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Originally Posted by Craig
How do you know the pump is the problem if you haven't even looked at it yet? It's located in the heater hose that runs from the monovalve to the front of the engine, right front, just a little above/behind the alternator.
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Sorry, I wasn't trying to bust your chops. I just didn't want to see you spend bucks on a new pump if that wasn't really the problem. The aux. pump can burn out the CCU, but it's not the only possible cause (a dragging blower motor can have a similar affect, for example). I would try jumping 12V to the pump and see if it runs, as well as measuring the current when it's energized. If the pump is not the problem, you don't want to install another CCU until you find the issue.