DTC    P0011    Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1)
DTC    P0012    Camshaft Position "A" - Timing Over-Retarded (Bank 1)
DTC    P0021    Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 2)
DTC    P0022    Camshaft Position "A" - Timing Over-Retarded (Bank 2)

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DESCRIPTION

MONITOR DESCRIPTION

1. The ECM optimizes the intake valve timing using the Variable Valve Timing (VVT) system to control the intake camshaft. The VVT system includes the ECM, the camshaft timing oil control valve assembly (for intake camshaft) and the VVT controller (camshaft timing gear assembly). The ECM sends a target duty-cycle control signal to the camshaft timing oil control valve assembly (for intake camshaft). This control signal regulates the oil pressure supplied to the VVT controller. The VVT controller can advance or retard the intake camshaft.
   
2. If the difference between the target and actual intake valve timing is large, and changes in the actual intake valve timing are small, the ECM interprets this as a VVT controller stuck malfunction and stores a DTC.
   

1. Example:
   
1. A DTC is stored when the following conditions "A" and "B" are met (DTCs P0011 and P0021):
   
1. (a) It takes 5 seconds or more to change the valve timing by 5°CA (Condition "A").
   
2. (b) After the above condition "A" is met, the camshaft timing oil control valve assembly is forcibly activated 14 times or more (when the vehicle is idling, this takes approximately 100 seconds) (Condition "B").
   
1. A DTC is stored when the following conditions "A" and "B" are met (DTCs P0012 and P0022):
   
1. (a) It takes 5 seconds or more to change the valve timing by 5°CA (Condition "A").
   
2. (b) After the above condition "A" is met, the camshaft timing oil control valve assembly is forcibly activated 63 times or more (when the vehicle is idling, this takes approximately 100 seconds) (Condition "B").
   
2. DTCs P0011 and P0021 (Advanced Cam Timing) are subject to 1 trip detection logic.
   
3. DTCs P0012 and P0022 (Retarded Cam Timing) are subject to 2 trip detection logic.
   
4. These DTCs indicate that the VVT controller cannot operate properly due to a camshaft timing oil control valve assembly (for intake camshaft) malfunction or the presence of foreign objects in the camshaft timing oil control valve assembly (for intake camshaft).
   

MONITOR STRATEGY

CONFIRMATION DRIVING PATTERN

1. Connect the intelligent tester to the DLC3.
   
2. Turn the engine switch on (IG) and turn the tester on.
   
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
   
4. Turn the engine switch off and wait for at least 30 seconds.
   
5. Turn the engine switch on (IG) and turn the tester 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 (37 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 / DTC [E].
   
10. Read the 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 / Utility / All Readiness.
    
12. Input the DTC: P0011, P0012, P0021 or P0022.
    
13. Check the DTC judgment result.
    
    

    Tester Display	Description
    NORMAL	DTC judgment completed System normal
    ABNORMAL	DTC judgment completed System abnormal
    INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
    N/A	Unable to perform DTC judgment 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 (37 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 / DTC [H].
    
17. Read the 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

INSPECTION PROCEDURE

HINT:

1. If DTC P0011 or P0012 is output, check the VVT system (for intake camshaft of bank 1) circuit.
   
2. If DTC P0021 or P0022 is output, check the VVT system (for intake camshaft of bank 2) circuit.
   
3. Bank 1 refers to the bank that includes the No. 1 cylinder*.
   *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
   
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
   
5. DTC P0011, P0012, P0021 or P0022 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. Those foreign objects may then be captured by the oil filter.
   
6. Read freeze frame data using the intelligent tester. 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. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG).
   

3. Turn the tester on.
   

4. Enter the following menus: Powertrain / Engine / DTC.
   

5. Read the DTCs.
   
   

   Result 

   Result	Proceed to
   DTC P0011, P0012, P0021 or P0022 is output	A
   DTC P0011, P0012, P0021 or P0022 and other DTCs are output	B

   HINT:

   If any DTCs other than P0011, P0012, P0021 or P0022 are output, troubleshoot those DTCs first.

B	GO TO DTC CHART (Click here)

A

1. Connect the intelligent tester to the DLC3.
   

2. Start the engine.
   

3. Turn the tester on.
   

4. Turn the A/C switch on.
   

5. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Linear (Bank 1) or Control the VVT Linear (Bank 2).
   

6. Check the engine speed while operating the camshaft timing oil control valve assembly (for intake camshaft) using the tester.
   
   

   OK 

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

   HINT:

   Refer to "Data List / Active Test" [VVT OCV Duty #1, VVT Change Angle #1, VVT OCV Duty #2 and VVT Change Angle #2] (Click here).

NG	Go to step 4

OK

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG).
   

3. Turn the tester on.
   

4. Clear the DTCs (Click here).
   

5. Turn the engine switch off and wait for at least 30 seconds.
   

6. Turn the engine switch on (IG).
   

7. Turn the tester on.
   

8. Start the engine and warm it up.
   

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

10. Enter the following menus: Powertrain / Engine / DTC / Pending.
    

11. Read the pending DTCs.
    
    

    Result 

    Result	Proceed to
    DTC is not output	A
    DTC P0011, P0012, P0021 or P0022 is output	B

    HINT:

    DTC P0011, P0012, P0021 or P0022 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. Those foreign objects may then be captured by the oil filter.

B	Go to step 4

A
CHECK FOR INTERMITTENT PROBLEMS (Click here)

1. Remove the cylinder head cover sub-assemblies RH and LH (Click here).
   

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

3. Check that the timing marks of the camshaft timing gear assemblies and camshaft timing exhaust gear assemblies are aligned with the timing marks of the bearing cap as shown in the illustration.
   

   HINT:

   If the timing marks are not as shown, turn the crankshaft one revolution clockwise.

   OK:

   The timing marks on the camshaft timing gear assemblies and camshaft timing exhaust gear assemblies are aligned as shown in the illustration.
   

   Text in Illustration 

   *1	Timing Mark

NG	ADJUST VALVE TIMING (Click here)

OK

1. Inspect the camshaft timing oil control valve assembly (for intake camshaft) (Click here).
   

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

OK

1. Remove the oil pipe or No. 1 oil pipe (Click here).
   

2. Remove the oil control valve filter RH or oil control valve filter LH.
   

3. Check that the oil control valve filter and oil pipe are not clogged.
   

   OK:

   The oil control valve filter or oil pipe is not clogged.
   

   Text in Illustration 

   *1	Bank 1
   *2	Bank 2
   *a	Oil Pipe
   *b	No. 1 Oil Pipe

NG	REPLACE OIL CONTROL VALVE FILTER OR OIL PIPE (Click here)

OK

1. Replace the camshaft timing gear assembly (bank 1 or bank 2) (Click here).
   

   HINT:

   Perform "Inspection After Repair" after replacing the camshaft timing gear assembly (Click here).

NEXT

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG).
   

3. Turn the tester on.
   

4. Clear the DTCs (Click here).
   

5. Turn the engine switch off and wait for at least 30 seconds.
   

6. Turn the engine switch on (IG).
   

7. Turn the tester on.
   

8. Start the engine and warm it up.
   

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

10. Enter the following menus: Powertrain / Engine / DTC / Pending.
    

11. Read the pending DTCs.
    
    

    Result 

    Result	Proceed to
    DTC is not output	A
    DTC P0011, P0012, P0021 or P0022 is output	B

B	REPLACE ECM (Click here)

A
END