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.
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.
DTC Confirmation Procedure
1. INSPECTION START
Is it necessary to erase permanent DTC?
YES- GO TO 6.
NO- GO TO 2.
2. PRECONDITIONING
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.
- GO TO 3.
3. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A-1
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- Go to .
NO- GO TO 4.
4. PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A-2
With CONSULT
1.Select "DATA MONITOR" mode with CONSULT.
2.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.
3.Turn ignition switch OFF and soak the vehicle at 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.
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.
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?
YES- Go to .
NO- GO TO 5.
5. PERFORM OVERALL FUNCTION CHECK (FOR MALFUNCTION B)
Perform overall function check. .
NOTE:
Use the overall function check to check the overall function of the EOT sensor circuit. During this check, a 1st trip DTC might not be confirmed.
Is the inspection result normal?
YES- INSPECTION END
NO- Go to .
6. PRECONDITIONING
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, 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 more than 11 V at idle.
- GO TO 7.
7. PERFORM DTC CONFIRMATION PROCEDURE B
1.Start engine and let it idle for 60 minutes.
2.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).
3.Turn ignition OFF and soak the vehicle for 12 hours.
CAUTION:
Never turn ignition switch ON during soaking.
NOTE:
The vehicle must be cooled with the food open.
4.Start engine and let it idle for 5 minutes or more.
5.Check 1st trip DTC.
Is 1st trip DTC detected?
YES- Go to .
NO- INSPECTION END
Overall Function Check
1. CHECK ENGINE OIL TEMPERATURE (EOT) SENSOR
1.Turn ignition switch OFF.
2.Disconnect EOT sensor harness connector.
3.Remove EOT sensor. Component.
4.Check resistance between EOT sensor terminals by heating with hot water as shown in the figure.
Is the inspection result normal?
YES- GO TO 2.
NO- Go to .
2. CHECK INTERMITTENT INCIDENT
Check intermittent incident. For California.
Is the inspection result normal?
YES- INSPECTION END
NO- Go to .
Diagnosis Procedure
1. CHECK GROUND CONNECTIONS
1.Turn ignition switch OFF.
2.Loosen and retighten ground screws on the body.
For California.
-White 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
.
OK or NG
OK- GO TO 3.
NG- Replace engine oil temperature sensor.
3. CHECK INTERMITTENT INCIDENT
Refer to 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.
2.If NG, replace engine oil temperature sensor.