    2 CANH

  4. CHECK DLC3

    A01DXSEE26

    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.

    2. Measure the resistance according to the value(s) in the table below.

      Terminal No. (Symbols) Wiring Color Switch Condition Specified Condition
      D1-6 (CANH) - D1-14 (CANL) W - R Ignition switch off 54 to 69 Ω
      D1-6 (CANH) - D1-4 (CG) W - G Ignition switch off 200 Ω or higher
      D1-14 (CANL) - D1-4 (CG) R - G Ignition switch off 200 Ω or higher
      D1-6 (CANH) - D1-16 (BAT) W - G Ignition switch off 6 kΩ or higher
      D1-14 (CANL) - D1-16 (BAT) R - G Ignition switch off 6 kΩ or higher

  5. CHECK SKID CONTROL ECU

    A01DVATE05

    1. Disconnect the S35 ECU connector.

    2. Measure the resistance according to the value(s) in the table below.

      Terminal No. (Symbols) Wiring Color Switch Condition Specified Condition
      S35-25 (CANH) - S35-14 (CANL) B - W Ignition switch off 54 to 69 Ω
      S35-25 (CANH) - S35-1 (GND1) B - W-B Ignition switch off 200 Ω or higher
      S35-14 (CANL) - S35-1 (GND1) W - W-B Ignition switch off 200 Ω or higher
      S35-25 (CANH) - S35-12 (+BS) B - W-R Ignition switch off 6 kΩ or higher
      S35-14 (CANL) - S35-12 (+BS) W - W-R Ignition switch off 6 kΩ or higher

  6. CHECK ECM (for 1KD-FTV, 2KD-FTV [w/ DPF])

    A01E31UE10

    1. Disconnect the E25, E30 and E31 ECM connectors.

    2. Measure the resistance according to the value(s) in the table below.

      Terminal No. (Symbols) Wiring Color Switch Condition Specified Condition
      E30-35 (CANH) - E30-36 (CANL) B - W Ignition switch off 108 to 132 Ω
      E30-35 (CANH) - E25-1 (E1) B - BR Ignition switch off 200 Ω or higher
      E30-36 (CANL) - E25-1 (E1) W - BR Ignition switch off 200 Ω or higher
      E30-35 (CANH) - E31-23 (BATT) B - L Ignition switch off 6 kΩ or higher
      E30-36 (CANL) - E31-23 (BATT) W - L Ignition switch off 6 kΩ or higher

  7. CHECK ECM (for 1KD-FTV, 2KD-FTV [w/o DPF])

    A01E12WE03

    1. Disconnect the E6 and E7 ECM connectors.

    2. Measure the resistance according to the value(s) in the table below.

      Terminal No. (Symbols) Wiring Color Switch Condition Specified Condition
      E6-24 (CANH) - E6-23 (CANL) B - W Ignition switch off 108 to 132 Ω
      E6-24 (CANH) - E7-7 (E1) B - BR Ignition switch off 200 Ω or higher
      E6-23 (CANL) - E7-7 (E1) W - BR Ignition switch off 200 Ω or higher
      E6-24 (CANH) - E6-2 (BATT) B - L Ignition switch off 6 kΩ or higher
      E6-23 (CANL) - E6-2 (BATT) W - L Ignition switch off 6 kΩ or higher

  8. CHECK ECM (for 1GR-FE)

    A01DZUCE35

    1. Disconnect the E13, E14 and E17 ECM connectors.

    2. Measure the resistance according to the value(s) in the table below.

      Terminal No. (Symbols) Wiring Color Switch Condition Specified Condition
      E13-33 (CANH) - E13-34 (CANL) B - W Ignition switch off 108 to 132 Ω
      E13-33 (CANH) - E17-1 (E1) B - BR Ignition switch off 200 Ω or higher
      E13-34 (CANL) - E17-1 (E1) W - BR Ignition switch off 200 Ω or higher
      E13-33 (CANH) - E14-3 (BATT) B - L Ignition switch off 6 kΩ or higher
      E13-34 (CANL) - E14-3 (BATT) W - L Ignition switch off 6 kΩ or higher

  9. CHECK STEERING ANGLE SENSOR

    A01E2QCE04

    1. Disconnect the S37 sensor connector.

    2. Measure the resistance according to the value(s) in the table below.

      Terminal No. (Symbols) Wiring Color Switch Condition Specified Condition
      S37-4 (CANH) - S37-3 (CANL) W - R Ignition switch off 54 to 69 Ω
      S37-4 (CANH) - S37-2 (ESS) W - W-B Ignition switch off 200 Ω or higher
      S37-3 (CANL) - S37-2 (ESS) R - W-B Ignition switch off 200 Ω or higher
      S37-4 (CANH) - S37-6 (BAT) W - B Ignition switch off 6 kΩ or higher
      S37-3 (CANL) - S37-6 (BAT) R - B Ignition switch off 6 kΩ or higher

  10. CHECK YAW RATE SENSOR

    A01DYUNE06

    1. Disconnect the Y1 sensor connector.

    2. Measure the resistance according to the value(s) in the table below.

      Terminal No. (Symbols) Wiring Color Switch Condition Specified Condition
      Y1-3 (CANH) - Y1-2 (CANL) B - W Ignition switch off 54 to 69 Ω
      Y1-3 (CANH) - Y1-1 (GND) B - W-B Ignition switch off 200 Ω or higher
      Y1-2 (CANL) - Y1-1 (GND) W - W-B Ignition switch off 200 Ω or higher
      Y1-3 (CANH) - D1-16 (BAT) B - G Ignition switch off 6 kΩ or higher
      Y1-2 (CANL) - D1-16 (BAT) W - G Ignition switch off 6 kΩ or higher