## DTC Troubleshooting: P0117 (6-1)

DTC P0117 (6-1): | ECT Sensor Circuit Low Voltage

1. | Turn the ignition switch ON (II).

2. | Check the ECT with the HDS or the scan tool. Is 150°C (302°F) or higher, or about 0 V indicated? YES - Go to 3. NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the ECT sensor and at the ECM/PCM.n

3. | Disconnect the ECT sensor 2P connector.

4. | Check the ECT with the HDS or the scan tool. Is 150°C (302°F) or higher, or about 0 V indicated? YES - Go to 5. NO - Replace the ECT sensor.n

5. | Turn the ignition switch OFF.

6. | Disconnect ECM/PCM connector B (24P).

7. | Check for continuity between the ECT sensor 2P connector terminal No. 1 and body ground. Is there continuity? YES - Repair short in the wire between the ECM/PCM (B8) and the ECT sensor.n NO - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/ PCM.n