Diagnostic Procedure

1. Turn ignition switch OFF.
2. Disconnect VIAS control solenoid valve harness connector.
   Fig 1: Locating VIAS Control Solenoid Valve

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Turn ignition switch ON
4. Check voltage between terminal 1 and ground with CONSULT-II or tester.
   Fig 2: Checking Voltage Between Terminal And Ground

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

OK or NG 

1. OK: GO TO  3 .
2. NG: GO TO 2.

Check the following.

• Harness connectors M229, F66
• Fuse block (J/B) connector M19
• 15A fuse
• Harness continuity between fuse and VIAS control solenoid valve

OK or NG 

1. : Repair harness or connectors.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 27 and terminal 2. Refer to Wiring Diagram.

   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.

With CONSULT-II 

1. Reconnect harness connector disconnected.
2. Turn ignition switch ON.
3. Perform VIAS SOL VALVE in ACTIVE TEST mode.
4. Check air passage continuity and operation delay time under the following conditions.
   Fig 3: Checking VIAS Control Solenoid Valve

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 4: Displaying VIAS Control Solenoid Valve Continuity Based On Conditions

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

   Without CONSULT-II 

   Check air passage continuity and operation delay time under the following conditions.

   Fig 5: Checking VIAS Control Solenoid Valve

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 6: Displaying VIAS Control Solenoid Valve Continuity Based On Conditions

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

OK or NG 

1. OK: GO TO 5.
2. NG: Replace VIAS control solenoid valve.

Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT  .

1. : INSPECTION END.