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Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission (1 Of 2) >> Basic Inspection >> Additional Service When Replacing TCM And Transaxle Assembly >> Work Procedure

Work Procedure

NOTE: SYMBOL Before starting, make sure:
  • ASIST on the CONSULT has been synchronized to the current date.
  • All CONSULT software updates (if any) have been installed.
  1. PRINT CURRENT CALIBRATION DATA 

    SYMBOL With CONSULT

    1. Turn ignition switch ON.
    2. Connect CONSULT.
    3. Select "CALIB DATA" in "TRANSMISSION".
    4. Print page 1 of 7.
      NOTE: SYMBOL This screen print is used for warranty documentation.

    >>

    GO TO 2.

  2. SAVE 'OPERATION LOG' 

    SYMBOL With CONSULT Save Operation Log, according to the procedure of "Programming" in CONSULT Operation Manual.

    NOTE: SYMBOL
    • TCM part number is saved in Operation Log saved in CONSULT.
    • If "TRANSMISSION" is not displayed and TCM part number cannot be saved on CONSULT, GO TO 3.

    >>

    GO TO 3.

  3. CHECK THE SERIAL NUMBER (PART 1) 

    Write down the serial number of new transaxle assembly.

    GNSDB126483Courtesy of NISSAN NORTH AMERICA, INC.

    >>

    GO TO 4.

  4. REPLACE TCM AND TRANSAXLE ASSEMBLY 
    1. Turn ignition switch OFF.
    2. Replace TCM and transaxle assembly. Replace Removal and Installation (TCM) and Removal and Installation (transaxle assembly).

    >>

    GO TO 5.

  5. CHECK 'OPERATION LOG' 

    SYMBOL With CONSULT Check Operation Log saved before replacing transaxle assembly, according to the procedure of "Programming" in CONSULT Operation Manual.

    NOTE: SYMBOL For the vehicle that the programming is to be performed, check if Operation Log of Vehicle Identification Number (VIN) is in Saved Data List.

    Is there an applicable Operation Log in the Saved Data List?

    >>

    GO TO 6.

    >>

    GO TO 7.

  6. PERFORM TCM PROGRAMMING 

    SYMBOL With CONSULT Perform TCM programming, according to "Programming" of CONSULT Operation Manual. Refer to CONSULT Operation Manual.

    CAUTION:

    During programming, maintain the following conditions:

    • Ignition switch: ON
    • Electric load: OFF
    • Brake pedal: Not depressed
    • Battery voltage: 12 - 13.5 V (Be sure to check the value of battery voltage by selecting "BATTERY VOLT" in "Data monitor" of CONSULT.)

    >>

    GO TO 9.

  7. READ IN TCM ROM DATA ID BY 'EPC LINKED' 

    SYMBOL With CONSULT Obtain TCM ROM data ID by EPC (service parts catalog), according to the procedure of 'EPC linked' in CONSULT Operation Manual. Refer to CONSULT Operation Manual.

    NOTE: SYMBOL "EPC linked'" allows an appropriate programming by obtaining TCM ROM data ID from EPC (service parts catalog) even when the part number cannot be obtained from the old TCM used before replacing with a new one.

    >>

    GO TO 8.

  8. PERFORM TCM PROGRAMMING (EPC LINKED) 

    SYMBOL With CONSULT Perform TCM programming according to the procedure of 'EPC linked' in CONSULT Operation Manual. Refer to CONSULT Operation Manual.

    CAUTION:

    During programming, maintain the following conditions:

    • Ignition switch: ON
    • Electric load: OFF
    • Brake pedal: Not depressed
    • Battery voltage: 12 - 13.5 V (Be sure to check the value of battery voltage by selecting "BATTERY VOLT" in "Data monitor" of CONSULT.)

    >>

    GO TO 9.

  9. CHECK THE SERIAL NUMBER (PART 2) 

    SYMBOL With CONSULT

    1. Turn ignition switch ON.
    2. Insert the supplied CD into CONSULT.
    3. Select "Work Support" in "TRANSMISSION".
    4. Select "WRITE IP CHARA - REPLACEMENT AT/CVT".
    5. Select "OK" on the "Select IP characteristics data file" window.
    6. Open the calibration file located on the supplied CD.
    7. Confirm that the serial number (calibration file number) displayed on CONSULT screen matches the serial number (calibration file number) on the transaxle assembly.
    8. Select "Next" on the "WRITE IP CHARA - REPLACEMENT AT/CVT" Work Support screen.

    >>

    GO TO 10.

  10. WRITE THE TCM DATA (IP CHARACTERISTICS VALUE) 
    NOTE: SYMBOL Write data saved in CONSULT into a new TCM according to the following instructions:

    SYMBOL With CONSULT

    1. Turn ignition switch ON, engine OFF.
    2. Press the brake pedal.
    3. Depress the accelerator pedal half way and hold, then press "START" on the CONSULT screen.
    4. Write data to the TCM according to the instructions on the CONSULT screen.
      NOTE: SYMBOL When the calibration data has been written to the TCM, the current status will indicate "Complete".
    5. Select "END".

    >>

    GO TO 11.

  11. PRINT NEW CALIBRATION DATA 

    SYMBOL With CONSULT

    1. Select "CALIB DATA" in "TRANSMISSION".
    2. Print page 1 of 7.
      NOTE: SYMBOL This screen print is used for warranty documentation.

    >>

    GO TO 12.

  12. PERFORM G-SENSOR CALIBRATION 

    Perform G-Sensor Calibration. Refer to Description .

    >>

    GO TO 13.

  13. PERFORM CLUTCH POINT LEARNING 

    Perform Clutch Point Learning. Refer to Description .

    >>

    GO TO 14.

  14. PERFORM SELECT LEARNING (DRIVE/REVERSE LEARNING) 
    NOTE: SYMBOL Always perform Clutch Point Learning before Select Learning.
    1. Perform Select Learning. Refer to Work Procedure .
    2. Clear any DTCs that may have set and then test drive the vehicle.

    >>

    WORK END

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