SFI SYSTEM, Diagnostic DTC:P0011, P0012, P0021, P0022

DESCRIPTION

Refer to DTC P0010 Click here.

MONITOR DESCRIPTION

• 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.

• 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.

• Example:

• A DTC is stored when the following conditions "A" and "B" are met:




1. It takes 5 seconds or more to change the valve timing by 5°CA (Condition "A").

2. After the above condition is met, the camshaft timing oil control valve assembly (for intake camshaft) is forcibly activated for 10 seconds (Condition "B").

• DTCs P0011 and P0021 (Advanced Cam Timing) are subject to 1 trip detection logic.

• DTCs P0012 and P0022 (Retarded Cam Timing) are subject to 2 trip detection logic.

• 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

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

• If the difference between the target and actual camshaft timing is greater than the specified value, the ECM operates the camshaft timing oil control valve assembly for 10 seconds by applying and releasing oil pressure. Then, the ECM monitors the camshaft timing change for 10 seconds.

MONITOR RESULT

Refer to detailed information in Checking Monitor Status Click here.

CONFIRMATION DRIVING PATTERN

1. Connect the Techstream to the DLC3.

2. Turn the engine switch on (IG) and turn the Techstream 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 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 (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 / Trouble Codes [E].

10. Read the pending DTCs.

    Tech Tips

    
    

    • If a pending DTC is output, the system is malfunctioning.

    • 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.

    Techstream 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

    Tech Tips

    
    

    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • 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.

    Tech Tips

    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 / Trouble Codes [H].

17. Read the pending DTCs.

    Tech Tips

    
    

    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

18. Check the DTC judgment result again.

    Tech Tips

    
    

    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the following procedure.

19. Perform a universal trip and check for permanent DTCs Click here.

    Tech Tips

    
    

    • If a permanent DTC is output, the system is malfunctioning.

    • If no permanent DTC is output, the system is normal.

WIRING DIAGRAM

Refer to DTC P0010 Click here.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011, P0012, P0021 OR P0022)

   
   

   1. Connect the Techstream to the DLC3.

   2. Turn the engine switch on (IG).

   3. Turn the Techstream on.

   4. Enter the following menus: Powertrain / Engine / Trouble Codes.

   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

      Tech Tips

      If any DTCs other than P0011, P0012, P0021 or P0022 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.

   2. Start the engine.

   3. Turn the Techstream 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 Techstream.

      OK

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

      Tech Tips

      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

   CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) Click here

   OK

3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011, P0012, P0021 OR P0022)

   
   

   1. Connect the Techstream to the DLC3.

   2. Turn the engine switch on (IG).

   3. Turn the Techstream 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 Techstream 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 / Trouble Codes / Pending.

   11. Read the pending DTCs.

       Result

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

       Tech Tips

       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

   CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) Click here

   A

   CHECK FOR INTERMITTENT PROBLEMS Click here

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

   
   
   1. 

      Text in Illustration

      *1	Timing Mark

      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.

      Tech Tips

      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.

   
   

   NG

   ADJUST VALVE TIMING Click here

   OK

5. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT)

   
   

   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

6. INSPECT OIL CONTROL VALVE FILTER AND OIL PIPE

   
   
   1. 

      Text in Illustration

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

      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.

   
   

   NG

   REPLACE OIL CONTROL VALVE FILTER OR OIL PIPE Click here

   OK

7. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY

   
   

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

      Tech Tips

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

   
   

   NEXT

8. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011, P0012, P0021 OR P0022)

   
   

   1. Connect the Techstream to the DLC3.

   2. Turn the engine switch on (IG).

   3. Turn the Techstream 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 Techstream 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 / Trouble Codes / 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