P0117

P0117, P0118 ECT SENSOR

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following 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.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE

1.Turn ignition switch ON and wait at least 5 seconds.
2.Check DTC.
Is DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK ECT SENSOR POWER SUPPLY

1.Disconnect engine coolant temperature (ECT) sensor harness connector.
2.Turn ignition switch ON.
3.Check the voltage between ECT sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- Repair open circuit, short to ground or short to power in harness or connectors.

2. CHECK ECT SENSOR GROUND CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect ECM harness connector.
3.Check the continuity between ECT sensor harness connector and ECM harness connector.





4.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair open circuit, short to ground or short to power in harness or connectors.

3. CHECK ENGINE COOLANT TEMPERATURE SENSOR

Check engine coolant temperature sensor. Refer to "Component Inspection" .
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Replace engine coolant temperature sensor. Refer to "Removal and Installation" Removal And Installation.


Component Inspection


1. CHECK ENGINE COOLANT TEMPERATURE SENSOR

1.Turn ignition switch OFF.
2.Disconnect engine coolant temperature sensor harness connector.
3.Remove engine coolant temperature sensor. Refer to "Removal and Installation" Removal And Installation.





4.Check resistance between engine coolant temperature sensor terminals as per the following.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace engine coolant temperature sensor. Refer to "Removal and Installation" Removal And Installation.