P0117

Tests 1 - 2:

Tests 3 - 8:

Test 9:

SYMPTOM
P0117 - ENGINE COOLANT TEMPERATURE (ECT) SENSOR VOLTAGE TOO LOW

WHEN MONITORED
With the ignition ON and battery voltage greater than 10.4 volts.

SET CONDITION
The Engine Coolant Temperature Sensor circuit voltage at the ECM goes below 0.8 volt for more than 2 seconds.

POSSIBLE CAUSES
- ECT sensor ground circuit shorted to ground
- ECT sensor signal circuit shorted to ground
- ECT sensor wiring harness intermittent defect
- ECT sensor wiring harness observable defect
- ECM (ECT sensor voltage too low)
- ECT sensor (below 100k ohms)
- ECT sensor (between 175 and 244k ohms)