CAN COMMUNICATION SYSTEM(for LHD with Central Gateway ECU), 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 CAN main wire or connector

  • Open or short in sub bus 1 CAN branch wire or connector

  • Main body ECU (multiplex network body ECU)

  • Outer mirror control ECU assembly LH*1

  • Outer mirror control ECU assembly RH*1

  • Power seat switch assembly*1

  • Multiplex tilt and telescopic ECU*2

  • Power back door unit assembly (power back door ECU)*3

  • No. 2 main body ECU*4

  • No. 3 CAN junction terminal

  • No. 7 CAN junction connector

  • No. 8 CAN junction connector

  • No. 9 CAN junction connector

WIRING DIAGRAM

B001YZNE01
B001W8VE01

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 ignition 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 (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.

  • After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal 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 ignition switch to ON and wait at least 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 ignition 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. B001XU2E01
      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 (-) battery terminal.

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

      Standard Resistance
      Tester Connection Condition Specified Condition Resistance: Malfunction
      E117-9 (CANP) - E117-10 (CANN) Cable disconnected from negative (-) battery terminal 54 to 69 Ω Below 53 Ω: Short in line
      E117-9 (CANP) - E117-10 (CANN) Cable disconnected from negative (-) battery terminal 54 to 69 Ω Higher than 70 Ω: Open in CAN main bus line
      E117-9 (CANP) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ: +B short
      E117-10 (CANN) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ: +B short
      E117-9 (CANP) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω: Ground short
      E117-10 (CANN) - E22-4 (CG) Cable disconnected from negative (-) 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.

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

      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. B001XQIE01
      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
      E117-9 (CANP) - E117-10 (CANN) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    OK

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

    NG

  4. CONNECT CONNECTOR


    1. Reconnect the E117 main body ECU (multiplex network body ECU) connector.


    NEXT

  5. CHECK FOR OPEN IN CAN BUS WIRE (NO. 3 CAN JUNCTION TERMINAL)


    1. B001WMFE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 CAN Junction Terminal)

      Disconnect the No. 3 CAN junction terminal connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L69-3 (CANH) - L69-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    OK

    REPLACE NO. 3 CAN JUNCTION TERMINAL

    NG

  6. CONNECT CONNECTOR


    1. Reconnect the L69 No. 3 CAN junction terminal connector.


    NEXT

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


    1. Disconnect the No. 7 CAN junction connector.

      B001VLVE01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 7 CAN Junction Connector)

      		 *b to No. 8 CAN Junction Connector
      *c to Main Body ECU (Multiplex Network Body ECU) - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      E134-1 (CANH) - E134-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 8 CAN junction connector
      E134-2 (CANH) - E134-13 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Main body ECU (multiplex network body ECU)
      Result
      Result Proceed to
      OK A
      NG (to Main body ECU CAN main wire) B
      NG (to No. 8 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 E134 No. 7 CAN junction connector.


    NEXT

  9. CHECK FOR OPEN IN CAN BUS WIRE (NO. 8 CAN JUNCTION CONNECTOR)


    1. Disconnect the No. 8 CAN junction connector.

      B001ZMWE01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 8 CAN Junction Connector)

      		 *b to No. 7 CAN Junction Connector
      *c to No. 9 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
      E136-1 (CANH) - E136-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 7 CAN junction connector
      E136-2 (CANH) - E136-13 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 9 CAN junction connector
      Result
      Result Proceed to
      OK A
      NG (to No. 7 CAN junction connector CAN main wire) B
      NG (to No. 9 CAN junction connector CAN main wire) C

    A

    REPLACE NO. 8 CAN JUNCTION CONNECT

    B

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR)

    C

  10. CONNECT CONNECTOR


    1. Reconnect the E136 No. 8 CAN junction connector.


    NEXT

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


    1. Disconnect the No. 9 CAN junction connector.

      B001XRCE01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 9 CAN Junction Connector)

      		 *b to No. 8 CAN Junction Connector
      *c to No. 3 CAN Junction Terminal - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      L71-1 (CANH) - L71-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 8 CAN junction connector
      L71-2 (CANH) - L71-13 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 3 CAN junction terminal
      Result
      Result Proceed to
      OK A
      NG (to No. 3 CAN junction terminal CAN main wire) B
      NG (to No. 8 CAN junction connector CAN main wire) C

    A

    REPLACE NO. 9 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - NO. 3 CAN JUNCTION TERMINAL)

    C

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - NO. 8 CAN JUNCTION CONNECTOR)

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


    1. B001XQIE01
      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
      E117-9 (CANP) - E117-10 (CANN) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    OK

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

    NG

  13. CONNECT CONNECTOR


    1. Reconnect the E117 main body ECU (multiplex network body ECU) connector.


    NEXT

  14. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 CAN JUNCTION TERMINAL)


    1. B001WMFE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 CAN Junction Terminal)

      Disconnect the No. 3 CAN junction terminal connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L69-3 (CANH) - L69-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    OK

