CAN COMMUNICATION SYSTEM(for LHD) TERMINALS OF ECU

Note


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

    Click here

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

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

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


    1. Check the No. 1 CAN junction connector.

      Tech Tips

      Connectors that connect to the CAN junction connector can be distinguished by the color of their CAN bus lines. When the connectors have been disconnected from the CAN junction connector, reconnecting the connectors to non-original positions on the CAN junction connector does not affect system performance. However, it is preferred to reconnect the connectors to their original positions to avoid negative effects on the wiring such as tension on the wire harnesses, and to make future maintenance easier.


      1. Connection diagram

        B006QS3C01
        *a

        Component with harness connected

        (No. 1 CAN Junction Connector)

        		 *b to No. 2 CAN Junction Terminal
        *c to Outer Mirror Control ECU Assembly (for Front Passenger Side) *d to Slide Door Motor Unit RH
        *e to No. 5 CAN Junction Connector - -

      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
        G84-1 (CANH) BE

        No. 5 CAN junction connector

        (for sub bus 1)
        G84-2 (CANL) W
        G85-1 (CANH) LG

        Slide door motor unit RH

        (for sub bus 1)
        G85-2 (CANL) W
        G86-1 (CANH) SB

        Outer mirror control ECU assembly (for front passenger side)

        (for sub bus 1)
        G86-2 (CANL) W
        G120-1 (CANH) B

        No. 2 CAN junction terminal

        (for sub bus 1)
        G120-2 (CANL) W

  2. NO. 2 CAN JUNCTION CONNECTOR


    1. Check the No. 2 CAN junction connector.

      Tech Tips

      Connectors that connect to the CAN junction connector can be distinguished by the color of their CAN bus lines. When the connectors have been disconnected from the CAN junction connector, reconnecting the connectors to non-original positions on the CAN junction connector does not affect system performance. However, it is preferred to reconnect the connectors to their original positions to avoid negative effects on the wiring such as tension on the wiring harnesses, and to make future maintenance easier.


      1. Connection diagram

        B006O9OC01
        *a

        Component with harness connected

        (No. 2 CAN Junction Connector)

        		 *b to Clearance Warning ECU Assembly
        *c

        to Parking Assist ECU

        (w/ Panoramic View Monitor System)

        		 *d

        to Inner Rear View Mirror Assembly

        (w/ Automatic High Beam System)
        *e to Central Gateway ECU (Network Gateway ECU) *f

        to Blind Spot Monitor Sensor LH

        (w/ Blind Spot Monitor System)

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

        Terminal No. (Symbol) Wiring Color Connected to
        G91-1 (CANH) LG

        Clearance warning ECU assembly

        (for bus 5)
        G91-2 (CANL) W
        G92-1 (CANH) Y

        Parking assist ECU*1

        (for bus 5)
        G92-2 (CANL) W
        G93-1 (CANH) R

        Inner rear view mirror assembly*2

        (for bus 5)
        G93-2 (CANL) W
        G123-1 (CANH) V

        Central gateway ECU (network gateway ECU)

        (for bus 5)
        G123-2 (CANL) W
        G125-1 (CANH) B

        Blind spot monitor sensor LH*3

        (for bus 5)
        G125-2 (CANL) W
        G136-1 (CANH) BE

        Central gateway ECU (network gateway ECU)

        (for bus 5)
        G136-2 (CANL) W

        • *1: w/ Panoramic View Monitor System

        • *2: w/ Automatic High Beam System

        • *3: w/ Blind Spot Monitor System

  3. NO. 3 CAN JUNCTION CONNECTOR


    1. Check the No. 3 CAN junction connector.


      1. Connection diagram

        B006RGQC05
        *a

        Front view of wire harness connector

        (to No. 3 CAN Junction Connector)

        		 *b to Steering Sensor
        *c

        to ECM

        (for 2GR-FKS)

