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Home >> Toyota >> 2024 >> Corolla LE >> Repair and Diagnosis >> External Pages >> Different car >> Section 323 (Can Communication System (Except HEV) (Early 2023, TMC) - Circuit Tests (3 Of 4)) >> CAN COMMUNICATION SYSTEM (for Gasoline Model TMC Made) >> Check Bus 2 Line [09/2022 - 11/2022] >> Procedure

Check Bus 2 Line [09/2022 - 11/2022]: Procedure

WARNING: This page is about a different car, the 2023 Toyota GR Corolla and 2023 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      except G16E-GTS A
      for G16E-GTS B

    Result: 

    B 

    See step  28

    Result: 

    A 

    See step  2

  2. 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.
      GTY1119393Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      I173-26 (CA4H) - I173-25 (CA4L) Cable disconnected from negative (-) battery terminal Below 70 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  24

    Result: 

    OK 

    See step  3

  3. CHECK FOR SHORT IN CAN BUS LINES 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1119393Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      I173-26 (CA4H) - I173-25 (CA4L) Cable disconnected from negative (-) battery terminal 54 Ω or higher

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  18

    Result: 

    OK 

    See step  4

  4. CHECK FOR SHORT TO +B IN CAN BUS LINE 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1115405Courtesy 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
      I173-26 (CA4H) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      I173-25 (CA4L) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  12

    Result: 

    OK 

    See step  5

  5. CHECK FOR SHORT TO GND IN CAN BUS LINE 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1115401Courtesy 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
      I173-26 (CA4H) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      I173-25 (CA4L) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    See step  6

  6. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 11 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the A147 No. 11 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1110601Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-7 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A147-18 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  9

    Result: 

    OK 

    See step  7

  7. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 11 CAN JUNCTION CONNECTOR - ECM) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1110602Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to ECM

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-6 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A147-17 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  10

    Result: 

    OK 

    See step  8

  8. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 11 CAN JUNCTION CONNECTOR - TCM) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1110603Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to TCM

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-5 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A147-16 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 11 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  11

  9. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 11 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the I173 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1110601Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-7 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A147-18 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 11 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  10. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 11 CAN JUNCTION CONNECTOR - ECM) 
    1. Disconnect the A47 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1110602Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to ECM

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-6 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A147-17 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE ECM 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 11 CAN JUNCTION CONNECTOR - ECM) 

  11. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 11 CAN JUNCTION CONNECTOR - TCM) 
    1. Disconnect the C80 TCM connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1110603Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to TCM

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-5 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A147-16 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE TCM 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 11 CAN JUNCTION CONNECTOR - TCM) 

  12. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 11 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the A147 No. 11 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1110604Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-7 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      A147-18 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  15

    Result: 

    OK 

    See step  13

  13. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 11 CAN JUNCTION CONNECTOR - ECM) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1110597Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to ECM

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-6 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      A147-17 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  16

    Result: 

    OK 

    See step  14

  14. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 11 CAN JUNCTION CONNECTOR - TCM) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1110605Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to TCM

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-5 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      A147-16 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 11 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  17

  15. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 11 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the I173 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1110604Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-7 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      A147-18 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 11 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  16. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 11 CAN JUNCTION CONNECTOR - ECM) 
    1. Disconnect the A47 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1110597Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to ECM

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-6 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      A147-17 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE ECM 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 11 CAN JUNCTION CONNECTOR - ECM) 

  17. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 11 CAN JUNCTION CONNECTOR - TCM) 
    1. Disconnect the C80 TCM connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1110605Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to TCM

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-5 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      A147-16 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE TCM 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 11 CAN JUNCTION CONNECTOR - TCM) 

  18. CHECK FOR SHORT IN CAN BUS LINES (NO. 11 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the A147 No. 11 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1118623Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-7 (CANH) - A147-18 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  21

    Result: 

    OK 

    See step  19

  19. CHECK FOR SHORT IN CAN BUS LINES (NO. 11 CAN JUNCTION CONNECTOR - ECM) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1113872Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to ECM

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-6 (CANH) - A147-17 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  22

    Result: 

    OK 

    See step  20

  20. CHECK FOR SHORT IN CAN BUS LINES (NO. 11 CAN JUNCTION CONNECTOR - TCM) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1113870Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to TCM

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-5 (CANH) - A147-16 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 11 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  23

  21. CHECK FOR SHORT IN CAN BUS LINES (NO. 11 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the I173 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1118623Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-7 (CANH) - A147-18 (CANL) Cable disconnected from negative (-) battery terminal 1 MΩ or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 11 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  22. CHECK FOR SHORT IN CAN BUS LINES (NO. 11 CAN JUNCTION CONNECTOR - ECM) 
    1. Disconnect the A47 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1113872Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to ECM

