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 or any 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. Connection diagram

        B004G5AC81
        *a

        Front view of wire harness connector

        (to No. 1 CAN Junction Connector)

        		 *b

        to No. 2 CAN Junction Connector

        (for V Bus)
        *c

        to Combination Meter Assembly

        (for V Bus)

        		 *d

        to Radio Receiver Assembly

        (for V Bus)
        *e

        to Network Gateway ECU

        (w/ Network Gateway ECU)

        (for V Bus)

        		 *f

        to Air Conditioning Amplifier Assembly

        (for V Bus)
        *g

        to Stereo Component Equalizer Assembly

        (w/ ASC System)

        (for V Bus)

        		 *h

        to Certification ECU (Smart Key ECU Assembly)

        (for V Bus)
        *i

        to Hybrid Vehicle Control ECU Assembly

        (for V Bus)

        		 *j

        to Power Steering ECU Assembly

        (for V Bus)

      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
        O104-1 (CANH) L

        No. 2 CAN junction connector

        (for V bus)
        O104-11 (CANL) B
        O104-2 (CANH) LG

        Combination meter assembly

        (for V bus)
        O104-12 (CANL) B
        O104-3 (CANH) R

        Radio receiver assembly

        (for V bus)
        O104-13 (CANL) B
        O104-4 (CANH) BE

        Network gateway ECU*1

        (for V bus)
        O104-14 (CANL) B
        O104-5 (CANH) P

        Air conditioning amplifier assembly

        (for V bus)
        O104-15 (CANL) B
        O104-6 (CANH) V

        Stereo component equalizer assembly*2

        (for V bus)
        O104-16 (CANL) B
        O104-7 (CANH) W

        Certification ECU (smart key ECU assembly)

        (for V bus)
        O104-17 (CANL) B
        O104-8 (CANH) SB

        Hybrid vehicle control ECU assembly

        (for V bus)
        O104-18 (CANL) B
        O104-9 (CANH) G

        Power steering ECU assembly

        (for V bus)
        O104-19 (CANL) B

        • *1: w/ Network Gateway ECU

        • *2: w/ ASC System

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


    1. Check the No. 2 CAN junction connector.


      1. Connection diagram

        B004G5AC82
        *a

        Front view of wire harness connector

        (to No. 2 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 ECM

        (for V Bus)
        *e

        to Headlight Leveling ECU Assembly

        (for Single Beam Headlight)

        (for V Bus)

        		 *f

        to Airbag ECU Assembly

        (for V Bus)
        *g

        to Yaw Rate Sensor

        (for V Bus)

        		 *h

        to DLC3

        (for V Bus)
        *i

        to Steering Sensor

        (for V Bus)

        		 *j

        to Skid Control ECU Assembly

        (for V Bus)

      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
        O105-1 (CANH) L

        No. 1 CAN junction connector

        (for V bus)
        O105-11 (CANL) B
        O105-2 (CANH) Y

        Main body ECU (multiplex network body ECU)

        (for V bus)
        O105-12 (CANL) B
        O105-3 (CANH) R

        ECM

        (for V bus)
        O105-13 (CANL) B
        O105-4 (CANH) LG

        Headlight leveling ECU assembly*

        (for V bus)
        O105-14 (CANL) B
        O105-5 (CANH) BE

        Airbag ECU assembly

        (for V bus)
        O105-15 (CANL) B
        O105-6 (CANH) G

        Yaw rate sensor

        (for V bus)
        O105-16 (CANL) B
        O105-8 (CANH) W

        DLC3

        (for V bus)
        O105-18 (CANL) B
        O105-9 (CANH) P

        Steering sensor

        (for V bus)
        O105-19 (CANL) B
        O105-10 (CANH) SB

        Skid control ECU assembly

        (for V bus)
        O105-20 (CANL) B

        • *: for Single Beam Headlight

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


    1. Check the No. 5 CAN junction connector.


      1. Connection diagram

        B004FE0C93
        *a

        Front view of wire harness connector

        (to No. 5 CAN Junction Connector)

        		 *b

        to Multiplex Tilt and Telescopic ECU

        (w/ Power Tilt and Power Telescopic System)

        (for Sub Bus 1)
        *c

        to No. 9 CAN Junction Connector

        (for Sub Bus 1)

        		 *d

        to Main Body ECU (Multiplex Network Body ECU)

        (for Sub Bus 1)
        *e

        to Outer Mirror Control ECU Assembly (for Driver side)

        (w/ Seat Position Memory System)

        (for Sub Bus 1)

        		 *f

        to Headlight ECU Sub-assembly

        (for Triple Beam Headlight)

        (for Sub Bus 1)
        *g

        to Position Control ECU and Switch Assembly LH

        (w/ Seat Position Memory System)

        (for Sub Bus 1)