        		 *d to Main Body ECU (Multiplex Network Body ECU)
        *e to Airbag ECU Assembly *f to Parking Brake ECU Assembly
        *g to Skid Control ECU (Brake Actuator Assembly) *h to No. 4 CAN Junction Connector
        *i to Headlight ECU Sub-assembly LH - -

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

        Terminal No. (Symbol) Wiring Color Connected to
        G97-2 (CANH) BE

        Steering sensor

        (for bus 2)
        G97-12 (CANL) W
        G97-3 (CANH) LG

        ECM

        (for bus 2)
        G97-13 (CANL) W
        G97-4 (CANH) R

        Main body ECU (multiplex network body ECU)

        (for bus 2)
        G97-14 (CANL) W
        G97-5 (CANH) Y

        Airbag ECU assembly

        (for bus 2)
        G97-15 (CANL) W
        G97-6 (CANH) G

        Parking brake ECU assembly

        (for bus 2)
        G97-16 (CANL) W
        G97-7 (CANH) GR

        Skid control ECU (brake actuator assembly)

        (for bus 2)
        G97-17 (CANL) W
        G97-8 (CANH) B

        No. 4 CAN junction connector

        (for bus 2)
        G97-18 (CANL) W
        G97-9 (CANH) B

        Headlight ECU sub-assembly LH

        (for bus 2)
        G97-19 (CANL) W

  4. NO. 4 CAN JUNCTION CONNECTOR


    1. Check the No. 4 CAN junction connector.


      1. Connection diagram

        B006RGQC06
        *a

        Front view of wire harness connector

        (to No. 4 CAN Junction Connector)

        		 *b to No. 3 CAN Junction Connector
        *c to Combination Meter Assembly *d to Certification ECU (Smart Key ECU Assembly)
        *e to Power steering ECU assembly *f to Engine Stop and Start ECU
        *g to Air Conditioning Amplifier Assembly *h to Central Gateway ECU (Network Gateway ECU)

      2. Check the connection diagram of the components which are connected to the No. 4 CAN junction connector.

        Terminal No. (Symbol) Wiring Color Connected to
        G98-1 (CANH) B

        No. 3 CAN junction connector

        (for bus 2)
        G98-11 (CANL) W
        G98-2 (CANH) Y

        Combination meter assembly

        (for bus 2)
        G98-12 (CANL) W
        G98-3 (CANH) G

        Certification ECU (smart key ECU assembly)

        (for bus 2)
        G98-13 (CANL) W
        G98-5 (CANH) P

        Power steering ECU assembly

        (for bus 2)
        G98-15 (CANL) W
        G98-8 (CANH) GR

        Engine stop and start ECU

        (for bus 2)
        G98-18 (CANL) W
        G98-9 (CANH) BE

        Air conditioning amplifier assembly

        (for bus 2)
        G98-19 (CANL) W
        G98-10 (CANH) P

        Central gateway ECU (network gateway ECU)

        (for bus 2)
        G98-20 (CANL) W

  5. NO. 5 CAN JUNCTION CONNECTOR


    1. Check the No. 5 CAN junction connector.

      Tech Tips

      Connectors that connect to the CAN junction connector can be distinguished by the color of their CAN bus lines. When the connectors have been disconnected from the CAN junction connector, reconnecting the connectors to non-original positions on the CAN junction connector does not affect system performance. However, it is preferred to reconnect the connectors to their original positions to avoid negative effects on the wiring such as tension on the wire harnesses, and to make future maintenance easier.


      1. Connection diagram

        B006PBIC01
        *a

        Component with harness connected

        (No. 5 CAN Junction Connector)

        		 *b to Main Body ECU (Multiplex Network Body ECU)
        *c to No. 1 CAN Junction Connector *d to Room Light Control Relay
        *e to Slide Door Motor Unit LH *f to Back Door Motor Unit
        *g to Outer Mirror Control ECU Assembly (for Driver Side) *h to Front Power Seat Switch LH

      2. Check the connection diagram of the components which are connected to the No. 5 CAN junction connector.

        Terminal No. (Symbol) Wiring Color Connected to
        G99-1 (CANH) G

        Main body ECU (multiplex network body ECU)

