Question about Cadillac DeVille
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Posted on Jan 02, 2017
P1633 means KAM (Keep Alive Memory ) Voltage too low. the KAM is caused by low battery voltage and you replace the battery.When you replace the battery the KAM loses Memory and the problems resulting in what you are experiencing now.When replacing a new battery, reconnect the Positive cable first.And use a trickle battery charger set low to the cables before disconnectng the battery . this will keep the voltage to the ECM powered with enough voltage. All you can do now is make the computer relearn the way it should run. Disconnect the negative cable from the battery, wait a while 20 seconds or so. then reconnect the cable. I do not know if this is a temporary fix or not but it should re-program the computer.
Posted on Nov 30, 2008
A flashing light indicates that the engine is misfiring enough to damage the catalytic converter, this needs attention ASAP, otherwise after the misfiring is repaired, you will be buying a new catalytic converter, the damage may have already been done. as for the p1633 has the battery run low and you had to jump it off, or recharge the battery?
Posted on Sep 29, 2009
P1633 means KAM (keep alive memory) power is low. The power that goes to the vehicles computer to hold its memory when the key is off has lost its power. I would start by checking fuses in the fuse panel in the engine compartment(near the radiator support). If the fuses are all good then I would test for power at the computer connector which is also in the engine compartment behind the engine. I don't have the pin number or wire color at the moment (I apologize) since the Ford website is down at the moment. I have repaired this problem in the past by installing another power wire to feed the circuit essentially bypassing the original circuit.
Hope this helps
Posted on Apr 04, 2010
SOURCE: i have code p1633 keep
I ahve gathered this information from the web...This can be an inexpensive or expensive problem!
Suspect the battery is chronically low; not accepting a charge and needs to be replaced.
The power cables from the battery may be corroded. These should be removed cleaned and retightened.
Check the wiring harness and connections to the Power Train Control Module. Use a contact cleaner/ lubricant and a brush to clean these connections then reseat them firmly. Also make sure there are no chipped or frayed wires as it travels through the engine compartment.
Check all the fuses and other components in the fuse box and the battery junction box to make sure they are in place firmly seated; fuses are good and clean from any corrosion on the clips. The location of these boxes is in your owners manual.
Alas it may be the PCM itself. That should be replaced by a mechanic.
Hope that helps
Posted on Mar 08, 2011
P1633 --Keep Alive Power Voltage Too Low
You provided no vehicle info
I would suspect battery connections or a near
You could check the fuse but will have to use your
owners manual,we don't have any data for anything,
we are at home like you
Then the most likely cause is a poor wire connector
I suspect from your name,your not onto car electronics,
so a repair shop will be your only bet
They aren't too fond of fords or lincolns ,so your running
the show & telling them what to test & repair. Your looking
at diagnostic time, no parts or actual repairs
Posted on Jun 15, 2011
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