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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 66 (Can Communication System (HV) - Circuit Tests (6 Of 9)) >> CAN COMMUNICATION SYSTEM (for HV Model) >> Check Bus 3 Line [10/2022 - 11/2023] >> Procedure

Check Bus 3 Line [10/2022 - 11/2023]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR OPEN IN CAN MAIN BUS LINES 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Measure the resistance according to the value(s) in the table below.
      GTY848026Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      H59-6 (CA3H) - H59-21 (CA3L) Cable disconnected from negative (-) auxiliary battery terminal Below 70 Ω

      Result

      Result
      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.
      GTY848026Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      H59-6 (CA3H) - H59-21 (CA3L) Cable disconnected from negative (-) auxiliary battery terminal 54 Ω or higher

      Result

      Result
      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.
      GTY850187Courtesy 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
      H59-6 (CA3H) - H56-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      H59-21 (CA3L) - H56-16 (BAT)

      Result

      Result
      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.
      GTY928833Courtesy 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
      H59-6 (CA3H) - H56-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      H59-21 (CA3L) - H56-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [12/2019 - 11/2023]

    Result: 

    NG 

    See step  5

  5. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H99 No. 7 global CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY905944Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-2 (CANH) - H56-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      H99-13 (CANL) - H56-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  10

    Result: 

    OK 

    See step  6

  6. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY905941Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-3 (CANH) - H56-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      H99-14 (CANL) - H56-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  11

    Result: 

    OK 

    See step  7

  7. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      w/ Telematics Transceiver A
      w/o Telematics Transceiver B

    Result: 

    B 

    See step  9

    Result: 

    A 

    See step  8

  8. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - DCM (TELEMATICS TRANSCEIVER)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY905942Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to DCM (Telematics Transceiver)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-5 (CANH) - H56-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      H99-16 (CANL) - H56-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  12

    Result: 

    OK 

    See step  9

  9. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - RADIO AND DISPLAY RECEIVER ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY941116Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Radio and Display Receiver Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-4 (CANH) - H56-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      H99-15 (CANL) - H56-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 7 GLOBAL CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  13

  10. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H59 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY905944Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-2 (CANH) - H56-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      H99-13 (CANL) - H56-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [12/2019 - 11/2023]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  11. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H59 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY905941Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-3 (CANH) - H56-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      H99-14 (CANL) - H56-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [12/2019 - 11/2023]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  12. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - DCM (TELEMATICS TRANSCEIVER)) 
    1. Disconnect the H11 DCM (telematics transceiver) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY905942Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to DCM (Telematics Transceiver)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-5 (CANH) - H56-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      H99-16 (CANL) - H56-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE DCM (TELEMATICS TRANSCEIVER) 

    Refer to REMOVAL [10/2022 - 11/2023]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - DCM (TELEMATICS TRANSCEIVER)) 

  13. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - RADIO AND DISPLAY RECEIVER ASSEMBLY) 
    1. Disconnect the H108 radio and display receiver assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY941116Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Radio and Display Receiver Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-4 (CANH) - H56-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      H99-15 (CANL) - H56-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

    Refer to REMOVAL [10/2022 - 11/2023]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - RADIO AND DISPLAY RECEIVER ASSEMBLY) 

  14. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H99 No. 7 global CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY905934Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-2 (CANH) - H56-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      H99-13 (CANL) - H56-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  19

    Result: 

    OK 

    See step  15

  15. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY905936Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-3 (CANH) - H56-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      H99-14 (CANL) - H56-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  20

    Result: 

    OK 

    See step  16

  16. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      w/ Telematics Transceiver A
      w/o Telematics Transceiver B

    Result: 

    B 

    See step  18

    Result: 

    A 

    See step  17

  17. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - DCM (TELEMATICS TRANSCEIVER)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY941115Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to DCM (Telematics Transceiver)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-5 (CANH) - H56-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      H99-16 (CANL) - H56-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  21

    Result: 

    OK 

    See step  18

  18. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - RADIO AND DISPLAY RECEIVER ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY905933Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Radio and Display Receiver Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-4 (CANH) - H56-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      H99-15 (CANL) - H56-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 7 GLOBAL CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  22

