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Home >> Lexus >> 2025 >> NX 350h >> Repair and Diagnosis >> External Pages >> Different car >> Section 62 (Can Communication System - Circuit Tests (1 Of 9) & Diagnostic Codes) >> CAN COMMUNICATION SYSTEM (for Gasoline Model) >> DTC U115C-87: Lost Communication with ECM/PCM "A" (ch5) Missing Message; DTC U1170-87: Lost Communication with Brake System Control Module (ch2) Missing Message; DTC U1171-87: Lost Communication with Brake System Control Module (ch3) Missing Message [03/2023 - ] >> Procedure

DTC U115C-87: Lost Communication with ECM/PCM "A" (ch5) Missing Message; DTC U1170-87: Lost Communication with Brake System Control Module (ch2) Missing Message; DTC U1171-87: Lost Communication with Brake System Control Module (ch3) Missing Message [03/2023 - ]: Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2025 Lexus NX 350, 2025 Lexus NX 250, 2024 Lexus NX 350, 2024 Lexus NX 250, and 2023 Lexus NX 350. 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.
      GTY1063525Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (No. 2 CAN Junction Connector)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-2 (CANH) - D89-13 (CANL) Cable disconnected from negative (-) battery terminal Below 70 Ω

      Result

      Result
      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.
      GTY1063513Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (No. 2 CAN Junction Connector)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-2 (CANH) - D89-13 (CANL) Cable disconnected from negative (-) battery terminal 54 Ω or higher

      Result

      Result
      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.
      GTY1063565Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Component with harness connected
      (No. 2 CAN Junction Connector)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-2 (CANH) - D66-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      D89-13 (CANL) - D66-16 (BAT)

      Result

      Result
      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.
      GTY1063401Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Component with harness connected
      (No. 2 CAN Junction Connector)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-2 (CANH) - D66-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      D89-13 (CANL) - D66-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    INSPECT FOR INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ] 

    Result: 

    NG 

    See step  5

  5. CHECK FOR SHORT TO GND IN CAN MAIN BUS LINE (NO. 2 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 
    1. Disconnect the D89 No. 2 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-2 (CANH) - D66-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      D89-13 (CANL) - D66-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  9

    Result: 

    OK 

    See step  6

  6. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 2 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-1 (CANH) - D66-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      D89-12 (CANL) - D66-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  13

    Result: 

    OK 

    See step  7

  7. CHECK FOR SHORT TO GND IN CAN BRANCH BUS LINE (NO. 2 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-4 (CANH) - D66-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      D89-15 (CANL) - D66-4 (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. 2 CAN JUNCTION CONNECTOR - ECM) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-3 (CANH) - D66-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      D89-14 (CANL) - D66-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 2 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  11

  9. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 2 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 
    1. Disconnect the A36 brake actuator assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-2 (CANH) - D66-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      D89-13 (CANL) - D66-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 

  10. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 2 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU) 
    1. Disconnect the D40 Engine Stop and Start ECU connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-4 (CANH) - D66-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      D89-15 (CANL) - D66-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE ENGINE STOP AND START ECU. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH BUS LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU) 

  11. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 2 CAN JUNCTION CONNECTOR - ECM) 
    1. Disconnect the A20 or A19 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-3 (CANH) - D66-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      D89-14 (CANL) - D66-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH BUS LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - ECM) 

    Result: 

    OK 

    See step  12

  12. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      for A25A-FKS A
      for T24A-FTS B

    Result: 

    A 

    REPLACE ECM. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    B 

    REPLACE ECM. Refer to  REMOVAL [11/2021 - ] 

  13. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 2 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR) 
    1. Disconnect the G65 No. 7 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-1 (CANH) - D66-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      G65-12 (CANL) - D66-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  14

  14. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 7 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-2 (CANH) - D66-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      G65-13 (CANL) - D66-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  17

    Result: 

    OK 

    See step  15

  15. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      w/ Adaptive Variable Suspension System A
      w/o Adaptive Variable Suspension System B

    Result: 

    B 

    REPLACE NO. 7 CAN JUNCTION CONNECTOR 

    Result: 

    A 

    See step  16

  16. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 7 CAN JUNCTION CONNECTOR - ABSORBER CONTROL ECU) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-3 (CANH) - D66-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      G65-14 (CANL) - D66-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 7 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  18

  17. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 7 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 
    1. Disconnect the G66 No. 2 CAN junction terminal.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-2 (CANH) - D66-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      G65-13 (CANL) - D66-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 2 CAN JUNCTION TERMINAL 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 7 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 

