This CAN Bus resistance check is very simple and easy WHEN DONE CORRECTLY. In this video we look at how to diagnose a CAN bus fault, looking at CAN high and CAN low wiring with a multimeter. We cover in depth all the different measurements you need to make when using resistance to check the can bus network. CAN bus fault diagnosis can be difficult; I'll break it down into simple steps to help you improve your car diagnostics. This is similar to the test I conduct with Master Technicians at CAN Bus Technical Training!!

I prefer to use an oscilloscope for my CAN bus diagnostics (PicoScope 2204A), but my Fluke meter is a good tool if used correctly. We will also see if a cheap multimeter is suitable for diagnosing CAN Bus as well.

Fluke and cheap multimeter couplers…

US links:
Fluke Multimeter – https://amzn.to/301YZhm
Cheap Autoranging Multimeter – https://amzn.to/3jIsrAI

British links:
Fluke Multimeter – https://amzn.to/2BPNd08
Cheap Autoranging Multimeter – https://amzn.to/3gkV9pg

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Video links:
Best and Cheapest Auto Scope – https://youtu.be/1LBKtlpCj_4
4 CAN bus errors diagnosed – https://youtu.be/f2uPhKd-ETI
CAN bus multimeter test – https://youtu.be/JPE42HSJxAk
5 simple oscilloscope tips – https://youtu.be/nmGubcuzbtU
Quick error checking – https://youtu.be/MOLj5vGIDsg

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