DTC Troubleshooting
DTC Troubleshooting: P2183
DTC P2183: ECT Sensor 2 Circuit Range/Performance Problem
NOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information. Initial Inspection and Diagnostic Overview
- 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 2.
Are the connections and terminals OK?
YES - Go to step 2.
NO - Repair the connections or the terminals, then go to step 27.
2. Turn the ignition switch to 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 for 10 minutes.
5. Check ECT SENSOR 2 in the DATA LIST with the HDS.
Is about 140 °F (60 °C) indicated?
YES - Replace ECT sensor 2, ECT Sensor 2 Replacement then go to step 27.
NO - Go to step 6.
6. Turn the ignition switch to LOCK (0).
7. Drain the coolant. Service and Repair
8. Remove ECT sensor 2. ECT Sensor 2 Replacement
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 radiator.
12. Turn the ignition switch to ON (II).
13. Note the value of ECT SENSOR 2 quickly in the DATA LIST with the HDS.
14. Compare the value of ECT SENSOR 2 and the ambient temperature.
Does ECT SENSOR 2 differ 5.4 °F (3 °C) or more from the ambient temperature?
YES - Replace ECT sensor 2, ECT Sensor 2 Replacement 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 for 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, ECT Sensor 1 Replacement then go to step 27.
NO - Go to step 17.
17. Let the engine idle 10 minutes.
18. Check ECT SENSOR 2 in the DATA LIST with the HDS.
Is about 140 °F (60 °C) or less indicated?
YES - Replace ECT sensor 2, ECT Sensor 2 Replacement then go to step 27.
NO - Go to step 19.
19. Turn the ignition switch to LOCK (0).
20. Drain the coolant. Service and Repair
21. Remove ECT sensor 1 ECT Sensor 1 Replacement and ECT sensor 2. ECT Sensor 2 Replacement
22. Allow the sensors to cool to ambient temperature.
23. Note the ambient temperature.
24. Connect the ECT sensors to their 2P connectors, but do not install them.
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.
- ECT sensor 1 ECT Sensor 1 Replacement
- ECT sensor 2 ECT Sensor 2 Replacement
After replacing the sensor, 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 to ON (II).
28. Reset the ECM with the HDS.
29. Do the ECM idle learn procedure. 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.