With CONSULT-II

Turn ignition switch OFF.
Disconnect EGR volume control valve harness connector.
Check resistance between EGR volume control valve terminal 2 and terminals 1, 3, terminal 5 and terminals 4, 6.
Resistance: 20 - 24 Ω [at 20°C (68°F)]

If NG, replace EGR volume control valve.

If OK, go to next step.
Remove EGR volume control valve.
Reconnect ECM harness connector and EGR volume control valve harness connector.
Turn ignition switch ON.

Fig 1: Checking Resistance Between EGR Volume Control Valve Terminal 2 And Terminals 1, 3, Terminal 5 And Terminals 4, 6
Courtesy of NISSAN MOTOR CO., U.S.A.
Perform "EGR VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-II.

Fig 2: Identifying Consult-II Active Test
Courtesy of NISSAN MOTOR CO., U.S.A.
Check that EGR volume control valve shaft moves smoothly forward and backward according to the valve opening steps.
If NG, replace EGR volume control valve.

Fig 3: Checking EGR Volume Control Valve Shaft Movement
Courtesy of NISSAN MOTOR CO., U.S.A.