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Home >> Nissan-Datsun >> 2006 >> Sentra Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0137 To P0445 (QG18DE) >> DTC P0420 Three Way Catalyst Function >> DTC Confirmation Procedure >> With Consult-II

With Consult-II

TESTING CONDITION: 

Do not hold engine speed for more than the specified minutes below  .

  1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
  2. Start engine and warm it up to normal operating temperature.
  3. Turn ignition switch OFF and wait at least 10 seconds.
  4. Start engine and keep the engine speed between 3, 500 and 4, 000 rpm for at least 1 minute under no load.
  5. Let engine idle for 1 minute.
  6. Make sure that "COOLAN TEMP/S" indicates more than 70°C (158°F).
  7. Open engine hood.
    Fig 1: Consult-II DATA MONITOR Display Screen
    G04074727Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Select "DTC & SRT CONFIRMATION" then "SRT WORK SUPPORT" mode with CONSULT-II.
  9. Fig 2: CONSULT-II Display - SRT WORK SUPPORT
    G04191156Courtesy of NISSAN MOTOR CO., U.S.A.
  10. Rev engine up to 2, 500 to 3, 500 rpm and hold it for 3 consecutive minutes, then release the accelerator pedal completely.

    If "INCMP" of "CATALYST" changed to "CMPLT", GO TO step  12.

  11. Wait 5 seconds at idle.
  12. Rev engine up to 2, 000 to 3, 000 rpm and maintain it until "IMCMP" of "CATALYST" changes to "CMPLT" (it will take approximately 5 minutes).

    If not "CMPLT", stop engine and cool it down to less than 70°C (158°F) and then retest step 1.

    Fig 3: CONSULT-II Display - CMPLT
    G04191157Courtesy of NISSAN MOTOR CO., U.S.A.
  13. Select "SELF-DIAG RESULTS" mode with CONSULT-II.
  14. Confirm that the 1st trip DTC is not detected.

    If the 1st trip DTC is detected, GO TO "DIAGNOSTIC PROCEDURE ".

    Fig 4: CONSULT-II Display - SELF-DIAG RESULTS
    G04191158Courtesy of NISSAN MOTOR CO., U.S.A.