CAN COMMUNICATION SYSTEM TERMINALS OF ECU

Note


  • After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

    Click here

  • Turn the power switch off before measuring the resistances between CAN main bus lines and between CAN branch lines.

  • Turn the power switch off before inspecting CAN bus lines for a ground short.

  • Before measuring the resistance of the CAN bus, turn the power switch off and leave the vehicle for 1 minute or more without operating the key, switches or opening or closing the doors. After that, disconnect the cable from the negative (-) auxiliary battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.

  • This section describes the standard values for all CAN related components.

Tech Tips


  • Operating the power switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.

  • Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.


  1. NO. 1 CAN JUNCTION CONNECTOR (for LHD)


    1. Check the No. 1 CAN junction connector.


      1. A013A5PC35
        *a

        Front view of wire harness connector

        (to No. 1 CAN Junction Connector)
        *b

        to Power Management Control ECU

        (for Sub Bus 15)
        *c

        to Skid Control ECU (Brake Booster with Master Cylinder Assembly)

        (for Sub Bus 15)
        *d

        to ECM

        (for Sub Bus 15)
        *e

        to Skid Control ECU (Brake Booster with Master Cylinder Assembly)

        (for V Bus)
        *f

        to ECM

        (for V Bus)
        *g

        to No. 3 CAN Junction Connector

        (for V Bus)

        Connection diagram

      2. Check the connection diagram of the components which are connected to the No. 1 CAN junction connector.

        Terminal No. (Symbol) Wiring Color Connected to
        A32-1 (CANH) R

        Power management control ECU

        (for Sub bus 15)
        A32-12 (CANL) SB
        A32-2 (CANH) G

        Skid control ECU (Brake booster with master cylinder assembly)

        (for Sub bus 15)
        A32-13 (CANL) SB
        A32-3 (CANH) B

        ECM

        (for Sub bus 15)
        A32-14 (CANL) SB
        A32-9 (CANH) V

        Skid control ECU (Brake booster with master cylinder assembly)

        (for V bus)
        A32-20 (CANL) W
        A32-10 (CANH) B

        ECM

        (for V bus)
        A32-21 (CANL) W
        A32-11 (CANH) L

        No. 3 CAN junction connector

        (for V bus)
        A32-22 (CANL) W

  2. NO. 1 CAN JUNCTION CONNECTOR (for RHD)


    1. Check the No. 1 CAN junction connector.


      1. A013A5PC35
        *a

        Front view of wire harness connector

        (to No. 1 CAN Junction Connector)
        *b

        to Power Management Control ECU

        (for Sub Bus 15)
        *c

        to Skid Control ECU (Brake Booster with Master Cylinder Assembly)

        (for Sub Bus 15)
        *d

        to ECM

        (for Sub Bus 15)
        *e

        to Skid Control ECU (Brake Booster with Master Cylinder Assembly)

        (for V Bus)
        *f

        to ECM

        (for V Bus)
        *g

        to No. 3 CAN Junction Connector

        (for V Bus)

        Connection diagram

      2. Check the connection diagram of the components which are connected to the No. 1 CAN junction connector.

        Terminal No. (Symbol) Wiring Color Connected to
        A32-1 (CANH) R

        Power management control ECU

        (for Sub bus 15)
        A32-12 (CANL) SB
        A32-2 (CANH) G

        Skid control ECU (Brake booster with master cylinder assembly)

        (for Sub bus 15)
        A32-13 (CANL) SB
        A32-3 (CANH) B

        ECM

        (for Sub bus 15)
        A32-14 (CANL) SB
        A32-9 (CANH) V

        Skid control ECU (Brake booster with master cylinder assembly)

        (for V bus)
        A32-20 (CANL) W
        A32-10 (CANH) B

        ECM

        (for V bus)
        A32-21 (CANL) W
        A32-11 (CANH) L

        No. 3 CAN junction connector

        (for V bus)
        A32-22 (CANL) W

  3. NO. 2 CAN JUNCTION CONNECTOR (for LHD)


    1. Check the No. 2 CAN junction connector.


      1. Connection diagram

      2. A013A5PC37
        *a

        Front view of wire harness connector

        (to No. 2 CAN Junction Connector)

