SFI SYSTEM, 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

Refer to DTC P0013 Click here.

DTC No. DTC Detection Condition Trouble Area
P0014 The valve timing is stuck at a certain value when in the advance range (2 trip detection logic).
  • Valve timing

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

  • Oil control valve filter

  • Camshaft timing exhaust gear assembly

  • ECM

P0015 The valve timing is stuck at a certain value when in the retard range (1 trip detection logic).

MONITOR DESCRIPTION

The ECM optimizes the exhaust valve timing using the Variable Valve Timing (VVT) system to control the exhaust camshaft. The VVT system includes the ECM, the camshaft timing oil control valve assembly (for exhaust camshaft) and the VVT controller (camshaft timing exhaust gear assembly). The ECM sends a target duty-cycle control signal to the camshaft timing oil control valve assembly (for exhaust camshaft). This control signal regulates the oil pressure supplied to the VVT controller. The VVT controller can advance or retard the exhaust camshaft.

If the difference between the target and actual exhaust valve timing is large, and changes in the actual exhaust valve timing are small, the ECM interprets this as a VVT controller stuck malfunction and stores a DTC.


CONFIRMATION DRIVING PATTERN

A01EIVDE06

  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 procedure) Click here.

  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 37 mph (60 km/h) 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: P0014, 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 37 mph (60 km/h) 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.

WIRING DIAGRAM

Refer to DTC P0013 Click here.

INSPECTION PROCEDURE

Tech Tips


  • DTC P0014 or P0015 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain set even if the system returns to normal after a short time. Those foreign objects may then be captured by the oil filter.

  • Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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 ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0014 OR P0015)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

    5. Read the DTCs.

      Result
      Result Proceed to
      DTC P0014 or P0015 is output A
      DTC 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 ASSEMBLY)


    1. Connect the GTS to the DLC3.

    2. Start the engine.

    3. Turn the GTS on.

    4. Turn the A/C switch on.

    5. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank 1).

    6. Check the engine speed while operating the camshaft timing oil control valve assembly (for exhaust camshaft) using the GTS.

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

      Tech Tips


      • Refer to "Data List / Active Test" [VVT Ex OCV Duty #1 and VVT Ex Chg 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.


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


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

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

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

    7. Start the engine and warm it up.

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

    9. Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

    10. Read the pending DTCs.

      Result
      Result Proceed to
      DTC is not output A
      DTC P0014 or P0015 is output B

      Tech Tips

      DTC P0014 or P0015 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
    A
  4. CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH)


    1. Remove the cylinder head cover sub-assembly Click here.

      A01EM7ZE02
      Text in Illustration
      *1 Timing Mark - -
    2. Turn the crankshaft pulley, and align its groove with the timing mark "0" of the timing chain cover.

    3. Check that the timing marks of the camshaft timing gears are aligned with the timing marks as 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 gears are aligned as shown in the illustration.

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


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


    NG
    OK
  6. INSPECT OIL CONTROL VALVE FILTER


    1. A01ELTGE02
      Text in Illustration
      *1 Oil Control Valve Filter

      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.

    NG
    OK
  7. REPLACE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY


    1. Replace 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 ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs Click here.

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

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

    7. Start the engine and warm it up.

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

    9. Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

    10. Read the pending DTCs.

      Result
      Result Proceed to
      DTC is not output A
      DTC P0014 or P0015 is output B

    B
    A