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1993 945T: Fault code 144 --- Service Bulletin 922X, Feb. 1997 900 1993

posted by  olyh01 on  Sat Sep 6 16:39 CST 2003
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last visit: Fri Jul 12 09:22 CST 2013
[RELATED]

Bruce,

I took the FI relay out and inspected all the solder joints using a magnifying glass. Sure enough I found some very fine cracks and solder crystalination. I also found the relay contact surfaces were somewhat pitted. I carefully resolder all the joints and put it back. Time only will tell if this is a succesful repair.

If and when I get time I will look into this relay construction a little closer (maybe not, depend if the car acts up again, and my time.) These solder joints and circuit board traces for pin 87-1 don't seem to be the only conductive path, not the main one at least. The very heavy copper bar and the other metal frame alone seem to be much more capable of carrying the current. This is what I found which appear to be the copper bar current path:

Pin30 - bar - metal frame - contact - contact - metal fram bar - pin 87-1. Maybe I missed something.

Thanks for the help again,
Lih-Yen






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