RubberCarrot Posted April 26, 2021 Report Share Posted April 26, 2021 OK Folks, Time to bug you all with a very specific problem. I searched the forum and could not find info on the vehicle/problem specific enough to give me a direction. The car is a 1995 Fleetwood Brougham. Ever since I have owned it (9 years) it has had a problem I just worked around, by driving it at least once a week. The dreaded "Parasitic Power Drain". Yeah, been dodging that one. Best fix known to man - drive it. But this week the battery went dead in 4 days. I have seen signs of fluctuation in severity and have been generally observing it all this time and poking around here and there. I didn't get lucky in those efforts. So today I opted to actually do a voltage drop test at the fuse box before getting more involved with relays, actual amperage draw testing etc. (Who wants to reset all the radio stations?) So... As a reference I chose the CCM Bat feed as a baseline measurement (inferred acceptability). At the fuse, it fluctuated between pulling .6 mA and 1 mA. I went with 1 mA and after referencing this table: fuse-charts.pdf (powerprobetek.com I see this translates to a draw of 135 mA. (inferred acceptability) With that in mind I went through all the fuses. A few were pulling some current. All of the problem candidates are listed below. (read from right to left maybe) I think you will agree one circuit stands out. Power Locks. mA Result Circuit Fuse Amperage Milli Volt measured 1713 PWR Lock 20 5.5 135 CCM bat 10 1 127 RAP Bat 25 0.3 93 Park lts 20 0.3 11 HVAC Bat 10 0.6 27 Tail lts 10 0.2 212 Wiper 25 0.5 2318 Total drain So, my question: Have any of you folks, especially the long time Caddy techs, seen this and might you be able to tell me where to go, other than to h***. LOL. I know I have to get into the weeds on this. I m just hoping for some direction to start with. The locks all function as designed. There is no obvious problem. I am not in the mode to tear into all the doors but may do so eventually because I want to get inside the RR door anyway. Meanwhile, I am pulling the power lock fuse to see what that buys me. I don't think I need to get into testing amperage draw while pulling fuses. Unless one of you tells me different, I think I have my culprit. Thanks in advance for any ideas and if you want to shoot me for asking this question, please do. It will save me some work. RC Quote Link to comment Share on other sites More sharing options...
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