P0021
P0011, P0021 IVT CONTROL
DTC Logic
DTC DETECTION LOGIC
NOTE:
If DTC P0011 or P0021 is displayed with DTC P0075 or P0081, first perform the trouble diagnosis for
DTC P0075, P0081. Refer to "DTC Logic" P0075.
DTC CONFIRMATION PROCEDURE
1. PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.
1.Turn ignition switch OFF and wait at least 10 seconds.
2.Turn ignition switch ON.
3.Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10 V and 16 V at idle.
- GO TO 2.
2. PERFORM DTC CONFIRMATION PROCEDURE-I
With CONSULT
1.Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT.
2.Start engine and warm it up to the normal operating temperature.
3.Maintain the following conditions for at least 6 consecutive seconds. Hold the accelerator pedal as steady as possible.
CAUTION:
Always drive at a safe speed.
4.Stop vehicle with engine running and let engine idle for 10 seconds.
5.Check 1st trip DTC.
With GST
Follow the procedure "With CONSULT" above.
Is 1st trip DTC detected?
YES- Proceed to "Diagnosis Procedure"
NO- GO TO 3.
3. PERFORM DTC CONFIRMATION PROCEDURE-II
With CONSULT
Revision: March 20122013 Infiniti JX
1.Maintain the following conditions for at least 20 consecutive seconds.
CAUTION:
Always drive at a safe speed.
2.Check 1st trip DTC.
With GST
Follow the procedure "With CONSULT" above.
Is 1st trip DTC detected?
YES- Proceed to "Diagnosis Procedure"
NO- INSPECTION END
Diagnosis Procedure
1. CHECK OIL PRESSURE WARNING LAMP
1.Start engine.
2.Check oil pressure warning lamp and confirm it is not illuminated.
Is oil pressure warming lamp illuminated?
YES- Check the engine oil level. Refer to "Inspection" Procedures.
NO- GO TO 2.
2. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Check intake valve timing control solenoid valve. Refer to "Component Inspection" .
Is the inspection result normal?
YES- GO TO 3.
NO- Replace malfunctioning intake valve timing control solenoid valve. Refer to "Exploded View" Service and Repair.
3. CHECK CRANKSHAFT POSITION SENSOR (POS)
Check crankshaft position sensor (POS). Refer to "Component Inspection" P0335.
Is the inspection result normal?
YES- GO TO 4.
NO- Replace crankshaft position sensor (POS). Refer to "Exploded View" Exploded View.
4. CHECK CAMSHAFT POSITION SENSOR (PHASE)
Check camshaft position sensor (PHASE). Refer to "Component Inspection" P0340.
Is the inspection result normal?
YES- GO TO 5.
NO- Replace malfunctioning camshaft position sensor (PHASE). Refer to "Exploded View" Exploded View.
5. CHECK CAMSHAFT (INTAKE)
Check the following.
Revision: March 20122013 Infiniti JX
- Accumulation of debris on the signal plate of camshaft rear end
- Chipping signal plate of camshaft rear end
Is the inspection result normal?
YES- GO TO 6.
NO- Remove debris and clean the signal plate of camshaft rear end or replace camshaft. Refer to "Exploded View" Exploded View.
6. CHECK TIMING CHAIN INSTALLATION
Check service records for any recent repairs that may cause timing chain misalignment.
Are there any service records that may cause timing chain misalignment?
YES- Check timing chain installation. Refer to "Removal and Installation" Removal and Installation.
NO- GO TO 7.
7. CHECK LUBRICATION CIRCUIT
Check lubrication circuit. Refer to "Inspection After Removal" Inspection After Removal.
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Clean lubrication line.
Component Inspection
1. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-I
1.Turn ignition switch OFF.
2.Disconnect intake valve timing control solenoid valve harness connector.
3.Check resistance between intake valve timing control solenoid valve terminals as per the following.
Is the inspection result normal?
YES- GO TO 2.
NO- Replace malfunctioning intake valve timing control solenoid valve. Refer to "Exploded View" Service and Repair.
2. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-II
1.Remove intake valve timing control solenoid valve. Refer to "Exploded View" Service and Repair.
2.Provide 12 V DC between intake valve timing control solenoid valve terminals 1 and 2, and then interrupt it. Check that the plunger moves as shown in the figure.
CAUTION:
Never apply 12 V DC continuously for 5 seconds or more.
Doing so may result in damage to the coil in intake valve timing control solenoid valve.
NOTE:
Always replace O-ring when intake valve timing control solenoid valve is removed.
Is the inspection result normal?
YES- INSPECTION END
Revision: March 20122013 Infiniti JX
NO- Replace malfunctioning intake valve timing control solenoid valve. Refer to "Exploded View" Service and Repair.
Revision: March 20122013 Infiniti JX