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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 4 Line [09/2022 - 11/2022] >> Procedure

Check Bus 4 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 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.
      GTY1119392Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      I173-24 (CA2H) - I173-23 (CA2L) Cable disconnected from negative (-) battery terminal Below 70 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  41

    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.
      GTY1119392Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      I173-24 (CA2H) - I173-23 (CA2L) Cable disconnected from negative (-) battery terminal 54 Ω or higher

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  29

    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.
      GTY1115402Courtesy 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
      I173-24 (CA2H) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      I173-23 (CA2L) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  17

    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.
      GTY1115398Courtesy 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
      I173-24 (CA2H) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      I173-23 (CA2L) - 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  5

  5. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 10 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the A142 No. 10 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1115468Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-4 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A142-8 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  8

    Result: 

    OK 

    See step  6

  6. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 10 CAN JUNCTION CONNECTOR - NO. 13 CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1115467Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to No. 13 CAN Junction Connector

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-3 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A142-7 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  10

    Result: 

    OK 

    See step  7

  7. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 10 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1118966Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to Brake Actuator Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-2 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A142-6 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 10 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  9

  8. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 10 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.
      GTY1115468Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-4 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A142-8 (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. 10 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  9. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 10 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 
    1. Disconnect the A51 or A140 brake actuator assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1118966Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to Brake Actuator Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-2 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      A142-6 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE BRAKE ACTUATOR ASSEMBLY 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 10 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 

  10. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 13 CAN JUNCTION CONNECTOR - NO. 10 CAN JUNCTION CONNECTOR) 
    1. Disconnect the I187 No. 13 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1115415Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to No. 10 CAN Junction Connector

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-2 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      I187-6 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 13 CAN JUNCTION CONNECTOR - NO. 10 CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  11

  11. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 13 CAN JUNCTION CONNECTOR - AIRBAG SENSOR ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1115414Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Airbag Sensor Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-1 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      I187-5 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  14

    Result: 

    OK 

    See step  12

  12. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 13 CAN JUNCTION CONNECTOR - STEERING SENSOR) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1115413Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Steering Sensor

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-3 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      I187-7 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  15

    Result: 

    OK 

    See step  13

  13. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 13 CAN JUNCTION CONNECTOR - POWER STEERING ECU WITH MOTOR ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1115412Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Power Steering ECU with Motor Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-4 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      I187-8 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 13 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  16

  14. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 13 CAN JUNCTION CONNECTOR - AIRBAG SENSOR ASSEMBLY) 
    1. Disconnect the I47 airbag sensor assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1115414Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Airbag Sensor Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-1 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      I187-5 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE AIRBAG SENSOR ASSEMBLY 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 13 CAN JUNCTION CONNECTOR - AIRBAG SENSOR ASSEMBLY) 

  15. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 13 CAN JUNCTION CONNECTOR - STEERING SENSOR) 
    1. Disconnect the I211 or I46 steering sensor connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1115413Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Steering Sensor

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-3 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      I187-7 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE STEERING SENSOR 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 13 CAN JUNCTION CONNECTOR - STEERING SENSOR) 

  16. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 13 CAN JUNCTION CONNECTOR - POWER STEERING ECU WITH MOTOR ASSEMBLY) 
    1. Disconnect the I21 power steering ECU with motor assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1115412Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Power Steering ECU with Motor Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-4 (CANH) - I26-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      I187-8 (CANL) - I26-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE POWER STEERING ECU WITH MOTOR ASSEMBLY 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 13 CAN JUNCTION CONNECTOR - POWER STEERING ECU WITH MOTOR ASSEMBLY) 

  17. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 10 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the A142 No. 10 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1115411Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-4 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      A142-8 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  20

    Result: 

    OK 

    See step  18

  18. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 10 CAN JUNCTION CONNECTOR - NO. 13 CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1115410Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to No. 13 CAN Junction Connector

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-3 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      A142-7 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  22

    Result: 

    OK 

    See step  19

  19. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 10 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1115409Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to Brake Actuator Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-2 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      A142-6 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 10 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  21

  20. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 10 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.
      GTY1115411Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-4 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      A142-8 (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. 10 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  21. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 10 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 
    1. Disconnect the A51 or A140 brake actuator assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1115409Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to Brake Actuator Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-2 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      A142-6 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE BRAKE ACTUATOR ASSEMBLY 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 10 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 

