CAN COMMUNICATION SYSTEM TERMINALS OF ECU

Tip:

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

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

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

      CAUTION:

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

      Note:

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

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

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

  2. JUNCTION CONNECTOR

    1. NO. 1 JUNCTION CONNECTOR

      1. G82 No. 1 junction connector

        C219227C01

        *a

        for No. 2 Junction Connector

        *b

        for Four Wheel Drive Control ECU

        *c

        for Certification ECU

        *d

        for Power Management Control ECU (V1 Bus)

        *e

        for ECM (V1 Bus)

        -

        -

        No. 1 Junction Connector

        Wiring Color

        Connect to

        G82-1 (CANH)

        GR

        No. 2 junction connector

        G82-12 (CANL)

        W

        G82-2 (CANH)

        G

        Four wheel drive control ECU

        G82-13 (CANL)

        W

        G82-3 (CANH)

        P

        Certification ECU

        G82-14 (CANL)

        W

        G82-4 (CANH)

        BR

        Power management control ECU (V1 bus)

        G82-15 (CANL)

        W

        G82-6 (CANH)

        R

        ECM (V1 bus)

        G82-17 (CANL)

        W

      2. G83 No. 1 junction connector

        C219227C02

        *a

        for No. 3 Junction Connector (V2 Bus)

        *b

        for Power Management Control ECU (V2 Bus)

        *c

        for Parking Assist ECU (w/ LEXUS Parking Assist-sensor System [w/ Parking Assist System and/or Side Monitor System])

        for Clearance Warning ECU Assembly (w/ LEXUS Parking Assist-sensor System [w/o Parking Assist System and/or Side Monitor System])

        *d

        for Driving Support ECU Assembly (w/ Pre-crash Safety System) (V2 Bus)

        *e

        for ECM (Power Management Bus)

        *f

        for Air Conditioning Amplifier Assembly

        *g

        for Power Management Control ECU (Power Management Bus)

        -

        -

        No. 1 Junction Connector

        Wiring Color

        Connect to

        G83-1 (CANH)

        P

        No. 3 junction connector (V2 bus)

        G83-12 (CANL)

        W

        G83-2 (CANH)

        V

        Power management control ECU (V2 bus)

        G83-13 (CANL)

        W

        G83-3 (CANH)

        B

        Parking assist ECU*1 or clearance warning ECU assembly*2

        G83-14 (CANL)

        W

        G83-4 (CANH)

        G

        Driving support ECU assembly*3 (V2 bus)

        G83-15 (CANL)

        W

        G83-9 (CANH)

        BR

        ECM (power management bus)

        G83-20 (CANL)

        GR

        G83-10 (CANH)

        BR

        Air conditioning amplifier assembly

        G83-21 (CANL)

        Y

        G83-11 (CANH)

        BR

        Power management control ECU (power management bus) (V2 Bus)

        G83-22 (CANL)

        W

        • *1: w/ LEXUS Parking Assist-sensor System (w/ Parking Assist System and/or Side Monitor System)

        • *2: w/ LEXUS Parking Assist-sensor System (w/o Parking Assist System and/or Side Monitor System)

        • *3: w/ Pre-crash Safety System

      3. G84 No. 1 junction connector

        C219227C03

        *a

        for Outer Mirror Control ECU Assembly RH

        *b

        for Driving Support Switch Control ECU

        *c

        for No. 6 Junction Connector

        *d

        for No. 3 Junction Connector (MS Bus)

        No. 1 Junction Connector

        Wiring Color

        Connect to

        G84-1 (CANH)

        G

        Outer mirror control ECU assembly RH

        G84-12 (CANL)

        W

        G84-2 (CANH)

        R

        Driving support switch control ECU

        G84-13 (CANL)

        W

        G84-3 (CANH)

        LG

        No. 6 junction connector

        G84-14 (CANL)

        W

        G84-4 (CANH)

        V

        No. 3 junction connector (MS bus)

        G84-15 (CANL)

        W

    2. NO. 2 JUNCTION CONNECTOR

      C219227C04

      *a

      for No. 1 Junction Connector (V1 Bus)

      *b

      for Display and Navigation Module Display (w/ Navigation System)

      *c

      for Spiral with Sensor Cable Sub-assembly

      *d

      for Yaw Rate Sensor Assembly

      *e

      for Center Airbag Sensor Assembly

      *f

      for No. 3 Junction Connector (V1 Bus)