        (for sub bus 1)
        G99-2 (CANL) W
        G100-1 (CANH) BE

        No. 1 CAN junction connector

        (for sub bus 1)
        G100-2 (CANL) W
        G101-1 (CANH) V

        Room light control relay

        (for sub bus 1)
        G101-2 (CANL) W
        G102-1 (CANH) P

        Slide door motor unit LH

        (for sub bus 1)
        G102-2 (CANL) W
        G103-1 (CANH) L

        Back door motor unit

        (for sub bus 1)
        G103-2 (CANL) W
        G104-1 (CANH) SB

        Outer mirror control ECU assembly (for driver side)

        (for sub bus 1)
        G104-2 (CANL) W
        G105-1 (CANH) GR

        Front power seat switch LH

        (for sub bus 1)
        G105-2 (CANL) W

  6. NO. 7 CAN JUNCTION CONNECTOR


    1. Check the No. 7 CAN junction connector.

      Tech Tips

      Connectors that connect to the CAN junction connector can be distinguished by the color of their CAN bus lines. When the connectors have been disconnected from the CAN junction connector, reconnecting the connectors to non-original positions on the CAN junction connector does not affect system performance. However, it is preferred to reconnect the connectors to their original positions to avoid negative effects on the wiring such as tension on the wiring harnesses, and to make future maintenance easier.


      1. Connection diagram

        B006RBVC02
        *a

        Component with harness connected

        (No. 7 CAN Junction Connector)

        		 *b to Central Gateway ECU (Network Gateway ECU)
        *c

        to Navigation Receiver Assembly

        (for Navigation Receiver Type)

        		 *d

        to Radio and Display Receiver Assembly

        (for Radio and Display Type)
        *e

        to Telematics Transceiver

        (w/ Manual (SOS) Switch)

        		 - -

      2. Check the connection diagram of the components which are connected to the No. 7 CAN junction connector.

        Terminal No. (Symbol) Wiring Color Connected to
        G130-1 (CANH) L

        Central gateway ECU (network gateway ECU)

        (for bus 3)
        G130-2 (CANL) W
        G131-1 (CANH) P

        Central gateway ECU (network gateway ECU)

        (for bus 3)
        G131-2 (CANL) W
        G133-1 (CANH) L

        Navigation receiver assembly*1

        (for bus 3)
        G133-2 (CANL) W
        G133-1 (CANH) L

        Radio and display receiver assembly*2

        (for bus 3)
        G133-2 (CANL) W
        G134-1 (CANH) LG

        Telematics transceiver*3

        (for bus 3)
        G134-2 (CANL) W

        • *1: for Navigation Receiver Type

        • *2: for Radio and Display Type

        • *3: w/ Manual (SOS) Switch

  7. NO. 2 CAN JUNCTION TERMINAL


    1. Check the No. 2 CAN junction terminal.


      1. Connection diagram

        B006R10C43
        *a

        Front view of wire harness connector

        (to No. 2 CAN Junction Terminal)

        		 *b to No. 1 CAN Junction Connector

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

        Terminal No. (Symbol) Wiring Color Connected to
        G96-3 (CANH) V

        No. 1 CAN junction connector

        (for sub bus 1)
        G96-2 (CANL) W

  8. DLC3


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

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

      B006QTOC28
      *1 DLC3 - -

    3. CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

      B006RKKC33
      4. *a

      Component without harness connected

      (Central Gateway ECU (Network Gateway ECU))

      		 - -

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

  2. Disconnect the G116 central gateway ECU (network gateway ECU) connector.

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

    B006RL7C50
    *a

    Front view of wire harness connector

    (to Central Gateway ECU (Network Gateway ECU))

    		 - -

  4. ECM

    Refer to Terminals of ECU.

    Click here


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

    2. Disconnect the A53 and D110 ECM connectors.

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

      B006OM8C30
    5. *a

    Front view of wire harness connector

    (to ECM)

    		 - -

  • CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    Refer to Terminals of ECU.

