Test Temperature Sensor With Multimeter

How to test coolant temperature sensor.

Test temperature sensor with multimeter.

How to test a vw golf jetta bora mk4 coolant temperature sensor simple easy video tutorial. The iat sensor is a thermistor that changes electrical resistance with changes in temperature. All you are going to nee. If not it needs to be replaced.

We ll start with a multimeter continuity test. You can take advantage of the way the iat sensor works to test sensor operation using an ohmmeter. Turn on the engine and allow it to run for 5 minutes or until the temperature starts to go up. Plug the red probe into the vω port.

Measure the resistance across the terminal pins using a digital multimeter and write this value down. Digital multimeters dmms with built in signal conditioning hardware measure various types of temperature sensors such as thermocouple resistance temperature detector rtd and thermistor. Plug the black probe into the com common port on your multimeter. Disconnect the wires for the sensor at its power source point a in the diagram.

Any car in this video we will demonstrate how to test coolant temperature sensor on any car. Resistance in ohms cold resistance perimeters. Connect the black lead of the meter to the body of the cold sensor and the red to the. Disconnect the connector from the coolant temperature sensor temperature sending unit.

You can do it at home using a digital multimeter and a cooking thermometer. The engine coolant temperature ect sensor test is simple and can help you fix your car faster. Look online for the hot and cold readings of your vehicle s temperature sensor and compare your readings to see if they closely match. We want to make sure that all the wires are connected correctly.

Step 4 check with cold sensor. 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. Do this before running the engine it must be cold for this test. You can easily disconnect your temperature sensor from the control system and validate the temperature sensor directly with your dmm.

A bad engine coolant temperature sensor affects engine performance. If you have a new sensor on hand and want to check it you can do this easy test. Test the sensor again with the multimeter.