      No. 2 Junction Connector

      Wiring Color

      Connect to

      G85-1 (CANH)

      GR

      No. 1 junction connector (V1 bus)

      G85-12 (CANL)

      W

      G85-2 (CANH)

      P

      Display and navigation module display*

      G85-13 (CANL)

      W

      G85-3 (CANH)

      G

      Spiral with sensor cable sub-assembly

      G85-14 (CANL)

      W

      G85-4 (CANH)

      R

      Yaw rate sensor assembly

      G85-15 (CANL)

      W

      G85-5 (CANH)

      Y

      Center airbag sensor assembly

      G85-16 (CANL)

      W

      G85-6 (CANH)

      LG

      No. 3 junction connector (V1 bus)

      G85-17 (CANL)

      W

      • *: w/ Navigation System

    3. NO. 3 JUNCTION CONNECTOR

      1. G79 No. 3 junction connector

        C219227C05

        *a

        for No. 2 Junction Connector

        *b

        for Main Body ECU (Multiplex Network Body ECU) (V1 Bus)

        *c

        for DLC3

        *d

        for No. 4 Junction Connector (V1 Bus)

        No. 3 Junction Connector

        Wiring Color

        Connect to

        G79-1 (CANH)

        LG

        No. 2 junction connector

        G79-12 (CANL)

        W

        G79-3 (CANH)

        L

        Main body ECU (multiplex network body ECU) (V1 bus)

        G79-14 (CANL)

        W

        G79-5 (CANH)

        R

        DLC3

        G79-16 (CANL)

        W

        G79-6 (CANH)

        B

        No. 4 junction connector (V1 Bus)

        G79-17 (CANL)

        W

      2. G80 No. 3 junction connector

        C219227C06

        *a

        for No. 1 Junction Connector (V2 Bus)

        *b

        for No. 4 Junction Connector (V2 Bus)

        *c

        for Stabilizer Control ECU

        *d

        for Seat Belt Control ECU (w/ Pre-crash Safety System)

        *e

        for Driving Support ECU Assembly (w/ Pre-crash Safety System) (Sensor Bus)

        *f

        for Millimeter Wave Radar Sensor Assembly (w/ Pre-crash Safety System)

        No. 3 Junction Connector

        Wiring Color

        Connect to

        G80-1 (CANH)

        P

        No. 1 junction connector (V2 bus)

        G80-12 (CANL)

        W

        G80-3 (CANH)

        B

        No. 4 junction connector (V2 Bus)

        G80-14 (CANL)

        W

        G80-5 (CANH)

        V

        Stabilizer control ECU

        G80-16 (CANL)

        W

        G80-6 (CANH)

        L

        Seat belt control ECU*

        G80-17 (CANL)

        W

        G80-9 (CANH)

        L

        Driving support ECU assembly (sensor bus)*

        G80-20 (CANL)

        W

        G80-11 (CANH)

        LG

        Millimeter wave radar sensor assembly*

        G80-22 (CANL)

        W

        • *: w/ Pre-crash Safety System

      3. G81 No. 3 junction connector

        C219227C07

        *a

        for Outer Mirror Control ECU Assembly LH

        *b

        for Front Power Seat Switch LH

        *c

        for Multiplex Tilt and Telescopic ECU

        *d

        for Main Body ECU (Multiplex Network Body ECU) (MS Bus)

        *e

        for No. 1 Junction Connector (MS Bus)

        -

        -

        No. 3 Junction Connector

        Wiring Color

        Connect to

        G81-1 (CANH)

        B

        Outer mirror control ECU assembly LH

        G81-12 (CANL)

        W

        G81-2 (CANH)

        L

        Front power seat switch LH

        G81-13 (CANL)

        W

        G81-3 (CANH)

        GR

        Multiplex tilt and telescopic ECU

        G81-14 (CANL)

        W

        G81-4 (CANH)

        P

        Main body ECU (multiplex network body ECU) (MS bus)

        G81-15 (CANL)

        W

        G81-5 (CANH)

        V

        No. 1 junction connector (MS bus)

        G81-16 (CANL)

        W

    4. NO. 4 JUNCTION CONNECTOR

      C219227C08

      *a

      for No. 5 Junction Connector

      *b

      for No. 3 Junction Connector (V2 Bus)

      *c

      for Suspension Control ECU

      *d

      for Headlight Swivel ECU Assembly (AFS ECU)

      *e

      for No. 3 Junction Connector (V1 Bus)

