How to Test Engine Coolant Temperature Sensor

Engine coolant temperature sensor circuit explained. The engine coolant temperature sensor is a variable resistor known as a thermistor. The PCM runs multiple tests on the sensor circuit to check for shorts and opens. I refer to a wiring diagram to create both faults while monitoring the sensor signal with a voltmeter and a scantool.

[@u.e.3769]

One of the best explanations Greetings from Germany😊

[@MRDIAGNOSTECH]

Thanks! 😃

[@cristi9944]

A very precise and detailed explanation, thank you for deciding to share your experience. I am happy that there is still someone who also thinks about beginners. Thank you very much

[@MRDIAGNOSTECH]

You're very welcome!

[@1231234abcab]

Good refresher course 👍🏽

[@MRDIAGNOSTECH]

Yes, thanks

[@patrickmoran6004]

The best explanation I've seen on TH-cam. Thank you.

[@johnngo341]

You have a hell of a way of teaching. Thank you and keep up the good work

[@geoff3172]

Great video, many thanks for posting

[@Rekani-sq5nl]

Thanks for explanation, well done

[@journdiag7621]

Thank you for sharing your knowledge

[@sheerwillsurvival2064]

Great video please keep them coming. Old school technician . Can you do some on pull up and pull down circuits and the difference in ground side switched and positive side switch. Little lost. Thanks

[@Grunter123]

What a great explanation. Thanks for sharing.

[@MAZMSPBRA]

Amazing! Another great video for beginners and advanced technicians! Keep up the great work! I may have to enroll to your classes for a refreshment soon!

[@patrickmoran6004]

Brilliant video.
Could you do one on the camshaft sensor.

[@abdussamaddhodhat4551]

Thank you sir very very good explanation

[@benjaminlevi7792]

Great information. Thank you 🙏🙏

[@ThunderbirdRocket]

Nice 👍🏼 ! 🔥 🧰
Thanks mate !

[@manoramachandran9192]

❤❤❤❤❤❤

[@HS-fw2ed]

Very good job! Why doesn't the resistor inside the PCM create a voltage drop? Why, after that resistance, is the voltage still 5 volts?

[@MRDIAGNOSTECH]

When it is unplugged, the circuit is incomplete, and voltage is not used.

[@HS-fw2ed]

Thanks! 🙏

[@ericornelas5488]

GREAT VIDEO!!