( TF09EABK72100090117FAAT00 )
DTC Troubleshooting: P0117 (6)
DTC P0117:
 ECT Sensor 1 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 to ON (II).
  1. Check ECT SENSOR 1 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 1 and the ECM/PCM.■
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect the ECT sensor 1 2P connector.
  1. Turn the ignition switch to ON (II).
  1. Check ECT SENSOR 1 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 to LOCK (0).
  1. Jump the SCS line with the HDS.
  1. Disconnect ECM/PCM connector B (49P).
  1. Check for continuity between ECT sensor 1 2P connector terminal No. 1 and body ground.
Is there continuity?
YES -
Repair short in the wire between ECT sensor 1 and the ECM/PCM (B24), then go to Step 13 .
NO -
Go to Step 18 .
  1. Turn the ignition switch to LOCK (0).
  1. Reconnect all connectors.
  1. Turn the ignition switch to ON (II).
  1. Reset the ECM/PCM with the HDS.
  1. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0117 indicated?
YES -
Check for poor connections or loose terminals at ECT sensor 1 and the ECM/PCM, 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 P0117 indicated?
YES -
Check for poor connections or loose terminals at ECT sensor 1 and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM, then recheck. If the ECM/PCM was substituted, go to Step 1 .
NO -
If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.■