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-6 (CANH) - A147-17 (CANL) Cable disconnected from negative (-) battery terminal 1 MΩ or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE ECM 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 11 CAN JUNCTION CONNECTOR - ECM) 

  23. CHECK FOR SHORT IN CAN BUS LINES (NO. 11 CAN JUNCTION CONNECTOR - TCM) 
    1. Disconnect the C80 TCM connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1113870Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to TCM

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-5 (CANH) - A147-16 (CANL) Cable disconnected from negative (-) battery terminal 1 MΩ or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE TCM 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 11 CAN JUNCTION CONNECTOR - TCM) 

  24. CHECK FOR OPEN IN CAN MAIN BUS LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the I173 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I173-26 (CA4H) - I173-25 (CA4L) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      GTY1115364Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Central Gateway ECU (Network Gateway ECU))

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    See step  25

  25. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 11 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Reconnect the I173 central gateway ECU (network gateway ECU) connector.
    2. Disconnect the A147 No. 11 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY1118623Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-7 (CANH) - A147-18 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 11 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

    Result: 

    OK 

    See step  26

  26. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 11 CAN JUNCTION CONNECTOR - ECM) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1113872Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 11 CAN Junction Connector)      		 *b to ECM

      Standard Resistance

      Tester Connection Condition Specified Condition
      A147-6 (CANH) - A147-17 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 11 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  27

  27. CHECK FOR OPEN IN CAN MAIN BUS LINES (ECM) 
    1. Reconnect the A147 No. 11 CAN junction connector.
    2. Disconnect the A47 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A47-8 (CANH) - A47-18 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      GTY1110999Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to ECM)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE ECM 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (ECM - NO. 11 CAN JUNCTION CONNECTOR) 

  28. 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.
      GTY1119393Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      I173-26 (CA4H) - I173-25 (CA4L) Cable disconnected from negative (-) battery terminal Below 70 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  38

    Result: 

    OK 

    See step  29

  29. CHECK FOR SHORT IN CAN BUS LINES 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1119393Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      I173-26 (CA4H) - I173-25 (CA4L) Cable disconnected from negative (-) battery terminal 54 Ω or higher

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  36

    Result: 

    OK 

    See step  30

  30. CHECK FOR SHORT TO +B IN CAN BUS LINE 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1115405Courtesy 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
      I173-26 (CA4H) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      I173-25 (CA4L) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  34

    Result: 

    OK 

    See step  31

  31. CHECK FOR SHORT TO GND IN CAN BUS LINE 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1115401Courtesy 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
      I173-26 (CA4H) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      I173-25 (CA4L) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    See step  32

  32. CHECK FOR SHORT TO GND IN CAN BUS LINE (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the I173 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1111804Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to Central Gateway ECU (Network Gateway ECU))      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      I173-26 (CA4H) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      I173-25 (CA4L) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    See step  33

  33. CHECK FOR SHORT TO GND IN CAN BUS LINE (ECM) 
    1. Disconnect the A139 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1112198Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to ECM)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      A139-8 (CANH) - A139-10 (E1) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A139-18 (CANL) - A139-10 (E1)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE ECM 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (ECM - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  34. CHECK FOR SHORT TO +B IN CAN BUS LINE (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the I173 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1111805Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to Central Gateway ECU (Network Gateway ECU))      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      I173-26 (CA4H) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      I173-25 (CA4L) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    See step  35

  35. CHECK FOR SHORT TO +B IN CAN BUS LINE (ECM) 
    1. Disconnect the A139 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1118276Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to ECM)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      A139-8 (CANH) - A139-1 (BATT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      A139-18 (CANL) - A139-1 (BATT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE ECM 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (ECM - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  36. CHECK FOR SHORT IN CAN BUS LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the I173 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1118937Courtesy 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
      I173-26 (CA4H) - I173-25 (CA4L) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    See step  37

  37. CHECK FOR SHORT IN CAN BUS LINES (ECM) 
    1. Reconnect the I173 central gateway ECU (network gateway ECU) connector.
    2. Disconnect the A139 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY1112199Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to ECM)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      A139-8 (CANH) - A139-18 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE ECM 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (ECM - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  38. CHECK FOR OPEN IN CAN MAIN BUS LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the I173 central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1118937Courtesy 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
      I173-26 (CA4H) - I173-25 (CA4L) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    See step  39

  39. CHECK FOR OPEN IN CAN MAIN BUS LINES (ECM) 
    1. Reconnect the I173 central gateway ECU (network gateway ECU) connector.
    2. Disconnect the A139 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY1112199Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to ECM)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      A139-8 (CANH) - A139-18 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE ECM 

    Refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (ECM - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

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