1998 DeVille low refrigerant light comes on, ac shut down even though refrigerant is not low.
Feb 15, 2011 at 12:36 AM
a/c low refrigerent
1998 CADILLAC DEVILLE
PMAKKI
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What method used to check fron charge?
Feb 15, 2011 at 8:39 PM
brought it to the shop, they serviced it, drove it, message came back on, changed low press. switch, drove it, came back on, checked for leaks, no leaks, pressure still holding. Message still exists.
Feb 15, 2011 at 9:25 PM
System needs to diagnosed using a scan tool was that done? if yes what was DTC code? if no need to have that done. message not totaly reliable diagnosis
Feb 17, 2011 at 1:59 PM
OK, I do not have the diagnostic equip. you mention, what would cause this problem other than low freon or low pressure cutout switch? All fittings are dye checked.
Feb 18, 2011 at 12:24 PM
A fault in PCM that's why need to get car scanned
Feb 19, 2011 at 4:36 PM
scanned the system with obd 2 scanner, no codes showing
Feb 19, 2011 at 4:59 PM
I also jumped the low pressure switch and system works fine, will replace switch again, maybe bad out of stock.
Feb 19, 2011 at 5:02 PM
If jumpered and works light out then agree switch maybe faulty. Good Luck
Feb 19, 2011 at 5:56 PM
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