DTC P2183: ECT Sensor 2 Circuit Range/Performance Problem
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
- If DTC P0111 is stored at the same time as DTC P2183, troubleshoot DTC P0111 first, then recheck for DTC P2183.
- 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 22.
- Turn the ignition switch to ON (II).
- Check for Pending or Confirmed or DTCs with the HDS.
Are DTC P1116 and P2183 indicated at the same time?
YES -Go to step 12.
NO -Go to step 4.
- Start the engine, and let it idle for 10 minutes.
- Check ECT SENSOR 2 in the DATA LIST with the HDS.
Is about 140°F (60°C) indicated?
YES -Replace ECT sensor 2 (see ECT SENSOR 2 REPLACEMENT ), then go to step 22.
NO -Go to step 6.
- Turn the ignition switch to LOCK (0).
- Allow ECT sensor 2 to cool to ambient temperature.
- Note the ambient temperature.
- Turn the ignition switch to ON (II).
- Quickly note the value of ECT SENSOR 2 in the DATA LIST with the HDS.
- 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 ), 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 ECM.
- Start the engine, and let it idle for 10 minutes.
- 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 (see ECT SENSOR 1 REPLACEMENT ), then go to step 22.
NO -Go to step 14.
- Let the engine idle 10 minutes.
- 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 (see ECT SENSOR 2 REPLACEMENT ), then go to step 22.
NO -Go to step 16.
- Turn the ignition switch to LOCK (0).
- Allow the sensors to cool to ambient temperature.
- Note the ambient temperature.
- Turn the ignition switch to ON (II).
- Quickly note the value of ECT SENSOR 1 and ECT SENSOR 2 in the DATA LIST with the HDS.
- 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 (see ECT SENSOR 1 REPLACEMENT )
- ECT sensor 2 (see ECT SENSOR 2 REPLACEMENT )
After replacing the sensor, 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 ECM.
- Turn the ignition switch to ON (II).
- Reset the ECM with the HDS.
- Do the ECM idle learn procedure (see ECM IDLE LEARN PROCEDURE ).
- Check for Pending or Confirmed 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 Pending or Confirmed or DTCs are indicated, go to the INDICATED DTC'S TROUBLESHOOTING .