SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P261029, P261093

DTC Code DTC Name
P261029 ECM/PCM Engine Off Timer Performance Signal Invalid
P261093 ECM/PCM Engine Off Timer Performance No Operation

DTC SUMMARY

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P261029 ECM/PCM Engine Off Timer Performance Signal Invalid ECM internal malfunction ECM Comes on DTC stored SAE Code: P2610
P261093 ECM/PCM Engine Off Timer Performance No Operation ECM internal malfunction ECM Comes on DTC stored SAE Code: P2610
DTC No. Monitoring Item Detection Timing Detection Logic
P261029 Soak timer (built into ECM)

EVAP monitoring

(engine switch off)

 2 trip
P261093 Soak timer (built into ECM) Engine switch on (IG) 2 trip

DESCRIPTION

The soak timer operates after the engine switch is turned off. When a certain amount of time has elapsed after turning the engine switch off, the soak timer activates the ECM to perform malfunction checks which can only be performed after the engine is stopped. The soak timer is built into the ECM.

B0084PBE08

MONITOR DESCRIPTION

If the soak timer activates the ECM even though only a short amount of time has elapsed since the engine switch was turned off, or if the soak timer does not activate the ECM even though a considerable amount of time has elapsed since the engine switch was turned off, the ECM determines that the soak timer is malfunctioning, illuminates the MIL and stores a DTC the next time the engine switch is turned on (IG).

MONITOR STRATEGY

Required Sensors/Components ECM
Frequency of Operation Once per driving cycle

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).

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

  6. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

  7. Turn the engine switch off and wait for at least 15 seconds.

  8. Start the engine.

  9. Stop the engine and leave the vehicle for 60 minutes or more.

  10. Turn the engine switch on (IG).

  11. Turn the GTS on.

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

  13. 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.

  14. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  15. Input the DTC: P261029 or P261093.

  16. 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

    Tech Tips


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

    • If the judgment result is ABNORMAL, the system has a malfunction.

CAUTION / NOTICE / HINT

Tech Tips


  • DTC P261029 or P261093 is set if an internal ECM problem is detected. Diagnostic procedures are not required. ECM replacement is required.

  • 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. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  2. CLEAR DTC


    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.

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK WHETHER DTC OUTPUT RECURS (DTC P261029 OR P261093)


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

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

    3. Read the Pending DTCs.


      Powertrain > Engine > Trouble Codes

      Tech Tips

      If no pending DTC is output, the repair has been successfully completed.

      Result
      Proceed to
      NEXT

    NEXT

    END