2003 Cadillac Seville charging system

2003 CADILLAC SEVILLE
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RPRZYDZIAL
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Electrical problem
2003 Cadillac Seville V8 Two Wheel Drive Automatic
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I have had two alternators installed and still have the same problem. Service charging system message comes on and then goes out.,at the same time the batt. light comes on.and goes out. Code p0622 generator f circuit problem. All connections are clean and tight. Also replaced alt. connector. What do you think my problem could be? System charges between 14 and 15 volts. Im getting ready to give up.
May 28, 2008 at 10:53 PM
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RASMATAZ
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Could be a problem with the powertrain control module field generation controlled F monitor circuit-see below. Check out the images (below). Please let us know what happens.

May 29, 2008 at 5:26 AM