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Home >> Nissan-Datsun >> 2019 >> Sentra SL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Control System (Basic Inspection) (1.6L)) >> Basic Inspection >> Additional Service When Replacing ECM >> Work Procedure
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Work Procedure

WARNING: This page is about a different variant/trim than selected.
  1. SAVE ECM DATA 

    SYMBOL With CONSULT

    1. Turn ignition switch OFF.
    2. Reconnect all harness connectors disconnected.
    3. Turn ignition switch ON.
    4. Select "SAVING DATA FOR REPLC CPU" in "WORK SUPPORT" mode of "ENGINE" using CONSULT.
    5. Follow the instruction of CONSULT display.
    NOTE: Necessary data in ECM is copied and saved to CONSULT.

    GO TO 2 .

  2. CHECK ECM PART NUMBER 

    Check ECM part number to see whether it is blank ECM or not.

    NOTE:
    • Part number of blank ECM is 23703 - x x x x x.
    • Check the part number when ordering ECM or with the one included in the label on the container box.

    Is the ECM a blank ECM?

    YES

    GO TO 3 .

    NO

    GO TO 5 .

  3. SAVE ECM PART NUMBER 

    Read out the part number from the old ECM and save the number, following the programming instructions. Refer to "CONSULT Operation Information".

    NOTE:
    • The ECM part number is saved in CONSULT.
    • Even when ECM part number is not saved in CONSULT, go to 4.

    GO TO 4 .

  4. PERFORM ECM PROGRAMMING 

    After replacing ECM, perform the ECM programming. Refer to "CONSULT Operation Information".

    NOTE:
    • Refer to Removal and Installation for replacement of ECM.
    • 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 6 .

  5. REPLACE ECM 

    Replace ECM. Refer to Removal and Installation .

    GO TO 6 .

  6. WRITE ECM DATA 

    SYMBOL With CONSULT

    1. Select "WRITING DATA FOR REPLC CPU" in "WORK SUPPORT" mode of "ENGINE" using CONSULT.
    2. Follow the instruction of CONSULT display.
    NOTE: The data saved by "SAVE DATA FOR CPU REPLC" is written to ECM.

    GO TO 7 .

  7. PERFORM VIN REGISTRATION 

    Refer to Description .

    GO TO 8 .

  8. PERFORM INITIALIZATION OF NATS SYSTEM AND REGISTRATION OF ALL NATS IGNITION KEY IDS 

    Refer to Description .

    GO TO 9 .

  9. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING 

    Refer to Description .

    GO TO 10 .

  10. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING 

    Refer to Description .

    GO TO 11 .

  11. PERFORM WASTEGATE VALVE CLOSED POSITION LEARNING 

    Perform wastegate valve closed position learning. Refer to Description .

    GO TO 12 .

  12. PERFORM IDLE AIR VOLUME LEARNING 

    Refer to Description .

    GO TO 13 .

  13. PERFORM AIR FUEL RATIO INITIAL LEARNING 

    Perform air fuel ratio initial learning. Refer to Description .

    GO TO 14 .

  14. PERFORM G SENSOR CALIBRATION 

    Refer to Description .

    GO TO 15 .

  15. PERFORM VALVE TIMING OFFSET DATA CLEAR 

    Perform valve timing offset data clear. Refer to Description .

    GO TO 16 .

  16. PERFORM VALVE TIMING OFFSET DATA WRITING 

    Perform valve timing offset data writing. Refer to Description .

    END

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