P2610

P2610 ECM INTERNAL TIMER

Description

This ECM contains a timer and measures time between an ignition switch OFF and the next ignition switch
ON. This enables the judging of the state of engine cooling at an engine start.


DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. INSPECTION START

It is necessary to erase permanent DTC?
YES- GO TO 4.
NO- GO TO 2.

2. PRECONDITIONING

1.Turn ignition switch OFF and wait at least 10 seconds.
2.Turn ignition switch ON.
3.Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is 12 V or more under ignition switch OFF condition.
- GO TO 3.

3. PERFORM DTC CONFIRMATION PROCEDURE-I

1.Turn ignition switch ON and wait at least 190 seconds.
2.Check 1st trip DTC.
Is 1st trip DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END

4. PRECONDITIONING

1.Turn ignition switch OFF and wait at least 10 seconds.
2.Turn ignition switch ON.
3.Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
-Before performing the following procedure, confirm that battery voltage is 12 V or more under ignition switch OFF condition.
-Before performing the following procedure, check that fuel level is between 2/8 and 7/8.
- GO TO 5.

5. PERFORM DTC CONFIRMATION PROCEDURE-I

1.Turn ignition switch ON and wait at least 190 seconds.
2.Check 1st trip DTC.
Is 1st trip DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- GO TO 6.

6. PERFORM DTC CONFIRMATION PROCEDURE-II


CAUTION:
To start this self-diagnosis, the conditions listed bellow are required to be satisfied. Perform the following steps to satisfy the conditions.
- Engine coolant temperature decrease by 55�C (131�F) or more during the time between an ignition switch OFF (after engine warm-up) and the second ignition switch ON.
- A fuel temperature at the second ignition switch ON is 5�C (23�F) or more and less than 35�C (95�F).
- The temperature difference between engine coolant and fuel is 5�C (41�F) or more.
NOTE:
This self-diagnosis is not performed if the distance traveled is extremely short.
1.Turn ignition switch ON.
2.Start engine and warm it up to normal operating temperature.
3.Turn ignition switch OFF and soak the vehicle for at least 12 hours.

CAUTION:
- Never turn ON the ignition switch during soaking.
- Never open the fuel filler cap and perform refueling during soaking.
4.Turn ignition switch ON and wait at least 190 seconds.
5.Check 1st trip DTC.
Is 1st trip DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK SELF-DIAGNOSTIC RESULT

check that DTCs related to the fuel system and the cooling system are not detected.
Is the inspection result normal?
YES- Check the DTC. Refer to "CONSULT Function" CONSULT Function.
NO- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE

1.Erase DTC.
2.Perform DTC Confirmation Procedure again. Refer to "DTC Logic" .
Is the 1st trip DTC P2610 displayed again?
YES- Replace ECM. Refer to "Removal and Installation" Service and Repair.
NO- INSPECTION END