SFI SYSTEM, Diagnostic DTC:P2610

DTC Code DTC Name
P2610 ECM / PCM Internal Engine Off Timer Performance

DTC SUMMARY

DTC No. Monitoring Item Malfunction Detection Condition Trouble Area Detection Timing Detection Logic
P2610 Soak timer (built into ECM) ECM internal malfunction ECM Power switch off 2 trip

DESCRIPTION

The soak timer operates after the power switch is turned off. When a certain amount of time has elapsed after turning the power 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.

A01I5K7E01

MONITOR DESCRIPTION


  1. While the engine is running, the ECM monitors the synchronization of the soak timer and the CPU clock. If these two are not synchronized, the ECM interprets this as a malfunction, illuminates the MIL and stores the DTC.

  2. If the soak timer activates the ECM even though only a short amount of time has elapsed since the power 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 power switch was turned off, the ECM determines that the soak timer is malfunctioning, illuminates the MIL and stores a DTC the next time the power switch is turned on (IG).

MONITOR STRATEGY

Related DTC P2610: ECM internal engine off timer performance
Required Sensors/Components (Main) ECM
Required Sensors/Components (Related) -
Frequency of Operation Once per driving cycle
Duration

2 times : Case 1

- : Case 2 and 3
MIL Operation 2 driving cycles
Sequence of Operation None

TYPICAL ENABLING CONDITIONS

All
Monitor runs whenever the following DTCs are not stored None
Case 1
All of the following conditions are met -
Power switch Off
Auxiliary battery voltage 8 V or higher
CPU clock elapsed time 1.96608 seconds or more
Case 2
All of the following conditions are met -
Internal engine off timer (elapsed time from engine stop) 10 minutes or more, and less than 30 minutes
Auxiliary battery voltage 8 V or higher
Power switch On (IG)
Case 3
All of the following conditions are met -
Internal engine off timer (elapsed time from engine stop) 40 minutes or more
Auxiliary battery voltage 8 V or higher
Power switch On (IG)

TYPICAL MALFUNCTION THRESHOLDS

Case 1
One of the following conditions is met Condition A, B or C
A. Both of the following conditions are met Condition (a) and (b)
(a) CPU clock elapsed time 1.96608 seconds or more, and less than 8.323072 seconds
(b) Internal engine off timer 9.375 seconds or more
B. Both of the following conditions are met Condition (c) and (d)
(c) CPU clock elapsed time 8.323072 to 10.420224 seconds
(d) Internal engine off timer 18.75 seconds or more
C. Both of the following conditions are met Condition (e) and (f)
(e) CPU clock elapsed time More than 10.420224 seconds
(f) Internal engine off timer Less than 9.375 seconds
Case 2
ECM started by internal engine off timer last trip Yes
Case 3
ECM started by internal engine off timer last trip No

CONFIRMATION DRIVING PATTERN


  1. Connect the Techstream to the DLC3.

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

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

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

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

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

  7. Start the engine.

  8. Idle the engine for 10 minutes or more.

  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: P2610.

  13. Check the DTC judgment result.

    Techstream 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.

  14. If the judgment result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs Click here.

    Tech Tips


    • If a permanent DTC is output, the system is malfunctioning.

    • If no permanent DTC is output, the system is normal.

INSPECTION PROCEDURE

Tech Tips


  • DTC P2610 is set if an internal ECM problem is detected. Diagnostic procedures are not required. ECM replacement is required.

  • Read freeze frame data using the Techstream. 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.


    NEXT

  2. CHECK WHETHER DTC OUTPUT RECURS (DTC P2610)


    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the Techstream on.

    4. Clear the DTCs Click here.

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

    6. Turn the power switch on (IG).

    7. Turn the Techstream on.

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

    9. Start the engine and wait for 10 minutes or more.

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

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


    NEXT

    END