CAN COMMUNICATION SYSTEM TERMINALS OF ECU

Note


  • Turn the ignition switch off before measuring the resistances of the CAN main wire and the CAN branch wire.

  • After the ignition switch is turned off, check that the light reminder warning system is not in operation.

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

    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. JUNCTION CONNECTOR


    1. A0137N2E01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to CAN Junction Connector)

      CAN Junction Connector

      Wiring Color
      D-CAN Junction Connector Terminal No. (Symbol) Wiring Color
      Steering sensor (CAN-H) C42-10 (CANH) B
      Steering sensor (CAN-L) C42-4 (CANL) W
      DLC 3 (CAN-H) C42-7 (CANH) B
      DLC 3 (CAN-L) C42-1 (CANL) W
    2. A0137N2E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to CAN Junction Connector)

      CAN Junction Connector

      Wiring Color
      P-CAN Junction Connector Terminal No. (Symbol) Wiring Color
      ABS and traction actuator (skid control ECU) (CAN-H) A38-9 (CANH) B
      ABS and traction actuator (skid control ECU) (CAN-L) A38-3 (CANL) W
      Yaw rate sensor (CAN-H) A38-7 (CANH) B
      Yaw rate sensor (CAN-L) A38-1 (CANL) W
      ECM (CAN-H) A38-8 (CAN+) B
      ECM (CAN-L) A38-2 (CAN-) W
      Transmission control ECU (CAN-H) A38-10 (CAN+) B
      Transmission control ECU (CAN-L) A38-4 (CAN-) W

    3. Wiring diagram for identifying CAN junction connectors

      A0138EEE01

  2. ABS AND TRACTION ACTUATOR (SKID CONTROL ECU)

    A01364GE06
    Text in Illustration
    *a

    Front view of wire harness connector

    (to ABS and Traction Actuator (Skid Control ECU))

    		 - -

    1. Turn the ignition switch off.

    2. Disconnect the A41 ABS and traction actuator (skid control ECU) connector.

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

      Standard Resistance
      Terminal No. (Symbol) Wiring Color Switch Condition Specified Condition
      A41-35 (CANH) - A41-14 (CANL) B - W Ignition switch off 54 to 69 Ω
      A41-35 (CANH) - A41-4 (GND1) B - BR Ignition switch off 200 Ω or higher
      A41-14 (CANL) - A41-4 (GND1) W - BR Ignition switch off 200 Ω or higher
      A41-35 (CANH) - A41-3 (+BS) B - R Ignition switch off 6 kΩ or higher
      A41-14 (CANL) - A41-3 (+BS) W - R Ignition switch off 6 kΩ or higher

  3. STEERING SENSOR

    A0138ZPE01
    Text in Illustration
    *a

    Front view of wire harness connector

    (to Steering Sensor)

    1. Turn the ignition switch off.

    2. Disconnect the C43 steering sensor connector.

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

      Standard Resistance
      Terminal No. (Symbol) Wiring Color Switch Condition Specified Condition
      C43-10 (CANH) - C43-9 (CANL) B - W Ignition switch off 108 to 132 Ω
      C43-10 (CANH) - C43-2 (ESS) B - W-B Ignition switch off 200 Ω or higher
      C43-9 (CANL) - C43-2 (ESS) W - W-B Ignition switch off 200 Ω or higher
      C43-10 (CANH) - C43-3 (BAT) B - LG Ignition switch off 6 kΩ or higher
      C43-9 (CANL) - C43-3 (BAT) W - LG Ignition switch off 6 kΩ or higher

  4. YAW RATE SENSOR

    A01392IE05
    Text in Illustration
    *a

    Front view of wire harness connector

    (to Yaw Rate Sensor)
    *b Front view of DLC3

    1. Turn the ignition switch off.

    2. Disconnect the H25 yaw rate sensor connector.

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

      Standard Resistance
      Terminal No. (Symbol) Wiring Color Switch Condition Specified Condition
      H25-2 (CANH) - H25-3 (CANL) B - W Ignition switch off 54 to 69 Ω
      H25-2 (CANH) - C16-4 (CG) B - W-B Ignition switch off 200 Ω or higher
      H25-3 (CANL) - C16-4 (CG) W - W-B Ignition switch off 200 Ω or higher
      H25-2 (CANH) - C16-16 (BAT) B - BE Ignition switch off 6 kΩ or higher
      H25-3 (CANL) - C16-16 (BAT) W - BE Ignition switch off 6 kΩ or higher

  5. ECM

    A0136ABE01

    1. Turn the ignition switch off.

    2. Disconnect the B26 ECM connector.

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

      Standard Resistance
      Terminal No. (Symbol) Wiring Color Switch Condition Specified Condition
      B26-28 (CAN+) - B26-36 (CAN-) B - W Ignition switch off 108 to 132 Ω
      B26-28 (CAN+) - B26-1 (E1) B - W-B Ignition switch off 200 Ω or higher
      B26-36 (CAN-) - B26-1 (E1) W - W-B Ignition switch off 200 Ω or higher
      B26-28 (CAN+) - B26-22 (BATT) B - LG Ignition switch off 6 kΩ or higher
      B26-36 (CAN-) - B26-22 (BATT) W - LG Ignition switch off 6 kΩ or higher

  6. TRANSMISSION CONTROL ECU

    A0136YWE04
    Text in Illustration
    *a

    Rear view of wire harness connector

    (to Transmission Control ECU)

    Tech Tips

    For vehicle with multi-mode transaxle system only.


    1. Turn the ignition switch off.

    2. Disconnect the A27 and A28 transmission control ECU connectors.

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

      Standard Resistance
      Terminal No. (Symbol) Wiring Color Switch Condition Specified Condition
      A28-1 (CAN+) - A28-2 (CAN-) B - W Ignition switch off 54 to 69 Ω
      A28-1 (CAN+) - A27-6 (GND) B - W-B Ignition switch off 200 Ω or higher
      A28-2 (CAN-) - A27-6 (GND) W - W-B Ignition switch off 200 Ω or higher
      A28-1 (CAN+) - A27-1 (+B) B - B Ignition switch off 6 kΩ or higher
      A28-2 (CAN-) - A27-1 (+B) W - B Ignition switch off 6 kΩ or higher