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Home >> Nissan-Datsun >> 2005 >> Maxima SL >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0400: EGR Function >> DIAGNOSTIC TROUBLE CODES Confirmation Procedure >> With GST
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With GST

  1. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
  2. Check engine coolant temperature in MODE 1 with GST.

    Engine coolant temperature: 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 coolant temperature with a fan or means other than ambient air. Doing so may produce an inaccurate diagnostic result.

  3. Start engine and let it idle monitoring the engine coolant temperature value. When the engine coolant temperature reaches 70°C (158°F), immediately go to the next step.
  4. Maintain the following conditions for at least 1 minute.

    Engine speed: 1, 200 - 3, 600 RPM 

    Vehicle speed: More than 10 km/h (6 MPH) 

    Selector lever: Suitable position 

  5. Select Service $07 with GST.
  6. If 1st trip DTC is detected, go to DIAGNOSTIC PROCEDURE .
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