      *f

      for Combination Meter Assembly

      *g

      for Master Cylinder Solenoid (Skid Control ECU)

      -

      -

      No. 4 Junction Connector

      Wiring Color

      Connect to

      A59-1 (CANH)

      LG

      No. 5 junction connector

      A59-12 (CANL)

      W

      A59-2 (CANH)

      B

      No. 3 junction connector (V2 bus)

      A59-13 (CANL)

      W

      A59-3 (CANH)

      GR

      Suspension control ECU

      A59-14 (CANL)

      W

      A59-4 (CANH)

      V

      Headlight swivel ECU assembly (AFS ECU)

      A59-15 (CANL)

      W

      A59-9 (CANH)

      R

      No. 3 junction connector (V1 bus)

      A59-20 (CANL)

      W

      A59-10 (CANH)

      LG

      Combination meter assembly

      A59-21 (CANL)

      W

      A59-11 (CANH)

      B

      Master cylinder solenoid (skid control ECU)

      A59-22 (CANL)

      W
    5. C210060C03

      *a

      for No. 4 Junction Connector (V2 Bus)

      NO. 5 JUNCTION CONNECTOR

      No. 5 Junction Connector

      Wiring Color

      Connect to

      G86-2 (CANL)

      W

      No. 4 junction connector (V2 bus)

      G86-3 (CANH)

      LG
    6. C210060C05

      *a

      for No. 1 Junction Connector (MS Bus)

      NO. 6 JUNCTION CONNECTOR

      No. 6 Junction Connector

      Wiring Color

      Connect to

      G87-2 (CANN)

      W

      No. 1 junction connector (MS bus)

      G87-3 (CANP)

      LG

  3. CHECK DLC3

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

      CAUTION:

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

      Note:

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

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

    2. H102621N01

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G37-6 (CANH) - G37-14 (CANL)

      R - W

      Engine switch off

      54 to 69 Ω

      G37-6 (CANH) - G37-4 (CG)

      R - W-B

      Engine switch off

      200 Ω or higher

      G37-14 (CANL) - G37-4 (CG)

      W - W-B

      Engine switch off

      200 Ω or higher

      G37-6 (CANH) - G37-16 (BAT)

      R - GR

      Engine switch off

      6 kΩ or higher

      G37-14 (CANL) - G37-16 (BAT)

      W - GR

      Engine switch off

      6 kΩ or higher

  4. CHECK ECM (for 1UR-FE)

    C216694C01

    *A

    for V1 Bus

    *B

    for Power Management Bus

    1. Disconnect the C30, G44 and G45 ECM connectors.

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

      Table 1. for V1 Bus

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G45-32 (CANH) - G45-31 (CANL)

      R - W

      Engine switch off

      108 to 132 Ω

      G45-32 (CANH) - C30-12 (E1)

      R - BR

      Engine switch off

      200 Ω or higher

      G45-31 (CANL) - C30-12 (E1)

      W - BR

      Engine switch off

      200 Ω or higher

      G45-32 (CANH) - G44-24 (BATT)

      R - L

      Engine switch off

      6 kΩ or higher

      G45-31 (CANL) - G44-24 (BATT)

      W - L

      Engine switch off

      6 kΩ or higher
      Table 2. for Power Management Bus

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G45-34 (CANP) - G45-33 (CANN)

      BR - GR

      Engine switch off

      108 to 132 Ω

      G45-34 (CANP) - C30-12 (E1)

      BR - BR

      Engine switch off

      200 Ω or higher

      G45-33 (CANN) - C30-12 (E1)

      GR - BR

      Engine switch off

      200 Ω or higher

      G45-34 (CANP) - G44-24 (BATT)

      BR - L

      Engine switch off

      6 kΩ or higher

      G45-33 (CANN) - G44-24 (BATT)

      GR - L

      Engine switch off

      6 kΩ or higher

  5. CHECK ECM (for 1GR-FE)

    C216694C03

    *A

    for V1 Bus

    *B

    for Power Management Bus

    1. Disconnect the C30, G106 and G107 ECM connectors.

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

      Table 3. for V1 Bus

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G107-32 (CANH) - G107-31 (CANL)

      R - W

      Engine switch off

      108 to 132 Ω

      G107-32 (CANH) - C30-12 (E1)

      R - BR

      Engine switch off

      200 Ω or higher

      G107-31 (CANL) - C30-12 (E1)

