DTC Troubleshooting: P2184 (192)
DTC P2184:
 ECT Sensor 2 Circuit Low Voltage
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
  1. Turn the ignition switch ON (II).
  1. Check ECT SENSOR 2 in the DATA LIST with the HDS.
Is about 180 °C (356 °F) 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 ECM.■
  1. Turn the ignition switch OFF.
  1. Disconnect ECT sensor 2 2P connector.
  1. Turn the ignition switch ON (II).
  1. Check ECT SENSOR 2 in the DATA LIST with the HDS.
Is about 180 °C (356 °F) or more, or 0.08 V or less indicated?
YES -
Go to Step 7 .
NO -
Go to Step 11 .
  1. Turn the ignition switch OFF.
  1. Jump the SCS line with the HDS.
  1. Disconnect ECM connector A (44P).
  1. Check for continuity between ECT sensor 2 2P connector terminal No. 2 and body ground.
Is there continuity?
YES -
Repair short in the wire between ECT sensor 2 and the ECM (A33), then go to Step 13 .
NO -
Go to Step 18 .
  1. Turn the ignition switch OFF.
  1. Reconnect all connectors and the battery.
  1. Turn the ignition switch ON (II).
  1. Reset the ECM with the HDS.
  1. 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 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.■
  1. Reconnect all connectors.
  1. 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 ECM. If the ECM was updated, substitute a known-good ECM, then recheck. If the ECM was substituted, go to Step 1 .
NO -
If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.■