How does the inertia switch/circuit work? - Defender Source
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  #1  
Old April 2nd, 2016, 02:47 AM
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Chris
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How does the inertia switch/circuit work?

Hi, I new to Defenders, and did some reading to learn about the inertia switch and its purpose.
I was wondering if someone can explain how switch works?

How is the circuit triggered? I've read mentions of roll-over to even hard jolts/bump.

Also, I assume it's a closed circuit until the switch is tripped. At which point, the circuit is open (broken), and fuel pump, etc. stop working. Is this correct?

Thanks!
Chris
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  #2  
Old April 2nd, 2016, 06:17 AM
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You'll actually find them on all cars. Purpose is to shut down circuits like fuel pump in event if an accident. Also to activate airbags etc. https://en.m.wikipedia.org/wiki/Inertial_switch

Have beaten up trucks very badly and never triggered one. Don't worry about it.
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  #3  
Old September 10th, 2016, 06:11 AM
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andre
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Does unplugging it disable the switch? In other words, if I am trouble shooting would unplugging it eliminate it as a possibility for not starting?
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  #4  
Old September 10th, 2016, 06:38 AM
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Quote:
Originally Posted by Rocky View Post

Have beaten up trucks very badly and never triggered one. Don't worry about it.
I've triggered mine once...at Uwharrie of all places.
'91 RRC 14SUX truck pulled it into campsite after a trail ride fine and then 5 minutes later COULD NOT get it started for anything.
After checking this/that and everything else someone suggested the inertia switch and sure enough... it had popped up.



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  #5  
Old September 10th, 2016, 07:06 AM
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Andre, unplug it and the Rover wont start.
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  #6  
Old September 11th, 2016, 05:04 AM
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andre
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Quote:
Originally Posted by Roverlab View Post
Andre, unplug it and the Rover wont start.


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