CAN COMMUNICATION SYSTEM(for RHD), Diagnostic DTC:U1002

DTC Code DTC Name
U1002 Lost Communication with Gateway Module (Main Body)

DESCRIPTION


DTC Code DTC Detection Condition Trouble Area
U1002 Main body ECU (multiplex network body ECU) cannot receive signals from all ECUs that have been memorized as those connected to sub bus 1.

  • Open or short in sub bus 1 main line or connector

  • Open or short in sub bus 1 branch line or connector

  • Main body ECU (multiplex network body ECU)

  • Luggage closer motor assembly*1

  • Multiplex network door ECU*2

  • Front multiplex network door ECU LH

  • Multiplex tilt and telescopic ECU

  • Position control ECU assembly RH*3

  • Power seat switch assembly*4

  • Position control ECU assembly LH*5

  • Front multiplex network door ECU RH

  • No. 2 CAN junction terminal

  • No. 5 CAN junction connector

  • No. 7 CAN junction connector

  • No. 10 CAN junction connector

WIRING DIAGRAM

B002BU5E02
B002BFJE01

CAUTION / NOTICE / HINT

Note


  • Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output Click here.

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

  • 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 notice before proceeding with work Click here.

  • After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.

  • DTC check procedure: Turn the power switch on (IG) and wait at least approximately 20 seconds.

  • After the repair, perform CAN Bus Check and check that all the ECUs and sensors connected to the CAN communication system are displayed Click here.

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.

PROCEDURE


  1. CHECK SUB BUS 1


    1. B002BSCE02
      Text in Illustration
      *a

      Component with harness connected

      (Main Body ECU [Multiplex Network Body ECU])
      *b Front view of DLC3

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition Resistance: Malfunction
      N13-9 (CANP) - N13-10 (CANN) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω Below 53 Ω: Short in line
      N13-9 (CANP) - N13-10 (CANN) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω Higher than 70 Ω: Open in CAN main bus line
      N13-9 (CANP) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ: +B short
      N13-10 (CANN) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ: +B short
      N13-9 (CANP) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω: Ground short
      N13-10 (CANN) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω: Ground short
      Result
      Result Proceed to
      OK A
      NG (Open circuit in CAN main bus wire) B
      NG (Short circuit between bus wires) C

      NG


      • Ground short

      • +B short

      		 D

    B

    CHECK FOR OPEN IN CAN BUS WIRE (MAIN BODY ECU) Click here

    C

    CHECK FOR SHORT IN CAN BUS WIRES (MAIN BODY ECU) Click here

    D

    CHECK FOR SHORT IN CAN BUS WIRES (MAIN BODY ECU) Click here

    A

  2. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Recheck for DTCs and check that no DTCs are output Click here.

      OK
      DTC U1002 is not output.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

  3. CHECK FOR OPEN IN CAN BUS WIRE (MAIN BODY ECU)


    1. B002C3JE02
      Text in Illustration
      *a

      Rear view of wire harness connector

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

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N13-9 (CANP) - N13-10 (CANN) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    NG

  4. CONNECT CONNECTOR


    1. Reconnect the N13 main body ECU (multiplex network body ECU) connector.


    NEXT

  5. CHECK FOR OPEN IN CAN BUS WIRE (NO. 2 CAN JUNCTION TERMINAL)


    1. B002C33E02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 CAN Junction Terminal)

      Disconnect the No. 2 CAN junction terminal connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N135-3 (CANP) - N135-2 (CANN) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

    OK

    REPLACE NO. 2 CAN JUNCTION TERMINAL

    NG

  6. CONNECT CONNECTOR


    1. Reconnect the N135 No. 2 CAN junction terminal connector.


    NEXT

  7. CHECK FOR OPEN IN CAN BUS WIRE (NO. 7 CAN JUNCTION CONNECTOR)


    1. B002BJYE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 7 CAN Junction Connector)
      *b to Main Body ECU (Multiplex Network Body ECU)
      *c to No. 10 CAN Junction Connector

      Disconnect the No. 7 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      U54-20 (CANH) - U54-9 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Main body ECU (multiplex network body ECU)
      U54-21 (CANH) - U54-10 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 10 CAN junction connector
      Result
      Result Proceed to
      OK A
      NG (to Main body ECU CAN main wire) B
      NG (to No. 10 CAN junction connector CAN main wire) C

    A

    REPLACE NO. 7 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 7 CAN JUNCTION CONNECTOR - MAIN BODY ECU)

