P2610

2AZ-FXE ENGINE CONTROL: SFI SYSTEM: P2610: ECM / PCM Internal Engine Off Timer Performance
P2610 - ECM / PCM Internal Engine Off Timer Performance

DTC SUMMARY





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 hybrid vehicle control ECU to perform malfunction checks which can only be performed after the engine is stopped. The soak timer is built into the hybrid vehicle control ECU.





MONITOR DESCRIPTION

1. If the soak timer activates the hybrid vehicle control ECU 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 hybrid vehicle control ECU even though a considerable amount of time has elapsed since the power switch was turned off, the hybrid vehicle control ECU determines that the soak timer is malfunctioning, illuminates the MIL and stores a DTC the next time the power switch is turned on (IG).

2. While the engine is running, the hybrid vehicle control ECU monitors the synchronization of the soak timer and the CPU clock. If these two are not synchronized, the hybrid vehicle control ECU interprets this as a malfunction, illuminates the MIL and sets the DTC (2 trip detection logic).

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS

All





Case 1





Case 2





Case 3





TYPICAL MALFUNCTION THRESHOLDS

Case 1





Case 2





Case 3





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) Reading and Clearing Diagnostic Trouble Codes.

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

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

6. Put the engine in inspection mode (maintenance mode) Component Tests and General Diagnostics.

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.

HINT
- 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.





HINT
- 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 Reading and Clearing Diagnostic Trouble Codes.

HINT
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.

INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT
- DTC P2610 is set if an internal hybrid vehicle control ECU problem is detected. Diagnostic procedures are not required. Hybrid vehicle control ECU replacement is required.
- Read freeze frame data using the Techstream. The hybrid vehicle control ECU 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 HYBRID VEHICLE CONTROL ECU

(a) Replace the hybrid vehicle control ECU Removal.

NEXT -- Continue to next step.

2. CHECK WHETHER DTC OUTPUT RECURS

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(e) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

(f) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.

(g) If no pending DTC is displayed, the repair has been successfully completed.

NEXT -- END