I have a 2000 x with the PSD. My baterries have a slow drain on them. After it sits for a day or two the Batteries are too weak to start my truck. The batteries are new and the alternator is charging properly. How do I fiigure out where the drain is from (I can watch the drain if I hook my voltmeter to the batteries, Very slow but still a drain)? Thanks

 

What is the stats. on the batteries. How old and stuff.

 

Batteries are brand new.

 

That's the only way really. You need to measure the amp draw. It should be miniscule. Just enough to keep memory presets and such.

Pull fuses till the draw drops.

I do not know what the amp draw should be when the ignition is off but I would say less than 1/2 amp.

I would also double check your battery grounds. Loose or corroded (even if not real bad) can drain your battery.

One guy had asimilar issue and it turned out to be broken wires INSIDE one of his battery cables. Replacement of that cable determined that it was the culprit.

 

I have posted a couple threads regarding a similar problem on my own 2000 EX V10. I had to let my dealer look at it, and the mecanic found a drain. On my V10, incab fuse nr 15 (5 amps) seems to be the *******. When doing a test with an amp-meter between the negative post and the disconnected cable, he found a drain of 0,35 amps. According to him, this is enough to put the car out of business after a day or two.

When removing this fuse, the drain dropped to less than 0,1 amps. During the test he found no other fuse or relay, both incab and in the engine compartment including quite a few single fuses connected to The LPG system and extra lightning etc, that made the meter change any significant figures. He also checked the alternator, and found it ok.

This cirquit provide power to a brake pedal switch (cruise control switch off signal), witch he found ok, and something called the GEM-module. It controls every incab electronic device. The module is placed on top/behind the incab fusebox, with a zillion multicolored wires connected to it.

In my case, according to the mecanic, there is nothing connected to this module that is "active" when the ignition is off, so it seems to be the module itself that´s the sinner. My dealer has now ordered a new module from US (I live in Norway). It is expected to arrive in a couple of weeks. I have to pay close to 1000 dollars + labour for this, so he better be right. If not,I will only pay for the labour, and not the module. And still be stuck with the same problem. But I really hope he´s right, so I can get this frustrating problem solved

So in the meantime, I still have to keep charging to keep my Ex running.

 

I havent had a chance to check all my fuses. But will this weekend. Thanks

 

I had my battery checked today by a battery shop, and they found 1 cell nearly discharged, and the other 5 better. The other 5 where not showing top marks on the acid test, but there was a significant difference. So now I start to belive that my "draining problems" actually are a battery that´s not able to be fully charged because of the broken cell, and therefore do not stand up against a draining of 0,38 amps, wich is the figures I have reached through my "research".

 

Did you have a large drain with the engine off? Like I do?

 

Yes, engine off, everything else like dome lights and under hood light also off, ignition off.

 

Call me stupid with a voltmeter, but how exactly do you measure the draw? I think I know how but I am not 100% sure. I have a battery that goes down in about two days. I have ALOT of electronics but they have all been installed for atleast a year and this it the first time a drain has occured. Both the battery and the alt. are new. The battery is less that a month old and the alt is about 6-9 months old.



Thanks, Bryan

 

disconnect positive or negative cable. take ammeter and set it to ten amps first. connect one lead to battery and one to cable. if draw is greater than .6 amps you have a draw.

make sure you start on the ten amp setting due to not knowing how big the draw is so you wont blow your fuse in the meter

 

Thanks, I hope to be able to get to that this weekend if we have power after the storm.


Bryan