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Home >> Nissan-Datsun >> 2004 >> Altima SE, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control System - 3.5L >> DTC P0420, P0430: 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. Start engine and warm it up to the normal operating temperature.
  2. Turn ignition switch OFF and wait at least 10 seconds.
  3. Start engine and keep the engine speed at between 3, 500 to 4, 000 RPM for at least 1 minute under no load.
  4. Let engine idle for 1 minute.
  5. Open engine hood.
  6. Select "DTC & SRT CONFIRMATION" then "SRT WORK SUPPORT" mode with CONSULT-II.
  7. Rev engine up to 2, 000 to 3, 000 RPM and hold it for 3 consecutive minutes then release the accelerator pedal completely.

    If "INCMP" of "CATALYST" changed to "COMPLT", go to step  11.

  8. Wait 5 seconds at idle.
    Fig 1: CONSULT-II Diagnosis Function Display (1 Of 2)
    G02885546Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Rev engine up to 2, 000 to 3, 000 RPM and maintain it until "INCMP" of "CATALYST" changes to "CMPLT" (It will take approximately 5 minutes).

    If not "CMPLT", perform the following.

  10. Select "SELF-DIAG RESULTS" mode with CONSULT-II.
  11. Confirm that the 1st trip DTC is not detected.

    If the 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE ".

    Fig 2: CONSULT-II Diagnosis Function Display (2 Of 2)
    G02885547Courtesy of NISSAN MOTOR CO., U.S.A.