This video covers the complete testing of a temperature sensor for a vehicle, including: the sensor itself, the 5V signal circuit, and ground (low reference). Although the vehicle used in the video is a 2001 Chevy Tahoe, this same method can be used on almost any temperature sensor on any vehicle. This includes: engine coolant temp sensor (ECT), cabin temp sensor, intake air temp sensor, ambient air temp sensor, transmission temp sensor, engine oil temp sensor, and more.

Use DYVO to test the sensor, all the circuits, and pull a circuit down to verify the control module is good.