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DTC P2184: ECT Sensor 2 Circuit Low Voltage Acura RDX I facelift

Testing & Diagnostics 1 illustration ~429 words

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

Scheme 238

Scheme 238: DTC P2184: ECT Sensor 2 Circuit Low Voltage
Scheme 238: DTC P2184: ECT Sensor 2 Circuit Low Voltage
  1. Turn the ignition switch to ON (II).
  2. Check ECT SENSOR 2 in the DATA LIST with the HDS. Is about 356°F (180°C) or more, or 0.08 V or less indicated? YES -Go to step 3. NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 2 and the PCM.
  3. Turn the ignition switch to LOCK (0).
  4. Disconnect the ECT sensor 2 2P connector.
  5. Turn the ignition switch to ON (II).
  6. Check ECT SENSOR 2 in the DATA LIST with the HDS. Is about 356°F(180°C) or more, or 0.08 V or less Indicated? YES -Go to step 7. NO -Go to step 11 .
  7. Turn the ignition switch to LOCK (0).
  8. Jump the SCS line with the HDS.
  9. Disconnect PCM connector A (44P).
  10. Check for continuity between ECT sensor 2 2P connector terminal No. 1 and body ground. Is there continuity? YES -Repair a short in the wire between ECT sensor 2 and the PCM (A33), then go to step 13 . NO -Go to step 18 .
  11. Turn the ignition switch to LOCK (0).
  12. Replace ECT sensor 2 (see «ECT SENSOR 2 REPLACEMENT»(ref-513833-S22968718302012111600000) ).
  13. Reconnect all connectors.
  14. Turn the ignition switch to ON (II).
  15. Reset the PCM with the HDS.
  16. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(ref-513856-S30291526352012111600000) ).
  17. Check for Pending or Confirmed DTCs with the HDS. Is DTC P2184 indicated? YES -Check for poor connections or loose terminals at 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) .
  18. Reconnect all connectors.
  19. Update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-513833-S16680197442012111600000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-513832-S05425928872012111600000) ).
  20. Check for Pending or Confirmed DTCs with the HDS. Is DTC P2184 indicated? YES -Check for poor connections or loose terminals at ECT sensor 2 and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-513832-S05425928872012111600000) ), then recheck. If the PCM was substituted, go to step 1 . NO -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(ref-513833-S05585841922012111600000) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated «DTCS TROUBLESHOOTING»(ref-513833-S32692288912012111600000) .

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