Agreed, it really is

Good question Steve!!!!!

Hopefully mr. Thompson will answer Steve....

In my experience no, there is no risk in doing this. This is the way that we were trained by Mercedes Benz USA , as a factory tech, no locate faulty modules/branches on a network. It is a little easier on a Benz because most of them have "X connectors" which act as a "junction" for the modules to connect to. So all you have to do is locate the x connector for the network you are working on, then unplug one connector at a time until the waveform stabilizes. I have never had any issues doing this.

I know that there are TSB'S out for some GM's for doing this with the BCM, particularly the BCM ground(s). They often recommend battery disconnect before disconnecting BCM, but I have never actually seen it before so 🤷‍♂️

@@PaulysAuto I change a bcm about 2 months ago because of battery voltage went down

I would like to know Bernie's take on this also. I've read in many books that the key should be off when plugging or unplugging electrical components.

scaner danner had an explosion airbag working with airbag module with key on

@@alinduta5398 That particular module was unbolted.

Diagnose Dan, mechanic mindset

@@scaracci24 ???

That is a good question.

Most possible, the module was unbolted, and when you was trying to disconnect it,you turn the module up side down, the gyro sensor inside the module 'felt' that the car had an accident and turned up side down, and deployed the airbags. logically, only the side airbags deployed. can you remember which airbags deployed?

@@Lambros_Stefaneas the steering wheel and driver's A pillar

@@seftonplayer32 I think, this is the most possible explanation, I don't think that, when you unplugged the module, the 'spikes ' deployed them. I feel sorry for you.....😔😔😔 In our trade, sometimes (or the most times 🤣),we are learning from the mistakes.....

but if you cannot unplug a bolted srs what can you do? unbolt the module,give it a ground and then unbolt?

@@alinduta5398 unbolt the module,give it a ground and then unbolt?

I agree with you but this happens in all brands by this time

@@patriciomunoz2830 that doesn't mean it's ok. government should ask the manufacturers t o recall their poorly designed craps and re-program them so one bad module does not shut down the whole car and if it does it should set a very precise fault code. it's absurd that nissan factory scan tool was not able to say which module was causing the problem. I'm currently recommending to my customers to stay away from european cars because they don't know secondary air system. if their cars don't complete the secondary air system monitor, they wont be able to smog it and will have to trade or junk the car. there should also be some class-action law suits against manufacturers who have very primitive design flaws embedded in their systems. there should be law suits against those that use finest print on a very small label for critical information labels such as underhood emissions labels, for instance or models that don't run self-test monitors if scan tool is connected to their dlc, ... just because they do it wrong doesn't mean we should develop tools to put up with their pure negligence. why if the chief engineer was suffering from Alzheimer or dementia at the time of the design?

@@MPier thank you so much man! I'm currently having the same problem with my 2018 Nissan Rouge sl. The car is relatively new, but I can't seemed to pass the "smog", as I'm getting a U1000 & 1001 codes, which of course results in an I/M Cat, O2 sensor, and EVAP all "Not ready". Remind you, I don't have a "check engine light" on. Some mechanics have advised me to "drive the car some more". I've been driving over and over on the highway by their instructions, only to realized that the problem still exists. I'm extremely frustrated and annoyed as you can imagine. I set up an appointment with Nissan next Thursday, but a bit nervous, as their are known for poor customer service smh

@@nakiabrown994 insane, these issues were seen on early obdii cars and mostly on the european models, say 1996,1997 models but there's absolutely no excuse for a 2018 model to behave the same way, not completing the monitors and without setting any codes so we can have an idea what the hell is wrong with it, especially with gas prices at these levels. Nissan dealer will most likely say 'drive it on the highway straight for 10 minutes'. Also don't go faster than 68mph for this purpose.