      W - BR

      Engine switch off

      200 Ω or higher

      G107-32 (CANH) - G106-24 (BATT)

      R - L

      Engine switch off

      6 kΩ or higher

      G107-31 (CANL) - G106-24 (BATT)

      W - L

      Engine switch off

      6 kΩ or higher
      Table 4. for Power Management Bus

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G107-34 (CANP) - G107-33 (CANN)

      BR - GR

      Engine switch off

      108 to 132 Ω

      G107-34 (CANP) - C30-12 (E1)

      BR - BR

      Engine switch off

      200 Ω or higher

      G107-33 (CANN) - C30-12 (E1)

      GR - BR

      Engine switch off

      200 Ω or higher

      G107-34 (CANP) - G106-24 (BATT)

      BR - L

      Engine switch off

      6 kΩ or higher

      G107-33 (CANN) - G106-24 (BATT)

      GR - L

      Engine switch off

      6 kΩ or higher

  6. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    B238680C03

    *A

    for V1 Bus

    *B

    for MS Bus

    *a

    Main Body ECU (Multiplex Network Body ECU)

    -

    -

    1. Remove the main body ECU (multiplex network body ECU) (Click here).

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

      Table 5. for V1 Bus

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G47-14 (CANH) - G47-13 (CANL)

      L - W

      Engine switch off

      54 to 69 Ω

      G47-14 (CANH) - A-11 (GND1)

      L - None

      Engine switch off

      200 Ω or higher

      G47-13 (CANL) - A-11 (GND1)

      W - None

      Engine switch off

      200 Ω or higher

      G47-14 (CANH) - A-30 (BECU)

      L - None

      Engine switch off

      6 kΩ or higher

      G47-13 (CANL) - A-30 (BECU)

      W - None

      Engine switch off

      6 kΩ or higher
      Table 6. for MS Bus

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G46-9 (CANP) - G46-10 (CANN)

      P - W

      Engine switch off

      108 to 132 Ω

      G46-9 (CANP) - A-11 (GND1)

      P - None

      Engine switch off

      200 Ω or higher

      G46-10 (CANN) - A-11 (GND1)

      W - None

      Engine switch off

      200 Ω or higher

      G46-9 (CANP) - A-30 (BECU)

      P - None

      Engine switch off

      6 kΩ or higher

      G46-10 (CANN) - A-30 (BECU)

      W - None

      Engine switch off

      6 kΩ or higher

  7. CHECK COMBINATION METER ASSEMBLY

    E161130N04

    1. Disconnect the G3 combination meter assembly connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G3-40 (CANH) - G3-39 (CANL)

      LG - W

      Engine switch off

      108 to 132 Ω

      G3-40 (CANH) - G3-1 (EP)

      LG - W-B

      Engine switch off

      200 Ω or higher

      G3-39 (CANL) - G3-1 (EP)

      W - W-B

      Engine switch off

      200 Ω or higher

      G3-40 (CANH) - G3-25 (B)

      LG - L

      Engine switch off

      6 kΩ or higher

      G3-39 (CANL) - G3-25 (B)

      W - L

      Engine switch off

      6 kΩ or higher

  8. CHECK CENTER AIRBAG SENSOR ASSEMBLY

    C216693N01

    1. Disconnect the G1 center airbag sensor assembly connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G1-13 (CANH) - G1-22 (CANL)

      Y - W

      Engine switch off

      54 to 69 Ω

      G1-13 (CANH) - G1-25 (E1)

      Y - W-B

      Engine switch off

      200 Ω or higher

      G1-22 (CANL) - G1-25 (E1)

      W - W-B

      Engine switch off

      200 Ω or higher

      G1-13 (CANH) - G37-16 (BAT)

      Y - GR

      Engine switch off

      6 kΩ or higher

      G1-22 (CANL) - G37-16 (BAT)

      W - GR

      Engine switch off

      6 kΩ or higher

  9. CHECK MASTER CYLINDER SOLENOID (SKID CONTROL ECU)

    C215260N02

    1. Disconnect the A7 master cylinder solenoid (skid control ECU) connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      A7-11 (CANH) - A7-25 (CANL)

      B - W

      Engine switch off

      54 to 69 Ω

      A7-11 (CANH) - A7-1 (GND1)

      B - W-B

      Engine switch off

      200 Ω or higher

      A7-25 (CANL) - A7-1 (GND1)

      W - W-B

      Engine switch off

      200 Ω or higher

      A7-11 (CANH) - A7-2 (+BM1)

