DTC Confirmation Procedure
WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECTION START
Is it necessary to erase permanent DTC?
YES
GO TO 3.
NO
GO TO 2.
- CHECK ENGINE COOLANT TEMPERATURE (ECT) SENSOR
- Turn ignition switch OFF.
- Disconnect ECT sensor harness connector.
- Remove ECT sensor. Refer to Removal and Installation .
- Check resistance between ECT sensor terminals by heating with hot water as shown in the figure below.
Terminals
Condition
Resistance (kΩ)
1 and 2
Temperature [°C (°F)]
20 (68)
2.37 - 2.63
50 (122)
0.68 - 1.00
90 (194)
0.236 - 0.260
Is the inspection result normal?
YES
INSPECTION END
NO
Proceed to Diagnosis Procedure .
- PRECONDITIONING
If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following procedure before conducting the next test.
- 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, do not add fuel.
- Before performing the following procedure, check that fuel level is between 1/4 and 4/4.
- Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.
GO TO 4.
- PERFORM DTC CONFIRMATION PROCEDURE
- Move the vehicle to a cool place.NOTE: Cool the vehicle in an environment of ambient air temperature between -10°C (14°F) and 35°C (95°F).
- Turn ignition switch OFF and leave the vehicle for 12 hours.CAUTION: Never turn ignition switch ON during this procedure.NOTE: The vehicle must be cooled with the hood open.
- Start engine and let it idle for 20 minutes or more.CAUTION: Never turn ignition switch OFF during idling.
- Check 1st trip DTC.
Is 1st trip DTC detected?
YES
Proceed to Diagnosis Procedure .
NO
To check malfunction symptom before repair: Refer to Intermittent Incident .
NO
Confirmation after repair: INSPECTION END
- Move the vehicle to a cool place.