        		 *h

        to No. 7 CAN Junction Connector

        (for Sub Bus 2)
        *i

        to No. 11 Junction Connector

        (for Sub Bus 2)

        		 *j

        to Driving Support ECU Assembly

        (w/ Pre-crash Safety System)

        (for Sub Bus 2)
        *k

        to Clearance Warning ECU Assembly

        (w/ LEXUS Parking Assist-sensor System)

        (for Sub Bus 2)

        		 - -

      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
        O106-1 (CANH) BE

        Multiplex tilt and telescopic ECU*1

        (for Sub bus 1)
        O106-12 (CANL) B
        O106-2 (CANH) L

        No. 9 CAN junction connector

        (for Sub bus 1)
        O106-13 (CANL) B
        O106-3 (CANH) P

        Main body ECU (multiplex network body ECU)

        (for Sub bus 1)
        O106-14 (CANL) B
        O106-4 (CANH) W

        Outer mirror control ECU assembly (for driver side)*2

        (for Sub bus 1)
        O106-15 (CANL) B
        O106-5 (CANH) V

        Headlight ECU sub-assembly*3

        (for Sub bus 1)
        O106-16 (CANL) B
        O106-6 (CANH) R

        Position control ECU and switch assembly LH*2

        (for Sub bus 1)
        O106-17 (CANL) B
        O106-7 (CANH) L

        No. 7 CAN junction connector

        (for Sub bus 2)
        O106-18 (CANL) B
        O106-8 (CANH) LG

        No. 11 junction connector

        (for Sub bus 2)
        O106-19 (CANL) B
        O106-10 (CANH) G

        Driving support ECU assembly*4

        (for Sub bus 2)
        O106-21 (CANL) B
        O106-11 (CANH) SB

        Clearance warning ECU assembly*5

        (for Sub bus 2)
        O106-22 (CANL) B

        • *1: w/ Power Tilt and Power Telescopic System

        • *2: w/ Seat Position Memory System

        • *3: for Triple Beam Headlight

        • *4: w/ Pre-crash Safety System

        • *5: w/ LEXUS Parking Assist-sensor System

  4. NO. 7 CAN JUNCTION CONNECTOR (for LHD)


    1. Check the No. 7 CAN junction connector.


      1. Connection diagram

        B004FE0C94
        *a

        Front view of wire harness connector

        (to No. 7 CAN Junction Connector)

        		 *b

        to Absorber Control ECU

        (w/ AVS System)

        (for Sub Bus 2)
        *c

        to No. 5 CAN Junction Connector

        (for Sub Bus 2)

        		 *d

        to Hybrid Vehicle Control ECU Assembly

        (for Sub Bus 2)

      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
        O108-7 (CANH) SB

        Absorber control ECU*

        (for Sub bus 2)
        O108-18 (CANL) B
        O108-9 (CANH) L

        No. 5 CAN junction connector

        (for Sub bus 2)
        O108-20 (CANL) B
        O108-10 (CANH) V

        Hybrid vehicle control ECU assembly

        (for Sub bus 2)
        O108-21 (CANL) B

        • *: w/ AVS System

  5. NO. 8 CAN JUNCTION CONNECTOR (for LHD)


    1. Check the No. 8 CAN junction connector.


      1. Connection diagram

        B004FE0C95
        *a

        Front view of wire harness connector

        (to No. 8 CAN Junction Connector)

        		 *b

        to Hybrid Vehicle Control ECU Assembly

        (for Sub Bus 15)
        *c

        to Skid Control ECU Assembly

        (for Sub Bus 15)

        		 *d

        to ECM

        (for Sub Bus 15)

      2. Check the connection diagram of the components which are connected to the No. 8 CAN junction connector.

        Terminal No. (Symbol) Wiring Color Connected to
        O110-1 (CANH) R

        Hybrid vehicle control ECU assembly

        (for Sub bus 15)
        O110-12 (CANL) B
        O110-2 (CANH) W

        Skid control ECU assembly

        (for Sub bus 15)
        O110-13 (CANL) B
        O110-3 (CANH) P

        ECM

        (for Sub bus 15)
        O110-14 (CANL) B

  6. NO. 9 CAN JUNCTION CONNECTOR (for LHD)


    1. Check the No. 9 CAN junction connector.


      1. Connection diagram

        B004E0SC19
        *a

        Front view of wire harness connector

        (to No. 9 CAN Junction Connector)

        		 *b

        to No. 11 Junction Connector

        (for Sub Bus 2)
        *c

        to Network Gateway ECU

        (for Sub Bus 2)

        		 *d

        to Blind Spot Monitor Sensor LH

        (w/ Blind Spot Monitor System)

        (for Sub Bus 2)
        *e

        to No. 10 CAN Junction Connector

        (for Sub Bus 1)

