Nissan Rogue Service Manual: P2610 ECM internal timer

Nissan Rogue Service Manual / Engine / Engine Control System / DTC/Circuit diagnosis / 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 Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen terms (Trouble diagnosis content)	DTC detecting condition
P2610	ECM/PCM INTERNAL ENG OFF TIMER (ECM/PCM internal engine off timer performance)	ECM internal engine off timer is malfunctioning. The time calculated by ECM based on a descent allowance of engine coolant temperatures during ignition switch OFF is extremely shorter than the time counted by the Engine internal OFF timer.

POSSIBLE CAUSE

ECM

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

1.INSPECTION START

It is necessary to erase permanent DTC? YES >> GO TO 4.

NO >> GO TO 2.

2.PRECONDITIONING

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

Turn ignition switch ON and wait at least 190 seconds.
Check 1st trip DTC.

Is 1st trip DTC detected? YES >> Proceed to EC-454, "Diagnosis Procedure".

NO >> INSPECTION END

4.PRECONDITIONING

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

Turn ignition switch ON and wait at least 190 seconds.
Check 1st trip DTC.

Is 1st trip DTC detected? YES >> Proceed to EC-454, "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.

Turn ignition switch ON.
Start engine and warm it up to normal operating temperature.
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.

Turn ignition switch ON and wait at least 190 seconds.
Check 1st trip DTC.

Is 1st trip DTC detected? YES >> Proceed to EC-454, "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 EC-67, "CONSULT Function".

NO >> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

Erase DTC.
Perform DTC Confirmation Procedure again. Refer to EC-453, "DTC Description".

Is the 1st trip DTC P2610 displayed again? YES >> Replace ECM. Refer to EC-499, "Removal and Installation".

NO >> INSPECTION END

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