SFI SYSTEM, Diagnostic DTC:P0014, P0015, P0024, P0025

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)
P0024 Camshaft Position "B" - Timing Over-Advanced or System Performance (Bank 2)
P0025 Camshaft Position "B" - Timing Over-Retarded (Bank 2)

DESCRIPTION

Refer to DTC P0013 Click here.

DTC No. DTC Detection Condition Trouble Area

P0014

P0024

Exhaust 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 (bank 1, 2)

  • Oil control valve filter (bank 1, 2)

  • Camshaft timing exhaust gear assembly

  • ECM

P0015

P0025

Exhaust valve timing is stuck at a certain value when in the retard range

(1 trip detection logic)

  • Valve timing

  • Camshaft timing oil control valve assembly for exhaust camshaft (bank 1, 2)

  • Oil control valve filter (bank 1, 2)

  • Camshaft timing exhaust gear assembly

  • ECM

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.


MONITOR STRATEGY

Required sensors/components (Main) Camshaft timing oil control valve assembly and camshaft timing exhaust gear assembly
Required sensors/components (Related) Crankshaft position sensor, VVT sensor and engine coolant temperature sensor
Frequency of operation Continuous

CONFIRMATION DRIVING PATTERN

B002BP8E45

  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG) and turn the GTS on.

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

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

  5. Turn the power switch on (IG) and turn the GTS 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 [D].

  10. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending [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: P0014, P0015, P0024 or P0025.

  14. 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].

  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.

    Tech Tips

    Depress the accelerator pedal by a large amount.

  16. Idle the engine for 30 seconds or more [G].

  17. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending [H].

  18. 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.

  19. 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.

    • If the judgment result shows INCOMPLETE or N/A, perform the following procedure.

WIRING DIAGRAM

Refer to DTC P0013 Click here.

CAUTION / NOTICE / HINT

Tech Tips

Abnormal Bank

Timing Over Advanced

(Valve timing is out of specified range)

Timing Over Retarded

(Valve timing is out of specified range)
Bank 1 P0014 P0015
Bank 2 P0024 P0025

  • If DTC P0014 or P0015 is displayed, check the exhaust camshaft circuit for the right bank VVT system (bank 1).

  • If DTC P0024 or P0025 is displayed, check the exhaust camshaft circuit for the left bank VVT system (bank 2).

  • Bank 1 refers to the bank that includes the No. 1 cylinder*.

    *: The No. 1 cylinder is the cylinder which is farthest from transmission.

  • Bank 2 refers to the bank that does not include the No. 1 cylinder.

  • 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, P0015, P0024 OR P0025)


    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.

      Result
      Result Proceed to
      DTC P0014, P0015, P0024 or P0025 is output A
      DTC P0014, P0015, P0024 or P0025 and other DTCs are output B

      Tech Tips

      If any DTCs other than P0014, P0015, P0024 or P0025 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. PERFORM ACTIVE TEST USING GTS (CONTROL THE VVT EXHAUST LINEAR (BANK 1 OR 2))


    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 Exhaust Linear (Bank 1) or Control the VVT Exhaust Linear (Bank 2).

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

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

      Tech Tips


      • Refer to "Data List / Active Test" [VVT Ex OCV Duty #1, VVT Ex Chg Angle #1, VVT Ex OCV Duty #2 and VVT Ex Chg Angle #2] Click here.

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


    NG

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

    OK

  3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0014, P0015, P0024 OR P0025)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG) and turn the GTS on.

    3. Clear DTCs Click here.

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

    5. Turn the power switch on (IG) and turn the GTS on.

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

    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 and ECT / Trouble Codes / Pending.

    10. Read the pending DTCs.

      Result
      Result Proceed to
      DTC is not output A
      DTC P0014, P0015, P0024 or P0025 is output B

      Tech Tips

      DTC P0014, P0015, P0024 or P0025 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.


    A

    CHECK FOR INTERMITTENT PROBLEMS Click here

    B

  4. CHECK VALVE TIMING (CHECK FOR LOOSE OR JUMPED TEETH ON TIMING CHAIN)


    1. Remove the cylinder head cover sub-assemblies RH and LH.

      B002BUEE01

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

    3. Align the notch of the crankshaft pulley to the "0" position.

    4. Check if the timing marks of the camshaft pulley and camshaft bearing cap align.

      Text in Illustration
      *1 Timing Mark

    5. Turn the crankshaft clockwise 360° if the timing marks do not align. Check if they align once again.

      OK
      The timing marks of the camshaft pulley and the camshaft bearing cap align when the notch of the crankshaft pulley is in the "0" position.

    6. Reinstall the cylinder head cover sub-assemblies RH and LH.


    NG

    ADJUST VALVE TIMING Click here

    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

    REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT) Click here

    OK

  6. INSPECT OIL CONTROL VALVE FILTER AND OIL PIPE


    1. Remove the No. 1 oil pipe or No. 2 oil pipe.

      B002BEWE01

    2. Remove the oil control valve filter RH or oil control valve filter LH.

    3. Check that the oil control valve filter and oil pipe are not clogged.

      OK
      The oil control valve filter and oil pipe are not clogged.
      Text in Illustration
      *1 Bank 1
      *2 Bank 2

    4. Reinstall the oil control valve filter RH or oil control valve filter LH.

    5. Reinstall the No. 1 oil pipe or No. 2 oil pipe.


    NG

    REPLACE OIL CONTROL VALVE FILTER OR OIL PIPE Click here

    OK

  7. REPLACE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY


    1. Replace the camshaft timing exhaust gear assembly (bank 1 or bank 2) 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 P0014, P0015, P0024 OR P0025)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG) and turn the GTS on.

    3. Clear DTCs Click here.

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

    5. Turn the power switch on (IG) and turn the GTS on.

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

    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 and ECT / Trouble Codes / Pending.

    10. Read the pending DTCs.

      Result
      Display (DTC output) Proceed to
      DTC is not output A
      DTC P0014, P0015, P0024 or P0025 is output B

    A

    END

    B

    REPLACE ECM Click here