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HOW TO TEST ENGINE COOLANT TEMPERATURE SENSOR. 5 TESTS. P0115 code. 

PistonShack
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Greeting, guys!
I would like to share with you how to Test Engine temperature sensor on your vehicle. If your vehicle has P0115 trouble code: Engine Temperature Circuit Malfunctioning, that is most likely the problem with a collant temperature sensor or wiring down to the sensor. ECM reads input below or above the range 0.14-4.91 V (-40 to 140 C).
This short complete tutorial cover all aspects of testing the ECT sensor as:
1. Test ECT sensor to Ground.
2. Test ECT sensor to open reference voltage.
3. Test ECT signal (performance test).
4. Internal resistance test.
5. Continuity test.
If this video will help someone - my goal was accomplished. Thanks for your interest to my video.
Thanks for tuned in!
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Disclaimer: Due to factors beyond my control I cannot guarantee against improper use or unauthorized modifications of this information. I assume no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk.

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16 июл 2024

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Комментарии : 62   
@hondobarnandez1523
@hondobarnandez1523 Год назад
"We did it. We did it together" Haha... Thanks for building unity with the viewer. *Suscribed*
@JoseRodriguez-lg9yh
@JoseRodriguez-lg9yh 2 года назад
Excellent video…the best one I have ever seen about testing a coolant sensor
@PistonShack
@PistonShack 2 года назад
Glad it helped Jose! What vehicle ETS are your testing?
@myworkshop1737
@myworkshop1737 2 года назад
The best video I've seen about the temperature sensor. thanks a lot
@PistonShack
@PistonShack 2 года назад
Thanks a lot brother for your feedback!
@tonymerle9378
@tonymerle9378 2 года назад
Awesome tutorial! 👍🏼👍🏼👍🏼👍🏼
@PistonShack
@PistonShack 2 года назад
Thank you Tony! Cheers!
@DM-fs9zg
@DM-fs9zg 2 года назад
Great job, thanks!
@ivandjukic2019
@ivandjukic2019 Год назад
Thanks for this video, it helps me to fix problem on opel.
@hayderalameer9092
@hayderalameer9092 5 лет назад
Nice video thanks
@PistonShack
@PistonShack 5 лет назад
You are very welcome, Hayder! Thanks for the interest to my vids.
@robertmendoza243
@robertmendoza243 2 года назад
Awesome video my friend 👍👍
@PistonShack
@PistonShack 2 года назад
Thank you 👍Robert!
@balsonnaoshekpam5680
@balsonnaoshekpam5680 4 года назад
Thanks
@PistonShack
@PistonShack 4 года назад
You Are Very Welcome Balson!
@Mark-wo5ow
@Mark-wo5ow 2 года назад
thanks
@PistonShack
@PistonShack 2 года назад
You're welcome Mark!
@zayturner5075
@zayturner5075 5 месяцев назад
I thought when you test for ground , you hook the multimeter from the ground wire to the ground side of the battery?
@hugoesquergrijalva7671
@hugoesquergrijalva7671 Год назад
because in my vehicle it has 12 volts in the connector of the sensor ect? Ford f150 1998 v6 4.2 .... Thanks
@Ahmadft1
@Ahmadft1 3 года назад
hi , I wonder if you could explain what to do if I fail in any of 5 tests and what does it mean. thanks
@PistonShack
@PistonShack 3 года назад
Hey Ahmad! Well, it depends what test your ECT failed it will give you direction to do future diagnostics. Which one you failed?
@michaelvanna8982
@michaelvanna8982 5 месяцев назад
What caused the P0115 code during your test? Tnx
@PistonShack
@PistonShack 5 месяцев назад
Faulty ECT sensor thrown DTC.
@nemrodm2023
@nemrodm2023 Год назад
do you need to turn the key to ON position for continuity test?
@PistonShack
@PistonShack Год назад
No, you don't have to turn key ON for the continuity test.
@nemrodm2023
@nemrodm2023 Год назад
@@PistonShack Thank you sir
@nemrodm2023
@nemrodm2023 Год назад
@@PistonShack Sir does the CTS has polarity?
@nilhansilva4799
@nilhansilva4799 2 года назад
What's the reason if signal wire shows 5v or more v?
@PistonShack
@PistonShack 2 года назад
How high is your voltage readings?
@Ahmadft1
@Ahmadft1 3 года назад
Hi, What if there is a problem that ecu do not send signal ?
@PistonShack
@PistonShack 3 года назад
ECU itself fails very rare, most likely you have wiring to the ETS or wiring down to the sensor, defective sensor or issue with power and ground to the ECU. What vehicle do you troubleshot?
@Ahmadft1
@Ahmadft1 3 года назад
@@PistonShack 2009 volvo c30 T5, i’m suffering from this problem When i use vida and force fan to run its running and sending You may be right wiring problem, what do you suggest? Thanks
