Diagnostic Procedure

1. Turn ignition switch OFF.
2. Disconnect EGR volume control valve harness connector.
3. Turn ignition switch ON.
   Fig 1: Checking EGR Volume Control Valve Power Supply Circuit

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check voltage between EGR volume control valve terminals 2, 5 and ground with CONSULT-II or tester.
   1. Voltage: Battery voltage 

OK or NG 

1. OK: GO TO  3 .
2. NG: GO TO 2.

Fig 2: Checking Voltage Between EGR Terminals 2, 5 And Ground

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

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
  1. Repair harness or connectors.

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  .

   Fig 3: ECM Terminals And EGR Volume Control Valve Terminals Chart

   Courtesy of NISSAN MOTOR CO., U.S.A.
   1. Continuity should exist. 
4. Also check harness for short to ground and short to power.

OK or NG 

1. OK: GO TO 4.
2. NG: Repair open circuit or short to ground or short to power in harness or connectors.

Refer to COMPONENT INSPECTION  .

OK or NG 

1. OK: GO TO 5.
2. NG: Replace EGR volume control valve.

Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT  .

1. INSPECTION END