Nissan Sentra B18 (2020-2025) Service Manual: Additional Service When Replacing Transaxle Assembly

Description

Perform the following work when the transaxle assembly is replaced. For work procedure, refer to Work Procedure.

WORK BEFORE TRANSAXLE ASSEMBLY REPLACEMENT

New transaxle assembly serial number checking

WORK AFTER TRANSAXLE ASSEMBLY REPLACEMENT

• Calibration data (IP characteristics value) writing

  Note:

  TCM performs accurate control by retrieving data (inherent characteristic value) of each solenoid. For this reason, after replacing transaxle assembly, it is necessary to erase data stored in TCM and write new data.

• Decel G sensor calibration

• Clutch point learning

• Torque converter clutch point learning

• Select learning (Drive/Reverse learning)

• CVT fluid degradation level data erasing

• Vechie condition checking

Work Procedure

• ASIST on the CONSULT has been synchronized to the current date.

• All CONSULT software updates (if any) have been installed.

1. CHECK SERIAL NUMBER OF NEW TRANSAXLE ASSEMBLY

   Write down the serial number of new transaxle assembly.

   
   >>

   GO TO 2.

2. REPLACE TRANSAXLE ASSEMBLY

   1. Ignition switch OFF.

   2. Replace transaxle assembly. Refer to Removal and Installation.

   >>

   GO TO 3.

3. WRITE CALIBRATION DATA (IP CHARACTERISTICS VALUE) - 1

   Note:

   Write data of new solenoid in TCM according to the following instructions:

   With CONSULT

   1. Ignition switch ON.

   2. Select “Work Support” in “TRANSMISSION”.

   3. Select “WRITE IP CHARA - INPUT SERIAL NUMBER”.

   4. Write data to the TCM according to the instructions on the CONSULT screen.

      Note:

      When the calibration data has been written to the TCM, the current status will indicate “Complete”.

   5. Touch “End”.

   Is the calibrationdata written successfully?

   YES >>

   GO TO 7.

   NO >>

   GO TO 4.

4. CHECK PRESENCE OF CD

   Make sure the CD is included with the new transaxle assembly.

   Is the CD included with the new transaxle assembly?

   YES >>

   GO TO 5.

   NO >>

   Retry step 3.

5. CHECK SERIAL NUMBER OF CALIBRATION FILE

   With CONSULT

   1. 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 on the transaxle assembly.

      Note:

      For the serial number on the transaxle assembly, check the alphanumeric characters in the 1st, 4th through 9th digits. (Example: X23100001 → X100001)

   8. Select “Next” on the “WRITE IP CHARA - REPLACEMENT AT/CVT” Work Support screen.

   >>

   GO TO 6.

6. WRITE CALIBRATION DATA (IP CHARACTERISTICS VALUE) - 2

   Note:

   Write data of new solenoid in TCM according to the following instructions:

   With CONSULT

   1. Ignition switch ON, engine OFF.

   2. Erase memory data from the TCM according to the instructions on the CONSULT screen.

   3. Operate the ignition switch according to the instructions on the CONSULT screen.

   4. Write data to the TCM according to the instructions on the CONSULT screen.

      Note:

      When the calibration data has been written to the TCM, the current status will indicate “Complete”.

   5. Touch “End”.

   >>

   GO TO 7.

7. PERFORM DECEL G SENSOR CALIBRATION

   Perform Decel G Sensor Calibration. Refer to Work Procedure.

   >>

   GO TO 8.

8. PERFORM CLUTCH POINT LEARNING

   Perform Clutch Point Learning. Refer to Description.

   >>

   GO TO 9.

9. PERFORM TORQUE CONVERTER CLUTCH POINT LEARNING

   Perform Torque Converter Clutch Point Learning. Refer to Description.

   >>

   GO TO 10.

10. PERFORM SELECT LEARNING (DRIVE/REVERSE LEARNING)

    Note:

    Always perform Clutch Point Learning before Select Learning.

    Perform Select Learning. Refer to Work Procedure.

    >>

    GO TO 11.

11. ERASE CVT FLUID DEGRADATION LEVEL DATA

    With CONSULT

    1. Select “WORK SUPPORT” in “TRANSMISSION”.

    2. Select “CONFORM CVTF DETERIORTN”.

    3. Touch “Clear”.

    >>

    GO TO 12.

12. CHECK Nissan Sentra Vehicle CONDITION

    With CONSULT

    After completing the transaxle assembly replacement work, check if the Nissan Sentra vehicle is in normal condition.

    1. Clear any DTCs that may have set.

    2. Ignition switch OFF and wait for 10 seconds.

    3. Start the engine and confirm that no CVT system warning is displayed.

    4. Drive the Nissan Sentra vehicle in D position at 55 km/h (34 MPH) or more for 20 seconds. After that, confirm that DTC is not detected.

    >>

    WORK END

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