  22. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 13 CAN JUNCTION CONNECTOR - NO. 10 CAN JUNCTION CONNECTOR) 
    1. Disconnect the I187 No. 13 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1115418Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to No. 10 CAN Junction Connector

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-2 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      I187-6 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 13 CAN JUNCTION CONNECTOR - NO. 10 CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  23

  23. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 13 CAN JUNCTION CONNECTOR - AIRBAG SENSOR ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1115424Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Airbag Sensor Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-1 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      I187-5 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  26

    Result: 

    OK 

    See step  24

  24. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 13 CAN JUNCTION CONNECTOR - STEERING SENSOR) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1115437Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Steering Sensor

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-3 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      I187-7 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  27

    Result: 

    OK 

    See step  25

  25. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 13 CAN JUNCTION CONNECTOR - POWER STEERING ECU WITH MOTOR ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1118952Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Power Steering ECU with Motor Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-4 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      I187-8 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 13 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  28

  26. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 13 CAN JUNCTION CONNECTOR - AIRBAG SENSOR ASSEMBLY) 
    1. Disconnect the I47 airbag sensor assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1115424Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Airbag Sensor Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-1 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      I187-5 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE AIRBAG SENSOR ASSEMBLY 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 13 CAN JUNCTION CONNECTOR - AIRBAG SENSOR ASSEMBLY) 

  27. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 13 CAN JUNCTION CONNECTOR - STEERING SENSOR) 
    1. Disconnect the I211 or I46 steering sensor connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1115437Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Steering Sensor

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-3 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      I187-7 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE STEERING SENSOR 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 13 CAN JUNCTION CONNECTOR - STEERING SENSOR) 

  28. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 13 CAN JUNCTION CONNECTOR - POWER STEERING ECU WITH MOTOR ASSEMBLY) 
    1. Disconnect the I21 power steering ECU with motor assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1118952Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Power Steering ECU with Motor Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-4 (CANH) - I26-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      I187-8 (CANL) - I26-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE POWER STEERING ECU WITH MOTOR ASSEMBLY 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 13 CAN JUNCTION CONNECTOR - POWER STEERING ECU WITH MOTOR ASSEMBLY) 

  29. CHECK FOR SHORT IN CAN BUS LINES (NO. 10 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the A142 No. 10 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1116948Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-4 (CANH) - A142-8 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  32

    Result: 

    OK 

    See step  30

  30. CHECK FOR SHORT IN CAN BUS LINES (NO. 10 CAN JUNCTION CONNECTOR - NO. 13 CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1116949Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to No. 13 CAN Junction Connector

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-3 (CANH) - A142-7 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  34

    Result: 

    OK 

    See step  31

  31. CHECK FOR SHORT IN CAN BUS LINES (NO. 10 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1116972Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to Brake Actuator Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-2 (CANH) - A142-6 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 10 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  33

  32. CHECK FOR SHORT IN CAN BUS LINES (NO. 10 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.
      GTY1116948Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-4 (CANH) - A142-8 (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. 10 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  33. CHECK FOR SHORT IN CAN BUS LINES (NO. 10 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 
    1. Disconnect the A51 or A140 brake actuator assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1116972Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to Brake Actuator Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-2 (CANH) - A142-6 (CANL) Cable disconnected from negative (-) battery terminal 1 MΩ or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE BRAKE ACTUATOR ASSEMBLY 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 10 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 

  34. CHECK FOR SHORT IN CAN BUS LINES (NO. 13 CAN JUNCTION CONNECTOR - NO. 10 CAN JUNCTION CONNECTOR) 
    1. Reconnect the A142 No. 10 CAN junction connector.
    2. Disconnect the I187 No. 13 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY1119265Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to No. 10 CAN Junction Connector

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-2 (CANH) - I187-6 (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. 13 CAN JUNCTION CONNECTOR - NO. 10 CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  35

  35. CHECK FOR SHORT IN CAN BUS LINES (NO. 13 CAN JUNCTION CONNECTOR - AIRBAG SENSOR ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1116973Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Airbag Sensor Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-1 (CANH) - I187-5 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  38

    Result: 

