SFI SYSTEM, Diagnostic DTC:P0011, P0012

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 60 seconds (Condition "B").

• DTC P0011 (Advanced Cam Timing) is subject to 1 trip detection logic.

• DTC P0012 (Retarded Cam Timing) is 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 malfunction or the presence of foreign objects in the camshaft timing oil control valve assembly (for intake camshaft).

MONITOR STRATEGY

WIRING DIAGRAM

Refer to DTC P0010 (Click here).

CAUTION / NOTICE / HINT

PROCEDURE

1. Click here

   CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011 OR P0012)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the GTS on.

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

   5. Read the DTCs.

      Table 1. Result

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

      Tip:

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

   
   
   • AClick here
   • B

     GO TO DTC CHART (Click here)

2. Click here

   PERFORM ACTIVE TEST USING GTS (CONTROL THE VVT LINEAR)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the GTS on.

   4. Put the engine in inspection mode (maintenance mode) (Click here).

   5. Start the engine.

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

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

      Table 2. 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 and VVT Change Angle #1] (Click here).

      • If the result is not acceptable, cool the engine (engine coolant temperature is 50°C (122°F) or less) and perform the Active Test again.

      • Test not possible with the shift lever in P during charge control. Move the shift lever to N to perform test.

      • If the DTCs are stored after the Active Test, clear the DTCs (Click here).

   
   
   • OKClick here
   • NGClick here
3. Click here

   CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the GTS on.

   4. Clear the DTCs (Click here).

      Tip:
      

      • P0011 is output:

        Clear the DTC without using the GTS.

      • P0012 is output:

        Clear the DTC with using the GTS.

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

   6. Turn the power switch on (IG).

   7. Turn the GTS on.

   8. Put the engine in inspection mode (maintenance mode) (Click here).

   9. Start the engine and warm it up.

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

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

   12. Read the pending DTCs.

       Table 3. Result

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

       Tip:

       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.

   
   
   • A

     CHECK FOR INTERMITTENT PROBLEMS (Click here)

   • BClick here
4. Click here

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

   Table 4. Text in Illustration

   *1

   Timing Mark

   -

   -

   
   

   1. Remove the cylinder head cover sub-assembly (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 assembly and camshaft timing sprocket are at the positions shown in the illustration.

      Tip:

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

      OK
      Timing marks on camshaft timing gear assembly and camshaft timing sprocket are aligned as shown in the illustration.

   
   
   • OKClick here
   • NG

     ADJUST VALVE TIMING (Click here)

5. Click here

   INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

   
   

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

   
   
   • OKClick here
   • NG

     REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (Click here)

6. Click here

   INSPECT OIL CONTROL VALVE FILTER

   
   

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

   2. Check that the oil control valve filter is not clogged.

      OK
      Oil control valve filter is not clogged.

   
   
   • OKClick here
   • NG

     REPLACE OIL CONTROL VALVE FILTER (Click here)

7. Click here

   REPLACE CAMSHAFT TIMING GEAR ASSEMBLY

   
   

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

      Tip:

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

   
   
   • NEXTClick here
8. Click here

   CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the GTS on.

   4. Clear the DTCs (Click here).

      Tip:
      

      • P0011 is output:

        Clear the DTC without using the GTS.

      • P0012 is output:

        Clear the DTC with using the GTS.

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

   6. Turn the power switch on (IG).

   7. Turn the GTS on.

   8. Put the engine in inspection mode (maintenance mode) (Click here).

   9. Start the engine and warm it up.

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

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

   12. Read the pending DTCs.

       Table 5. Result

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

   
   
   • A

     END

   • B

     REPLACE ECM (Click here)