The CVVT (Continuously Variable Valve Timing) system is installed to the chain sprocket of the exhaust camshaft. There is no variation in valve timing of the exhaust cam because the exhaust camshaft is driven by the timing belt. The timing of the intake cam is varied by the relative operation the CVVT vane to the housing. This system helps the engine decrease exhaust gases and increase engine power and fuel economy by changing the valve open/close timing of the intake camshaft.
The deviation of the camshaft position from the target point is evaluated during stable driving condition. The PCM accumulats this deviation for a certain period and sets DTC P0011 when the accumulated deviation is too high. The target camshaft position is predetermineded value depending on engine speed and throttle angle in the PCM.
Item | Detecting Condition | Possible Cause |
DTC Strategy | ● Monitor deviation between camshaft position setpoint and actual value | ● Oil leakage ● Faulty Oil pump ● Faulty Intake valve control solenoid |
Enable Conditions | ● No relevant failure ● 11V ＜ Battery voltage ＜ 16V ● CVVT control : enabled ● Holding position adaptation not active ● Camshaft setpoint moved more than 5 times for this Driving Cycle ● Camshaft target position is stable with less than 1.125°CRK moving ● 600rpm ＜ Engine speed ＜ 5000rpm ● 20℃(68℉) ＜ Engine oil temperature ＜ 100℃(212℉) | |
Threshold Value | ● Integral of Camshaft position setpoint - Camshaft position actual value ＞ 150°CRK/sec. | |
Diagnostic Time | ● Approx. 38~300 seconds depending on CAM deviation | |
Fail-Safe | ● CVVT control is disabled |
Intake valve control solenoid | Normal Parameter |
Insulation Resistance (Ω) | above 50 ㏁ |
Temp.(℃) | Temp.(℉) | Resistance(Ω) | Temp.(℃) | Temp.(℉) | Resistance(Ω) |
0 | 32 | 6.2 ~ 7.4 | 60 | 140 | 8.0 ~ 9.2 |
10 | 50 | 6.5 ~ 7.7 | 70 | 158 | 8.3 ~ 9.5 |
20 | 68 | 6.8 ~ 8.0 | 80 | 176 | 8.6 ~ 9.8 |
30 | 86 | 7.1 ~ 8.3 | 90 | 194 | 8.9 ~ 10.1 |
40 | 104 | 7.4 ~ 8.6 | 100 | 212 | 9.0 ~ 10.4 |
50 | 122 | 7.7 ~ 8.9 |
Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure
▶ Check for poor connection between PCM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "Verification of Vehicle Repair" procedure
Ignition "OFF".
Remove the intake valve control solenoid from the engine.
Visually check the Spool Column of intake valve control solenoid for contamination.
Connect 12V and a ground to 2 and 1 of the solenoid(Component side). Verify that spool column move to left as shown in the figure.
Disconnect 12V and verify that spool column move to original condition.
Has a problem been found?
▶ Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure
▶ Go to next step as below
Ignition " OFF".
Disconnect intake valve control solenoid connector.
Measure resistance between terminals 1 and 2 of the intake valve control solenoid connector.(Component side)
Temp.(℃) | Temp.(℉) | Resistance(Ω) | Temp.(℃) | Temp.(℉) | Resistance(Ω) |
0 | 32 | 6.2 ~ 7.4 | 60 | 140 | 8.0 ~ 9.2 |
10 | 50 | 6.5 ~ 7.7 | 70 | 158 | 8.3 ~ 9.5 |
20 | 68 | 6.8 ~ 8.0 | 80 | 176 | 8.6 ~ 9.8 |
30 | 86 | 7.1 ~ 8.3 | 90 | 194 | 8.9 ~ 10.1 |
40 | 104 | 7.4 ~ 8.6 | 100 | 212 | 9.2 ~ 10.4 |
50 | 122 | 7.7 ~ 8.9 |
Is resistance within the specification?
▶ Go to next step as below
▶ Replace the intake valve control solenoid and go to "Verification of Vehicle Repair" procedure
Check the following items
Intake valve control solenoid filter for sticking or contamination
Engine oil and it's level
Engine oil filter
Is there any problem?
▶ Repair or replace the intake valve control solenoid and go to "Verification of Vehicle Repair" procedure
▶ Go to "Terminal and Connector Inspection" procedure
After a repair, it is essential to verify that the fault has been corrected.
Connect scan tool and select "Diagnostic Trouble Codes(DTCs)" mode
Press F4(DTAL) and confirm that "DTC Readiness Flag" indicates "Complete". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions
Read "DTC Status" parameter
Is parameter displayed "History(Not Present) fault"?
▶ System performing to specification at this time. Clear the DTC
▶ Go to the applicable troubleshooting procedure.
