1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, Removing Fuses from '04 Caddy Fuse Holder in Past Cadillac Vehicle Discussion; Guys, We have an '04 Cadillac DeVille DHS. When leaving an appointment yesterday, I noticed that the SERVICE ENGINE SOON ...
- 06-28-13 12:45 PM #1Cadillac Owners Fanatic
- Automobile(s): 2004 Cadillac DeVille DHS
- Join Date
- Aug 2012
- Endicott, NY
Removing Fuses from '04 Caddy Fuse Holder
We have an '04 Cadillac DeVille DHS. When leaving an appointment yesterday, I noticed that the SERVICE ENGINE SOON light was on. When I got home, I took out the procedure for pulling codes and I found a couple, but the one that made the most sense was the PCM code P0410. I looked it up and the definition of this code is "Secondary Air Injection (AIR) System". Following the link from this code took me to a section that stated that the most likely cause of this fault is water freezing in the pump or corrosion from water collecting in the pump. Either one causes the fuse to blow. Since it was almost 90 degrees yesterday, freezing most likely wasn't the problem, so I decided to check the fuse to see if it was blown.
I removed the cover over the fuse box and found the fuse. It's a 50 Amp, very large one. I tried to pull it out, but could not. So my question is, how do you get these large fuses out of the holder? There is a small fuze removal tool included in the fuse box, but it sure wasn't designed for this fuse! Is there some special technique (e.g., unlocking something) to removing these large fuses?
Also, I could try testing the fuse in circuit. Seems like with the ignition "on", I should be able to measure voltage on both sides of the fuse IF there is power going to the pump when the ignition is on but the engine is not running. But it seems like you wouldn't want the pump on unless the engine is running.
Also, when I removed the cover, there was a second plastic cover over the fuses. On the top it says, "REMOVE AND DISCARD THIS COVER FOR FUSE OR RELAY SERVICING". Why would you want to throw this away? And why are the numbers 1, 2, and 3 located next to the three large bolts holding down the fuse box?
Thanks for the help.
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- 06-28-13 01:23 PM #2Cadillac Owners Connoisseur
- Automobile(s): '98 STS (RIP @ 206,xxx miles)
- Join Date
- Sep 2003
- Atlanta area
Re: Removing Fuses from '04 Caddy Fuse Holder
Also, when I removed the cover, there was a second plastic cover over the fuses. On the top it says, "REMOVE AND DISCARD THIS COVER FOR FUSE OR RELAY SERVICING".