P0196

P0196 EOT SENSOR





Description





The engine oil temperature sensor is used to detect the engine oil temperature. The sensor modifies a voltage signal from the ECM.
The modified signal returns to the ECM as the engine oil temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.

DTC Detection Logic:

DTC Logic

DTC DETECTION LOGIC

NOTE:
If DTC P0196 is displayed with P0197 or P0198, first perform the trouble diagnosis for DTC P0197, P0198. Refer to P0197.






DTC CONFIRMATION PROCEDURE
1.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 more than 11 V at idle.
- GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-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?
YES - P0196.
NO - GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-II
With CONSULT-III
1. Select "DATA MONITOR" mode with CONSULT-III.
2. Check that "COOLAN TEMP/S" indicates above 80�C (176�F).
If it is above 80�C (176�F), go to the following steps.
If it is below 80�C (176�F), warm engine up until "COOLAN TEMP/S" indicates more than 80�C (176�F).
Then perform the following steps.
3. Turn ignition switch OFF and soak the 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-III.
6. Check the following.





If they are within the specified range, perform the following steps.
If they are out of the specified range, soak the 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-III" above.
Is 1st trip DTC detected?
YES - P0196.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection M95. Refer to Ground Inspection in Circuit Inspection.
Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace ground connection.
2.CHECK ENGINE OIL TEMPERATURE SENSOR
Refer to P0196.
Is the inspection result normal?
YES - GO TO 3.
NO - Replace engine oil temperature sensor.
3.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
- INSPECTION END




Component Inspection
1.CHECK ENGINE OIL TEMPERATURE SENSOR
1. Turn ignition switch OFF.
2. Disconnect engine oil temperature sensor harness connector.
3. Remove engine oil temperature sensor.





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





Is the inspection result normal?
YES - INSPECTION END
NO - Replace engine oil temperature sensor.