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Home >> Lexus >> 2024 >> NX 350 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> 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 U0122: Lost Communication With Vehicle Dynamics Control Module; DTC U1170-87: Lost Communication with Brake System Control Module (ch2) Missing Message [11/2021 - 03/2023] >> Procedure
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DTC U115C-87: Lost Communication with ECM/PCM "A" (ch5) Missing Message; DTC U0122: Lost Communication With Vehicle Dynamics Control Module; DTC U1170-87: Lost Communication with Brake System Control Module (ch2) Missing Message [11/2021 - 03/2023]: Procedure

  1. RECONFIRM DTC OUTPUT 
    1. Check for DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      Only DTC U115C-87 is output A
      DTCs other than DTC U115C-87 are also output B

    Result: 

    B 

    See step  5

    Result: 

    A 

    See step  2

  2. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

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

    Result: 

    B 

    See step  4

    Result: 

    A 

    See step  3

  3. CHECK FOR OPEN IN CAN BUS LINES (ECM - NO. 2 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the A20 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A20-7 (CACH) - A20-17 (CACL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

      Result

      Result 
      OK
      NG

    Result: 

    OK 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (ECM) 

  4. CHECK FOR OPEN IN CAN BUS LINES (ECM - NO. 2 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the A19 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A19-34 (CACH) - A19-33 (CACL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

      Result

      Result 
      OK
      NG

    Result: 

    OK 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (ECM) 

  5. RECONFIRM DTC OUTPUT 
    1. Check for DTCs.

      Powertrain > Stop and Start > Trouble Codes 

      Result

      Result Proceed to
      Only DTC U1170-87 is output A
      DTCs other than DTC U1170-87 are also output B

    Result: 

    B 

    See step  7

    Result: 

    A 

    See step  6

  6. CHECK FOR OPEN IN CAN BUS LINES (ENGINE STOP AND START ECU - NO. 2 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the D40 engine stop and start ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D40-15 (LC1H) - D40-16 (LC1L) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

      Result

      Result 
      OK
      NG

    Result: 

    OK 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (ENGINE STOP AND START ECU) 

  7. RECONFIRM DTC OUTPUT 
    1. Check for DTCs.

      Chassis > Adaptive Variable Suspension System > Trouble Codes 

      Result

      Result Proceed to
      Only DTC U0122 is output A
      DTCs other than DTC U0122 are also output B

    Result: 

    B 

    See step  10

    Result: 

    A 

    See step  8

  8. CHECK FOR OPEN IN CAN BUS LINES (ABSORBER CONTROL ECU - NO. 7 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the G2 absorber control ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G2-19 (CA2H) - G2-18 (CA2L) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

      Result

      Proceed to 
      OK
      NG

    Result: 

    OK 

    REPLACE ABSORBER CONTROL ECU. Refer to  REMOVAL [11/2021 - 03/2023] 

    Result: 

    NG 

    See step  9

  9. CHECK FOR OPEN IN CAN BUS LINES (ABSORBER CONTROL ECU - NO. 7 CAN JUNCTION CONNECTOR) 
    1. Reconnect the G2 absorber control ECU 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
      G65-3 (CANH) - G65-14 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher

      Result

      Proceed to 
      OK
      NG

    Result: 

    OK 

    See step  56

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (ABSORBER CONTROL ECU) 

  10. 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  56

    Result: 

    OK 

    See step  11

  11. 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  42

    Result: 

    OK 

    See step  12

  12. 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  28

    Result: 

    OK 

    See step  13

  13. 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  14

  14. 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  18

    Result: 

    OK 

    See step  15

  15. 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  22

    Result: 

    OK 

    See step  16

  16. 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  21

    Result: 

    OK 

    See step  17

  17. 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  19

  18. 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) 

  19. 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  20

  20. 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 - ] 

  21. 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) 

  22. 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  23

  23. 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  27

    Result: 

    OK 

    See step  24

  24. 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  25

  25. 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  26

  26. 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 [11/2021 - 03/2023] 

    Result: 

    NG 

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

  27. 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) 

  28. 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  32

    Result: 

    OK 

    See step  29

  29. 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  36

    Result: 

    OK 

    See step  30

  30. 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  35

    Result: 

    OK 

    See step  31

  31. 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  33

  32. 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) 

  33. 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  34

  34. 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 - ] 

  35. 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) 

  36. 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  37

  37. 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  41

    Result: 

    OK 

    See step  38

  38. 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  39

  39. 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  40

  40. 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 [11/2021 - 03/2023] 

    Result: 

    NG 

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

  41. 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) 

  42. 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  46

    Result: 

    OK 

    See step  43

  43. 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  50

    Result: 

    OK 

    See step  44

  44. 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  49

    Result: 

    OK 

    See step  45

  45. 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  47

  46. 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) 

  47. 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  48

  48. 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 - ] 

  49. 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) 

  50. 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  51

  51. 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  55

    Result: 

    OK 

    See step  52

  52. 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  53

  53. 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  54

  54. 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 [11/2021 - 03/2023] 

    Result: 

    NG 

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

  55. 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) 

  56. 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  61

    Result: 

    OK 

    See step  57

  57. 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  58

  58. 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  59

  59. 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  60

  60. 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) 

  61. 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) 

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