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The ECT sensor monitors engine coolant temperature and transmits this data to the PCM or Powertrain Control Module, which utilizes it to change ignition timing, fuel injection, and many …

Detailed information on troubleshooting and repairing a p0117 vehicle trouble code which refers to a low input in the engine coolant temperature (ECT) circuit. Also includes links to relevant …

In order to convert the ECT resistance variation to voltage variation, which is further processed by the ECU, the ECT sensor is connected in a circuit typically supplied with a reference voltage of …

Feb 18, 2025 · Learn how to identify, diagnose, and replace your faulty ECT sensor. Save time and money with these expert tips!

Jun 17, 2025 · This article provides an in-depth look at how ECT sensors work and where they’re used.

Measure and note the ECT sensor resistance, then compare the cold and hot ECT sensor resistance measurements with the accompanying chart. Replace the ECT sensor if the …

Nov 17, 2022 · This article provides a brief overview of an engine coolant temperature sensor wiring diagram and what each part of the diagram is responsible for. The engine coolant …

Oct 11, 2025 · From coolant to control: the ECT sensor feeds temperature truth to the ECU, which tunes fuel, spark, and cooling strategy. The ECT sensor tells the ECU how warm the engine …

During cold engine operation, the ECT sensor plays a major role in determining how much fuel the engine needs to operate smoothly. The operation of the ECT circuit is fairly simple. As the …