SFI SYSTEM (w/ Dual VVT-i), Diagnostic DTC:P0014, P0015

DTC Code DTC Name
P0014 Camshaft Position "B" - Timing Over-Advanced or System Performance (Bank 1)
P0015 Camshaft Position "B" - Timing Over-Retarded (Bank 1)

DESCRIPTION

Tech Tips

If DTC P0014 or P0015 is output, check the VVT (Variable Valve Timing) system.

The Variable Valve Timing (VVT) system includes the ECM, camshaft timing oil control valve and camshaft timing exhaust gear. 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 camshaft timing exhaust gear. Camshaft timing control is performed according to engine operating conditions such as the intake air volume, throttle valve position and engine coolant temperature. The ECM controls the camshaft timing oil control valve based on the signals transmitted by several sensors. The camshaft timing exhaust gear regulates the exhaust camshaft angle using oil pressure through the camshaft timing oil control valve. As a result, the relative positions of the camshaft and crankshaft are optimized, the engine torque and fuel economy improve and the exhaust emissions decrease under overall driving conditions. The ECM detects the actual exhaust valve timing using signals from the VVT and crankshaft position sensors and performs feedback control. This is how the target exhaust valve timing is verified by the ECM.

A003DGIE42
DTC No. DTC Detection Condition Trouble Area
P0014 Exhaust valve timing is not adjusted in the advance range (2 trip detection logic).
  • Valve timing

  • Camshaft timing oil control valve assembly (for exhaust side)

  • Oil control valve filter

  • Camshaft timing exhaust gear assembly

  • ECM

P0015 Exhaust valve timing is not adjusted in the retard range (1 trip detection logic).
  • Valve timing

  • Camshaft timing oil control valve assembly (for exhaust side)

  • Oil control valve filter

  • Camshaft timing exhaust gear assembly

  • ECM

MONITOR DESCRIPTION


MONITOR STRATEGY

Required Sensors/Components (Main) Camshaft timing oil control valve assembly (for exhaust side) and Camshaft timing exhaust gear assembly
Required Sensors/Components (Related) Crankshaft position sensor, Camshaft position sensor and Engine coolant temperature sensor
Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN

A003CUYE10

  1. Connect the GTS to the DLC3.

  2. Turn the ignition switch to ON and turn the GTS on.

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

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

  5. Turn the ignition switch to ON and turn the GTS 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 and ECT / 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 and ECT / Utility / All Readiness.

  12. Input the DTC: P0014 or P0015.

  13. Check the DTC judgment result.

    GTS 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 and ECT / 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.

WIRING DIAGRAM

Refer to DTC P0013 Click here.

INSPECTION PROCEDURE

Tech Tips

Timing Over-advanced

(Valve Timing is Out of Specified Range)

Timing Over-retarded

(Valve Timing is Out of Specified Range)

P0014 P0015

Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. 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.

PROCEDURE


  1. CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0014, P0015, P0024 OR P0025)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

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

    4. Read the DTCs.

      Result
      Result Proceed to
      P0014 or P0015 is output A
      P0014 or P0015 and other DTCs are output B

      Tech Tips

      If any DTCs other than P0014 or P0015 are output, troubleshoot those DTCs first.


    B
    A
  2. 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 Exhaust Linear (Bank 1).

    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

    NG
    OK
  3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0014 OR P0015)


    1. Connect the GTS to the DLC3.

    2. Turn the GTS on.

    3. Clear the DTCs Click here.

    4. Warm up the engine.

    5. Switch the ECM from normal mode to check mode using the GTS Click here.

    6. Drive the vehicle for more than 10 minutes.

    7. Read the DTCs using the GTS.

      OK
      No DTC output.

    NG
    OK
  4. CHECK VALVE TIMING (CHECK FOR LOOSE TEETH AND WHETHER TIMING CHAIN HAS JUMPED TOOTH)


    1. A003I73E15
      Text in Illustration
      *1 Timing Mark

      Remove the cylinder head cover.

    2. Turn the crankshaft to align the timing marks of the crankshaft.

    3. Align the groove of the crankshaft pulley with the "0" position.

    4. Confirm whether the timing marks of the camshaft pulley and cylinder head cover are facing each other.

      Tech Tips

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

      OK
      The timing marks of the camshaft pulley and the cylinder head cover face each other when the groove of the crankshaft pulley is in the "0" position.

    NG
    OK
  5. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST SIDE)


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


    NG
    OK
  6. INSPECT OIL CONTROL VALVE FILTER


    1. Remove the oil control valve filter.

    2. Check that the filter is not clogged.

      OK
      The filter is not clogged.

    NG
    OK
  7. REPLACE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY


    1. Replace the camshaft timing exhaust gear assembly Click here.

      Tech Tips

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


    NEXT
  8. CHECK WHETHER DTC OUTPUT RECURS (DTC P0014 OR P0015)


    1. Connect the GTS to the DLC3.

    2. Turn the GTS on.

    3. Clear the DTCs Click here.

    4. Warm up the engine.

    5. Switch the ECM from normal mode to check mode using the GTS Click here.

    6. Drive the vehicle for more than 10 minutes.

    7. Read the output DTCs using the GTS.

      OK
      No DTC output.

      Tech Tips

      DTC P0014 or P0015 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.


    NG
    OK