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Discussion Starter #1
while back probing the low pressure air conditioning switch on my 02 ram 1500 4.7l...we put power to it with a power probe and the engine shut off and wont start back up but does crank. fuel pump doesnt turn on and gauges dont work...im wondering if we activated the immobilizer or the pcm is fried
 

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Why you put power to the switch???
The switch you check with resistance. Or with the pressure gauges from the ac evacuation and refill station.

For sure you fried something.
 
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