CAN network explained. A CAN Bus can fail in different ways and can cause a no communication with the scanner, in some cases it can cause a vehicle not to start. Here are different test you can perform using only a multimeter. You can perform a voltage test to see if the Can bus is active or shorted. You can use a resistance test to check the terminating resistors and to check if the network is shorted. The best way to know how to test the CAN bus with an oscilloscope.

Disclaimer:
The content of this video is available for informational and educational purposes only.
I cannot guarantee against improper use or unauthorized modifications of this information. MR. DIAGNOSTECH assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not MR. DIAGNOSTECH.