DTC Troubleshooting
DTC P2183: ECT Sensor 2 Circuit Range/Performance ProblemNOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
- If DTC P0111 is stored at the same time as DTC P2183, troubleshoot DTC P0111 first, then recheck for DTC P2183.
1. Check for poor connections or loose terminals at ECT sensor 1 and ECT sensor
Are the connections and terminals OK?
YES - Go to step 2.
NO - Repair the connectors or terminals, then go to step 27.
2. Turn the ignition switch ON (II).
3. Check for Temporary DTCs or DTCs with the HDS.
Are DTC P1116 and P2183 indicated at the same time?
YES - Go to step 15.
NO - Go to step 4.
4. Start the engine, and let it idle 10 minutes.
5. Check ECT SENSOR2 in the DATA LIST with the HDS.
Is about 140 °F (60 °C) indicated?
YES - Replace ECT sensor 2, then go to step 27.
NO - Go to step 6.
6. Turn the ignition switch OFF.
7. Drain the coolant.
8. Remove ECT sensor 2.
9. Allow ECT sensor 2 to cool to ambient temperature.
10. Note the ambient temperature.
11. Connect ECT sensor 2 to its 2P connector, but do not install it on the engine.
12. Turn the ignition switch ON (II).
13. Note the value of ECT SENSOR2 quickly in the DATA LIST with the HDS.
14. Compare the value of ECT SENSOR2 and the ambient temperature.
Does ECT SENSOR 2 differ 5.4 °F (3 °C) or more?
YES - Replace ECT sensor 2, then go to step 27.
NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the ECM.
15. Start the engine, and let it idle 10 minutes.
16. Check ECT SENSOR 1 in the DATA LIST with the HDS.
Is about 117 °F (47 °C) or less indicated?
YES - Replace ECT sensor 1, then go to step 27.
NO - Go to step 17.
17. Let the engine idle 10 minutes.
18. Check ECT SENSOR2 in the DATA LIST with the HDS.
Is about 140 °F (60 °C) or less indicated?
YES - Replace ECT sensor 2, then go to step 27.
NO - Go to step 19.
19. Turn the ignition switch OFF.
20. Drain the coolant.
21. Remove ECT sensor 1 and ECT sensor 2 .
22. Allow the sensors to cool to ambient temperature.
23. Note the ambient temperature.
24. Connect ECT sensor 1 to its 2P connector, and ECT sensor 2 to its 2P connector, but do not install them on the engine.
25. Note the value of ECT SENSOR 1 and ECT SENSOR 2 quickly in the DATA LIST with the HDS.
26. Compare the value of ECT SENSOR 1 and the ambient temperature, and the value of ECT SENSOR 2 and the ambient temperature individually.
Does one of the sensors differ more than 5.4 °F (3 °C) from the ambient temperature?
YES - Replace the sensor that differed more than 5.4 °F (3 °C) from the ambient temperature, then go to step 27.
NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the ECM.
27. Turn the ignition switch ON (II).
28. Reset the ECM with the HDS.
29. Do the ECM idle learn procedure.
30. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P2183 indicated?
YES - Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the ECM, then go to step 1.
NO - Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.