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Home >> Dodge and Ram >> 2003 >> Durango Base, 5.9 Z, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Engine Controls - Self Diagnostics - 4.7L) >> Diagnostic Tests >> DTC P0117: Engine Coolant Temperature Sensor Circuit Low >> Testing

DTC P0117: Engine Coolant Temperature Sensor Circuit Low: Testing

WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn the ignition on, engine not running. With the DRBIII® scan tool, read the ECT voltage. Is the voltage below 1.0 volt? If yes, go to next step. If no, see INTERMITTENT CONDITION  under SELF-DIAGNOSTIC SYSTEM.
  2. Turn the ignition off. Disconnect ECT harness connector. Turn the ignition on, engine not running. With the DRBIII® scan tool, read ECT voltage. Is the voltage above 1.0 volt? If yes, replace the ECT sensor. If no, go to next step.
  3. Turn ignition off. Disconnect PCM harness connectors. Measure the resistance between ground and the (K2) ECT signal circuit at the ECT sensor harness connector. Is the resistance below 100 ohms? If yes, repair the ECT signal circuit for a short to ground. If no, go to next step.
  4. Measure the resistance between the (K2) ECT sensor signal circuit and the (K4) sensor ground circuit at the ECT sensor harness connector. Is the resistance below 100 ohms? If yes, repair the (K2) ECT sensor signal circuit for a short to the (K4) sensor ground circuit. If no, go to next step.
    5. NOTE: Before continuing, disconnect the PCM harness connectors and check the related wiring terminals for corrosion, damage or terminal push out. Repair as necessary.
  5. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See PROGRAMMING .
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