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 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. 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 is forcibly activated for 10 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.

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 VVT actuator 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 power switch on (IG) and turn the Techstream on.

3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

   Tech Tips

   • P0011 is output:

     Clear the DTC not using the Techstream.

   • P0012 is output:

     Clear the DTC using the Techstream.

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

5. Turn the power switch on (IG) and turn the Techstream on [A].

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

7. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [B].

8. Accelerate the vehicle to 60 km/h (37 mph) or more by depressing the accelerator pedal for 10 seconds or more [C].

   CAUTION:

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

   Tech Tips

   If the engine stops, further depress the accelerator pedal to restart the engine.

9. Idle the engine for 30 seconds or more with the shift lever in P [D].

10. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [E].

11. 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.

12. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

13. Input the DTC: P0011 or P0012.

14. 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].

15. Accelerate the vehicle to 60 km/h (37 mph) or more by depressing the accelerator pedal for 10 seconds or more [F].

    CAUTION:

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

16. Idle the engine for 30 seconds or more with the shift lever in P [G].

17. Check the DTC judgment result again [H].

    Tech Tips

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

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

18. If the judgment result is INCOMPLETE or N/A and no pending DTC is output, 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 OR P0012)

   1. Connect the Techstream to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the Techstream on.

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

   5. Read the DTCs.

      Result

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

      Tech Tips

      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.

   2. Turn the power switch on (IG).

   3. Turn the Techstream 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 Techstream.

      OK

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

      Tech Tips

      • 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.

   NG

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

   OK

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

   1. Connect the Techstream to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the Techstream on.

   4. Clear the DTCs Click here.

      Tech Tips

      • P0011 is output:

        Clear the DTC not using the Techstream.

      • P0012 is output:

        Clear the DTC using the Techstream.

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

   6. Turn the power switch on (IG).

   7. Turn the Techstream 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.

       Result

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

       Tech Tips

       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

   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)

   

   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.

      Tech Tips

      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.

   NG

   ADJUST VALVE TIMING Click here

   OK

5. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

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

   NG

   REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Click here

   OK

6. INSPECT OIL CONTROL VALVE FILTER

   1. Remove the oil control valve filter Click here.

   2. Check that the filter is not clogged.

      OK
      Oil control valve filter is not clogged.

   NG

   REPLACE OIL CONTROL VALVE FILTER Click here

   OK

7. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY

   1. Replace the camshaft timing gear assembly 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 OR P0012)

   1. Connect the Techstream to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the Techstream on.

   4. Clear the DTCs Click here.

      Tech Tips

      • P0011 is output:

        Clear the DTC not using the Techstream.

      • P0012 is output:

        Clear the DTC using the Techstream.

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

   6. Turn the power switch on (IG).

   7. Turn the Techstream 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.

       Result

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

   B

   REPLACE ECM Click here

   A

   END