Step 4 check with cold sensor.
How to test temp sensor with multimeter.
You should see a much lower reading on the.
You should have a reading of approximately 2000 ohms.
We want to make sure that all the wires are connected correctly.
To do this use your multimeter to measure the coolant temperature sensor s resistance value and then follow that up by connecting your multimeter s leads on one of the sensors of the electrical connector terminal and consequently the other lead on a different terminal on the electrical connector s sensor.
Plug the red probe into the vω port.
Look online for the hot and cold readings of your vehicle s temperature sensor and compare your readings to see if they closely match.
Check the warm sensor in your engine.
Disconnect the wires for the sensor at its power source point a in the diagram.
We ll start with a multimeter continuity test.
If you have a new sensor on hand and want to check it you can do this easy test.