DTC    P0011    Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1)

DTC    P0012    Camshaft Position "A" - Timing Over-Retarded (Bank 1)


DESCRIPTION

HINT:
If DTC P0011 or P0012 is present, check the VVT (Variable Valve Timing) system.
The VVT system includes the ECM, Oil Control Valve (OCV) and VVT controller. The ECM sends a target duty-cycle control signal to the OCV. This control signal regulates the oil pressure supplied to the VVT controller. Camshaft timing control is performed according to engine operating conditions such as the intake air volume, throttle valve position and engine coolant temperature. The ECM controls the OCV, based on the signals transmitted by several sensors. The VVT controller regulates the intake camshaft angle using oil pressure through the OCV. As a result, the relative positions of the camshaft and crankshaft are optimized, the engine torque and fuel economy improve, and the exhaust emissions decrease under overall driving conditions. The ECM detects the actual intake valve timing using signals from the camshaft and crankshaft position sensors, and performs feedback control. This is how the target intake valve timing is verified by the ECM.

A209140E24


DTC No.
DTC Detection Condition
Trouble Area
P0011
Intake valve timing is stuck at a certain value when in the advance range
(1 trip detection logic)
  1. Valve timing
  2. OCV
  3. OCV filter
  4. Camshaft timing gear assembly
  5. ECM
P0012
Intake valve timing is stuck at a certain value when in the retard range
(2 trip detection logic)
  1. Valve timing
  2. OCV
  3. OCV filter
  4. Camshaft timing gear assembly
  5. ECM

CONFIRMATION DRIVING PATTERN


A232050E03

  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch to ON and turn the Techstream on.
  3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
  4. Turn the ignition switch off and wait for at least 30 seconds.
  5. Turn the ignition switch to ON and turn the Techstream on [A].
  6. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [B].
  7. Drive the vehicle at approximately 60 km/h (38 mph) for 10 minutes or more [C].

    CAUTION:
    When performing the confirmation driving pattern, obey all speed limits and traffic laws.
  8. Idle the engine for 3 minutes or more [D].
  9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [E].
  10. Read pending DTCs.

    HINT:
    1. If a pending DTC is output, the system is malfunctioning.
    2. If a pending DTC is not output, perform the following procedure.
  11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  12. Input the DTC: P0011 or P0012.
  13. Check the DTC judgment result.

    Techstream Display
    		Description
    NORMAL
    1. DTC judgment completed
    2. System normal
    ABNORMAL
    1. DTC judgment completed
    2. System abnormal
    INCOMPLETE
    1. DTC judgment not completed
    2. Perform driving pattern after confirming DTC enabling conditions
    N/A
    1. Unable to perform DTC judgment
    2. Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    HINT:
    1. If the judgment result shows NORMAL, the system is normal.
    2. If the judgment result shows ABNORMAL, the system has a malfunction.
    3. If the judgment result shows INCOMPLETE or N/A, perform steps [F] through [H].
  14. Repeat the pattern of accelerating the vehicle from rest to approximately 60 km/h (38 mph) and then decelerating the vehicle 10 to 15 times [F].

    CAUTION:
    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    HINT:
    Depress the accelerator pedal by a large amount.
  15. Idle the engine for 3 minutes or more [G].
  16. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [H].
  17. Read pending DTCs.

    HINT:
    1. If a pending DTC is output, the system is malfunctioning.
    2. If a pending DTC is not output, perform the following procedure.
  18. Check the DTC judgment result again.

    HINT:
    1. If the judgment result shows NORMAL, the system is normal.
    2. If the judgment result shows ABNORMAL, the system has a malfunction.

WIRING DIAGRAM

Refer to DTC P0010 (Click here).

INSPECTION PROCEDURE

NOTICE:
DTC P0011 or P0012 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. Foreign objects are filtered out by the oil filter.

HINT:
Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011 OR P0012)

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

  1. Read DTCs.

    Result 
    Result
    		Proceed to
    P0011 or P0012 is output
    		A
    DTC P0011 or P0012 and other DTCs are output
    		B

    HINT:
    If any DTCs other than P0011 or P0012 are output, troubleshoot those DTCs first.


B
GO TO DTC CHART (Click here)
A


2.PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR)

  1. Connect the Techstream to the DLC3.

  1. Start the engine and turn the Techstream on.

  1. Turn the Techstream on.

  1. Turn the A/C switch on.

  1. Warm up the engine.

  1. On the Techstream, enter the following menu: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1).

  1. Check the engine speed while operating the Oil Control Valve (OCV) using the Techstream.

    OK:

    Techstream Operation
    		Specified Condition
    0%
    		Normal engine speed
    100%
    		Engine idles roughly or stalls

    HINT:
    Refer to "Data List / Active Test" [VVT OCV Duty #1 and VVT Change Angle #1] (Click here).


NG
Go to step 4
OK


3.CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012)

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Clear DTCs (Click here).

  1. Turn the ignition switch off and wait for at least 30 seconds.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Start the engine and warm it up.

  1. Drive the vehicle in accordance with the driving pattern described in the Confirmation driving Pattern.

  1. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.

  1. Read pending DTCs.

    Result 
    Result
    		Proceed to
    DTC is not output
    		A
    DTC P0011 or P0012 is output
    		B

    HINT:
    DTC P0011 or P0012 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. These foreign objects may then be captured by the oil filter.


B
Go to step 4
A

CHECK FOR INTERMITTENT PROBLEMS 

4.CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN OR JUMPED TEETH)


    A175434E02

  1. Remove the cylinder head cover.

  1. Turn the crankshaft pulley, and align its groove with the timing mark "0" on the timing chain cover.

  1. Check that the timing marks on the camshaft timing sprocket and camshaft timing gear are facing upward as shown in the illustration.

    1. If not, turn the crankshaft 1 revolution (360°), then align the marks as above.

    OK:
    Timing marks on camshaft timing gears are aligned as shown in the illustration.
    Text in Illustration 
    *a
    		Timing Mark

  1. Reinstall the cylinder head cover.



NG
ADJUST VALVE TIMING (Click here)
OK


5.INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV)

  1. Inspect the OCV (Click here).



NG
REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (Click here)
OK


6.INSPECT OIL CONTROL VALVE FILTER
A050664E08

  1. Remove the OCV filter.

  1. Check that the filter is not clogged.

    OK:
    Filter is not clogged.
    Text in Illustration 
    *1
    		OCV Filter

  1. Reinstall the OCV filter.



NG
CLEAN OR REPLACE OIL CONTROL VALVE FILTER
OK


7.REPLACE CAMSHAFT TIMING GEAR ASSEMBLY

  1. Replace the camshaft timing gear assembly (Click here).


NEXT


8.CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012)

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Clear DTCs (Click here).

  1. Turn the ignition switch off and wait for at least 30 seconds.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Start the engine and warm it up.

  1. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

  1. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.

  1. Read pending DTCs.

    Result 
    Result
    		Proceed to
    DTC is not output
    		A
    DTC P0011 or P0012 is output
    		B

    HINT:
    DTC P0011 or P0012 is stored when foreign objects in the engine oil are caught in some parts of the system. These codes will remain stored even if the system returns to normal after a short time. These foreign objects are then captured by the oil filter, thus eliminating the source of the problem.


B
REPLACE ECM (Click here)
A

END