2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

With CONSULT-II

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
  2. Check "COOLAN TEMP/S" in "DATA MONITOR" mode with CONSULT-II.

    Confirm "COOLAN TEMP/S" value is within the range listed below.

    1. COOLAN TEMP/S: Less than 40°C (104°F) 

    If the value is out of range, park the vehicle in a cool place and allow the engine temperature to stabilize. Do not attempt to lower the engine coolant temperature with a fan or means other than ambient air. Doing so may produce an inaccurate diagnostic result.

    Fig 1: Displaying Data Monitor Screen
    G00775722Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Start engine and let it idle monitoring "COOLAN TEMP/S" value. When the "COOLAN TEMP/S" value reaches 70°C (158°F), immediately go to the next step.
  4. Select "EGR SYSTEM P0400" of "EGR SYSTEM" in "DTC WORK SUPPORT" mode with CONSULT-II.
  5. Touch "START".
  6. Accelerate vehicle to a speed of 40 km/h (25 MPH) once and then stop vehicle with engine running.

    If "COMPLETED" appears on CONSULT-II screen, go to step 8.

    If "COMPLETED" does not appear on CONSULT-II screen, go to the following step.

  7. When the following conditions are met, "TESTING" will be displayed on the CONSULT-II screen. Maintain the conditions until "TESTING" changes to "COMPLETED". (It will take approximately 30 seconds or more.)
    Fig 2: Checking Reference Chart
    G00775723Courtesy of NISSAN MOTOR CO., U.S.A.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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