SFI SYSTEM(w/o Canister Pump Module), Diagnostic DTC:P1023, P2614

DTC Code DTC Name
P1023 Camshaft Position Signal Output "B" Circuit
P2614 Camshaft Position Signal Output Circuit / Open

DESCRIPTION

Refer to DTC P0010.

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DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P1023 Camshaft Position Signal Output "B" Circuit Malfunction in rotation sensor of cam timing control motor with EDU assembly RH (bank 2) is detected for 3 seconds (1 trip detection logic).

  • Cam timing control motor with EDU assembly RH (bank 2)

  • ECM

 Comes on DTC stored
P2614 Camshaft Position Signal Output Circuit / Open Malfunction in rotation sensor of cam timing control motor with EDU assembly LH (bank 1) is detected for 3 seconds (1 trip detection logic).

  • Cam timing control motor with EDU assembly LH (bank 1)

  • ECM

 Comes on DTC stored
Symptoms and Fail-safe Operation During Camshaft Control Motor with EDU Assembly Malfunction
Vehicle Condition Fail-Safe

  • Deterioration of driving performance as result of engine combustion degradation

  • Engine output deficiency

  • Power to cam timing control motor with EDU assembly is cut

  • Valve timing of bank that is operating normally is fixed at maximum retard angle

MONITOR DESCRIPTION

This DTC is output when a malfunction in the intake side cam timing control motor with EDU assemblies rotation sensor is detected. The cam timing control motor with EDU assembly is equipped with a self diagnostic function, which is used to output the duty ratio (when normal: 70 to 90%) as a signal (VTM) to the ECM. If the ECM receives a duty signal of 40%, a DTC is output immediately (1 trip detection logic).

MONITOR STRATEGY

Required sensor/Components (Main) Cam timing control motor with EDU assembly
Required sensor/Components (Related) -
Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG).

  3. Turn the GTS on.

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

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

  6. Turn the engine switch on (IG).

  7. Turn the GTS on.

  8. Start the engine.

  9. Idle the engine for 10 seconds or more.

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

  11. Read the pending DTC.

    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 / Utility / All Readiness.

  13. Input the DTC: P1023 or P2614.

  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 ABNORMAL, the system has a malfunction.

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

    • 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


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

    *: The No. 1 cylinder is the cylinder which is farthest from the 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 be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

PROCEDURE


  1. REPLACE CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY (BANK 1 OR BANK 2)


    1. Replace the camshaft timing control motor (bank1 or bank2).

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      Tech Tips

      Perform "Inspection After Repair" after replacing the camshaft timing control motor.

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      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK WHETHER DTC OUTPUT RECURS (DTC P1023 AND P2614)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine > Clear DTCs

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

    6. Turn the engine switch on (IG).

    7. Turn the GTS on.

    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.


      Powertrain > Engine > Trouble Codes

    10. Read the DTCs.

      Result
      Result Proceed to
      DTCs are not output A
      Other DTCs are output B

    A

    END

    B

    REPLACE ECM Click here