  18. CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 7 CAN JUNCTION CONNECTOR - ABSORBER CONTROL ECU) 
    1. Disconnect the G2 absorber control ECU connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-3 (CANH) - D66-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher
      G65-14 (CANL) - D66-4 (CG)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE ABSORBER CONTROL ECU. Refer to  REMOVAL [03/2023 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH BUS LINE OR CONNECTOR (NO. 7 CAN JUNCTION CONNECTOR - ABSORBER CONTROL ECU) 

  19. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 2 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 
    1. Disconnect the D89 No. 2 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-2 (CANH) - D66-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      D89-13 (CANL) - D66-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  23

    Result: 

    OK 

    See step  20

  20. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 2 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-1 (CANH) - D66-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      D89-12 (CANL) - D66-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  27

    Result: 

    OK 

    See step  21

  21. CHECK FOR SHORT TO +B IN CAN BRANCH BUS LINE (NO. 2 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-4 (CANH) - D66-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      D89-15 (CANL) - D66-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  24

    Result: 

    OK 

    See step  22

  22. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 2 CAN JUNCTION CONNECTOR - ECM) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-3 (CANH) - D66-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      D89-14 (CANL) - D66-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 2 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  25

  23. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 2 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 
    1. Disconnect the A36 brake actuator assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-2 (CANH) - D66-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      D89-13 (CANL) - D66-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 

  24. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 2 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU) 
    1. Disconnect the D40 Engine Stop and Start ECU connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-4 (CANH) - D66-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      D89-15 (CANL) - D66-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE ENGINE STOP AND START ECU. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH BUS LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU) 

  25. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 2 CAN JUNCTION CONNECTOR - ECM) 
    1. Disconnect the A20 or A19 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-3 (CANH) - D66-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      D89-14 (CANL) - D66-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH BUS LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - ECM) 

    Result: 

    OK 

    See step  26

  26. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      for A25A-FKS A
      for T24A-FTS B

    Result: 

    A 

    REPLACE ECM. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    B 

    REPLACE ECM. Refer to  REMOVAL [11/2021 - ] 

  27. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 2 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR) 
    1. Disconnect the G65 No. 7 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-1 (CANH) - D66-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      G65-12 (CANL) - D66-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  28

  28. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 7 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-2 (CANH) - D66-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      G65-13 (CANL) - D66-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    See step  31

    Result: 

    OK 

    See step  29

  29. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      w/ Adaptive Variable Suspension System A
      w/o Adaptive Variable Suspension System B

    Result: 

    B 

    REPLACE NO. 7 CAN JUNCTION CONNECTOR 

    Result: 

    A 

    See step  30

  30. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 7 CAN JUNCTION CONNECTOR - ABSORBER CONTROL ECU) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-3 (CANH) - D66-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      G65-14 (CANL) - D66-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 7 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  32

  31. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 7 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 
    1. Disconnect the G66 No. 2 CAN junction terminal.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-2 (CANH) - D66-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      G65-13 (CANL) - D66-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 2 CAN JUNCTION TERMINAL 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 7 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 

  32. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 7 CAN JUNCTION CONNECTOR - ABSORBER CONTROL ECU) 
    1. Disconnect the G2 absorber control ECU connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-3 (CANH) - D66-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher
      G65-14 (CANL) - D66-16 (BAT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE ABSORBER CONTROL ECU. Refer to  REMOVAL [03/2023 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH BUS LINE OR CONNECTOR (NO. 7 CAN JUNCTION CONNECTOR - ABSORBER CONTROL ECU) 

  33. CHECK FOR SHORT IN CAN MAIN BUS LINES (NO. 2 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 
    1. Disconnect the D89 No. 2 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-2 (CANH) - D89-13 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result 
      OK
      NG

    Result: 

    NG 

    See step  37

    Result: 

    OK 

    See step  34

  34. CHECK FOR SHORT IN CAN BUS LINES (NO. 2 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-1 (CANH) - D89-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result 
      OK
      NG

    Result: 

    NG 

    See step  41

    Result: 

    OK 

    See step  35

  35. CHECK FOR SHORT IN CAN BRANCH BUS LINES (NO. 2 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-4 (CANH) - D89-15 (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. 2 CAN JUNCTION CONNECTOR - ECM) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-3 (CANH) - D89-14 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Result

      Result 
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 2 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  39

  37. CHECK FOR SHORT IN CAN BUS LINES (NO. 2 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 
    1. Disconnect the A36 brake actuator assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-2 (CANH) - D89-13 (CANL) Cable disconnected from negative (-) battery terminal 1 MΩ or higher