        		 *f

        to No. 5 CAN Junction Connector

        (for Sub Bus 1)
        *g

        to Rear Television Camera Assembly

        (w/ Parking Assist Monitor System without Parallel Parking Assist Function)

        (for Sub Bus 1)

        		 - -

      2. Check the connection diagram of the components which are connected to the No. 9 CAN junction connector.

        Terminal No. (Symbol) Wiring Color Connected to
        U53-1 (CANH) BE

        No. 11 junction connector

        (for Sub bus 2)
        U53-12 (CANL) B
        U53-2 (CANH) V

        Network gateway ECU

        (for Sub bus 2)
        U53-13 (CANL) B
        U53-3 (CANH) R

        Blind spot monitor sensor LH*1

        (for Sub bus 2)
        U53-14 (CANL) B
        U53-9 (CANH) LG

        No. 10 CAN junction connector

        (for Sub bus 1)
        U53-20 (CANL) B
        U53-10 (CANH) L

        No. 5 CAN junction connector

        (for Sub bus 1)
        U53-21 (CANL) B
        U53-11 (CANH) W

        Rear television camera assembly*2

        (for Sub bus 1)
        U53-22 (CANL) B

        • *1: w/ Blind Spot Monitor System

        • *2: w/ Parking Assist Monitor System without Parallel Parking Assist Function

  7. NO. 10 CAN JUNCTION CONNECTOR (for LHD)


    1. Check the No. 10 CAN junction connector.


      1. Connection diagram

        B004FE0C97
        *a

        Front view of wire harness connector

        (to No. 10 CAN Junction Connector)

        		 *b

        to No. 9 CAN Junction Connector

        (for Sub Bus 1)
        *c

        to Position Control ECU and Switch Assembly RH

        (w/ Seat Position Memory System)

        (for Sub Bus 1)

        		 *d

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

        (w/ Seat Position Memory System)

        (for Sub Bus 1)
        *e

        to No. 1 CAN Junction Terminal

        (for Sub Bus 1)

        		 - -

      2. Check the connection diagram of the components which are connected to the No. 10 CAN junction connector.

        Terminal No. (Symbol) Wiring Color Connected to
        T32-7 (CANH) LG

        No. 9 CAN junction connector

        (for Sub bus 1)
        T32-18 (CANL) B
        T32-9 (CANH) R

        Position control ECU and switch assembly RH*

        (for Sub bus 1)
        T32-20 (CANL) B
        T32-10 (CANH) W

        Outer mirror control ECU assembly (for front passenger side)*

        (for Sub bus 1)
        T32-21 (CANL) B
        T32-11 (CANH) P

        No. 1 CAN junction terminal

        (for Sub bus 1)
        T32-22 (CANL) B

        • *: w/ Seat Position Memory System

  8. NO. 11 JUNCTION CONNECTOR (for LHD)


    1. Check the No. 11 junction connector.


      1. Connection diagram

        B004FN3C29
        *a

        Front view of wire harness connector

        (to No. 11 Junction Connector)

        		 *b

        to No. 5 CAN Junction Connector

        (for Sub Bus 2)
        *c

        to No. 9 CAN Junction Connector

        (for Sub Bus 2)

        		 *d

        to Lane Departure Warning Camera

        (w/ Lane Departure Alert System)

        (for Sub Bus 2)

      2. Check the connection diagram of the components which are connected to the No. 11 junction connector.

        Terminal No. (Symbol) Wiring Color Connected to
        W13-1 (CANH) LG

        No. 5 CAN junction connector

        (for Sub bus 2)
        W13-7 (CANL) B
        W13-2 (CANH) BE

        No. 9 CAN junction connector

        (for Sub bus 2)
        W13-8 (CANL) B
        W13-3 (CANH) R

        Lane departure warning camera*

        (for Sub bus 2)
        W13-9 (CANL) B

        • *: w/ Lane Departure Alert System

  9. NO. 1 CAN JUNCTION TERMINAL (for LHD)


    1. Check the No. 1 CAN junction terminal.


      1. Connection diagram

        B004FF9C47
        *a

        Front view of wire harness connector

        (to No. 1 CAN Junction Terminal)

        		 *b

        to No. 10 CAN Junction Connector

        (for Sub Bus 1)

      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
        O101-3 (CANH) P

        No. 10 CAN junction connector

        (for Sub bus 1)
        O101-2 (CANL) B

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


    1. Check the No. 1 CAN junction connector.


      1. Connection diagram

        B004G5AC83
        *a

        Front view of wire harness connector

        (to No. 1 CAN Junction Connector)

        		 *b

        to No. 2 CAN Junction Connector

        (for V Bus)
        *c

        to Combination Meter Assembly

        (for V Bus)

