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Check Bus 4 Line [12/2022 - ]: 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.
      GTY1141698Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      K78-24 (CA2H) - K78-23 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal Below 70 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  47

    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.
      GTY1141698Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      K78-24 (CA2H) - K78-23 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 54 Ω or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  33

    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.
      GTY1158959Courtesy 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
      K78-24 (CA2H) - K8-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      K78-23 (CA2L) - K8-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  19

    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.
      GTY1158961Courtesy 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
      K78-24 (CA2H) - K8-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      K78-23 (CA2L) - K8-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [12/2022 - ]

    Result: 

    NG 

    See step  5

  5. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the A3 No. 1 skid control ECU (brake booster with master cylinder assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A3-36 (CA1H) - K8-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      A3-37 (CA1L) - K8-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  7

    Result: 

    OK 

    See step  6

  6. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) - NO. 3 GLOBAL CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A3-34 (DC1H) - K8-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      A3-35 (DC1L) - K8-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

    See step  8

  7. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the K78 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
      A3-36 (CA1H) - K8-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      A3-37 (CA1L) - K8-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [12/2022 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  8. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 
    1. Disconnect the A17 No. 3 global CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A17-2 (CANH) - K8-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      A17-13 (CANL) - K8-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 

    Result: 

    OK 

    See step  9

  9. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 4 GLOBAL CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A17-3 (CANH) - K8-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      A17-14 (CANL) - K8-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  12

    Result: 

    OK 

    See step  10

  10. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A17-1 (CANH) - K8-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      A17-12 (CANL) - K8-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 3 GLOBAL CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  11

  11. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 
    1. Disconnect the A4 No. 2 skid control ECU (brake actuator assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A17-1 (CANH) - K8-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      A17-12 (CANL) - K8-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 

  12. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - NO. 3 GLOBAL CAN JUNCTION CONNECTOR) 
    1. Disconnect the K105 No. 4 global CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-2 (CANH) - K8-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      K105-6 (CANL) - K8-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - NO. 3 GLOBAL CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  13

  13. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-4 (CANH) - K8-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      K105-8 (CANL) - K8-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  16

    Result: 

    OK 

    See step  14

  14. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - AIRBAG ECU ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-1 (CANH) - K8-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      K105-5 (CANL) - K8-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  17

    Result: 

    OK 

    See step  15

  15. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - STEERING SENSOR) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-3 (CANH) - K8-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      K105-7 (CANL) - K8-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 4 GLOBAL CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  18

  16. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY) 
    1. Disconnect the K44 power steering ECU assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-4 (CANH) - K8-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      K105-8 (CANL) - K8-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE POWER STEERING ECU ASSEMBLY 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY) 

  17. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - AIRBAG ECU ASSEMBLY) 
    1. Disconnect the K1 airbag ECU assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-1 (CANH) - K8-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      K105-5 (CANL) - K8-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE AIRBAG ECU ASSEMBLY 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

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

  18. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - STEERING SENSOR) 
    1. Disconnect the K72 steering sensor connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-3 (CANH) - K8-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      K105-7 (CANL) - K8-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE STEERING SENSOR 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - STEERING SENSOR) 

  19. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the A3 No. 1 skid control ECU (brake booster with master cylinder assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A3-36 (CA1H) - K8-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      A3-37 (CA1L) - K8-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  21

    Result: 

    OK 

    See step  20

  20. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) - NO. 3 GLOBAL CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A3-34 (DC1H) - K8-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      A3-35 (DC1L) - K8-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

    See step  22

  21. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the K78 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
      A3-36 (CA1H) - K8-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      A3-37 (CA1L) - K8-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [12/2022 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  22. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 
    1. Disconnect the A17 No. 3 global CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A17-2 (CANH) - K8-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      A17-13 (CANL) - K8-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 

    Result: 

    OK 

    See step  23

  23. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 4 GLOBAL CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A17-3 (CANH) - K8-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      A17-14 (CANL) - K8-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  26

    Result: 

    OK 

    See step  24

  24. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A17-1 (CANH) - K8-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      A17-12 (CANL) - K8-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 3 GLOBAL CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  25

  25. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 
    1. Disconnect the A4 No. 2 skid control ECU (brake actuator assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A17-1 (CANH) - K8-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      A17-12 (CANL) - K8-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 

  26. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - NO. 3 GLOBAL CAN JUNCTION CONNECTOR) 
    1. Disconnect the K105 No. 4 global CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-2 (CANH) - K8-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      K105-6 (CANL) - K8-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - NO. 3 GLOBAL CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  27

  27. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-4 (CANH) - K8-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      K105-8 (CANL) - K8-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  30

    Result: 

    OK 

    See step  28

  28. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - AIRBAG ECU ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-1 (CANH) - K8-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      K105-5 (CANL) - K8-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  31

    Result: 

    OK 

    See step  29

  29. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - STEERING SENSOR) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-3 (CANH) - K8-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      K105-7 (CANL) - K8-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 4 GLOBAL CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  32

  30. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY) 
    1. Disconnect the K44 power steering ECU assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-4 (CANH) - K8-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      K105-8 (CANL) - K8-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE POWER STEERING ECU ASSEMBLY 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY) 

  31. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - AIRBAG ECU ASSEMBLY) 
    1. Disconnect the K1 airbag ECU assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-1 (CANH) - K8-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      K105-5 (CANL) - K8-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE AIRBAG ECU ASSEMBLY 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