    Click here


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

    2. Disconnect the G22 certification ECU (smart key ECU assembly) connector.

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

      B006NNEC04
    • *a

    Front view of wire harness connector

    (to Certification ECU (Smart Key ECU Assembly))

    		 - -

  • MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Refer to Terminals of ECU.

    Click here


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

    2. Disconnect the G62 and G63 main body ECU (multiplex network body ECU) connectors.

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

      B006O9GC04
    • *1 DLC3 - -
    *a

    Front view of wire harness connector

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

    		 - -

  • POWER STEERING ECU ASSEMBLY

    Refer to Terminals of ECU.

    Click here


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

    2. Disconnect the G20 and G53 power steering ECU assembly connectors.

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

      B006MW2C14
    • *a

    Front view of wire harness connector

    (to Power Steering ECU Assembly)

    		 - -

  • SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

    Refer to Terminals of ECU.

    Click here


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

    2. Disconnect the A50 skid control ECU (brake actuator assembly) connector.

    3. B006RJYC06
    • *a

    Front view of wire harness connector

    (to Skid Control ECU (Brake Actuator Assembly))

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

  • ENGINE STOP AND START ECU


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

    2. Disconnect the A59 and G50 engine stop and start ECU connectors.

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

      B006LUWC09
    • *a

    Front view of wire harness connector

    (to Engine Stop and Start ECU)

    		 - -

  • AIRBAG ECU ASSEMBLY

    Refer to Terminals of ECU.

    Click here


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

    2. Disconnect the G14 airbag ECU assembly connector.

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

      B006PYHC03
    • *1 DLC3 - -
    *a

    Front view of wire harness connector

    (to Airbag ECU Assembly)

    		 - -

  • STEERING SENSOR

    B006NKYC03
    • *a

    Component without harness connected

    (Steering Sensor)

    		 - -

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

    2. Disconnect the G12 steering sensor connector.

      B006KZ5C10
      *a

      Front view of wire harness connector

      (to Steering Sensor)

      		 - -

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

    4. AIR CONDITIONING AMPLIFIER ASSEMBLY

      Refer to Terminals of ECU.

      Click here


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

      2. B006N6SC64
      5. *a

      Front view of wire harness connector

      (to Air Conditioning Amplifier Assembly)

      Disconnect the G36 air conditioning amplifier assembly connector.

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

    6. COMBINATION METER ASSEMBLY

      Refer to Terminals of ECU.

      Click here


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

      2. Disconnect the G16 combination meter assembly connector.

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

        B006QJNC04
      7. *a

      Front view of wire harness connector

      (to Combination Meter Assembly)

      		 - -

    7. CLEARANCE WARNING ECU ASSEMBLY

      Refer to Terminals of ECU.

      Click here


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

      2. Disconnect the G59 clearance warning ECU assembly connector.

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

        B006PWLC04
      8. *1 DLC3 - -
      *a

      Front view of wire harness connector

      (to Clearance Warning ECU Assembly)

      		 - -

    8. PARKING BRAKE ECU ASSEMBLY

      Refer to Terminals of ECU.

      Click here


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

      2. Disconnect the K14 and K15 parking brake ECU assembly connectors.

      3. B006P52C11
      9. *a

      Front view of wire harness connector

      (to Parking Brake ECU Assembly)

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

    9. NAVIGATION RECEIVER ASSEMBLY

      Refer to Terminals of ECU.

      Click here


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

      2. Disconnect the F1 and F3 navigation receiver assembly connectors.

      3. B006Q86C32
      10. *a

      Front view of wire harness connector

      (to Navigation Receiver Assembly)

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

    10. RADIO AND DISPLAY RECEIVER ASSEMBLY

      Refer to Terminals of ECU.

      w/ Audio and Visual System (for Radio and Display Type): Click here

      w/ Navigation System (for Radio and Display Type): Click here


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

      2. Disconnect the F37 and F39 radio and display receiver assembly connectors.

      3. B006Q86C34
      11. *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

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

    11. HEADLIGHT ECU SUB-ASSEMBLY LH

      Refer to Terminals of ECU.