  19. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H59 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY905934Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-2 (CANH) - H56-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      H99-13 (CANL) - H56-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [12/2019 - 11/2023]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  20. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H59 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY905936Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-3 (CANH) - H56-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      H99-14 (CANL) - H56-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [12/2019 - 11/2023]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  21. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - DCM (TELEMATICS TRANSCEIVER)) 
    1. Disconnect the H11 DCM (telematics transceiver) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY941115Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to DCM (Telematics Transceiver)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-5 (CANH) - H56-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      H99-16 (CANL) - H56-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE DCM (TELEMATICS TRANSCEIVER) 

    Refer to REMOVAL [10/2022 - 11/2023]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - DCM (TELEMATICS TRANSCEIVER)) 

  22. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - RADIO AND DISPLAY RECEIVER ASSEMBLY) 
    1. Disconnect the H108 radio and display receiver assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY905933Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Radio and Display Receiver Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-4 (CANH) - H56-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      H99-15 (CANL) - H56-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

    Refer to REMOVAL [10/2022 - 11/2023]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - RADIO AND DISPLAY RECEIVER ASSEMBLY) 

  23. CHECK FOR SHORT IN CAN BUS LINES (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H99 No. 7 global CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY922607Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-2 (CANH) - H99-13 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  28

    Result: 

    OK 

    See step  24

  24. CHECK FOR SHORT IN CAN BUS LINES (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY944803Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-3 (CANH) - H99-14 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  29

    Result: 

    OK 

    See step  25

  25. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      w/ Telematics Transceiver A
      w/o Telematics Transceiver B

    Result: 

    B 

    See step  27

    Result: 

    A 

    See step  26

  26. CHECK FOR SHORT IN CAN BUS LINES (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - DCM (TELEMATICS TRANSCEIVER)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY922606Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to DCM (Telematics Transceiver)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-5 (CANH) - H99-16 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  30

    Result: 

    OK 

    See step  27

  27. CHECK FOR SHORT IN CAN BUS LINES (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - RADIO AND DISPLAY RECEIVER ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY922605Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Radio and Display Receiver Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-4 (CANH) - H99-15 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 7 GLOBAL CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  31

  28. CHECK FOR SHORT IN CAN BUS LINES (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H59 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY922607Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-2 (CANH) - H99-13 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 1 MΩ or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [12/2019 - 11/2023]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  29. CHECK FOR SHORT IN CAN BUS LINES (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H59 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY944803Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-3 (CANH) - H99-14 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 1 MΩ or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [12/2019 - 11/2023]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  30. CHECK FOR SHORT IN CAN BUS LINES (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - DCM (TELEMATICS TRANSCEIVER)) 
    1. Disconnect the H11 DCM (telematics transceiver) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY922606Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to DCM (Telematics Transceiver)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-5 (CANH) - H99-16 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 1 MΩ or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE DCM (TELEMATICS TRANSCEIVER) 

    Refer to REMOVAL [10/2022 - 11/2023]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - DCM (TELEMATICS TRANSCEIVER)) 

  31. CHECK FOR SHORT IN CAN BUS LINES (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - RADIO AND DISPLAY RECEIVER ASSEMBLY) 
    1. Disconnect the H108 radio and display receiver assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY922605Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Radio and Display Receiver Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-4 (CANH) - H99-15 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 1 MΩ or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

    Refer to REMOVAL [10/2022 - 11/2023]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - RADIO AND DISPLAY RECEIVER ASSEMBLY) 

  32. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H99 No. 7 global CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY922607Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-2 (CANH) - H99-13 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  35

    Result: 

    OK 

    See step  33

  33. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY944803Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-3 (CANH) - H99-14 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 7 GLOBAL CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  34

  34. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H59 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY930480Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b Front view of wire harness connector
      (to Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-3 (CANH) - H59-19 (CAYH) Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      H99-14 (CANL) - H59-20 (CAYL)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [12/2019 - 11/2023]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  35. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the H59 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY857700Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 Global CAN Junction Connector)      		 *b Front view of wire harness connector
      (to Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      H99-2 (CANH) - H59-6 (CA3H) Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      H99-13 (CANL) - H59-21 (CA3L)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [12/2019 - 11/2023]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 7 GLOBAL CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

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