        		 *d

        to Radio Receiver Assembly

        (for V Bus)
        *e

        to Airbag ECU Assembly

        (for V Bus)

        		 *f

        to Yaw Rate Sensor

        (for V Bus)
        *g

        to Skid Control ECU Assembly

        (for V Bus)

        		 *h

        to Steering Sensor

        (for V Bus)
        *i

        to DLC3

        (for V Bus)

        		 *j

        to Stereo Component Equalizer Assembly

        (w/ ASC System)

        (for V Bus)

      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
        O104-1 (CANH) L

        No. 2 CAN junction connector

        (for V bus)
        O104-11 (CANL) B
        O104-2 (CANH) LG

        Combination meter assembly

        (for V bus)
        O104-12 (CANL) B
        O104-3 (CANH) R

        Radio receiver assembly

        (for V bus)
        O104-13 (CANL) B
        O104-4 (CANH) BE

        Airbag ECU assembly

        (for V bus)
        O104-14 (CANL) B
        O104-5 (CANH) G

        Yaw rate sensor

        (for V bus)
        O104-15 (CANL) B
        O104-6 (CANH) SB

        Skid control ECU assembly

        (for V bus)
        O104-16 (CANL) B
        O104-7 (CANH) P

        Steering sensor

        (for V bus)
        O104-17 (CANL) B
        O104-8 (CANH) W

        DLC3

        (for V bus)
        O104-18 (CANL) B
        O104-9 (CANH) V

        Stereo component equalizer assembly*

        (for V bus)
        O104-19 (CANL) B

        • *: w/ ASC System

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


    1. Check the No. 2 CAN junction connector.


      1. Connection diagram

        B004G5AC84
        *a

        Front view of wire harness connector

        (to No. 2 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 ECM

        (for V Bus)
        *e

        to Headlight Leveling ECU Assembly

        (for Single Beam Headlight)

        (for V Bus)

        		 *f

        to Network Gateway ECU

        (w/ Network Gateway ECU)

        (for V Bus)
        *g

        to Air Conditioning Amplifier Assembly

        (for V Bus)

        		 *h

        to Hybrid Vehicle Control ECU Assembly

        (for V Bus)
        *i

        to Certification ECU (Smart Key ECU Assembly)

        (for V Bus)

        		 *j

        to Power Steering ECU Assembly

        (for V Bus)

      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
        O105-1 (CANH) L

        No. 1 CAN junction connector

        (for V bus)
        O105-11 (CANL) B
        O105-2 (CANH) Y

        Main body ECU (multiplex network body ECU)

        (for V bus)
        O105-12 (CANL) B
        O105-3 (CANH) R

        ECM

        (for V bus)
        O105-13 (CANL) B
        O105-4 (CANH) LG

        Headlight leveling ECU assembly*1

        (for V bus)
        O105-14 (CANL) B
        O105-5 (CANH) BE

        Network gateway ECU*2

        (for V bus)
        O105-15 (CANL) B
        O105-6 (CANH) P

        Air conditioning amplifier assembly

        (for V bus)
        O105-16 (CANL) B
        O105-7 (CANH) SB

        Hybrid vehicle control ECU assembly

        (for V bus)
        O105-17 (CANL) B
        O105-8 (CANH) W

        Certification ECU (smart key ECU assembly)

        (for V bus)
        O105-18 (CANL) B
        O105-10 (CANH) G

        Power steering ECU assembly

        (for V bus)
        O105-20 (CANL) B

        • *1: for Single Beam Headlight

        • *2: w/ Network Gateway ECU

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


    1. Check the No. 6 CAN junction connector.


      1. Connection diagram

        B004FE0C98
        *a

        Front view of wire harness connector

        (to No. 6 CAN Junction Connector)

        		 *b

        to Multiplex Tilt and Telescopic ECU

        (w/ Power Tilt and Power Telescopic System)

        (for Sub Bus 1)
        *c

        to No. 9 CAN Junction Connector

        (for Sub Bus 1)

        		 *d

        to Main Body ECU (Multiplex Network Body ECU)

        (for Sub Bus 1)
        *e

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

        (w/ Seat Position Memory System)

        (for Sub Bus 1)

        		 *f

        to Headlight ECU Sub-assembly

        (for Triple Beam Headlight)

        (for Sub Bus 1)
        *g

        to Position Control ECU and Switch Assembly LH

        (w/ Seat Position Memory System)

        (for Sub Bus 1)

        		 *h

        to No. 7 CAN Junction Connector

        (for Sub Bus 2)
        *i

        to No. 11 Junction Connector

        (for Sub Bus 2)

        		 *j

        to Clearance Warning ECU Assembly

        (w/ LEXUS Parking Assist-sensor System)

        (for Sub Bus 2)