      B - B

      Engine switch off

      6 kΩ or higher

      A7-25 (CANL) - A7-2 (+BM1)

      W - B

      Engine switch off

      6 kΩ or higher

  10. CHECK SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY

    C201866N02

    1. Disconnect the G21 spiral with sensor cable sub-assembly connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G21-4 (CANH) - G21-3 (CANL)

      G - W

      Engine switch off

      54 to 69 Ω

      G21-4 (CANH) - G21-2 (ESS)

      G - W-B

      Engine switch off

      200 Ω or higher

      G21-3 (CANL) - G21-2 (ESS)

      W - W-B

      Engine switch off

      200 Ω or higher

      G21-4 (CANH) - G21-6 (BAT)

      G - L

      Engine switch off

      6 kΩ or higher

      G21-3 (CANL) - G21-6 (BAT)

      W - L

      Engine switch off

      6 kΩ or higher

  11. CHECK YAW RATE SENSOR ASSEMBLY

    C213562N01

    1. Disconnect the G40 yaw rate sensor assembly connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G40-3 (CANH) - G40-2 (CANL)

      R - W

      Engine switch off

      54 to 69 Ω

      G40-3 (CANH) - G40-1 (GND)

      R - W-B

      Engine switch off

      200 Ω or higher

      G40-2 (CANL) - G40-1 (GND)

      W - W-B

      Engine switch off

      200 Ω or higher

      G40-3 (CANH) - G37-16 (BAT)

      R - GR

      Engine switch off

      6 kΩ or higher

      G40-2 (CANL) - G37-16 (BAT)

      W - GR

      Engine switch off

      6 kΩ or higher

  12. CHECK CERTIFICATION ECU

    B197893N39

    1. Disconnect the G26 certification ECU connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G26-9 (CANH) - G26-10 (CANL)

      P - W

      Engine switch off

      54 to 69 Ω

      G26-9 (CANH) - G26-15 (E)

      P - W-B

      Engine switch off

      200 Ω or higher

      G26-10 (CANL) - G26-15 (E)

      W - W-B

      Engine switch off

      200 Ω or higher

      G26-9 (CANH) - G26-1 (+B)

      P - V

      Engine switch off

      6 kΩ or higher

      G26-10 (CANL) - G26-1 (+B)

      W - V

      Engine switch off

      6 kΩ or higher

  13. CHECK POWER MANAGEMENT CONTROL ECU

    C201247C02

    *A

    for V1 Bus

    *B

    for V2 Bus

    *C

    for Power Management Bus

    -

    -

    1. Disconnect the G39 power management control ECU connector.

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

      Table 7. for V1 Bus

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G39-14 (CA1H) - G39-13 (CA1L)

      BR - W

      Engine switch off

      54 to 69 Ω

      G39-14 (CA1H) - G39-6 (GND)

      BR - W-B

      Engine switch off

      200 Ω or higher

      G39-13 (CA1L) - G39-6 (GND)

      W - W-B

      Engine switch off

      200 Ω or higher

      G39-14 (CA1H) - G39-1 (AM22)

      BR - B

      Engine switch off

      6 kΩ or higher

      G39-13 (CA1L) - G39-1 (AM22)

      W - B

      Engine switch off

      6 kΩ or higher
      Table 8. for V2 Bus

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G39-26 (CA2H) - G39-25 (CA2L)

      V - W

      Engine switch off

      108 to 132 Ω

      G39-26 (CA2H) - G39-6 (GND)

      V - W-B

      Engine switch off

      200 Ω or higher

      G39-25 (CA2L) - G39-6 (GND)

      W - W-B

      Engine switch off

      200 Ω or higher

      G39-26 (CA2H) - G39-1 (AM22)

      V - B

      Engine switch off

      6 kΩ or higher

      G39-25 (CA2L) - G39-1 (AM22)

      W - B

      Engine switch off

      6 kΩ or higher
      Table 9. for Power Management Bus

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G39-12 (CA3P) - G39-11 (CA3N)

      BR - W

      Engine switch off

      108 to 132 Ω

      G39-12 (CA3P) - G39-6 (GND)

      BR - W-B

      Engine switch off

      200 Ω or higher

      G39-11 (CA3N) - G39-6 (GND)

      W - W-B

      Engine switch off

      200 Ω or higher

      G39-12 (CA3P) - G39-1 (AM22)