        (for V Bus)
        *b

        to No. 3 CAN Junction Connector

        (for V Bus)
        *c

        to Airbag Sensor Assembly

        (for V Bus)
        *d

        to Power Steering ECU Assembly

        (for V Bus)
        *e

        to Certification ECU (Smart Key ECU Assembly)

        (for V Bus)
        *f

        to Combination Meter Assembly

        (for V Bus)
        *g

        to Power Management Control ECU

        (for V Bus)
        *h

        to Radio and Display Receiver Assembly*

        (for V Bus)
        *i

        to Air Conditioning Amplifier Assembly

        (for V Bus)
        *j

        to Transmission Control ECU Assembly

        (for V Bus)

        Check the connection diagram of the components which are connected to the No. 2 CAN junction connector.

        *: for Radio and display type

        Terminal No. (Symbol) Wiring Color Connected to
        E118-1 (CANH) R

        No. 3 CAN junction connector

        (for V bus)
        E118-12 (CANL) W
        E118-2 (CANH) V

        Airbag sensor assembly

        (for V bus)
        E118-13 (CANL) W
        E118-5 (CANH) GR

        Power steering ECU assembly

        (for V bus)
        E118-16 (CANL) W
        E118-6 (CANH) L

        Certification ECU (Smart key ECU assembly)

        (for V bus)
        E118-17 (CANL) W
        E118-7 (CANH) LG

        Combination meter assembly

        (for V bus)
        E118-18 (CANL) W
        E118-8 (CANH) P

        Power management control ECU

        (for V bus)
        E118-19 (CANL) W
        E118-9 (CANH) G

        Radio and display receiver assembly*

        (for V bus)
        E118-20 (CANL) W
        E118-10 (CANH) Y

        Air conditioning amplifier assembly

        (for V bus)
        E118-21 (CANL) W
        E118-11 (CANH) B

        Transmission control ECU assembly

        (for V bus)
        E118-22 (CANL) W

        *: for Radio and display type

  4. NO. 2 CAN JUNCTION CONNECTOR (for RHD)


    1. Check the No. 2 CAN junction connector.


      1. Connection diagram

      2. A013A5PC38
        *a

        Front view of wire harness connector

        (to No. 2 CAN Junction Connector)

        (for V Bus)
        *b

        to No. 3 CAN Junction Connector

        (for V Bus)
        *c

        to Transmission Control ECU Assembly

        (for V Bus)
        *d

        to Power Steering ECU Assembly

        (for V Bus)
        *e

        to Certification ECU (Smart Key ECU Assembly)

        (for V Bus)
        *f

        to Combination Meter Assembly

        (for V Bus)
        *g

        to DLC3

        (for V Bus)
        *h

        to Radio and Display Receiver Assembly*

        (for V Bus)
        *i

        to Steering Sensor (Spiral Cable with Sensor Sub-assembly)

        (for V Bus)

        Check the connection diagram of the components which are connected to the No. 2 CAN junction connector.

        *: for Radio and display type

        Terminal No. (Symbol) Wiring Color Connected to
        E118-1 (CANH) R

        No. 3 CAN junction connector

        (for V bus)
        E118-12 (CANL) W
        E118-4 (CANH) B

        Transmission control ECU assembly

        (for V bus)
        E118-15 (CANL) W
        E118-5 (CANH) GR

        Power steering ECU assembly

        (for V bus)
        E118-16 (CANL) W
        E118-6 (CANH) L

        Certification ECU (Smart key ECU assembly)

        (for V bus)
        E118-17 (CANL) W
        E118-7 (CANH) LG

        Combination meter assembly

        (for V bus)
        E118-18 (CANL) W
        E118-8 (CANH) BE

        DLC3

        (for V bus)
        E118-19 (CANL) W
        E118-9 (CANH) G

        Radio and display receiver assembly*

        (for V bus)
        E118-20 (CANL) W
        E118-11 (CANH) SB

        Steering sensor (Spiral cable with sensor sub-assembly)