      2. Check the connection diagram of the components which are connected to the No. 6 CAN junction connector.

        Terminal No. (Symbol) Wiring Color Connected to
        O107-1 (CANH) BE

        Multiplex tilt and telescopic ECU*1

        (for Sub bus 1)
        O107-12 (CANL) B
        O107-2 (CANH) L

        No. 9 CAN junction connector

        (for Sub bus 1)
        O107-13 (CANL) B
        O107-3 (CANH) P

        Main body ECU (multiplex network body ECU)

        (for Sub bus 1)
        O107-14 (CANL) B
        O107-4 (CANH) W

        Outer mirror control ECU assembly (for front passenger side)*2

        (for Sub bus 1)
        O107-15 (CANL) B
        O107-5 (CANH) V

        Headlight ECU sub-assembly*3

        (for Sub bus 1)
        O107-16 (CANL) B
        O107-6 (CANH) R

        Position control ECU and switch assembly LH*2

        (for Sub bus 1)
        O107-17 (CANL) B
        O107-7 (CANH) Y

        No. 7 CAN junction connector

        (for Sub bus 2)
        O107-18 (CANL) B
        O107-8 (CANH) LG

        No. 11 junction connector

        (for Sub bus 2)
        O107-19 (CANL) B
        O107-11 (CANH) SB

        Clearance warning ECU assembly*4

        (for Sub bus 2)
        O107-22 (CANL) B

        • *1: w/ Power Tilt and Power Telescopic System

        • *2: w/ Seat Position Memory System

        • *3: for Triple Beam Headlight

        • *4: w/ LEXUS Parking Assist-sensor System

  13. NO. 7 CAN JUNCTION CONNECTOR (for RHD)


    1. Check the No. 7 CAN junction connector.


      1. Connection diagram

        B004FE0C99
        *a

        Front view of wire harness connector

        (to No. 7 CAN Junction Connector)

        		 *b

        to Hybrid Vehicle Control ECU Assembly

        (for Sub Bus 15)
        *c

        to Skid Control ECU Assembly

        (for Sub Bus 15)

        		 *d

        to ECM

        (for Sub Bus 15)
        *e

        to Absorber Control ECU

        (w/ AVS System)

        (for Sub Bus 2)

        		 *f

        to Driving Support ECU Assembly

        (w/ Pre-crash Safety System)

        (for Sub Bus 2)
        *g

        to No. 6 CAN Junction Connector

        (for Sub Bus 2)

        		 *h

        to Network Gateway ECU

        (for Sub Bus 2)

      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
        O108-1 (CANH) R

        Hybrid vehicle control ECU assembly

        (for Sub bus 15)
        O108-12 (CANL) B
        O108-2 (CANH) W

        Skid control ECU assembly

        (for Sub bus 15)
        O108-13 (CANL) B
        O108-3 (CANH) P

        ECM

        (for Sub bus 15)
        O108-14 (CANL) B
        O108-7 (CANH) SB

        Absorber control ECU*1

        (for Sub bus 2)
        O108-18 (CANL) B
        O108-8 (CANH) G

        Driving support ECU assembly*2

        (for Sub bus 2)
        O108-19 (CANL) B
        O108-9 (CANH) Y

        No. 6 CAN junction connector

        (for Sub bus 2)
        O108-20 (CANL) B
        O108-10 (CANH) GR

        Network gateway ECU

        (for Sub bus 2)
        O108-21 (CANL) B

        • *1: w/ AVS System

        • *2: w/ Pre-crash Safety System

  14. NO. 9 CAN JUNCTION CONNECTOR (for RHD)


    1. Check the No. 9 CAN junction connector.


      1. Connection diagram

        B004E0SC19
        *a

        Front view of wire harness connector

        (to No. 9 CAN Junction Connector)

        		 *b

        to No. 11 Junction Connector

        (for Sub Bus 2)
        *c

        to Hybrid Vehicle Control ECU Assembly

        (for Sub Bus 2)

        		 *d

        to Blind Spot Monitor Sensor LH

        (w/ Blind Spot Monitor System)

        (for Sub Bus 2)
        *e

        to No. 10 CAN Junction Connector

        (for Sub Bus 1)

        		 *f

        to No. 6 CAN Junction Connector

        (for Sub Bus 1)
        *g

        to Rear Television Camera Assembly

        (w/ Parking Assist Monitor System without Parallel Parking Assist Function)

        (for Sub Bus 1)