    REPLACE NO. 3 CAN JUNCTION TERMINAL

    NG

  15. CONNECT CONNECTOR


    1. Reconnect the L69 No. 3 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.

      B001XLTE01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 7 CAN Junction Connector)

      		 *b to No. 8 CAN Junction Connector
      *c to Main Body ECU (Multiplex Network Body ECU) *d to Outer Mirror Control ECU Assembly LH (w/ Memory)
      *e to Power Seat Switch Assembly (w/ Memory) *f to Multiplex Tilt and Telescopic ECU (w/ Power Tilt and Power Telescopic Steering Column System)

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      E134-1 (CANH) - E134-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 8 CAN junction connector
      E134-2 (CANH) - E134-13 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Main body ECU (multiplex network body ECU)
      E134-3 (CANH) - E134-14 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher Outer mirror control ECU assembly LH*1
      E134-4 (CANH) - E134-15 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher Power seat switch assembly*1
      E134-5 (CANH) - E134-16 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher Multiplex tilt and telescopic ECU*2

      • *1: w/ Memory

      • *2: w/ Power Tilt and Power Telescopic Steering Column System

      Result
      Result Proceed to
      OK A
      NG (to Main body ECU CAN main wire) B
      NG (to No. 8 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 E134 No. 7 CAN junction connector.


    NEXT

  18. CHECK FOR SHORT IN CAN BUS WIRES (NO. 8 CAN JUNCTION CONNECTOR)


    1. Disconnect the No. 8 CAN junction connector.

      B001VLJE01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 8 CAN Junction Connector)

      		 *b to No. 7 CAN Junction Connector
      *c to No. 9 CAN Junction Connector *d to Outer Mirror Control ECU Assembly RH (w/ Memory)

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      E136-1 (CANH) - E136-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 7 CAN junction connector
      E136-2 (CANH) - E136-13 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 9 CAN junction connector
      E136-3 (CANH) - E136-14 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher Outer mirror control ECU assembly RH*

      • *: w/ Memory

      Result
      Result Proceed to
      OK A
      NG (to No. 7 CAN junction connector CAN main wire) B
      NG (to No. 9 CAN junction connector CAN main wire) C
      NG (ECU or sensor CAN branch wire) D

    A

    REPLACE NO. 8 CAN JUNCTION CONNECT

    B

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 8 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 E136 No. 8 CAN junction connector.


    NEXT

  20. CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 CAN JUNCTION CONNECTOR)


    1. Disconnect the No. 9 CAN junction connector.

      B001YH0E01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 9 CAN Junction Connector)

      		 *b to No. 8 CAN Junction Connector
      *c to No. 3 CAN Junction Terminal *d to Power Back Door Unit Assembly (Power Back Door ECU) (w/ Power Back Door System)
      *e to No. 2 Main Body ECU (w/ Tail Gate Closer System) - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      L71-1 (CANH) - L71-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 8 CAN junction connector
      L71-2 (CANH) - L71-13 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 3 CAN junction terminal
      L71-3 (CANH) - L71-14 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher Power back door unit assembly (power back door ECU)*1
      L71-4 (CANH) - L71-15 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher No. 2 main body ECU*2

      • *1: w/ Power Back Door System

      • *2: w/ Tail Gate Closer System

      Result
      Result Proceed to
      OK A
      NG (to No. 3 CAN junction terminal CAN main wire) B
      NG (to No. 8 CAN junction connector CAN main wire) C
      NG (ECU or sensor CAN branch wire) D

    A

    REPLACE NO. 9 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - NO. 3 CAN JUNCTION TERMINAL)

    C

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - NO. 8 CAN JUNCTION CONNECTOR)

    D

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


    1. B001YWIE01
      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
      E117-9 (CANP) - E117-10 (CANN) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

    OK

    REPLACE CORRESPONDING ECU OR SENSOR

    NG

    REPAIR OR REPLACE CORRESPONDING ECU OR SENSOR CAN BRANCH WIRE OR CONNECTOR

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


    1. B00203FE01
      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
      E117-9 (CANP) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      E117-10 (CANN) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      E117-9 (CANP) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      E117-10 (CANN) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher

    OK

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

    NG

  23. CONNECT CONNECTOR


    1. Reconnect the E117 main body ECU (multiplex network body ECU) connector.


    NEXT

  24. CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 CAN JUNCTION TERMINAL)


    1. B001YD3E01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 3 CAN Junction Terminal)
      *b Front view of DLC3

      Disconnect the No. 3 CAN junction terminal connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L69-3 (CANH) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      L69-2 (CANL) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      L69-3 (CANH) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      L69-2 (CANL) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher

    OK

    REPLACE NO. 3 CAN JUNCTION TERMINAL

    NG

  25. CONNECT CONNECTOR


    1. Reconnect the L69 No. 3 CAN junction terminal connector.


    NEXT

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


    1. Disconnect the No. 7 CAN junction connector.

      B001VSEE01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 7 CAN Junction Connector)

