Variable Induction System: Testing and Inspection

VARIABLE INDUCTION AIR SYSTEM

Component Function Check


1. CHECK OVERALL FUNCTION-I

With CONSULT
1.Start engine and warm it up to the normal operating temperature.
2.Perform "VIAS S/V-1" in "ACTIVE TEST" mode with CONSULT.
3.Turn VIAS control solenoid valve 1 "ON" and "OFF", and check that power valve actuator 1 rod moves.










Without CONSULT
1.Start engine and warm it up to the normal operating temperature.
2.Rev engine quickly up to approximately 5,000 rpm.
3.Check that power valve actuator 1 rod moves.










Is the inspection result normal?
YES- GO TO 2.
NO-"Diagnosis Procedure" .

2. CHECK OVERALL FUNCTION-II

With CONSULT
1.Perform "VIAS S/V-2" in "ACTIVE TEST" mode with CONSULT.
2.Turn VIAS control solenoid valve 2 "ON" and "OFF", and check that power valve actuator 2 rod moves.
Revision: March 20122013 Infiniti JX










Without CONSULT
1.When revving engine up to 5,000 rpm quickly.
2.Rev engine quickly up to approximately 5,000 rpm.
3.Check that power valve actuator 2 rod moves.










Is the inspection result normal?
YES- INSPECTION END
NO-"Diagnosis Procedure" .


Diagnosis Procedure


1. INSPECTION START

Confirm the malfunctioning system (power valve 1 or power valve 2). Refer to "Component Function Check" .
Which system is related to the incident?
Power valve 1-GO TO 2.
Power valve 2-GO TO 6.

2. CHECK VACUUM EXISTENCE-I

With CONSULT
1.Stop engine and disconnect vacuum hose connected to power valve actuator 1.
2.Start engine and let it idle.
3.Perform "VIAS S/V-1" in "ACTIVE TEST" mode with CONSULT.
4.Turn VIAS control solenoid valve 1 ON and OFF, and check vacuum existence under the following conditions.
Revision: March 20122013 Infiniti JX





Without CONSULT
1.Stop engine and disconnect vacuum hose connected to power valve actuator 1.
2.Disconnect VIAS control solenoid valve 1 harness connector.
3.Start engine.
4.Rev engine quickly up to approximately 5,000 rpm.
5.Check vacuum existence under the following conditions.





Is the inspection result normal?
YES- Repair or replace power valve actuator 1. Refer to "ENGINE CONTROL SYSTEM : Component Parts Location" Engine Control System.
NO- GO TO 3.

3. CHECK VACUUM TANK

1.Stop engine and disconnect vacuum hose connected to intake manifold collector.
2.Start engine and let it idle.
3.Check vacuum existence from intake manifold collector.
Does vacuum existence from the intake manifold collector?
YES- GO TO 4.
NO- Replace intake manifold collector. Refer to "Exploded View" Exploded View.

4. CHECK VACUUM HOSE

1.Stop engine.





2.Check vacuum hose for crack, clogging, improper connection or disconnection. Refer to "VARIABLE INDUCTION AIR SYSTEM : System Description" Description and Operation.
Is the inspection result normal?
YES- GO TO 5.
NO- Repair hoses or tubes.

5. CHECK VIAS CONTROL SOLENOID VALVE 1

Check VIAS control solenoid valve 1. Refer to "Component Inspection" P1800.
Is the inspection result normal?
YES- GO TO 8.
NO- Replace VIAS control solenoid valve 1. Refer to "ENGINE CONTROL SYSTEM : Component Parts Location" Engine Control System.

6. CHECK VACUUM EXISTENCE-II

With CONSULT
1.Stop engine and disconnect vacuum hose connected to power valve actuator 2.
2.Start engine and let it idle.
3.Perform "VIAS S/V-2" in "ACTIVE TEST" mode with CONSULT.
4.Turn VIAS control solenoid valve 2 ON and OFF, and check vacuum existence under the following conditions.
Revision: March 20122013 Infiniti JX





Without CONSULT
1.Stop engine and disconnect vacuum hose connected to power valve actuator 2.
2.Disconnect VIAS control solenoid valve 1 harness connector.
3.Start engine.
4.Rev engine quickly up to approximately 5,000 rpm.
5.Check vacuum existence under the following conditions.





Is the inspection result normal?
YES- Repair or replace power valve actuator 2. Refer to "ENGINE CONTROL SYSTEM : Component Parts Location" Engine Control System.
NO- GO TO 7.

7. CHECK VACUUM HOSE

1.Stop engine.





2.Check vacuum hose for crack, clogging, improper connection or disconnection. Refer to "VARIABLE INDUCTION AIR SYSTEM : System Description" Description and Operation.
Is the inspection result normal?
YES- GO TO 8.
NO- Repair hoses or tubes.

8. CHECK VIAS CONTROL SOLENOID VALVE 2

Check VIAS control solenoid valve 2. Refer to "Component Inspection" P1801.
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Replace VIAS control solenoid valve 2. Refer to "ENGINE CONTROL SYSTEM : Component Parts Location" Engine Control System.
Revision: March 20122013 Infiniti JX