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DTC P2184: ECT Sensor 2 Circuit Low Voltage Honda Ridgeline I

Testing & Diagnostics 1 illustration ~432 words

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

Scheme 173

Scheme 173: DTC P2184: ECT Sensor 2 Circuit Low Voltage
Scheme 173: DTC P2184: ECT Sensor 2 Circuit Low Voltage
  1. Turn the ignition switch 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 OFF.
  4. Disconnect the ECT sensor 2 2P connector.
  5. Turn the ignition switch 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 OFF.
  8. Jump the SCS line with the HDS.
  9. Disconnect PCM connector A (49P).
  10. Check for continuity between ECT sensor 2 2P connector terminal No. 1 and body ground. Is there continuity? YES - Repair short in the wire between ECT sensor 2 and the PCM (A21), then go to step 13 . NO - Go to step 18 .
  11. Turn the ignition switch OFF.
  12. Replace ECT sensor 2 (see «ECT SENSOR 2 REPLACEMENT»(ref-299652-S05094612912008092500000) ).
  13. Reconnect all connectors.
  14. Turn the ignition switch ON (II).
  15. Reset the PCM with the HDS.
  16. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(ref-219960-S21279730262006021600000) ).
  17. Check for Temporary DTCs or 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 Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting.
  18. Reconnect all connectors.
  19. Update the PCM if it does not have the latest software (see «PCM UPDATING AND SUBSTITUTION FOR TESTING»(ref-219956-S29187290912006021600000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-219956-S20631232652006021600000) ).
  20. Check for Temporary DTCs or 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-219956-S20631232652006021600000) ), 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-299652-S28764766372008092500000) ). If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting.

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