    C

  8. CONNECT CONNECTOR


    1. Reconnect the U54 No. 7 CAN junction connector.


    NEXT

  9. CHECK FOR OPEN IN CAN BUS WIRE (NO. 10 CAN JUNCTION CONNECTOR)


    1. B002BM1E02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 10 CAN Junction Connector)
      *b to No. 5 CAN Junction Connector
      *c to No. 7 CAN Junction Connector

      Disconnect the No. 10 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      N183-1 (CANH) - N183-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 5 CAN junction connector
      N183-3 (CANH) - N183-14 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 7 CAN junction connector
      Result
      Result Proceed to
      OK A
      NG (to No. 7 CAN junction connector CAN main wire) B
      NG (to No. 5 CAN junction connector CAN main wire) C

    A

    REPLACE NO. 10 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 10 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR)

    C

  10. CONNECT CONNECTOR


    1. Reconnect the N183 No. 10 CAN junction connector.


    NEXT

  11. CHECK FOR OPEN IN CAN BUS WIRE (NO. 5 CAN JUNCTION CONNECTOR)


    1. B002BWJE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 5 CAN Junction Connector)
      *b to No. 10 CAN Junction Connector
      *c to No. 2 CAN Junction Terminal

      Disconnect the No. 5 CAN junction connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      N133-7 (CANH) - N133-18 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 10 CAN junction connector
      N133-10 (CANH) - N133-21 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 2 CAN junction terminal
      Result
      Result Proceed to
      OK A
      NG (to No. 2 CAN junction terminal CAN main wire) B
      NG (to No. 10 CAN junction connector CAN main wire) C

    A

    REPLACE NO. 5 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 5 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL)

    C

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 5 CAN JUNCTION CONNECTOR - NO. 10 CAN JUNCTION CONNECTOR)

  12. CHECK FOR SHORT IN CAN BUS WIRES (MAIN BODY ECU)


    1. B002C3JE03
      Text in Illustration
      *a

      Rear view of wire harness connector

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

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N13-9 (CANP) - N13-10 (CANN) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    NG

  13. CONNECT CONNECTOR


    1. Reconnect the N13 main body ECU (multiplex network body ECU) connector.


    NEXT

  14. CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION TERMINAL)


    1. B002C33E03
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 2 CAN Junction Terminal)

      Disconnect the No. 2 CAN junction terminal connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N135-3 (CANP) - N135-2 (CANN) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

    OK

    REPLACE NO. 2 CAN JUNCTION TERMINAL

    NG

  15. CONNECT CONNECTOR


    1. Reconnect the N135 No. 2 CAN junction terminal connector.


    NEXT

  16. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 CAN JUNCTION CONNECTOR)


    1. Disconnect the No. 7 CAN junction connector.

      B002B9PE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 7 CAN Junction Connector)

      		 *b to Main Body ECU (Multiplex Network Body ECU)
      *c to No. 10 CAN Junction Connector *d

      • to Luggage Closer Motor Assembly (w/ Power Trunk Lid System)

      • to Multiplex Network Door ECU (w/o Power Trunk Lid System)

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      U54-20 (CANH) - U54-9 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Main body ECU (multiplex network body ECU)
      U54-21 (CANH) - U54-10 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 10 CAN junction connector
      U54-22 (CANH) - U54-11 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

      • Luggage closer motor assembly*1

      • Multiplex network door ECU*2

      • *1: w/ Power Trunk Lid System

      • *2: w/o Power Trunk Lid System

      Result
      Result Proceed to
      OK A
      NG (to Main body ECU CAN main wire) B
      NG (to No. 10 CAN junction connector CAN main wire) C
      NG (ECU or sensor CAN branch wire) D

    A

    REPLACE NO. 7 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 7 CAN JUNCTION CONNECTOR - MAIN BODY ECU)

    D

    CHECK FOR SHORT IN CAN BUS WIRES (ECU, SENSOR) Click here

    C

  17. CONNECT CONNECTOR


    1. Reconnect the U54 No. 7 CAN junction connector.


    NEXT

  18. CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 CAN JUNCTION CONNECTOR)


    1. Disconnect the No. 10 CAN junction connector.

      B002BO8E02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 10 CAN Junction Connector)

      		 *b to No. 5 CAN Junction Connector
      *c to Position Control ECU Assembly LH (for Luxury Seat Type) *d to No. 7 CAN Junction Connector
      *e to Front Multiplex Network Door ECU LH - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      N183-1 (CANH) - N183-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 5 CAN junction connector
      N183-2 (CANH) - N183-13 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Position control ECU assembly LH*
      N183-3 (CANH) - N183-14 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 7 CAN junction connector
      N183-4 (CANH) - N183-15 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Front multiplex network door ECU LH