        		 - -

      2. Check the connection diagram of the components which are connected to the No. 9 CAN junction connector.

        Terminal No. (Symbol) Wiring Color Connected to
        U53-1 (CANH) BE

        No. 11 junction connector

        (for Sub bus 2)
        U53-12 (CANL) B
        U53-2 (CANH) V

        Hybrid vehicle control ECU assembly

        (for Sub bus 2)
        U53-13 (CANL) B
        U53-3 (CANH) R

        Blind spot monitor sensor LH*1

        (for Sub bus 2)
        U53-14 (CANL) B
        U53-9 (CANH) LG

        No. 10 CAN junction connector

        (for Sub bus 1)
        U53-20 (CANL) B
        U53-10 (CANH) L

        No. 6 CAN junction connector

        (for Sub bus 1)
        U53-21 (CANL) B
        U53-11 (CANH) W

        Rear television camera assembly*2

        (for Sub bus 1)
        U53-22 (CANL) B

        • *1: w/ Blind Spot Monitor System

        • *2: w/ Parking Assist Monitor System without Parallel Parking Assist Function

  15. NO. 10 CAN JUNCTION CONNECTOR (for RHD)


    1. Check the No. 10 CAN junction connector.


      1. Connection diagram

        B004FE0C97
        *a

        Front view of wire harness connector

        (to No. 10 CAN Junction Connector)

        		 *b

        to No. 9 CAN Junction Connector

        (for Sub Bus 1)
        *c

        to Position Control ECU and Switch Assembly RH

        (w/ Seat Position Memory System)

        (for Sub Bus 1)

        		 *d

        to Outer Mirror Control ECU Assembly (for Driver side)

        (w/ Seat Position Memory System)

        (for Sub Bus 1)
        *e

        to No. 1 CAN Junction Terminal

        (for Sub Bus 1)

        		 - -

      2. Check the connection diagram of the components which are connected to the No. 10 CAN junction connector.

        Terminal No. (Symbol) Wiring Color Connected to
        T32-7 (CANH) LG

        No. 9 CAN junction connector

        (for Sub bus 1)
        T32-18 (CANL) B
        T32-9 (CANH) R

        Position control ECU and switch assembly RH*

        (for Sub bus 1)
        T32-20 (CANL) B
        T32-10 (CANH) W

        Outer mirror control ECU assembly (for driver side)*

        (for Sub bus 1)
        T32-21 (CANL) B
        T32-11 (CANH) P

        No. 1 CAN junction terminal

        (for Sub bus 1)
        T32-22 (CANL) B

        • *: w/ Seat Position Memory System

  16. NO. 11 JUNCTION CONNECTOR (for RHD)


    1. Check the No. 11 junction connector.


      1. Connection diagram

        B004FN3C29
        *a

        Front view of wire harness connector

        (to No. 11 Junction Connector)

        		 *b

        to No. 6 CAN Junction Connector

        (for Sub Bus 2)
        *c

        to No. 9 CAN Junction Connector

        (for Sub Bus 2)

        		 *d

        to Lane Departure Warning Camera

        (w/ Lane Departure Alert System)

        (for Sub Bus 2)

      2. Check the connection diagram of the components which are connected to the No. 11 junction connector.

        Terminal No. (Symbol) Wiring Color Connected to
        W13-1 (CANH) LG

        No. 6 CAN junction connector

        (for Sub bus 2)
        W13-7 (CANL) B
        W13-2 (CANH) BE

        No. 9 CAN junction connector

        (for Sub bus 2)
        W13-8 (CANL) B
        W13-3 (CANH) R

        Lane departure warning camera*

        (for Sub bus 2)
        W13-9 (CANL) B

        • *: w/ Lane Departure Alert System

  17. NO. 1 CAN JUNCTION TERMINAL (for RHD)


    1. Check the No. 1 CAN junction terminal.


      1. Connection diagram

        B004FF9C47
        *a

        Front view of wire harness connector

        (to No. 1 CAN Junction Terminal)

        		 *b

        to No. 10 CAN Junction Connector

        (for Sub Bus 1)

      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
        O101-3 (CANH) P

        No. 10 CAN junction connector

        (for Sub bus 1)
        O101-2 (CANL) B

  18. DLC3


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

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

      B004F7BC11
      *1 DLC3 - -

    3. ECM

      B004FN1C23
      4. *a

      Component without harness connected

      (ECM)

      		 - -

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

  2. Disconnect the A72 and F6 ECM connectors.

    B004EMZC29
    *a

    Front view of wire harness connector

    (to ECM)

    		 - -

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

  4. HYBRID VEHICLE CONTROL ECU ASSEMBLY


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

    2. B004EV4C97
    5. *a

    Rear view of wire harness connector

    (to Hybrid Vehicle Control ECU Assembly)

Disconnect the O142 hybrid vehicle control ECU assembly connector.

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

  • B004G18C57
    • *a

    Rear view of wire harness connector

    (to Hybrid Vehicle Control ECU Assembly)

    Disconnect the O141 hybrid vehicle control ECU assembly connector.

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

  • COMBINATION METER ASSEMBLY


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

    2. B004EYKC74
    • *a

    Front view of wire harness connector

    (to Combination Meter Assembly)

    Disconnect the O3 combination meter assembly connector.