      BR - B

      Engine switch off

      6 kΩ or higher

      G39-11 (CA3N) - G39-1 (AM22)

      W - B

      Engine switch off

      6 kΩ or higher

  14. CHECK DISPLAY AND NAVIGATION MODULE DISPLAY (w/ Navigation System)

    E267510E01

    1. Disconnect the H4 display and navigation module display connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      H4-21 (CANH) - H4-22 (CANL)

      W - P

      Engine switch off

      54 to 69 Ω

      H4-21 (CANH) - H4-10 (GND1)

      W - BR

      Engine switch off

      200 Ω or higher

      H4-22 (CANL) - H4-10 (GND1)

      P - BR

      Engine switch off

      200 Ω or higher

      H4-21 (CANH) - H4-1 (+B1)

      W - SB

      Engine switch off

      6 kΩ or higher

      H4-22 (CANL) - H4-1 (+B1)

      P - SB

      Engine switch off

      6 kΩ or higher

  15. CHECK FOUR WHEEL DRIVE CONTROL ECU

    C213564N01

    1. Disconnect the G41 and G42 four wheel drive control ECU connectors.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G41-19 (CANH) - G41-20 (CANL)

      G - W

      Engine switch off

      54 to 69 Ω

      G41-19 (CANH) - G42-4 (GND)

      G - W-B

      Engine switch off

      200 Ω or higher

      G41-20 (CANL) - G42-4 (GND)

      W - W-B

      Engine switch off

      200 Ω or higher

      G41-19 (CANH) - G37-16 (BAT)

      G - GR

      Engine switch off

      6 kΩ or higher

      G41-20 (CANL) - G37-16 (BAT)

      W - GR

      Engine switch off

      6 kΩ or higher

  16. CHECK SUSPENSION CONTROL ECU

    C263445N02

    1. Disconnect the A40 suspension control ECU connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      A40-7 (CANH) - A40-8 (CANL)

      GR - W

      Engine switch off

      54 to 69 Ω

      A40-7 (CANH) - A40-5 (GND)

      GR - W-B

      Engine switch off

      200 Ω or higher

      A40-8 (CANL) - A40-5 (GND)

      W - W-B

      Engine switch off

      200 Ω or higher

      A40-7 (CANH) - A40-3 (B)

      GR - GR

      Engine switch off

      6 kΩ or higher

      A40-8 (CANL) - A40-3 (B)

      W - GR

      Engine switch off

      6 kΩ or higher

  17. CHECK STABILIZER CONTROL ECU

    C214235N01

    1. Disconnect the G57 stabilizer control ECU connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G57-29 (CANH) - G57-28 (CANL)

      V - W

      Engine switch off

      54 to 69 Ω

      G57-29 (CANH) - G57-22 (GND)

      V - W-B

      Engine switch off

      200 Ω or higher

      G57-28 (CANL) - G57-22 (GND)

      W - W-B

      Engine switch off

      200 Ω or higher

      G57-29 (CANH) - G37-16 (BAT)

      V - GR

      Engine switch off

      6 kΩ or higher

      G57-28 (CANL) - G37-16 (BAT)

      W - GR

      Engine switch off

      6 kΩ or higher

  18. CHECK SEAT BELT CONTROL ECU (w/ Pre-crash Safety System)

    C210024N06

    1. Disconnect the G34 and G35 seat belt control ECU connectors.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G35-1 (CANH) - G35-2 (CANL)

      L - W

      Engine switch off

      54 to 69 Ω

      G35-1 (CANH) - G34-8 (PGND)

      L - W-B

      Engine switch off

      200 Ω or higher

      G35-2 (CANL) - G34-8 (PGND)

      W - W-B

      Engine switch off

      200 Ω or higher

      G35-1 (CANH) - G34-7 (+B)

      L - W

      Engine switch off

      6 kΩ or higher

      G35-2 (CANL) - G34-7 (+B)

      W - W

      Engine switch off

      6 kΩ or higher

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

    C220129C01

    *A

    for V2 Bus

    *B

    for Sensor Bus
    Note:

    • As disconnecting the connector to perform inspections may cause DTCs to be stored, clear DTCs after performing inspections.

    • As the connector may be damaged if a load of more than 10 kg (22 lb) is applied to it, do not apply any more load than necessary to the connector.