      Result

      Result 
      OK
      NG

    Result: 

    OK 

    REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 

  38. CHECK FOR SHORT IN CAN BUS LINES (NO. 2 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU) 
    1. Disconnect the D40 Engine Stop and Start ECU connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-4 (CANH) - D89-15 (CANL) Cable disconnected from negative (-) battery terminal 1 MΩ or higher

      Result

      Result 
      OK
      NG

    Result: 

    OK 

    REPLACE ENGINE STOP AND START ECU. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH BUS LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU) 

  39. CHECK FOR SHORT IN CAN BUS LINES (NO. 2 CAN JUNCTION CONNECTOR - ECM) 
    1. Disconnect the A20 or A19 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-3 (CANH) - D89-14 (CANL) Cable disconnected from negative (-) battery terminal 1 MΩ or higher

      Result

      Result 
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH BUS LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - ECM) 

    Result: 

    OK 

    See step  40

  40. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      for A25A-FKS A
      for T24A-FTS B

    Result: 

    A 

    REPLACE ECM. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    B 

    REPLACE ECM. Refer to  REMOVAL [11/2021 - ] 

  41. CHECK FOR SHORT IN CAN BUS LINES (NO. 2 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR) 
    1. Reconnect the D89 No. 2 CAN junction connector.
    2. Disconnect the G65 No. 7 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-1 (CANH) - G65-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result 
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  42

  42. CHECK FOR SHORT IN CAN BUS LINES (NO. 7 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-2 (CANH) - G65-13 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result 
      OK
      NG

    Result: 

    NG 

    See step  45

    Result: 

    OK 

    See step  43

  43. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      w/ Adaptive Variable Suspension System A
      w/o Adaptive Variable Suspension System B

    Result: 

    B 

    REPLACE NO. 7 CAN JUNCTION CONNECTOR 

    Result: 

    A 

    See step  44

  44. CHECK FOR SHORT IN CAN BRANCH BUS LINES (NO. 7 CAN JUNCTION CONNECTOR - ABSORBER CONTROL ECU) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-3 (CANH) - G65-14 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Result

      Result 
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 7 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  46

  45. CHECK FOR SHORT IN CAN BUS LINES (NO. 7 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 
    1. Disconnect the G66 No. 2 CAN junction terminal.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-2 (CANH) - G65-13 (CANL) Cable disconnected from negative (-) battery terminal 1 MΩ or higher

      Result

      Result 
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 2 CAN JUNCTION TERMINAL 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 7 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 

  46. CHECK FOR SHORT IN CAN BUS LINES (NO. 7 CAN JUNCTION CONNECTOR - ABSORBER CONTROL ECU) 
    1. Disconnect the G2 absorber control ECU connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-3 (CANH) - G65-14 (CANL) Cable disconnected from negative (-) battery terminal 1 MΩ or higher

      Result

      Result 
      OK
      NG

    Result: 

    OK 

    REPLACE ABSORBER CONTROL ECU. Refer to  REMOVAL [03/2023 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 7 CAN JUNCTION CONNECTOR - ABSORBER CONTROL ECU) 

  47. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 2 CAN JUNCTION CONNECTOR) 
    1. Disconnect the D89 No. 2 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-2 (CANH) - D89-13 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result 
      OK
      NG

    Result: 

    NG 

    See step  49

    Result: 

    OK 

    See step  48

  48. CHECK FOR OPEN IN CAN BUS LINES (NO. 2 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D89-1 (CANH) - D89-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result 
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 2 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  50

  49. CHECK FOR OPEN IN CAN BUS LINES (NO. 2 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 
    1. Reconnect the D89 No. 2 CAN junction connector.
    2. Disconnect the A36 brake actuator assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A36-11 (CA2H) - A36-25 (CA2L) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - BRAKE ACTUATOR ASSEMBLY) 

  50. CHECK FOR OPEN IN CAN BUS LINES (NO. 2 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR) 
    1. Reconnect the D89 No. 2 CAN junction connector.
    2. Disconnect the G65 No. 7 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-1 (CANH) - G65-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result 
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - NO. 7 CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  51

  51. CHECK FOR OPEN IN CAN BUS LINES (NO. 7 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G65-2 (CANH) - G65-13 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result 
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 7 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  52

  52. CHECK FOR OPEN IN CAN BUS LINES (NO. 7 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 
    1. Reconnect the G65 No. 7 CAN junction connector.
    2. Disconnect the G66 No. 2 CAN junction terminal.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G66-3 (CANH) - G66-2 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Result 
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 2 CAN JUNCTION TERMINAL 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 7 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 

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