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Home › Nissan-Datsun › 2004 › Xterra SE, 4WD › Repair and Diagnosis › Engine Performance › System › Engine Control System - VG33E › DTC P0400: EGR Function › Overall Function Check › With GST

With GST

  1. Start engine and warm it up to normal operating temperature.
  2. Check the EGR valve lifting when revving engine from 2, 00 to 3, 00 RPM quickly under no load using the following methods.
    Fig 1: Checking EGR Valve
    G00869777Courtesy of NISSAN MOTOR CO., U.S.A.

    EGR valve should lift up and down without sticking. 

    If NG, go to Diagnostic Procedure .

  3. Check voltage between ECM terminal 63 (EGR temperature sensor signal) and ground at idle speed.

    Less than 4.5V should exist. 

    If NG, go to next step.

  4. Turn ignition switch OFF.
    Fig 2: Checking Voltage Between ECM Terminal 63
    G00869778Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Disconnect EGR temperature sensor harness connector.
    Fig 3: Disconnecting EGR Temperature Sensor Harness Connector
    G00869779Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Check harness continuity between EGR temperature sensor harness connector terminal 2 and ground.
    1. Continuity should exist. 
  7. Perform Component Inspection .
Fig 4: Checking Harness Continuity Between EGR Temperature Sensor Harness Connector Terminal 2
G00869780Courtesy of NISSAN MOTOR CO., U.S.A.
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