      • *: for Luxury Seat Type

      Result
      Result Proceed to
      OK A
      NG (to No. 7 CAN junction connector CAN main wire) B
      NG (to No. 5 CAN junction connector CAN main wire) C
      NG (ECU or sensor CAN branch wire) D

    A

    REPLACE NO. 10 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 10 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR)

    D

    CHECK FOR SHORT IN CAN BUS WIRES (ECU, SENSOR) Click here

    C

  19. CONNECT CONNECTOR


    1. Reconnect the N183 No. 10 CAN junction connector.


    NEXT

  20. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 CAN JUNCTION CONNECTOR)


    1. Disconnect the No. 5 CAN junction connector.

      B002BEFE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 5 CAN Junction Connector)

      		 *b to No. 10 CAN Junction Connector
      *c

      • to Position Control ECU Assembly RH (except Standard Seat Type)

      • to Power Seat Switch Assembly (for Standard Seat Type)

      		 *d to Multiplex Tilt and Telescopic ECU
      *e to No. 2 CAN Junction Terminal *f to Front Multiplex Network Door ECU RH

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      N133-7 (CANH) - N133-18 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 10 CAN junction connector
      N133-8 (CANH) - N133-19 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Multiplex tilt and telescopic ECU
      N133-9 (CANH) - N133-20 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

      • Position control ECU assembly RH*1

      • Power seat switch assembly*2
      N133-10 (CANH) - N133-21 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω No. 2 CAN junction terminal
      N133-11 (CANH) - N133-22 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Front multiplex network door ECU RH

      • *1: except Standard Seat Type

      • *2: for Standard Seat Type

      Result
      Result Proceed to
      OK A
      NG (to No. 2 CAN junction terminal CAN main wire) B
      NG (to No. 10 CAN junction connector CAN main wire) C
      NG (ECU or sensor CAN branch wire) D

    A

    REPLACE NO. 5 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 5 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL)

    C

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 5 CAN JUNCTION CONNECTOR - NO. 10 CAN JUNCTION CONNECTOR)

    D

  21. CHECK FOR SHORT IN CAN BUS WIRES (ECU, SENSOR)


    1. B002BZEE02
      Text in Illustration
      *a

      Component with harness connected

      (Main Body ECU [Multiplex Network Body ECU])

      Reconnect the CAN junction connector.

    2. Disconnect the connector that includes terminals CANH and CANL from the ECU or sensor to which the short circuited branch line is connected.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N13-9 (CANP) - N13-10 (CANN) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω

    OK

    REPLACE CORRESPONDING ECU OR SENSOR

    NG

    REPAIR OR REPLACE CORRESPONDING ECU OR SENSOR CAN WIRE OR CONNECTOR

  22. CHECK FOR SHORT IN CAN BUS WIRES (MAIN BODY ECU)


    1. B002BL7E02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (Main Body ECU [Multiplex Network Body ECU])
      *b Front view of DLC3

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N13-9 (CANP) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      N13-10 (CANN) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      N13-9 (CANP) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N13-10 (CANN) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    NG

  23. CONNECT CONNECTOR


    1. Reconnect the N13 main body ECU (multiplex network body ECU) connector.


    NEXT

  24. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 CAN JUNCTION CONNECTOR)


    1. Disconnect the No. 7 CAN junction connector.

      B002C08E02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 7 CAN Junction Connector)

      		 *b Front view of DLC3
      *c to Main Body ECU (Multiplex Network Body ECU) *d to No. 10 CAN Junction Connector
      *e

      • to Luggage Closer Motor Assembly (w/ Power Trunk Lid System)

      • to Multiplex Network Door ECU (w/o Power Trunk Lid System)

      		 - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      U54-20 (CANH) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Main body ECU (multiplex network body ECU)
      U54-9 (CANL) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      U54-20 (CANH) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      U54-9 (CANL) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      U54-21 (CANH) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher No. 10 CAN junction connector
      U54-10 (CANL) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      U54-21 (CANH) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      U54-10 (CANL) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      U54-22 (CANH) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher

      • Luggage closer motor assembly*1

      • Multiplex network door ECU*2
      U54-11 (CANL) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      U54-22 (CANH) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      U54-11 (CANL) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

      • *1: w/ Power Trunk Lid System

      • *2: w/o Power Trunk Lid System

      Result
      Result Proceed to
      OK A
      NG (to Main body ECU CAN main wire) B
      NG (to No. 10 CAN junction connector CAN main wire) C
      NG (ECU or sensor CAN branch wire) D

