How To Test A Coolant Temp Sensor

How To Test A Coolant Temp Sensor. 0 ohm (circuit diagram required for pin assignment on control unit). When the engine reaches operating temperature, insert the positive probe directly into the coolant.

Coolant Temperature Sensor Test AxleAddict
Coolant Temperature Sensor Test AxleAddict from axleaddict.com

Ultimately, it comes down to two things, the harness connector. The coolant temperature sensor sends signals to the car’s computer and if something is detected, the computer will make changes on the timing of the engine and its fuel calculations. Go find the t14a connector to the right of the battery.

Set Your Digital Multimeter To Dc Volts At 20 Volts Or Less.


Here is a quick video on how you can test your ect sensor using a basic multimeter. If the coolant temperature sensor malfunctions, it can transmit a false signal to the computer. To test the sensor, you can remove the electrical connector and check the resistance value of the sensor and compare it to specs.

If It’s Way Off, Replace It.


A bad coolant temperature sensor can cause the ecu to adjust the fuel mixture. Attach the ohmmeter to the sensor’s terminals. For you to locate the temperature sensor, you have to open your vehicle.

See The Diagram Below For Where To Test Voltage.


This device works on the principle of dependence of potential difference in temperature. In this video i go through the steps on determining why you may have code p0115 and/or p0125. Use a drop light if you need better vision into the engine block.

When The Engine Reaches Operating Temperature, Insert The Positive Probe Directly Into The Coolant.


I think the next step is to follow it backwards. How to test coolant temperature sensor. Testing the coolant temperature sensor is a very quick process.

Coolant Temperature Sensor Data Sheet Revision Date:


It is situated under the hood on the engine block. Your coolant temperature sensor communicates important info to the car's computer. The engine coolant temperature (ect) sensor, is one of the most important, engine management sensors.

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