      		 *b Front view of DLC3
      *c to No. 8 CAN Junction Connector *d to Main Body ECU (Multiplex Network Body ECU)
      *e to Outer Mirror Control ECU Assembly LH (w/ Memory) *f to Power Seat Switch Assembly (w/ Memory)
      *g to Multiplex Tilt and Telescopic ECU (w/ Power Tilt and Power Telescopic Steering Column System) - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      E134-1 (CANH) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher No. 8 CAN junction connector
      E134-12 (CANL) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      E134-1 (CANH) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      E134-12 (CANL) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      E134-2 (CANH) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Main body ECU (multiplex network body ECU)
      E134-13 (CANL) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      E134-2 (CANH) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      E134-13 (CANL) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      E134-3 (CANH) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Outer mirror control ECU assembly LH*1
      E134-14 (CANL) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      E134-3 (CANH) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      E134-14 (CANL) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      E134-4 (CANH) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Power seat switch assembly*1
      E134-15 (CANL) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      E134-4 (CANH) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      E134-15 (CANL) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      E134-5 (CANH) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Multiplex tilt and telescopic ECU*2
      E134-16 (CANL) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      E134-5 (CANH) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      E134-16 (CANL) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      • *1: w/ Memory

      • *2: w/ Power Tilt and Power Telescopic Steering Column System

      Result
      Result Proceed to
      OK A
      NG (to Main body ECU CAN main wire) B
      NG (to No. 8 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

  27. CONNECT CONNECTOR


    1. Reconnect the E134 No. 7 CAN junction connector.


    NEXT

  28. CHECK FOR SHORT IN CAN BUS WIRES (NO. 8 CAN JUNCTION CONNECTOR)


    1. Disconnect the No. 8 CAN junction connector.

      B001YGRE01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 8 CAN Junction Connector)

      		 *b Front view of DLC3
      *c to No. 7 CAN Junction Connector *d to No. 9 CAN Junction Connector
      *e to Outer Mirror Control ECU Assembly RH (w/ Memory) - -

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      E136-1 (CANH) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher No. 7 CAN junction connector
      E136-12 (CANL) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      E136-1 (CANH) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      E136-12 (CANL) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      E136-2 (CANH) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher No. 9 CAN junction connector
      E136-13 (CANL) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      E136-2 (CANH) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      E136-13 (CANL) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      E136-3 (CANH) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Outer mirror control ECU assembly RH*
      E136-14 (CANL) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      E136-3 (CANH) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      E136-14 (CANL) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      • *: w/ Memory

      Result
      Result Proceed to
      OK A
      NG (to No. 7 CAN junction connector CAN main wire) B
      NG (to No. 9 CAN junction connector CAN main wire) C
      NG (ECU or sensor CAN branch wire) D

    A

    REPLACE NO. 8 CAN JUNCTION CONNECT

    B

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR)

    D

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

    C

  29. CONNECT CONNECTOR


    1. Reconnect the E136 No. 8 CAN junction connector.


    NEXT

  30. CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 CAN JUNCTION CONNECTOR)


    1. Disconnect the No. 9 CAN junction connector.

      B002079E01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to No. 9 CAN Junction Connector)

      		 *b Front view of DLC3
      *c to No. 8 CAN Junction Connector *d to No. 3 CAN Junction Terminal
      *e to Power Back Door Unit Assembly (Power Back Door ECU) (w/ Power Back Door System) *f to No. 2 Main Body ECU (w/ Tail Gate Closer System)

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

      Standard Resistance
      Tester Connection Condition Specified Condition Connected to
      L71-1 (CANH) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher No. 8 CAN junction connector
      L71-12 (CANL) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      L71-1 (CANH) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      L71-12 (CANL) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      L71-2 (CANH) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher No. 3 CAN junction terminal
      L71-13 (CANL) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      L71-2 (CANH) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      L71-13 (CANL) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      L71-3 (CANH) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Power back door unit assembly (power back door ECU)*1
      L71-14 (CANL) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      L71-3 (CANH) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      L71-14 (CANL) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      L71-4 (CANH) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher No. 2 main body ECU*2
      L71-15 (CANL) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      L71-4 (CANH) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      L71-15 (CANL) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      • *1: w/ Power Back Door System

      • *2: w/ Tail Gate Closer System

      Result
      Result Proceed to
      OK A
      NG (to No. 3 CAN junction terminal CAN main wire) B
      NG (to No. 8 CAN junction connector CAN main wire) C
      NG (ECU or sensor CAN branch wire) D

    A

    REPLACE NO. 9 CAN JUNCTION CONNECTOR

    B

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - NO. 3 CAN JUNCTION TERMINAL)

    C

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - NO. 8 CAN JUNCTION CONNECTOR)

    D

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


    1. B001W5KE01
      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
      E117-9 (CANP) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      E117-10 (CANN) - E22-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      E117-9 (CANP) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      E117-10 (CANN) - E22-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher

    OK

    REPLACE CORRESPONDING ECU OR SENSOR

    NG

    REPAIR OR REPLACE CORRESPONDING ECU OR SENSOR CAN BRANCH WIRE OR CONNECTOR