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Unread 11-11-2012, 03:46 PM   #1
moneyinc
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1996 ZJ 
 
Join Date: Oct 2012
Location: Deerfield, MA
Posts: 5
Parsatic Drain Fuse 8 in Power Dist. Center?

Hello all,

Recently got a new batter to replace dead one (old and tested bad cell). Got the new battery hookup up and the zj started right up. A few days later (after sitting a weekend) the battery is dead. Charged the battery up and did a parasitic draw test (after letting it sit for 25 minutes) and I'm showing a .750 draw (10A scale). Been pulling fuses (pulled #7 instrument cluser and no change) to no avail until I pulled Fuse#8 in the Power Dist. Center and the draw dropped to .240. I put the fuse back in and it's back to the .750 draw. The manual says that fuse is:

Ignition switch, engine starter motor relay, power train control module, park/neutral position switch.

Does anyone have experience with this type of draw? Also, @ .240 from what I've read, that is still too high? Out of daylight now so it's time to research more. Any insight would be greatly appreciated!!!

Thanks!

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Unread 11-11-2012, 04:06 PM   #2
moneyinc
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1996 ZJ 
 
Join Date: Oct 2012
Location: Deerfield, MA
Posts: 5
update

Plugged fuse 8 back in in the power dist. center and the draw is back up to .760. While that fuse was in, I pulled fuse #2 in the passenger side floor panel (cigar lighter) and the draw dropped to .604. The draw did not drop below the level (.240) when both fuses were disconnected.
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Unread 11-11-2012, 05:00 PM   #3
moneyinc
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1996 ZJ 
 
Join Date: Oct 2012
Location: Deerfield, MA
Posts: 5
another update

So I've eliminated my parasitic draw by removing both fuse #11 and fuse#8 from the Power Distribution Center. The draw was brought down to .104 after removing fuse#11 and drops down to almost nothing. Getting closer....

Now just got to find the root cause of all of this....

Last edited by moneyinc; 11-11-2012 at 05:35 PM..
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Unread 11-11-2012, 08:10 PM   #4
moneyinc
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1996 ZJ 
 
Join Date: Oct 2012
Location: Deerfield, MA
Posts: 5
once again...

Alright. So I've pulled the circuit breaker in cavity k in the fuse box (driver/passenger door modules) and this is the culprit behind the 650 Ma drain coming from fuse 11 in the Power Distribution Center. Haven't had any problems with the door locks not working (and they lock automatically after I start driving) so I'm not sure why this would be causing a drain? Also, are there any negative effects of operating with this circuit taken out? (No worries about doors being locked around here).

Still working on what is causing the extra 50-70 draw from fuse 8 in the PDC...

Thanks for any insight!
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Unread 11-11-2012, 08:36 PM   #5
jnicewan
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1995 ZJ 
 
Join Date: Dec 2010
Location: Norman, OK
Posts: 2,006
Those kind of draws can be tough to nail down, especially when draws go into modules and nobody knows whats going on inside a module. Since you are pulling fuses to narrow down the draw, you might start unplugging the loads on the fused circuits and see if you can find the actual component thats causing the draw. Generally anything over 50mA is considered excessive.
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Unread 11-11-2012, 09:16 PM   #6
Darintbr549
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Join Date: Aug 2012
Location: , Iowa
Posts: 19
Older doges had strange feed back on some cars and not others this cold be hard to find. Id cheek the grounds first. Then I cheek for bad wires before
I bypassed things. No real answers I know but theres a bump back up the page.
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Unread 02-20-2013, 12:09 PM   #7
KristineEckley
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1996 FSJ Cherokee 
 
Join Date: Feb 2013
Location: Westminster, Colorado
Posts: 8
I am having the same issue with #11 in the PDC, as well as #7, which is the blower motor. The heater quit working a few months ago and after replacing everything except all the wires I had to hard wire it to the fuse panel inside. Not sure if I can simply pull that fuse in the PDC but I will use your post to try and figure out the problem with #11. Thanks so much it has been driving me crazy!!
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