Thread: Air Pump
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Old 02-24-2010, 02:39 PM
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tighed1
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Default Re: Air Pump
Originally Posted by aschrager
Could be a bad relay control module. That is what causes the secondary air pump code to come on most of the time.
Beat me to it.

If you are brave enough open the RCM and close the contacts on the relay marked "E" on the right in this photo.



The air pump should turn on. I noticed that the contacts on this particular relay in one of my RCMs is burnt pretty good. I sometimes get fault code PO445 (or is it 405, 455, 505?) If I recall correctly you don't even have to have the key in or on to do this.

If the pump operates I'd say it's good. If not I'd look the RCM over.
 
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