        (for V bus)
        E118-22 (CANL) W

        *: for Radio and display type

  5. NO. 3 CAN JUNCTION CONNECTOR (for LHD)


    1. Check the No. 3 CAN junction connector.


      1. Connection diagram

      2. A013A5PC39
        *a

        Front view of wire harness connector

        (to No. 3 CAN Junction Connector)
        *b

        to No. 1 CAN Junction Connector

        (for V Bus)
        *c

        to DLC3

        (for V Bus)
        *d

        to Steering Sensor (Spiral Cable with Sensor Sub-assembly)

        (for V Bus)
        *e

        to Main Body ECU (Multiplex Network Body ECU)

        (for V Bus)
        *f

        to No. 2 CAN Junction Connector

        (for V Bus)
        *g

        to No. 1 CAN Junction Terminal

        (for Sub Bus 11)
        *h

        to AFS ECU (Headlight Swivel ECU Assembly)*1

        (for Sub Bus 11)
        *i

        to Clearance Warning ECU Assembly*2

        (for Sub Bus 11)
        *j

        to Power Management Control ECU

        (for Sub Bus 11)

        Check the connection diagram of the components which are connected to the No. 3 CAN junction connector.


        • *1: w/ AFS (Adaptive Front-lighting System)

        • *2: w/ Simple intelligent parking assist system

        Terminal No. (Symbol) Wiring Color Connected to
        E119-1 (CANH) L

        No. 1 CAN junction connector

        (for V bus)
        E119-12 (CANL) W
        E119-2 (CANH) BE

        DLC3

        (for V bus)
        E119-13 (CANL) W
        E119-3 (CANH) SB

        Steering sensor (Spiral cable with sensor sub-assembly)

        (for V bus)
        E119-14 (CANL) W
        E119-4 (CANH) G

        Main body ECU (Multiplex network body ECU)

        (for V bus)
        E119-15 (CANL) W
        E119-5 (CANH) R

        No. 2 CAN junction connector

        (for V bus)
        E119-16 (CANL) W
        E119-8 (CANH) L

        No. 1 CAN junction terminal*1*2

        (for Sub bus 11)
        E119-19 (CANL) LG
        E119-9 (CANH) G

        AFS ECU (Headlight swivel ECU assembly)*1

        (for Sub bus 11)
        E119-20 (CANL) LG
        E119-10 (CANH) R

        Clearance warning ECU assembly*2

        (for Sub bus 11)
        E119-21 (CANL) LG
        E119-11 (CANH) B

        Power management control ECU*1*2

        (for Sub bus 11)
        E119-22 (CANL) LG

        • *1: w/ AFS (Adaptive Front-lighting System)

        • *2: w/ Simple intelligent parking assist system

  6. NO. 3 CAN JUNCTION CONNECTOR (for RHD)


    1. Check the No. 3 CAN junction connector.


      1. Connection diagram

      2. A013A5PC40
        *a

        Front view of wire harness connector

        (to No. 3 CAN Junction Connector)
        *b

        to No. 1 CAN Junction Connector

        (for V Bus)
        *c

        to Main Body ECU (Multiplex Network Body ECU)

        (for V Bus)
        *d

        to Power Management Control ECU

        (for V Bus)
        *e

        to Air Conditioning Amplifier Assembly

        (for V Bus)
        *f

        to No. 2 CAN Junction Connector

        (for V Bus)
        *g

        to Airbag Sensor Assembly

        (for V Bus)
        *h

        to No. 1 CAN Junction Terminal*

        (for Sub Bus 11)
        *i

        to Clearance Warning ECU Assembly*

        (for Sub Bus 11)
        *j

        to Power Management Control ECU*

        (for Sub Bus 11)

        Check the connection diagram of the components which are connected to the No. 3 CAN junction connector.

        *: w/ Simple intelligent parking assist system

        Terminal No. (Symbol) Wiring Color Connected to
        E119-1 (CANH) L

        No. 1 CAN junction connector

        (for V bus)
        E119-12 (CANL) W
        E119-2 (CANH) G

        Main body ECU (Multiplex network body ECU)

