Overall Function Check

Use this procedure to check the overall EGR function. During this check, a 1st trip DTC might not be confirmed.

WITH GST 

1. Start engine and warm it up to normal operating temperature.
2. Check the EGR valve lifting when revving engine from 2, 000 to 3, 000 RPM quickly under no load using the following methods.
   Fig 1: Checking EGR Valve

   Courtesy 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 engine 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 And Engine Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
5. Disconnect EGR temperature sensor harness connector.
   Fig 3: Locating EGR Temperature Sensor Harness Connector

   Courtesy of NISSAN MOTOR CO., U.S.A.
6. Check harness continuity between EGR temperature sensor harness connector terminal 2 and engine ground.

   Continuity should exist. 

7. Perform "COMPONENT INSPECTION ".
   Fig 4: Checking Harness Continuity Between EGR Temperature Sensor Harness Connector Terminal 2 And Engine Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.