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

MONITOR DESCRIPTION

• The ECM optimizes the intake valve timing using the VVT (Variable Valve Timing) system to control the intake camshaft. The VVT system includes the ECM, camshaft timing oil control valve and VVT controller. The ECM sends a target duty cycle control signal to the camshaft timing oil control valve. 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 being stuck and stores a DTC.

• Example:

• A DTC is stored when the following conditions 1 and 2 are met:

• 
  

  • 1. It takes 5 seconds or more to change the valve timing by 5°CA.

  • 2. After the above condition 1 is met, the OCV is forcibly activated 63 times or more (when the vehicle is idling, this takes approximately 100 seconds).

• These DTCs indicate that the VVT controller cannot operate properly due to camshaft timing oil control valve malfunctions or the presence of foreign objects in the camshaft timing oil control valve.

WIRING DIAGRAM

Refer to DTC P0010 (Click here).

INSPECTION PROCEDURE

PROCEDURE

1. Click here

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

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the engine switch on (IG).

   3. Turn the GTS on.

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

   5. Read DTCs.

      Table 1. Result

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

      Tip:

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

   
   
   • AClick here
   • BClick here
2. Click here

   PERFORM ACTIVE TEST USING GTS (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE)

   
   

   1. Connect the GTS to the DLC3.

   2. Start the engine.

   3. Turn the GTS on.

   4. Warm up the engine.

   5. Turn the A/C on.

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

   7. Check the engine speed while operating the camshaft timing oil control valve using the GTS.

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

      Tip:

      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).

   
   
   • OKClick here
   • NGClick here
3. Click here

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

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the engine switch on (IG).

   3. Turn the GTS on.

   4. Clear DTCs (Click here).

   5. Start the engine and warm it up.

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

   7. Read the output pending DTCs using the GTS.

      OK
      No pending DTC output.

   
   
   • OKClick here
   • NGClick here
4. Click here

   CHECK FOR INTERMITTENT PROBLEMSClick here

5. Click here

   CHECK VALVE TIMING (CHECK FOR LOOSENESS IN TIMING CHAIN AND WHETHER TIMING CHAIN HAS JUMPED TOOTH)

   
   

   1. Remove the cylinder head cover LH and RH.

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

   3. Check that the alignment marks of the camshaft timing gears and camshaft timing exhaust gears are at the positions shown in the illustration.

      Tip:

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

      OK
      Alignment marks on camshaft timing gears are aligned as shown in the illustration.

   
   
   • OKClick here
   • NGClick here
6. Click here

   INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

   
   

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

   
   
   • OKClick here
   • NGClick here
7. Click here

   INSPECT OIL CONTROL VALVE FILTER

   
   

   1. Remove the oil control valve filter (Click here).

   2. Check that the filter is not clogged.

      OK
      Filter is not clogged.

   
   
   • OKClick here
   • NGClick here
8. Click here

   REPLACE CAMSHAFT TIMING GEAR ASSEMBLY

   
   

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

   
   
   • NEXTClick here
9. Click here

   GO TO DTC CHARTClick here

10. Click here

    ADJUST VALVE TIMINGClick here

11. Click here

    REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLYClick here

12. Click here

    CLEAN OR REPLACE OIL CONTROL VALVE FILTER

13. Click here

    CHECK WHETHER DTC OUTPUT RECURS

    
    

    1. Perform the Confirmation Driving Pattern.

       OK
       No pending DTC is output and All Readiness is NORMAL.

       Tip:

       DTC P0011, P0012, P0021 or P0022 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.

    
    
    • OKClick here
    • NGClick here
14. Click here

    REPLACE ECMClick here

15. Click here

    END