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 P0075.

DTC Detection Logic:

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure 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 more than 11 V at idle.
- GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-I
With CONSULT-III
1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-III.
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.





4. Let engine idle for 25 seconds.
5. Check 1st trip DTC.
With GST
Follow the procedure "With CONSULT-III" above.
Is 1st trip DTC detected?
YES - Go to P0011
NO - GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-II
With CONSULT-III
1. Select "DATA MONITOR" mode with CONSULT-III.
2. Maintain the following conditions for at least 20 consecutive seconds.






CAUTION:
Always drive at a safe speed.
3. Check 1st trip DTC.
With GST
Follow the procedure "With CONSULT-III" above.
Is 1st trip DTC detected?
YES - Go to P0011.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK OIL PRESSURE WARNING LAMP
1. Start engine.





2. Check that oil pressure warning lamp is not illuminated.
Is oil pressure warning lamp illuminated?
YES - Go to Testing and Inspection.
NO - GO TO 2.
2.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to P0011.
Is the inspection result normal?
YES - GO TO 3.
NO - Replace malfunctioning intake valve timing control solenoid valve.
3.CHECK CRANKSHAFT POSITION SENSOR
Refer to P0335.
Is the inspection result normal?
YES - GO TO 4.
NO - Replace crankshaft position sensor.
4.CHECK CAMSHAFT POSITION SENSOR
Refer to P0340.
Is the inspection result normal?
YES - GO TO 5.
NO - Replace malfunctioning camshaft position sensor.
5.CHECK CAMSHAFT (INTAKE)
Check the following.





- Accumulation of debris on the signal plate of camshaft front end
- Chipping signal plate of camshaft front end
Is the inspection result normal?
YES - GO TO 6.
NO - Remove debris and clean the signal plate of camshaft front end or replace camshaft.
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 Disassembly and Assembly.
NO - GO TO 7.
7.CHECK LUBRICATION CIRCUIT
Perform "Inspection of Camshaft Sprocket (INT) Oil Groove". Refer to Inspection.
Is the inspection result normal?
YES - GO TO 8.
NO - Clean lubrication line.
8.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
- INSPECTION END




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.
2.CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-II
1. Remove intake valve timing control solenoid valve.





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
NO - Replace malfunctioning intake valve timing control solenoid valve.