Test Temperature Sensor With Multimeter

A bad engine coolant temperature sensor affects engine performance.

Test temperature sensor with multimeter.

Every make and model uses a specific temperature sensor which will give you specific readings whenever you test them with a multimeter. If you have a new sensor on hand and want to check it you can do this easy test. Testing the iat sensor. You can easily disconnect your temperature sensor from the control system and validate the temperature sensor directly with your dmm.

We ll start with a multimeter continuity test. All you are going to nee. Turn on the engine and allow it to run for 5 minutes or until the temperature starts to go up. If the number on the multimeter is lower than the reading you got in step 2 the sensor is working correctly.

Step 4 check with cold sensor. Any car in this video we will demonstrate how to test coolant temperature sensor on any car. Disconnect the connector from the coolant temperature sensor temperature sending unit. The engine coolant temperature ect sensor test is simple and can help you fix your car faster.

Measure the resistance across the terminal pins using a digital multimeter and write this value down. If you do not see anything that is more than 200 ohms in difference the coolant temperature sensor is defective and will need to be replaced. Plug the black probe into the com common port on your multimeter. Look online for the hot and cold readings of your vehicle s temperature sensor and compare your readings to see if they closely match.

How to test a vw golf jetta bora mk4 coolant temperature sensor simple easy video tutorial. Test the sensor again with the multimeter. How to test coolant temperature sensor. We want to make sure that all the wires are connected correctly.

Resistance in ohms cold resistance perimeters. You can do it at home using a digital multimeter and a cooking thermometer. If not it needs to be replaced. You can take advantage of the way the iat sensor works to test sensor operation using an ohmmeter.

Do this before running the engine it must be cold for this test. The iat sensor is a thermistor that changes electrical resistance with changes in temperature. Plug the red probe into the vω port.