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No good deed goes unpunished !

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Old 02-10-2010, 10:41 AM
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Question No good deed goes unpunished !

I jumpstarted a friends BMW 545 yesterday and now the A/C clutch will not engage and the 4X4 does not seem to be engaging. I have a 2007 F150 5.4L. I checked fuses since according to the owners manual the #11 fuse controlled the A/C clutch and 4X4 solenoid..fuse was good.

What do I check now ??
Old 02-10-2010, 10:54 AM
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Fuse 32 also goes to the A/C clutch relay. Then of course, the relay and diode in Auxiliary Relay Box 1.

Fuses 111, 11, 29, and 30 also are in the 4wd system diagram. There are also two relays in Auxilary Relay Box 1.
Old 02-10-2010, 11:32 AM
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Thanks GATORBB..I will check all..is there a way to check the relays other than replacing them?
Old 02-10-2010, 11:37 AM
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No problem.

Here's how to test:

http://www.ehow.com/how_4421888_test...nal-relay.html
Old 02-10-2010, 11:43 AM
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Originally Posted by Thomas54
Thanks GATORBB..I will check all..is there a way to check the relays other than replacing them?
Or pull a relay of equal size from something else temporarily; IE fog lights.



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