SFI SYSTEM, Diagnostic DTC:P0012

DTC Code DTC Name
P0012 Camshaft Position "A" - Timing Over-Retarded (Bank 1)

DESCRIPTION

Refer to DTC P0010.

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DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0012 Camshaft Position "A" - Timing Over-Retarded (Bank 1) With engine warmed up and while driving in urban area (engine speed 4000 rpm or less), valve timing on bank 1 intake side remains in retarded position (1 trip detection logic).

  • Camshaft timing gear assembly

  • Cam timing control motor with EDU assembly

  • ECM

 Comes on DTC stored

MONITOR DESCRIPTION

This DTC is output when a valve timing stuck condition is detected. With the engine speed at 4000 rpm or less in the retard angle position, if the valve timing does not vary, and there is a large difference in the target and actual valve timing, it is determined that a malfunction has occurred. If this condition is detected while driving, a DTC is output (1 trip detection logic).

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the ignition switch to ON.

  3. Turn the GTS on.

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

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

  6. Turn the ignition switch to ON.

  7. Turn the GTS on.

  8. Drive the vehicle in an urban area for 5 minutes.

    CAUTION:

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

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

  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: P0012

  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 the Confirmation Driving Pattern and check the DTC judgment result again.

CAUTION / NOTICE / HINT

Tech Tips


  • The GTS only:

    By using the Control the VVT-iE Linear (Bank 1) Active Test, it can be determined if the VVT-iE system is malfunctioning.


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Start the engine and warm it up.

    5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT-iE Linear (Bank 1) / Data List / VVT Target Angle #1 and VVT Change Angle #1.

    6. Perform the Active Test operation with the engine speed at 1500 rpm.

      OK:
      Active Test Movement Order Difference between "VVT Target Angle #1" and "VVT Change Angle #1"
      0 deg → 10 deg → 20 deg → 40 deg → 10 deg → 0 deg → 10 deg → END Within 5 DegFR

  • 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 P0012)


    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 and ECT / Trouble Codes.

    5. Read the DTCs.

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

      Tech Tips

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


    B

    GO TO DTC CHART Click here

    A

  2. INSPECT CAMSHAFT TIMING GEAR ASSEMBLY

    A004A74C14
    *1 Camshaft Timing Gear Assembly
    *2 Eccentric Shaft
    *a Spline
    Result
    Proceed to
    OK
    NG

    1. Remove the camshaft timing control motor.

      Click here

    2. Check if the camshaft timing gear assembly eccentric shaft rotates smoothly.

      OK
      Rotates smoothly.

      Tech Tips

      Perform "Inspection After Repair" after repairing or replacing the camshaft timing gear assembly or cam timing control motor with EDU assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CAMSHAFT TIMING GEAR ASSEMBLY Click here

    OK

  3. REPLACE CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY


    1. Replace the cam timing control motor with EDU assembly.

      Click here

      Tech Tips

      Perform "Inspection After Repair" after replacing the cam timing control motor with EDU assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.

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

    6. Turn the ignition switch to ON.

    7. Turn the GTS on.

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

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

    10. Read the DTCs.

      Result
      Result Proceed to
      DTCs are not output A
      DTC P0012 is output B

    A

    END

    B

    REPLACE ECM Click here