    A

    REPLACE NO. 7 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 7 CAN JUNCTION CONNECTOR - MAIN BODY ECU)

    D

    CHECK FOR SHORT IN CAN BUS WIRES (ECU, SENSOR) Click here

    C

  25. CONNECT CONNECTOR


    1. Reconnect the U54 No. 7 CAN junction connector.


    NEXT

  26. CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 CAN JUNCTION CONNECTOR)


    1. Disconnect the No. 10 CAN junction connector.

      B002C11E02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 10 CAN Junction Connector)

      		 *b Front view of DLC3
      *c to No. 5 CAN Junction Connector *d to Position Control ECU Assembly LH (for Luxury Seat Type)
      *e to No. 7 CAN Junction Connector *f to Front Multiplex Network Door ECU LH

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      N183-1 (CANH) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher No. 5 CAN junction connector
      N183-12 (CANL) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      N183-1 (CANH) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N183-12 (CANL) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N183-2 (CANH) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Position control ECU assembly LH*
      N183-13 (CANL) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      N183-2 (CANH) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N183-13 (CANL) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N183-3 (CANH) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher No. 7 CAN junction connector
      N183-14 (CANL) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      N183-3 (CANH) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N183-14 (CANL) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N183-4 (CANH) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Front multiplex network door ECU LH
      N183-15 (CANL) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      N183-4 (CANH) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N183-15 (CANL) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

      • *: for Luxury Seat Type

      Result
      Result Proceed to
      OK A
      NG (to No. 7 CAN junction connector CAN main wire) B
      NG (to No. 5 CAN junction connector CAN main wire) C
      NG (ECU or sensor CAN branch wire) D

    A

    REPLACE NO. 10 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 10 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR)

    D

    CHECK FOR SHORT IN CAN BUS WIRES (ECU, SENSOR) Click here

    C

  27. CONNECT CONNECTOR


    1. Reconnect the N183 No. 10 CAN junction connector.


    NEXT

  28. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 CAN JUNCTION CONNECTOR)


    1. Disconnect the No. 5 CAN junction connector.

      B002BRXE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 5 CAN Junction Connector)

      		 *b Front view of DLC3
      *c to No. 10 CAN Junction Connector *d Multiplex Tilt and Telescopic ECU
      *e

      • to Position Control ECU Assembly RH (except Standard Seat Type)

      • to Power Seat Switch Assembly (for Standard Seat Type)

      		 *f to No. 2 CAN Junction Terminal
      *g to Front Multiplex Network Door ECU RH - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      N133-7 (CANH) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher No. 10 CAN junction connector
      N133-18 (CANL) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      N133-7 (CANH) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N133-18 (CANL) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N133-8 (CANH) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Multiplex tilt and telescopic ECU
      N133-19 (CANL) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      N133-8 (CANH) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N133-19 (CANL) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N133-9 (CANH) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher

      • Position control ECU assembly RH*1

      • Power seat switch assembly*2
      N133-20 (CANL) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      N133-9 (CANH) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N133-20 (CANL) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N133-10 (CANH) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher No. 2 CAN junction terminal
      N133-21 (CANL) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      N133-10 (CANH) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N133-21 (CANL) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N133-11 (CANH) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Front multiplex network door ECU RH
      N133-22 (CANL) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      N133-11 (CANH) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N133-22 (CANL) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

      • *1: except Standard Seat Type

      • *2: for Standard Seat Type

      Result
      Result Proceed to
      OK A
      NG (to No. 10 CAN junction connector CAN main wire) B
      NG (ECU or sensor CAN wire) C

    A

    REPLACE NO. 5 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 5 CAN JUNCTION CONNECTOR - NO. 10 CAN JUNCTION CONNECTOR)

    C

  29. CHECK FOR SHORT IN CAN BUS WIRES (ECU, SENSOR)


    1. B002BSCE02
      Text in Illustration
      *a

      Component with harness connected

      (Main Body ECU [Multiplex Network Body ECU])
      *b Front view of DLC3

      Reconnect the CAN junction connector.

    2. Disconnect the connector that includes terminals CANH and CANL from the ECU or sensor to which the bus line shorted to +B, GND is connected.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N13-9 (CANP) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      N13-10 (CANN) - N20-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      N13-9 (CANP) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      N13-10 (CANN) - N20-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

    OK

    REPLACE CORRESPONDING ECU OR SENSOR

    NG

    REPAIR OR REPLACE CORRESPONDING ECU OR SENSOR CAN WIRE OR CONNECTOR