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CAN-BUS No Communication Diagnostic | Resistance, Voltage, Short Circuit, Pin to Pin Test

In this video I explain the CAN-BUS diagnosis step by step. I have a car for this video that has a major CAN-BUS problem, so my scan tool cannot communicate with multiple control units (Engine, Transmission, ABS, A/C, ..), so I explain how to start the diagnosis on the CAN-BUS from the more accessible points to find the problem. I explain how to test the CAN-BUS resistance, how to test the CAN-BUS voltage, how to test it for the short to ground, then how to narrow it down to isolate the problem area for finding it easier. I also explain the CAN-BUS wiring diagram. You might be interested to watch the following videos too: CAN-BUS Explained | Everything You Need to Know About CAN-BUS | CAN-Bus Diagnostics & How It Works    • CAN-BUS Explained | Everything You Ne...   CAN-BUS Explained | B-CAN Diagnosis | Test B-CAN with Multimeter & Oscilloscope    • CAN-BUS Explained | B-CAN Diagnosis |...   LIN Bus Explained | Everything You Need to Know about LIN BUS | Local Interconnect Network    • LIN Bus Explained | Everything You Ne...   K-Line vs LIN-Bus | K-Line Explained:    • K-Line vs LIN-Bus | K-Line Explained ...   Join the channel for more videos and more support:    / @automotivediagnosis   Please follow us on the following social media too:   / autodiag001     / automotivediagnosis   https://fix-it-first.com #canbus #network #bcm #instrumentcluster #oscilloscope Disclaimer: Any information contained in this video is just the understanding of “Automotive Diagnosis: Cars Repair & Training Guides” and it is not an official guide or reference, so everything provided in this video is just a share of our experience and understanding and they are provided as a courtesy for your reference only. So, if you are using any part of this video, use the information at your own risk. We highly advise you to check the manufacturer owner’s manual before performing any act of removal, diagnosis, inspection, or repair on your car to know about what you are authorized to do on your car, what the correct and legal procedure is and what risks might be involved, also viewers are strongly advised to consult a licensed person before any sort of inspection or repair. Due to the factors beyond the control of “Automotive Diagnosis: Cars Repair & Training Guides”, we cannot guarantee against improper use of information or tools or systems, or the procedure provided. “Automotive Diagnosis: Cars Repair & Training Guides” disclaims any damage, injury or loss caused by your decision to follow the steps provided in this video.