@Ahmadft1
@Ahmadft1 3 года назад
@@PistonShack 2009 volvo c30 t5,
@edwardlara1011
@edwardlara1011 Год назад
Daah!!! Well then you have a possible issue with the ECM or it's circuitry or both, it's not rocket science you moron.
@NeutronX101
@NeutronX101 Год назад
My temperature keeps jumping up and down with barely pressing the gas. I have no codes and replaced a sensor already. Do you think its the wiring to the sensor?
@PistonShack
@PistonShack Год назад
Most likely engine you have some air trapper inside the cooling jacket. I would bleed air from cooling system then check ECT sensor wiring integrity then olnly replace temp sensor.
@NeutronX101
@NeutronX101 Год назад
@@PistonShack thanks. I will check wiring tomorrow and try to bleed it again.
@NeutronX101
@NeutronX101 Год назад
@@PistonShack yup there was a short to ground in the connector.
@geoepi321975
@geoepi321975 4 года назад
At open reference I have 12 volts is this normal
@PistonShack
@PistonShack 4 года назад
12 volts at reference wire circuit tells about poor ground at the sensor or ecu shared ground. Sorry for late reply.
@PistonShack
@PistonShack 4 года назад
Bad ECU ground will raise voltage on all 5v reference circuits. 5v ref is a blood life of engine computer.
@geoepi321975
@geoepi321975 4 года назад
@@PistonShack hi I Am sorry I have 12 volts at thermal switch, and 5 volts at sensor itself but fan is not engaging
@PistonShack
@PistonShack 4 года назад
@@geoepi321975 Hi brotha! What kinda vehicle do you have? I would check: -continuity and resistance at the cooling fan motor; -ground and power to the motor; -check load and control sides of the fan relay if power is missing; - control side signal, check 5v ref at the sensor, unplug sensor (thermistor) Let me know if you have any questions. Cheers)
@Rockysvideostation
@Rockysvideostation 4 года назад
All tested ok. Replaced sensor and cooling T-stat and I am still getting P0115! Don't know why??
@PistonShack
@PistonShack 4 года назад
Hi Rakesh, well what is a resistance on a temp sensor when engine is hot. Could be defective sensor.
@Rockysvideostation
@Rockysvideostation 4 года назад
@@PistonShack I have no idea! But my temp gauge is right in the middle and I have good heat now!
@PistonShack
@PistonShack 4 года назад
@@Rockysvideostation Seems you nailed it down.
@Rockysvideostation
@Rockysvideostation 4 года назад
@@PistonShack Ya but my engine light still on!
@PistonShack
@PistonShack 4 года назад
@@Rockysvideostation Did you clear code from ECU already?
@guesswhomartin9249
@guesswhomartin9249 2 года назад
While your video is ok... but in your teaching, you never explained which wire is your ground. What do we do when we have dummies like me out here ? Also, #5, you only test the ground wire ( which ever one that was ), So I would assume you do the same thing with the other wire.
@PistonShack
@PistonShack 2 года назад
Hey Martin. It doesn't really matter. One of the wires will be GROUND. It depends from circuit design of your vehicle. You can determent which wire which or just check wiring diagram. But thank for sharing your point! Cheers.
@lanazaakat9466
@lanazaakat9466 3 года назад
What are you saying ??
@PistonShack
@PistonShack 3 года назад
Good point. Thanks for 👀
@johncameron4172
@johncameron4172 4 года назад
Your voice goes up and down. I’m guessing English isn’t your native tongue. Being from the southern US you are killing me. I’m not saying I am any better and I can barely speak Spanish. So, you’re knowledge of the English language is extensive but OMG you’re killing me man.
@PistonShack
@PistonShack 4 года назад
Thanks for watching John! That's interesting to know other people opinion and impression)
@edwardlara1011
@edwardlara1011 Год назад
Can you change the way you talk dumbass? If you don't like the way he talks don't watch his videos simple as that. You think everyone likes your southern twang? How can you possibly expect him to change his accent you moron? You are one dumbass southerner.
@ryszardjacekrusniak7993
@ryszardjacekrusniak7993 2 года назад
TEST nr. 2 what you're connecting to what?????? very lousy info.
@satuldeprosti
@satuldeprosti 7 месяцев назад
Hello! My sensor is new( hella) and at cold water resistanse is low and at hot water resistence is high...is opposite that you describe...what s the probleme? I test another sensor new, and the same store
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