Pcm module

[Rock_28]

what do they do when they check the PCM for proper operation and what do they do if it does not have proper operation?
Rock

[vamc]

They check for any codes and/other problems.If there is a problem, they more or less do an update from the factory spec.

[richtazz]

They also check for proper 2-way communication to/from the sensors and actuators, proper power supply and grounding, and they check the flash programming for errors or updates.

[Rock_28]

[quote=richtazz]They also check for proper 2-way communication to/from the sensors and actuators, proper power supply and grounding, and they check the flash programming for errors or updates.[/quote
What does it usually cost to have it done? Round a bout figure$$