2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK EGR VOLUME CONTROL VALVE POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect EGR volume control valve harness connector.
      Fig 1: Disconnecting EGR Volume Control Valve Harness Connector
      G02474498Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Turn ignition switch ON.
    4. Check voltage between EGR volume control valve terminals 2, 5 and ground with CONSULT-II or tester.
      Fig 2: Checking Voltage Between EGR Volume Control Valve Terminals 2, 5 & Ground
      G02474499Courtesy of NISSAN MOTOR CO., U.S.A.
      • Voltage: Battery voltage 

    OK or NG

    • OK: GO TO  3.
    • NG: GO TO 2.
  2. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors E5, F14
    • IPDM E/R harness connector E122
    • Harness for open or short between EGR volume control valve and IPDM E/R
    • Harness for open or short between EGR volume control valve and ECM
    • : Repair harness or connectors.
  3. CHECK EGR VOLUME CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check harness continuity between ECM terminals and EGR volume control valve terminals as follows.

      Refer to WIRING DIAGRAM .

      TERMINALS REFERENCE TABLE

      ECM terminal EGR volume control valve
      17 6
      18 3
      19 4
      20 1
      • Continuity should exist. 
    4. Also check harness for short to ground and short to power.

    OK or NG

    • OK: GO TO 4.
    • NG: Repair open circuit or short to ground or short to power in harness or connectors.
  4. CHECK EGR VOLUME CONTROL VALVE 

    Refer to "COMPONENT INSPECTION ".

    OK or NG

    • OK: GO TO 5.
    • NG: Replace EGR volume control valve.
  5. CHECK EGR TEMPERATURE SENSOR 

    Refer to "COMPONENT INSPECTION ".

    OK or NG

    • OK: GO TO 6.
    • NG: Replace EGR temperature sensor.
  6. CHECK INTERMITTENT INCIDENT 

    Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

    • : INSPECTION END 
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.