Engine Controls (For California)

DTC P0196 EOT SENSOR





Component 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.





[Reference data]






CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.




On Board Diagnosis Logic

NOTE:
If DTC P0196 is displayed with P0197 or P0198, first perform the trouble diagnosis for DTC P0197 or
P0198. Engine Controls (For California) Engine Controls (For California) Engine Controls (For California).









DTC Confirmation Procedure

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.

WITH CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and let it idle for 5 minutes and 10 seconds.
4. Check 1st trip DTC.
If 1st trip DTC is detected, go to SEE Diagnosis Procedure.
If 1st trip DTC is not detected, go to following steps.
5. Select "DATA MONITOR" mode with CONSULT-III.
6. Check that "COOLAN 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 "COOLAN TEMP/S" indicates more than 70�C
(158�F). Then go to the following steps.
7. Turn ignition switch OFF and soak the vehicle at cool place.
8. Turn ignition switch ON.

NOTE:
Do not turn ignition switch OFF until step 12
9. Select "DATA MONITOR" mode with CONSULT-III.
10. Check the following.






If they are within the specified range, go to following steps.
If they are out of the specified range, soak the vehicle to met the above conditions. Then go to 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.
11. Start engine and let it idle for 5 minutes.
12. Check 1st trip DTC.
13. If 1st trip DTC is detected, go to SEE Diagnosis Procedure.

WITH GST
Follow the procedure "WITH CONSULT-III" above.




Diagnosis Procedure
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.





2. Loosen and retighten ground screws on the body. For California.
- Arrow Indicates Vehicle Front
- Body ground (1)
OK or NG
OK - GO TO 2.
NG - Repair or replace ground connections.
2.CHECK ENGINE OIL TEMPERATURE SENSOR
SEE Component Inspection.
OK or NG
OK - GO TO 3.
NG - Replace engine oil temperature sensor. Component.
3.CHECK INTERMITTENT INCIDENT
Engine Controls (For California).
- INSPECTION END




Component Inspection

ENGINE OIL TEMPERATURE SENSOR





1. Check resistance between engine oil temperature sensor terminals 1 and 2 as shown in the figure.





[Reference data]






2. If NG, replace engine oil temperature sensor. Component.