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Home >> Nissan-Datsun >> 2004 >> Frontier Desert Runner SE >> Repair and Diagnosis >> Engine Performance >> Engine Control System - VG33E >> DTC P0420, P0430: Three Way Catalyst Function >> DTC Confirmation Procedure
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DTC Confirmation Procedure

NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

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 5 seconds.
  3. Start engine and keep the engine speed between 3, 500 and 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  10.

  8. Wait 5 seconds at idle.
    Fig 1: Reading "CATALYST" In "SRT WORK SUPPORT" Mode
    G00741907Courtesy 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.

    Fig 2: Reading "CATALYST" In "SRT WORK SUPPORT" Mode
    G00741908Courtesy of NISSAN MOTOR CO., U.S.A.
  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 3: Reading "DTC RESULTS" In "SELF DIAG RESULTS" Mode
    G00741909Courtesy of NISSAN MOTOR CO., U.S.A.