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

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

    B004FQWC50
    • *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))

    		 - -

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

    2. Disconnect the O1 and O2 main body ECU (multiplex network body ECU) connectors.

      B004GFLC24
      *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 ASSEMBLY


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

      2. B004GDMC05
      5. *a

      Front view of wire harness connector

      (to Skid Control ECU Assembly)

      Disconnect the A23 skid control ECU assembly connector.

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

    6. STEERING SENSOR


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

      2. B004EE6C13
      7. *a

      Front view of wire harness connector

      (to Steering Sensor)

      Disconnect the O28 steering sensor connector.

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

    8. YAW RATE SENSOR

      B004EDYC11
      9. *a

      Component without harness connected

      (Yaw Rate Sensor)

      		 - -

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

      2. Disconnect the O81 yaw rate sensor connector.

        B004FMQC03
        *1 DLC3 - -
        *a

        Front view of wire harness connector

        (to Yaw Rate Sensor)

        		 - -

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

      4. POWER STEERING ECU ASSEMBLY


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

        2. B004GIAC69
        5. *a

        Front view of wire harness connector

        (to Power Steering ECU Assembly)

        Disconnect the A18 power steering ECU assembly connector.

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

      6. AIRBAG ECU ASSEMBLY

        B004EZ2C27
        7. *a

        Component without harness connected

        (Airbag ECU Assembly)

        		 - -

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

        2. Disconnect the O50 airbag ECU assembly connector.

          B004GGMC12
          *1 DLC3 - -
          *a

          Front view of wire harness connector

          (to Airbag ECU Assembly)

          		 - -

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

        4. CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


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

          2. B004GTDC27
          5. *a

          Front view of wire harness connector

          (to Certification ECU (Smart Key ECU Assembly))

          Disconnect the O6 certification ECU (smart key ECU assembly) connector.

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

        6. RADIO RECEIVER ASSEMBLY (w/ Navigation System)


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

          2. B004ELXC83
          7. *a

          Front view of wire harness connector

          (to Radio Receiver Assembly)

          Disconnect the O57 radio receiver assembly connector.

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

        8. RADIO RECEIVER ASSEMBLY (w/ Audio and Visual System with Parallel Parking Assist Function)


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

          2. B004ELXC83
          9. *a

          Front view of wire harness connector

          (to Radio Receiver Assembly)

          Disconnect the O57 radio receiver assembly connector.

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

        10. RADIO RECEIVER ASSEMBLY (w/ Audio and Visual System without Parallel Parking Assist Function)

          B004G8TC15
          11. *a

          Component without harness connected

          (Radio Receiver Assembly)

          		 - -

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

          2. Disconnect the O68 and O70 radio receiver assembly connectors.

            B004FPTC62
            *a

            Front view of wire harness connector

            (to Radio Receiver Assembly)

            		 - -

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


            • *1: 6 Speakers

            • *2: 10 Speakers

          4. AIR CONDITIONING AMPLIFIER ASSEMBLY

            B004E7XC14
            5. *a

            Component without harness connected

            (Air Conditioning Amplifier Assembly)

            		 - -

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

            2. Disconnect the O9 and O10 air conditioning amplifier assembly connectors.

              B004FVMC05
              *a

              Front view of wire harness connector

              (to Air Conditioning Amplifier Assembly)

              		 - -

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

            4. NETWORK GATEWAY ECU (w/ Network Gateway ECU)


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

              2. B004F6YC83
              5. *a

              Front view of wire harness connector

              (to Network Gateway ECU)

              Disconnect the O46 network gateway ECU connector.

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


              • *1: for LHD

              • *2: for RHD

            6. HEADLIGHT LEVELING ECU ASSEMBLY (for Single Beam Headlight)

              B004F5CC15
              7. *a

              Component without harness connected

              (Headlight Leveling ECU Assembly)

              		 - -

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

              2. Disconnect the A61 headlight leveling ECU assembly connector.

                B004ER7C08
                *1 DLC3 - -
                *a

                Front view of wire harness connector

                (to Headlight Leveling ECU Assembly)

                		 - -

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

              4. HEADLIGHT ECU SUB-ASSEMBLY (for Triple Beam Headlight)

                B004EMNC02
                5. *a

                Component without harness connected

                (Headlight ECU Sub-assembly)

                		 - -

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

                2. Disconnect the A36 headlight ECU sub-assembly connector.

                  B004E8VC02
                  *1 DLC3 - -
                  *a

                  Front view of wire harness connector

                  (to Headlight ECU Sub-assembly)

                  		 - -

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

                4. OUTER MIRROR CONTROL ECU ASSEMBLY (for Driver Side) (w/ Seat Position Memory System)


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

                  2. B004GB7C32
                  5. *A for LHD
                  *B for RHD
                  *a

                  Front view of wire harness connector

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

                  Disconnect the R12 or S12 outer mirror control ECU assembly (for driver side) connector.