        (for V bus)
        E119-13 (CANL) W
        E119-3 (CANH) P

        Power management control ECU

        (for V bus)
        E119-14 (CANL) W
        E119-4 (CANH) Y

        Air conditioning amplifier assembly

        (for V bus)
        E119-15 (CANL) W
        E119-5 (CANH) R

        No. 2 CAN junction connector

        (for V bus)
        E119-16 (CANL) W
        E119-6 (CANH) V

        Airbag sensor assembly

        (for V bus)
        E119-17 (CANL) W
        E119-8 (CANH) L

        No. 1 CAN junction terminal*

        (for Sub bus 11)
        E119-19 (CANL) LG
        E119-10 (CANH) R

        Clearance warning ECU assembly*

        (for Sub bus 11)
        E119-21 (CANL) LG
        E119-11 (CANH) B

        Power management control ECU*

        (for Sub bus 11)
        E119-22 (CANL) LG

        *: w/ Simple intelligent parking assist system

  7. NO. 1 CAN JUNCTION TERMINAL (w/ AFS (Adaptive Front-lighting System)) (w/ Simple Intelligent Parking Assist System)


    1. Check the No. 1 CAN junction terminal.


      1. A013AHYC01
        *a

        Front view of wire harness connector

        (to No. 1 CAN Junction Terminal)
        *b

        to No. 3 CAN Junction Connector

        (for Sub Bus 11)

        Connection diagram

      2. Check the connection diagram of the components which are connected to the No. 1 CAN junction terminal.

        Terminal No. (Symbol) Wiring Color Connected to
        E120-3 (CANH) L

        No. 3 CAN junction connector

        (for Sub bus 11)
        E120-2 (CANL) LG

  8. DLC3


    1. Disconnect the cable from the negative (-) auxiliary battery terminal.

    2. A013AGZC23
      *1 DLC3

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

    3. POWER MANAGEMENT CONTROL ECU


      1. Disconnect the cable from the negative (-) auxiliary battery terminal.

      2. A0139FNC15
      4. *a

      Rear view of wire harness connector

      (to Power Management Control ECU)

Disconnect the power management control ECU connector.

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

  • Disconnect the cable from the negative (-) auxiliary battery terminal.

  • A01397BC01
    • *1

    Rear view of wire harness connector

    (to Power Management Control ECU)

    Disconnect the power management control ECU connector.

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

  • ECM

    A013BAOC03
    • *a

    Component without harness connected

    (ECM)

    		 - -

    1. Disconnect the cable from the negative (-) auxiliary battery terminal.

    2. Disconnect the ECM connectors.

      A013AY9C01
      *a

      Front view of wire harness connector

      (to ECM)

      		 - -

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

    4. COMBINATION METER ASSEMBLY


      1. Disconnect the cable from the negative (-) auxiliary battery terminal.

      2. A013A37C01
      5. *a

      Front view of wire harness connector

      (to Combination Meter Assembly)

      Disconnect the combination meter assembly connector.

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

    6. INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

      A0139SGC18
      7. *A Main Body ECU (Multiplex Network Body ECU) with 1 Connector - -
      *1 Main Body ECU (Multiplex Network Body ECU) - -
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly and Main Body ECU (Multiplex Network Body ECU))

      		 *b 1 Connector
      A0139KBC17
      *A Main Body ECU (Multiplex Network Body ECU) with 2 Connectors - -
      *1 Main Body ECU (Multiplex Network Body ECU) - -
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly and Main Body ECU (Multiplex Network Body ECU))

      		 *b 2 Connectors

      1. Disconnect the cable from the negative (-) auxiliary battery terminal.

      2. Disconnect the main body ECU (multiplex network body ECU) connector.

        A0139PUC01
        *1 DLC3 - -
        *a

        Front view of wire harness connector

        (to Main Body ECU (Multiplex Network Body ECU))

        		 - -

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

      4. SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)


        1. Disconnect the cable from the negative (-) auxiliary battery terminal.

        2. A013A2LC16
        5. *a

        Front view of wire harness connector

        (to Skid Control ECU (Brake Booster with Master Cylinder Assembly))

        Disconnect the skid control ECU (brake booster with master cylinder assembly) connector.