    1. Disconnect the G43 driving support ECU assembly connector.

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

      Table 10. for V2 Bus

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G43-39 (CA2H) - G43-17 (CA2L)

      G - W

      Engine switch off

      54 to 69 Ω

      G43-39 (CA2H) - G43-25 (GND)

      G - BR

      Engine switch off

      200 Ω or higher

      G43-17 (CA2L) - G43-25 (GND)

      W - BR

      Engine switch off

      200 Ω or higher

      G43-39 (CA2H) - G37-16 (BAT)

      G - GR

      Engine switch off

      6 kΩ or higher

      G43-17 (CA2L) - G37-16 (BAT)

      W - GR

      Engine switch off

      6 kΩ or higher
      Table 11. for Sensor Bus

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G43-40 (CA1P) - G43-18 (CA1N)

      L - W

      Engine switch off

      108 to 132 Ω

      G43-40 (CA1P) - G43-25 (GND)

      L - BR

      Engine switch off

      200 Ω or higher

      G43-18 (CA1N) - G43-25 (GND)

      W - BR

      Engine switch off

      200 Ω or higher

      G43-40 (CA1P) - G37-16 (BAT)

      L - GR

      Engine switch off

      6 kΩ or higher

      G43-18 (CA1N) - G37-16 (BAT)

      W - GR

      Engine switch off

      6 kΩ or higher

  20. CHECK PARKING ASSIST ECU (w/ LEXUS Parking Assist-sensor System [w/ Parking Assist System and/or Side Monitor System])

    E159063N03

    1. Disconnect the I3 parking assist ECU connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      I3-22 (CANH) - I3-21 (CANL)

      B - W

      Engine switch off

      54 to 69 Ω

      I3-22 (CANH) - I3-3 (GND1)

      B - W-B

      Engine switch off

      200 Ω or higher

      I3-21 (CANL) - I3-3 (GND1)

      W - W-B

      Engine switch off

      200 Ω or higher

      I3-22 (CANH) - I3-1 (+B)

      B - L

      Engine switch off

      6 kΩ or higher

      I3-21 (CANL) - I3-1 (+B)

      W - L

      Engine switch off

      6 kΩ or higher

  21. CHECK CLEARANCE WARNING ECU ASSEMBLY (w/ LEXUS Parking Assist-sensor System [w/o Parking Assist System and/or Side Monitor System])

    C217402N01

    1. Disconnect the I1 clearance warning ECU assembly connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      I1-3 (R1) - I1-5 (R2)

      B - W

      Engine switch off

      54 to 69 Ω

      I1-3 (R1) - I1-17 (E)

      B - W-B

      Engine switch off

      200 Ω or higher

      I1-5 (R2) - I1-17 (E)

      W - W-B

      Engine switch off

      200 Ω or higher

      I1-3 (R1) - G37-16 (BAT)

      B - GR

      Engine switch off

      6 kΩ or higher

      I1-5 (R2) - G37-16 (BAT)

      W - GR

      Engine switch off

      6 kΩ or higher

  22. CHECK HEADLIGHT SWIVEL ECU ASSEMBLY (AFS ECU)

    C217403N01

    1. Disconnect the A46 headlight swivel ECU assembly (AFS ECU) connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      A46-12 (CANH) - A46-13 (CANL)

      V - W

      Engine switch off

      54 to 69 Ω

      A46-12 (CANH) - A46-22 (E1)

      V - W-B

      Engine switch off

      200 Ω or higher

      A46-13 (CANL) - A46-22 (E1)

      W - W-B

      Engine switch off

      200 Ω or higher

      A46-12 (CANH) - G37-16 (BAT)

      V - GR

      Engine switch off

      6 kΩ or higher

      A46-13 (CANL) - G37-16 (BAT)

      W - GR

      Engine switch off

      6 kΩ or higher

  23. CHECK MULTIPLEX TILT AND TELESCOPIC ECU

    C215995N03

    1. Disconnect the G33 multiplex tilt and telescopic ECU connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G33-5 (CANP) - G33-14 (CANN)

      GR - W

      Engine switch off

      54 to 69 Ω

      G33-5 (CANP) - G33-11 (GND)

      GR - W-B

      Engine switch off

      200 Ω or higher

      G33-14 (CANN) - G33-11 (GND)

      W - W-B

      Engine switch off

      200 Ω or higher

      G33-5 (CANP) - G33-2 (+B)

      GR - G

      Engine switch off

      6 kΩ or higher

      G33-14 (CANN) - G33-2 (+B)

