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Check Bus 6 Line [11/2023 - ]: Procedure

  1. CHECK FOR OPEN IN CAN MAIN BUS LINES 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1180353Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      H143-31 (CA7H) - H143-32 (CA7L) Cable disconnected from negative (-) battery terminal Below 70 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  32

    Result: 

    OK 

    See step  2

  2. CHECK FOR SHORT IN CAN BUS LINES 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1180353Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      H143-31 (CA7H) - H143-32 (CA7L) Cable disconnected from negative (-) battery terminal 54 Ω or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  23

    Result: 

    OK 

    See step  3

  3. CHECK FOR SHORT TO +B IN CAN BUS LINE 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1178745Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      H143-31 (CA7H) - H56-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      H143-32 (CA7L) - H56-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  14

    Result: 

    OK 

    See step  4

  4. CHECK FOR SHORT TO GND IN CAN BUS LINE 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1178746Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      H143-31 (CA7H) - H56-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      H143-32 (CA7L) - H56-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [11/2023 - ]

    Result: 

    NG 

    See step  5

  5. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the M108 No. 13 global CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1180167Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-1 (CANH) - H56-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      M108-12 (CANL) - H56-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  10

    Result: 

    OK 

    See step  6

  6. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1180168Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-2 (CANH) - H56-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      M108-13 (CANL) - H56-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  11

    Result: 

    OK 

    See step  7

  7. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      for AWD A
      for 2WD B

    Result: 

    B 

    See step  9

    Result: 

    A 

    See step  8

  8. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1180169Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to 4WD ECU Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-4 (CANH) - H56-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      M108-15 (CANL) - H56-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  12

    Result: 

    OK 

    See step  9

  9. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1180170Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Tire Pressure Warning ECU and Receiver

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-3 (CANH) - H56-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      M108-14 (CANL) - H56-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 13 GLOBAL CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  13

  10. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H143 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1180167Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-1 (CANH) - H56-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      M108-12 (CANL) - H56-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [11/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  11. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H143 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1180168Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-2 (CANH) - H56-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      M108-13 (CANL) - H56-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [11/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  12. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY) 
    1. Disconnect the M42 4WD ECU assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1180169Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to 4WD ECU Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-4 (CANH) - H56-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      M108-15 (CANL) - H56-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE 4WD ECU ASSEMBLY 

    Refer to REMOVAL [12/2019 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY) 

  13. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER) 
    1. Disconnect the M51 tire pressure warning ECU and receiver connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1180170Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Tire Pressure Warning ECU and Receiver

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-3 (CANH) - H56-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      M108-14 (CANL) - H56-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER 

    Refer to REMOVAL [11/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER) 

  14. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the M108 No. 13 global CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1179153Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-1 (CANH) - H56-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      M108-12 (CANL) - H56-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  19

    Result: 

    OK 

    See step  15

  15. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1180172Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-2 (CANH) - H56-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      M108-13 (CANL) - H56-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  20

    Result: 

    OK 

    See step  16

  16. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      for AWD A
      for 2WD B

    Result: 

    B 

    See step  18

    Result: 

    A 

    See step  17

  17. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1180173Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to 4WD ECU Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-4 (CANH) - H56-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      M108-15 (CANL) - H56-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  21

    Result: 

    OK 

    See step  18

  18. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1180174Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Tire Pressure Warning ECU and Receiver

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-3 (CANH) - H56-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      M108-14 (CANL) - H56-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 13 GLOBAL CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  22

  19. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H143 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1179153Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-1 (CANH) - H56-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      M108-12 (CANL) - H56-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [11/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  20. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H143 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1180172Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-2 (CANH) - H56-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      M108-13 (CANL) - H56-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [11/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  21. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY) 
    1. Disconnect the M42 4WD ECU assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1180173Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to 4WD ECU Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-4 (CANH) - H56-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      M108-15 (CANL) - H56-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE 4WD ECU ASSEMBLY 

    Refer to REMOVAL [12/2019 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY) 

  22. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER) 
    1. Disconnect the M51 tire pressure warning ECU and receiver connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1180174Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Tire Pressure Warning ECU and Receiver

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-3 (CANH) - H56-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      M108-14 (CANL) - H56-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER 

    Refer to REMOVAL [11/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER) 

  23. CHECK FOR SHORT IN CAN BUS LINES (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the M108 No. 13 global CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1179556Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-1 (CANH) - M108-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  28

    Result: 

    OK 

    See step  24

  24. CHECK FOR SHORT IN CAN BUS LINES (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1179557Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-2 (CANH) - M108-13 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  29

    Result: 

    OK 

    See step  25

  25. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      for AWD A
      for 2WD B

    Result: 

    B 

    See step  27

    Result: 

    A 

    See step  26

  26. CHECK FOR SHORT IN CAN BUS LINES (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1179423Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to 4WD ECU Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-4 (CANH) - M108-15 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  30

    Result: 

    OK 

    See step  27

  27. CHECK FOR SHORT IN CAN BUS LINES (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1179427Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Tire Pressure Warning ECU and Receiver

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-3 (CANH) - M108-14 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 13 GLOBAL CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  31

  28. CHECK FOR SHORT IN CAN BUS LINES (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H143 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1179556Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-1 (CANH) - M108-12 (CANL) Cable disconnected from negative (-) battery terminal 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [11/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  29. CHECK FOR SHORT IN CAN BUS LINES (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H143 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1179557Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-2 (CANH) - M108-13 (CANL) Cable disconnected from negative (-) battery terminal 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [11/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  30. CHECK FOR SHORT IN CAN BUS LINES (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY) 
    1. Disconnect the M42 4WD ECU assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1179423Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to 4WD ECU Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-4 (CANH) - M108-15 (CANL) Cable disconnected from negative (-) battery terminal 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE 4WD ECU ASSEMBLY 

    Refer to REMOVAL [12/2019 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY) 

  31. CHECK FOR SHORT IN CAN BUS LINES (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER) 
    1. Disconnect the M51 tire pressure warning ECU and receiver connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1179427Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Tire Pressure Warning ECU and Receiver

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-3 (CANH) - M108-14 (CANL) Cable disconnected from negative (-) battery terminal 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER 

    Refer to REMOVAL [11/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER) 

  32. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 13 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the M108 No. 13 global CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1179556Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-1 (CANH) - M108-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  34

    Result: 

    OK 

    See step  33

  33. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1179557Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      M108-2 (CANH) - M108-13 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 13 GLOBAL CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  34

  34. CHECK FOR OPEN IN CAN MAIN BUS LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Reconnect the M108 No. 13 global CAN junction connector.
    2. Disconnect the H143 central gateway ECU (network gateway ECU) connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY1179916Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      H143-31 (CA7H) - H143-14 (CAXH) Cable disconnected from negative (-) battery terminal Below 1 Ω
      H143-32 (CA7L) - H143-15 (CAXL) Cable disconnected from negative (-) battery terminal Below 1 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [11/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 13 GLOBAL CAN JUNCTION CONNECTOR) 

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