      Click here


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

      2. Disconnect the A28 headlight ECU sub-assembly LH connector.

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

        B006LOSC03
      12. *1 DLC3 - -
      *a

      Front view of wire harness connector

      (to Headlight ECU Sub-assembly LH)

      		 - -

    12. OUTER MIRROR CONTROL ECU ASSEMBLY (for Driver Side)

      Refer to Terminals of ECU.

      Click here


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

      2. Disconnect the I28 outer mirror control ECU assembly (for driver side) connector.

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

        B006L6FC06
      13. *a

      Front view of wire harness connector

      (Outer Mirror Control ECU Assembly (for Driver Side))

      		 - -

    13. OUTER MIRROR CONTROL ECU ASSEMBLY (for Front Passenger Side)

      Refer to Terminals of ECU.

      Click here


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

      2. Disconnect the I13 outer mirror control ECU assembly (for front passenger side) connector.

        B006L6FC05
      14. *a

      Front view of wire harness connector

      (to Outer Mirror Control ECU Assembly (for Front Passenger Side))

      		 - -

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

    15. FRONT POWER SEAT SWITCH LH

      Refer to Terminals of ECU.

      Click here


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

      2. Disconnect the W19 and W20 front power seat switch LH connectors.

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

        B006MUFC07
      16. *a

      Front view of wire harness connector

      (to Front Power Seat Switch LH)

      		 - -

    16. BACK DOOR MOTOR UNIT

      Refer to Terminals of ECU.

      Click here


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

      2. Disconnect the K22 back door motor unit connector.

      3. B006OAPC04
      17. *a

      Front view of wire harness connector

      (to Back Door Motor Unit)

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

    17. SLIDE DOOR MOTOR UNIT LH

      Refer to Terminals of ECU.

      Click here


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

      2. Disconnect the K19 slide door motor unit LH connector.

      3. B006P4OC32
      18. *a

      Front view of wire harness connector

      (to Slide Door Motor Unit LH)

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

    18. SLIDE DOOR MOTOR UNIT RH

      Refer to Terminals of ECU.

      Click here


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

      2. Disconnect the L15 slide door motor unit RH connector.

      3. B006P4OC33
      19. *a

      Front view of wire harness connector

      (to Slide Door Motor Unit RH)

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

    19. ROOM LIGHT CONTROL RELAY

      Refer to Terminals of ECU.

      Click here


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

      2. Disconnect the S30 room light control relay connector.

      3. B006M1VC04
      20. *a

      Front view of wire harness connector

      (to Room Light Control Relay)

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

    20. INNER REAR VIEW MIRROR ASSEMBLY (w/ Automatic High Beam System)

      Refer to Terminals of ECU.

      Click here


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

      2. Disconnect the S22 inner rear view mirror assembly connector.

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

        B006PONC01
      21. *1 DLC3 - -
      *a

      Front view of wire harness connector

      (to Inner Rear View Mirror Assembly)

      		 - -

    21. PARKING ASSIST ECU (w/ Panoramic View Monitor System)

      Refer to Terminals of ECU.

      Click here


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

      2. Disconnect the F9 parking assist ECU connector.

      3. B006REIC20
      22. *a

      Front view of wire harness connector

      (to Parking Assist ECU)

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

    22. TELEMATICS TRANSCEIVER (w/ Manual (SOS) Switch)

      Refer to Terminals of ECU.

      Click here


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

      2. Disconnect the M1 telematics transceiver connector.

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

        B006PW8C04
      23. *a

      Front view of wire harness connector

      (to Telematics Transceiver)

      		 - -

    23. BLIND SPOT MONITOR SENSOR LH (w/ Blind Spot Monitor System)

      Refer to Terminals of ECU.

      Click here


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

      2. Disconnect the K40 blind spot monitor sensor LH connector.

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

        B006OYKC07
      24. *1 DLC3 - -
      *a

      Front view of wire harness connector

      (to Blind Spot Monitor Sensor LH)

      		 - -