P1116

DTC P1116: Engine Coolant Temperature Circuit Performance at Engine Soaking

System Description
ECM monitors ECT sensor to ensure that temperature has dropped to environmental temperature. After 5 hours (using timer module) from engine stop, the system wakes up ECM and measures ECT and IAT signal. If difference between ECT and IAT is more than the criteria, ECM will set DTC.

Wiring Diagram

Wiring Diagram:

DTC Detecting Condition and Trouble Area

DTC Detecting Condition And Trouble Area:

DTC Confirmation Procedure

WARNING:
- When performing a road test, select a place where there is no traffic or possibility of a traffic accident and very careful during testing to avoid occurrence of an accident.
- Road test should be carried out with 2 persons, a driver and a tester, on a level road.

1. With ignition switch turned OFF, connect scan tool.
2. Turn ignition switch to ON position, clear DTC if any.
3. Start engine and warm up to normal operating temperature.
4. Drive vehicle more than 37 mph (60 km/h) for 15 min.
5. Stop vehicle and run engine at idle speed for 1 min.
6. Turn ignition switch to OFF position and leave for 6 hours.
7. Check DTC and pending DTC by using scan tool.

DTC Troubleshooting

NOTE: Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to Precautions for DTC Troubleshooting

Step 1-5: