Nissan Murano: Dtc/circuit Diagnosis / P0196 Eot Sensor

DTC Description

DTC DETECTION LOGIC

1. Rationally incorrect voltage from the sensor is sent to ECM, compared with the voltage signals from EOT sensor and intake air temperature sensor.

2. The comparison result of signals transmitted to ECM from each temperature sensor (IAT sensor, ECT sensor, FTT sensor, and EOT sensor) shows that the signal voltage of the EOT sensor is higher/lower than that of other temperature sensors when the engine is started with its cold state.

POSSIBLE CAUSE

P0196 - 1

• Harness or connectors (The EOT sensor circuit is open or shorted)

• EOT sensor

P0196 - 2

• Harness or connectors (High or low resistance in the EOT sensor circuit)

• EOT sensor

FAIL-SAFE

CHECK DTC PRIORITY

If DTC P0196 is displayed with another DTC P0197 or P0198, first perform the trouble diagnosis for DTC P0197 or P0198.

Is applicable DTC detected?

Perform diagnosis of applicable.

• DTC P0197: Refer to DTC Description.

• DTC P0198: Refer to DTC Description.

GO TO 2.

INSPECTION START

Is it necessary to erase permanent DTC?

GO TO 7.

GO TO 3.

PRECONDITIONING

If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following procedure before conducting the next test.

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 11 V or more at idle.

GO TO 4.

PERFORM DTC CONFIRMATION PROCEDURE FOR MULFUNCTION 1-I

1. Start engine and warm it up to normal operating temperature.

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

3. Turn ignition switch ON.

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

5. Start engine and let it idle for 5 minutes and 10 seconds.

6. Check 1st trip DTC.

Is 1st trip DTC detected?

Proceed to Diagnosis Procedure.

GO TO 5.

PERFORM DTC CONFIRMATION PROCEDURE FOR MULFUNCTION 1-II

With CONSULT

1. Select “DATA MONITOR” mode with CONSULT.

2. Check that “COOLANT TEMP/S” indicates above 70°C (158°F).

   If it is above 70°C (158°F), go to the following steps.

   If it is below 70°C (158°F), warm engine up until “COOLANT TEMP/S” indicates more than 70°C (158°F). Then perform the following steps.

3. Turn ignition switch OFF and soak the Nissan Murano vehicle in a cool place.

4. Turn ignition switch ON.

   NOTE:

   Do not turn ignition switch OFF until step 8.

5. Select “DATA MONITOR” mode with CONSULT.

6. Check the following.

   COOLANT TEMP/S	Below 40°C (104°F)
   INT/A TEMP SE	Below 40°C (104°F)
   Difference between “COOLANT TEMP/S” and “INT/A TEMP SE”	Within 6°C (11°F)

   If they are within the specified range, perform the following steps.

   If they are out of the specified range, soak the Nissan Murano vehicle to meet the above conditions. Then perform the following steps.

   NOTE:

   • Do not turn ignition switch OFF.

   • If it is supposed to need a long period of time, do not deplete the battery.

7. Start engine and let it idle for 5 minutes.

8. Check 1st trip DTC.

With GST

Follow the procedure “With CONSULT” above.

Is 1st trip DTC detected?

Proceed to Diagnosis Procedure.

GO TO 6.

CHECK ENGINE OIL TEMPERATURE (EOT) SENSOR

1. Turn ignition switch OFF.

2. Disconnect EOT sensor harness connector.

3. Remove EOT sensor. Refer to Component Parts Location.

4. Check resistance between EOT sensor terminals by heating with hot water as shown in the figure.

   

   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?

INSPECTION END

Proceed to Diagnosis Procedure.

PRECONDITIONING

If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following procedure before conducting the next test.

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, 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 8.

PERFORM DTC CONFIRMATION PROCEDURE 2

1. Move the Nissan Murano 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).

2. Turn ignition switch OFF and leave the Nissan Murano vehicle for 12 hours.

   CAUTION:

   Never turn ignition switch ON during this procedure.

   NOTE:

   The Nissan Murano vehicle must be cooled with the hood open.

3. Start engine and let it idle for 5 minutes or more.

   CAUTION:

   Never turn ignition switch OFF during idling.

4. Check 1st trip DTC.

Is 1st trip DTC detected?

Proceed to Diagnosis Procedure.

To check malfunction symptom before repair: Refer to Intermittent Incident.

Confirmation after repair: INSPECTION END

CHECK DTC PRIORITY

If DTC P0196 is displayed with another DTC P0197 or P0198, first perform the trouble diagnosis for DTC P0197 or P0198.

Is applicable DTC detected?

Perform diagnosis of applicable.

• DTC P0197: Refer to DTC Description.

• DTC P0198: Refer to DTC Description.

GO TO 2.

CHECK ENGINE OIL TEMPERATURE SENSOR

Check engine oil temperature sensor. Refer to Component Inspection.

Is the inspection result normal?

NSPECTION END

Replace engine oil temperature sensor. Refer to Component Parts Location.

CHECK ENGINE OIL TEMPERATURE SENSOR

1. Turn ignition switch OFF.

2. Disconnect engine oil temperature sensor harness connector.

3. Remove engine oil temperature sensor. Refer to Component Parts Location.

4. Check resistance between engine oil temperature sensor terminals by heating with hot water as shown in the figure.

   

   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?

INSPECTION END

Replace engine oil temperature sensor. Refer to Component Parts Location.