P1116
DTC P1116: ECT Sensor Performance ProblemNOTE: If DTC P0111 is stored at the same time as DTC P1116, troubleshoot DTC P0111 first, then recheck for DTC P0116.
1. Check for poor connections or loose terminals at the ECT sensor.
Are the connections and terminals OK?
YES - Go to step 2.
NO - Repair the connections or terminals, then go to step 13.
2. Start the engine, and let it idle 10 minutes.
3. Check the ECT SENSOR in the DATA LIST with the HDS.
Is about 129°F (54°C) or less, or 1.54 V or higher indicated?
YES - Replace the ECT sensor, then go to step 13.
NO - Go to step 4.
4. Turn the ignition switch OFF.
5. Drain the coolant.
6. Remove the ECT sensor.
7. Allow the ECT sensor to cool to 77°F (25°C).
8. Note the outside temperature.
9. Connect the ECT sensor to the 2P connector, but do not install the sensor on the engine.
10. Turn the ignition switch ON (II).
11. Note the value of ECT SENSOR quickly in the DATA LIST with the HDS.
12. Compare the ECT SENSOR and the outside temperature.
Does the ECT SENSOR differ 5.5°F (3°C) or more?
YES - Replace the ECT sensor, then go to step 13.
NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the ECT sensor and the ECM/PCM.
13. Turn the ignition switch ON (II).
14. Reset the ECM/PCM with the HDS.
15. Do the ECM/PCM idle learn procedure.
16. Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P0116 is indicated, check for poor connections or loose terminals at ECT sensor and the ECM/PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO - Troubleshooting is complete.