      W - G

      Engine switch off

      6 kΩ or higher

  24. CHECK FRONT POWER SEAT SWITCH LH

    B219506N06

    1. Disconnect the b4 and b5 front power seat switch LH connectors.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      b5-8 (CANP) - b5-7 (CANN)

      L - W

      Engine switch off

      54 to 69 Ω

      b5-8 (CANP) - b4-2 (GND1)

      L - W-B

      Engine switch off

      200 Ω or higher

      b5-7 (CANN) - b4-2 (GND1)

      W - W-B

      Engine switch off

      200 Ω or higher

      b5-8 (CANP) - b4-7 (+B1)

      L - W

      Engine switch off

      6 kΩ or higher

      b5-7 (CANN) - b4-7 (+B1)

      W - W

      Engine switch off

      6 kΩ or higher

  25. CHECK DRIVING SUPPORT SWITCH CONTROL ECU

    E194339N03

    1. Disconnect the G60 driving support switch control ECU connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      G60-9 (CANP) - G60-10 (CANN)

      R - W

      Engine switch off

      54 to 69 Ω

      G60-9 (CANP) - G60-16 (GND)

      R - W-B

      Engine switch off

      200 Ω or higher

      G60-10 (CANN) - G60-16 (GND)

      W - W-B

      Engine switch off

      200 Ω or higher

      G60-9 (CANP) - G60-6 (+B)

      R - L

      Engine switch off

      6 kΩ or higher

      G60-10 (CANN) - G60-6 (+B)

      W - L

      Engine switch off

      6 kΩ or higher

  26. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY RH

    B209687N16

    1. Disconnect the J8 outer mirror control ECU assembly RH connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      J8-9 (CANP) - J8-8 (CANN)

      G - W

      Engine switch off

      54 to 69 Ω

      J8-9 (CANP) - J8-7 (GND)

      G - W-B

      Engine switch off

      200 Ω or higher

      J8-8 (CANN) - J8-7 (GND)

      W - W-B

      Engine switch off

      200 Ω or higher

      J8-9 (CANP) - J8-6 (CPUB)

      G - L

      Engine switch off

      6 kΩ or higher

      J8-8 (CANN) - J8-6 (CPUB)

      W - L

      Engine switch off

      6 kΩ or higher

  27. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY LH

    B209687N25

    1. Disconnect the K8 outer mirror control ECU assembly LH connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      K8-9 (CANP) - K8-8 (CANN)

      B - W

      Engine switch off

      54 to 69 Ω

      K8-9 (CANP) - K8-7 (GND)

      B - W-B

      Engine switch off

      200 Ω or higher

      K8-8 (CANN) - K8-7 (GND)

      W - W-B

      Engine switch off

      200 Ω or higher

      K8-9 (CANP) - K8-6 (CPUB)

      B - L

      Engine switch off

      6 kΩ or higher

      K8-8 (CANN) - K8-6 (CPUB)

      W - L

      Engine switch off

      6 kΩ or higher

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

    C207482N01

    1. Disconnect the A12 millimeter wave radar sensor assembly connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Switch Condition

      Specified Condition

      A12-4 (CA1P) - A12-3 (CA1N)

      LG - W

      Engine switch off

      108 to 132 Ω

      A12-4 (CA1P) - A12-2 (SGND)

      LG - BR

      Engine switch off

      200 Ω or higher

      A12-3 (CA1N) - A12-2 (SGND)

      W - BR

      Engine switch off

      200 Ω or higher

      A12-4 (CA1P) - G37-16 (BAT)

      LG - GR

      Engine switch off

      6 kΩ or higher

      A12-3 (CA1N) - G37-16 (BAT)

      W - GR

      Engine switch off

      6 kΩ or higher

  29. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

    C215955E07

    1. Disconnect the G13 air conditioning amplifier assembly connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Condition

      Specified Condition

      G13-11 (CANH) - G13-12 (CANL)

      BR - Y

      Engine switch off

      54 to 69 Ω

      G13-11 (CANH) - G13-14 (GND)

      BR - W-B

      Engine switch off

      200 Ω or higher

      G13-12 (CANL) - G13-14 (GND)

      Y - W-B

      Engine switch off

      200 Ω or higher

      G13-11 (CANH) - G13-21 (B)

      BR - V

      Engine switch off

      6 kΩ or higher

      G13-12 (CANL) - G13-21 (B)

      Y - V

      Engine switch off

      6 kΩ or higher