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. Disconnect EGRC solenoid valve harness connector. (The 1st trip DTC for EGRC solenoid valve will be displayed, however, ignore it.)
   Fig 1: Disconnecting EGRC Solenoid Valve Harness Connector

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check the EGR valve lifting when revving engine from 2,000 RPM to 4,000 RPM quickly under no load using the following methods.
   Fig 2: Checking EGR Valve Lifting

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

   EGR valve should lift up and down without sticking. 

   If NG, go to DIAGNOSTIC PROCEDURE .

   If OK, go to the next step.

4. 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.

5. Turn ignition switch OFF.
   Fig 3: Checking Voltage Between ECM Terminal And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
6. Check harness continuity between EGR temperature sensor harness connector terminal 2 and ECM terminal 43 (ECM ground).

   Continuity should exist. 

7. Check "EGR TEMPERATURE SENSOR". Refer to COMPONENT INSPECTION .

Fig 4: Checking EGR Temperature Sensor

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