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

      6. TRANSMISSION CONTROL ECU ASSEMBLY

        A013AEGC03
        7. *a

        Component without harness connected

        (Transmission Control ECU Assembly)

        		 - -

        1. Disconnect the cable from the negative (-) auxiliary battery terminal.

        2. Disconnect the transmission control ECU assembly connector.

          A013AO4C01
          *a

          Front view of wire harness connector

          (to Transmission Control ECU Assembly)

          		 - -

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

        4. STEERING SENSOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY)


          1. Disconnect the cable from the negative (-) auxiliary battery terminal.

          2. A013A4EC07
          5. *a

          Front view of wire harness connector

          (to Steering Sensor (Spiral Cable with Sensor Sub-assembly))

          Disconnect the steering sensor (spiral cable with sensor sub-assembly) connector.

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

        6. POWER STEERING ECU ASSEMBLY

          A013948C06
          7. *a

          Component without harness connected

          (Power Steering ECU Assembly)

          		 - -

          1. Disconnect the cable from the negative (-) auxiliary battery terminal.

          2. Disconnect the power steering ECU assembly connectors.

            A013B9UC01
            *1 DLC3 - -
            *a

            Front view of wire harness connector

            (to Power Steering ECU Assembly)

            		 - -

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

          4. AIRBAG SENSOR ASSEMBLY

            A013AXMC09
            5. *a

            Component without harness connected

            (Airbag Sensor Assembly)

            		 - -

            1. Disconnect the cable from the negative (-) auxiliary battery terminal.

            2. Disconnect the airbag sensor assembly connector.

              A0139ARC05
              *1 DLC3 - -
              *a

              Front view of wire harness connector

              (to Airbag Sensor Assembly)

              		 - -

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

            4. CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

              A013ACPC01
              5. *a

              Component without harness connected

              (Certification ECU (Smart Key ECU Assembly))

              		 - -

              1. Disconnect the cable from the negative (-) auxiliary battery terminal.

              2. Disconnect the certification ECU (smart key ECU assembly) connectors.

                A0139UYC01
                *a

                Front view of wire harness connector

                (to Certification ECU (Smart Key ECU Assembly))

                		 - -

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

              4. RADIO AND DISPLAY RECEIVER ASSEMBLY (for Radio And Display Type) (w/o Navigation System)

                A013B7KC03
                5. *a

                Component without harness connected

                (Radio and Display Receiver Assembly)

                		 - -

                1. Disconnect the cable from the negative (-) auxiliary battery terminal.

                2. Disconnect the radio and display receiver assembly connectors.

                  A0139HCC05
                  *a

                  Front view of wire harness connector

                  (to Radio and Display Receiver Assembly)

                  		 - -

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

                4. RADIO AND DISPLAY RECEIVER ASSEMBLY (for Radio And Display Type) (w/ Navigation System)

                  A013ADPC01
                  5. *a

                  Component without harness connected

                  (Radio and Display Receiver Assembly)

                  		 - -

                  1. Disconnect the cable from the negative (-) auxiliary battery terminal.

                  2. Disconnect the radio and display receiver assembly connectors.

                    A0139HCC05
                    *a

                    Front view of wire harness connector

                    (to Radio and Display Receiver Assembly)

                    		 - -

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

                  4. AIR CONDITIONING AMPLIFIER ASSEMBLY


                    1. Disconnect the cable from the negative (-) auxiliary battery terminal.

                    2. A013B9ZC05
                    5. *a

                    Front view of wire harness connector

                    (to Air Conditioning Amplifier Assembly)

                    Disconnect the air conditioning amplifier assembly connector.

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

                  6. CLEARANCE WARNING ECU ASSEMBLY (w/ Simple Intelligent Parking Assist System)

                    A013A8WC02
                    7. *a

                    Component without harness connected

                    (Clearance Warning ECU Assembly)

                    		 - -

                    1. Disconnect the cable from the negative (-) auxiliary battery terminal.

                    2. Disconnect the clearance warning ECU assembly connector.

                      A01394YC06
                      *1 DLC3 - -
                      *a

                      Front view of wire harness connector

                      (to Clearance Warning ECU Assembly)

                      		 - -

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

                    4. AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) (w/ AFS (Adaptive Front-lighting System))


                      1. Disconnect the cable from the negative (-) auxiliary battery terminal.

                      2. A0139G9C01
                      5. *1 DLC3
                      *a

                      Front view of wire harness connector

                      (to AFS ECU (Headlight Swivel ECU Assembly))

                      Disconnect the AFS ECU (headlight swivel ECU assembly) connector.

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