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

  32. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - STEERING SENSOR) 
    1. Disconnect the K72 steering sensor connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-3 (CANH) - K8-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      K105-7 (CANL) - K8-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE STEERING SENSOR 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - STEERING SENSOR) 

  33. CHECK FOR SHORT IN CAN BUS LINES (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the A3 No. 1 skid control ECU (brake booster with master cylinder assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A3-36 (CA1H) - A3-37 (CA1L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  35

    Result: 

    OK 

    See step  34

  34. CHECK FOR SHORT IN CAN BUS LINES (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) - NO. 3 GLOBAL CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A3-34 (DC1H) - A3-35 (DC1L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

    See step  36

  35. CHECK FOR SHORT IN CAN BUS LINES (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the K78 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
      A3-36 (CA1H) - A3-37 (CA1L) Cable disconnected from negative (-) auxiliary battery terminal 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [12/2022 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  36. CHECK FOR SHORT IN CAN BUS LINES (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 
    1. Reconnect the A3 No. 1 skid control ECU (brake booster with master cylinder assembly) connector.
    2. Disconnect the A17 No. 3 global CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A17-2 (CANH) - A17-13 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 

    Result: 

    OK 

    See step  37

  37. CHECK FOR SHORT IN CAN BUS LINES (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 4 GLOBAL CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A17-3 (CANH) - A17-14 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  40

    Result: 

    OK 

    See step  38

  38. CHECK FOR SHORT IN CAN BUS LINES (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A17-1 (CANH) - A17-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 3 GLOBAL CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  39

  39. CHECK FOR SHORT IN CAN BUS LINES (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 
    1. Disconnect the A4 No. 2 skid control ECU (brake actuator assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A17-1 (CANH) - A17-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) 

  40. CHECK FOR SHORT IN CAN BUS LINES (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - NO. 3 GLOBAL CAN JUNCTION CONNECTOR) 
    1. Reconnect the A17 No. 3 global CAN junction connector.
    2. Disconnect the K105 No. 4 global CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-2 (CANH) - K105-6 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - NO. 3 GLOBAL CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  41

  41. CHECK FOR SHORT IN CAN BUS LINES (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-4 (CANH) - K105-8 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  44

    Result: 

    OK 

    See step  42

  42. CHECK FOR SHORT IN CAN BUS LINES (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - AIRBAG ECU ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-1 (CANH) - K105-5 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  45

    Result: 

    OK 

    See step  43

  43. CHECK FOR SHORT IN CAN BUS LINES (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - STEERING SENSOR) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-3 (CANH) - K105-7 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 4 GLOBAL CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  46

  44. CHECK FOR SHORT IN CAN BUS LINES (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY) 
    1. Disconnect the K44 power steering ECU assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-4 (CANH) - K105-8 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE POWER STEERING ECU ASSEMBLY 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY) 

  45. CHECK FOR SHORT IN CAN BUS LINES (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - AIRBAG ECU ASSEMBLY) 
    1. Disconnect the K1 airbag ECU assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-1 (CANH) - K105-5 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE AIRBAG ECU ASSEMBLY 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

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

  46. CHECK FOR SHORT IN CAN BUS LINES (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - STEERING SENSOR) 
    1. Disconnect the K72 steering sensor connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-3 (CANH) - K105-7 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE STEERING SENSOR 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - STEERING SENSOR) 

  47. CHECK FOR OPEN IN CAN MAIN BUS LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the K78 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
      K78-24 (CA2H) - K78-23 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [12/2022 - ]

    Result: 

    NG 

    See step  48

  48. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Reconnect the K78 central gateway ECU (network gateway ECU) connector.
    2. Disconnect the A3 No. 1 skid control ECU (brake booster with master cylinder assembly) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A3-36 (CA1H) - A3-37 (CA1L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

    Result: 

    OK 

    See step  49

  49. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) - NO. 3 GLOBAL CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A3-34 (DC1H) - A3-35 (DC1L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

    See step  50

  50. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 
    1. Reconnect the A3 No. 1 skid control ECU (brake booster with master cylinder assembly) connector.
    2. Disconnect the A17 No. 3 global CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A17-2 (CANH) - A17-13 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 1 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) 

    Result: 

    OK 

    See step  51

  51. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 3 GLOBAL CAN JUNCTION CONNECTOR - NO. 4 GLOBAL CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A17-3 (CANH) - A17-14 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 3 GLOBAL CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  52

  52. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - NO. 3 GLOBAL CAN JUNCTION CONNECTOR) 
    1. Reconnect the A17 No. 3 global CAN junction connector.
    2. Disconnect the K105 No. 4 global CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-2 (CANH) - K105-6 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - NO. 3 GLOBAL CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  53

  53. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 4 GLOBAL CAN JUNCTION CONNECTOR - POWER STEERING ECU ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K105-4 (CANH) - K105-8 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 4 GLOBAL CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  54

  54. CHECK FOR OPEN IN CAN MAIN BUS LINES (POWER STEERING ECU ASSEMBLY) 
    1. Reconnect the K105 No. 4 global CAN junction connector.
    2. Disconnect the K44 power steering ECU assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K44-7 (CANH) - K44-8 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE POWER STEERING ECU ASSEMBLY 

    Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (POWER STEERING ECU ASSEMBLY - NO. 4 GLOBAL CAN JUNCTION CONNECTOR) 

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