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

                6. OUTER MIRROR CONTROL ECU ASSEMBLY (for Front Passenger Side) (w/ Seat Position Memory System)


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

                  2. B004GB7C33
                  7. *A for LHD
                  *B for RHD
                  *a

                  Front view of wire harness connector

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

                  Disconnect the R12 or S12 outer mirror control ECU assembly (for front passenger side) connector.

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

                8. POSITION CONTROL ECU AND SWITCH ASSEMBLY LH (w/ Seat Position Memory System)

                  B004F20C27
                  9. *a

                  Component without harness connected

                  (Position Control ECU and Switch Assembly LH)

                  		 - -

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

                  2. Disconnect the b4 and b5 position control ECU and switch assembly LH connectors.

                    B004E40C31
                    *a

                    Front view of wire harness connector

                    (to Position Control ECU and Switch Assembly LH)

                    		 - -

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

                  4. POSITION CONTROL ECU AND SWITCH ASSEMBLY RH (w/ Seat Position Memory System)

                    B004FL9C07
                    5. *a

                    Component without harness connected

                    (Position Control ECU and Switch Assembly RH)

                    		 - -

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

                    2. Disconnect the a4 and a5 position control ECU and switch assembly RH connectors.

                      B004E40C32
                      *a

                      Front view of wire harness connector

                      (to Position Control ECU and Switch Assembly RH)

                      		 - -

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

                    4. MULTIPLEX TILT AND TELESCOPIC ECU (w/ Power Tilt and Power Telescopic System)


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

                      2. B004GMNC52
                      5. *a

                      Front view of wire harness connector

                      (to Multiplex Tilt and Telescopic ECU)

                      Disconnect the O18 multiplex tilt and telescopic ECU connector.

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

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

                      B004EWHC35
                      7. *a

                      Component without harness connected

                      (Blind Spot Monitor Sensor LH)

                      		 - -

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

                      2. Disconnect the U47 blind spot monitor sensor LH connector.

                        B004EC2C15
                        *1 DLC3 - -
                        *a

                        Front view of wire harness connector

                        (to Blind Spot Monitor Sensor LH)

                        		 - -

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

                      4. DRIVING SUPPORT ECU ASSEMBLY (w/ Pre-crash Safety System)


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

                        2. B004F57C06
                        5. *1 DLC3
                        *a

                        Front view of wire harness connector

                        (to Driving Support ECU Assembly)

                        Disconnect the Q1 driving support ECU assembly connector.

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

                      6. MILLIMETER WAVE RADAR SENSOR ASSEMBLY (w/ Pre-crash Safety System)


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

                        2. B004G8IC13
                        7. *1 DLC3
                        *a

                        Front view of wire harness connector

                        (to Millimeter Wave Radar Sensor Assembly)

                        Disconnect the B7 millimeter wave radar sensor assembly connector.

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

                      8. CLEARANCE WARNING ECU ASSEMBLY (w/ LEXUS Parking Assist-sensor System)


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

                        2. B004GDUC07
                        9. *1 DLC3
                        *a

                        Front view of wire harness connector

                        (to Clearance Warning ECU Assembly)

                        Disconnect the O43 clearance warning ECU assembly connector.

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

                      10. LANE DEPARTURE WARNING CAMERA (w/ Lane Departure Alert System)


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

                        2. B004FY2C07
                        11. *1 DLC3
                        *a

                        Front view of wire harness connector

                        (to Lane Departure Warning Camera)

                        Disconnect the W9 lane departure warning camera connector.

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

                      12. ABSORBER CONTROL ECU (w/ AVS System)


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

                        2. B004EQDC07
                        13. *1 DLC3
                        *a

                        Front view of wire harness connector

                        (to Absorber Control ECU)

                        Disconnect the O38 absorber control ECU connector.

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

                      14. STEREO COMPONENT EQUALIZER ASSEMBLY (w/ ASC System)


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

                        2. B004FDTC21
                        15. *a

                        Front view of wire harness connector

                        (to Stereo Component Equalizer Assembly)

                        Disconnect the O35 stereo component equalizer assembly connector.

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

                      16. REAR TELEVISION CAMERA ASSEMBLY (w/ Parking Assist Monitor System without Parallel Parking Assist Function)

                        B004ETWC05
                        17. *a

                        Component without harness connected

                        (Rear Television Camera Assembly)

                        		 - -

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

                        2. Disconnect the U40 rear television camera assembly connector.

                          B004ETIC07
                          *1 DLC3 - -
                          *a

                          Front view of wire harness connector

                          (to Rear Television Camera Assembly)

                          		 - -

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