Reset PCM

does anyone know how to reset the PCM?

I followed the steps on the HOW TO section on cleaning EGR, and it says to reset PCM. what is PCM?

please help me out
 
Disconnect your negative battery terminal and hold your brake down for a second or two and reconnect the battery cable and presto you have a reset pcm (power control module) aka the thing that runs your electronics in your car.
 
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