    OK 

    See step  36

  36. CHECK FOR SHORT IN CAN BUS LINES (NO. 13 CAN JUNCTION CONNECTOR - STEERING SENSOR) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1116977Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Steering Sensor

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-3 (CANH) - I187-7 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  39

    Result: 

    OK 

    See step  37

  37. CHECK FOR SHORT IN CAN BUS LINES (NO. 13 CAN JUNCTION CONNECTOR - POWER STEERING ECU WITH MOTOR ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1116975Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Power Steering ECU with Motor Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-4 (CANH) - I187-8 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 13 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  40

  38. CHECK FOR SHORT IN CAN BUS LINES (NO. 13 CAN JUNCTION CONNECTOR - AIRBAG SENSOR ASSEMBLY) 
    1. Disconnect the I47 airbag sensor assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1116973Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Airbag Sensor Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-1 (CANH) - I187-5 (CANL) Cable disconnected from negative (-) battery terminal 1 MΩ or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE AIRBAG SENSOR ASSEMBLY 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 13 CAN JUNCTION CONNECTOR - AIRBAG SENSOR ASSEMBLY) 

  39. CHECK FOR SHORT IN CAN BUS LINES (NO. 13 CAN JUNCTION CONNECTOR - STEERING SENSOR) 
    1. Disconnect the I211 or I46 steering sensor connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1116977Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Steering Sensor

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-3 (CANH) - I187-7 (CANL) Cable disconnected from negative (-) battery terminal 1 MΩ or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE STEERING SENSOR 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 13 CAN JUNCTION CONNECTOR - STEERING SENSOR) 

  40. CHECK FOR SHORT IN CAN BUS LINES (NO. 13 CAN JUNCTION CONNECTOR - POWER STEERING ECU WITH MOTOR ASSEMBLY) 
    1. Disconnect the I21 power steering ECU with motor assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1116975Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Power Steering ECU with Motor Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-4 (CANH) - I187-8 (CANL) Cable disconnected from negative (-) battery terminal 1 MΩ or higher

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE POWER STEERING ECU WITH MOTOR ASSEMBLY 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 13 CAN JUNCTION CONNECTOR - POWER STEERING ECU WITH MOTOR ASSEMBLY) 

  41. 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.
      GTY1115371Courtesy 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
      I173-24 (CA2H) - I173-23 (CA2L) 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  42

  42. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 10 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Reconnect the I173 central gateway ECU (network gateway ECU) connector.
    2. Disconnect the A142 No. 10 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY1116948Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-4 (CANH) - A142-8 (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. 10 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

    Result: 

    OK 

    See step  43

  43. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 10 CAN JUNCTION CONNECTOR - NO. 13 CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1116949Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 10 CAN Junction Connector)      		 *b to No. 13 CAN Junction Connector

      Standard Resistance

      Tester Connection Condition Specified Condition
      A142-3 (CANH) - A142-7 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 10 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  44

  44. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 13 CAN JUNCTION CONNECTOR - NO. 10 CAN JUNCTION CONNECTOR) 
    1. Reconnect the A142 No. 10 CAN junction connector.
    2. Disconnect the I187 No. 13 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY1119265Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to No. 10 CAN Junction Connector

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-2 (CANH) - I187-6 (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. 13 CAN JUNCTION CONNECTOR - NO. 10 CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  45

  45. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 13 CAN JUNCTION CONNECTOR - POWER STEERING ECU WITH MOTOR ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1116975Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 13 CAN Junction Connector)      		 *b to Power Steering ECU with Motor Assembly

      Standard Resistance

      Tester Connection Condition Specified Condition
      I187-4 (CANH) - I187-8 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 13 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  46

  46. CHECK FOR OPEN IN CAN MAIN BUS LINES (POWER STEERING ECU WITH MOTOR ASSEMBLY) 
    1. Reconnect the I187 No. 13 CAN junction connector.
    2. Disconnect the I21 power steering ECU with motor assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I21-7 (CANH) - I21-8 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      GTY1117454Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Power Steering ECU with Motor Assembly)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE POWER STEERING ECU WITH MOTOR ASSEMBLY 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (POWER STEERING ECU WITH MOTOR ASSEMBLY - NO. 13 CAN JUNCTION CONNECTOR) 

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