2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK GROUND CONNECTIONS 
    1. Turn ignition switch OFF.
    2. Loosen and retighten three ground screws on the body. Refer to "GROUND INSPECTION ".
      Fig 1: Loosen & Retighten Three Ground Screws On The Body
      G02401666Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    • OK: GO TO 2.
    • NG: Repair or replace ground connections.
  2. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER 
    1. Disconnect EVAP control system pressure sensor harness connector.
      Fig 2: Disconnecting EVAP Control System Pressure Sensor Harness Connector
      G02401667Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Check sensor harness connector for water.
      • Water should not exist. 

    OK or NG

    • OK: GO TO 3.
    • NG: Repair or replace harness connector.
  3. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR 

    Refer to "COMPONENT INSPECTION ".

    OK or NG

    • OK: GO TO 4.
    • NG: Replace EVAP control system pressure sensor.
  4. CHECK INTERMITTENT INCIDENT 

    Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

    Refer to "WIRING DIAGRAM ".

    • : INSPECTION END 
Factory Service Tools

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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.