Nissan Juke Service and Repair Manual : P0115 ECT sensor

DTC Logic

DTC DETECTION LOGIC

Diagnosis Procedure


Diagnosis Procedure

1.CHECK GROUND CONNECTIONS

1. Turn ignition switch OFF.

2. Check ground connection E38. Refer to Ground inspection in GI-44, "Circuit Inspection".

Is the inspection result normal? YES >> GO TO 2.

NO >> Repair or replace ground connection.

2.CHECK ENGINE COOLANT TEMPERATURE SENSOR SUPPLY CIRCUIT

1. Disconnect engine coolant temperature sensor harness connector.

2. Turn ignition switch ON.

3. Check the voltage between engine coolant temperature sensor connector and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 3.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

3.CHECK ENGINE COOLANT TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between engine coolant temperature sensor harness connector and ECM harness connector.

4. Also check harness for short to ground and short to power.


4. Also check harness for short to ground and short to power.

Is the inspection result normal? YES >> GO TO 4.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

4.CHECK ENGINE COOLANT TEMPERATURE SENSOR

Refer to EC-908, "Component Inspection".

Is the inspection result normal? YES >> GO TO 5.

NO >> Replace engine coolant temperature sensor.

5.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident", ???INCIDENT SIMULATION TESTS??? and ???GROUND INSPECTION???.

>> INSPECTION END

Component Inspection

1.CHECK ENGINE COOLANT TEMPERATURE SENSOR

Check resistance between engine coolant temperature sensor terminals 2 and 3 under the following conditions.

Is the inspection result normal?


Is the inspection result normal? YES >> INSPECTION END

NO >> Replace Engine coolant temperature sensor.

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    Other materials:

    Recommended fluids and lubricants
    Fluids and Lubricants *1: For additional information, see “SAE Viscosity Number”. *2: Use Genuine NISSAN Engine Coolant or equivalent in its quality, in order to avoid possible aluminium corrosion within the engine cooling system caused by the use of non-genuine engine coolant. Note that any ...

    Wheels
    Wash the wheels when washing the vehicle to maintain their appearance. • Clean the inner side of the wheels when the wheel is changed or the underside of the vehicle is washed. • Inspect wheel rims regularly for dents or corrosion. Such damage may cause loss of pressure or poor seal at the tir ...

    Back door opener switch
    Component Function Check 1.CHECK FUNCTION 1. Select “TRUNK” of “BCM” using CONSULT-III. 2. Select “TRNK OPNR SW” in “DATA MONITOR” mode. 3. Check that the function operates normally according to the following conditions. Is the inspection result normal? YES >> Back door opener switch ...