DTC P2183: ECT Sensor 2 Circuit Range/Performance Problem Acura RDX I facelift

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

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 terminals, then go to step 22 .
2. Turn the ignition switch to ON (II).
3. Check for Pending or Confirmed DTCs with the HDS. Are DTC P1116 and P2183 indicated at the same time? YES -Go to step 12 . 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 124°F (51°C) or less indicated? YES -Replace ECT sensor 2 (see «ECT SENSOR 2 REPLACEMENT»(ref-513833-S22968718302012111600000) ), then go to step 22 . NO -Go to step 6.
6. Turn the ignition switch to LOCK (0).
7. Allow ECT sensor 2 to cool to ambient temperature.
8. Note the ambient temperature.
9. Turn the ignition switch to ON (II).
10. Note the value of ECT SENSOR 2 quickly in the DATA LIST with the HDS.
11. 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 (see «ECT SENSOR 2 REPLACEMENT»(ref-513833-S22968718302012111600000) ), then go to step 22 . 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 PCM.
12. Start the engine, and let it idle for 10 minutes.
13. Check ECT SENSOR 1 in the DATA LIST with the HDS. Is about 127°F (53°C) or less indicated? YES -Replace ECT sensor 1 (see «ECT SENSOR 1 REPLACEMENT»(ref-513833-S15821966552012111600000) ), then go to step 22 . NO -Go to step 14.
14. Let the engine idle for 10 minutes.
15. Check ECT SENSOR 2 in the DATA LIST with the HDS. Is about 124°F (51°C) or less indicated? YES -Replace ECT sensor 2 (see «ECT SENSOR 2 REPLACEMENT»(ref-513833-S22968718302012111600000) ), then go to step 22 . NO -Go to step 16.
16. Turn the ignition switch to LOCK(0).
17. Allow the sensors to cool to ambient temperature.
18. Note the ambient temperature.
19. Turn the ignition switch to ON (II).
20. Note the value of ECT SENSOR 1 and ECT SENSOR 2 quickly in the DATA LIST with the HDS.
21. 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 22. 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 PCM.
22. Turn the ignition switch to ON (II).
23. Reset the PCM with the HDS.
24. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(ref-513856-S30291526352012111600000) ).
25. Check for Pending or Confirmed 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 PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated «DTCS TROUBLESHOOTING»(ref-513833-S32692288912012111600000) .