Might want to check the grounds. Maybe one worked looses. Check the
battery terminals while you are at it as well. But if you had a weak ground
on the battery, it could cause both those problems that you have codes for.
Either that or the battery is on it's way out the door. Might be better
safe than sorry to replace it, or at least have it load tested at the parts
store. Just because it's starting the van fine now doesn't mean it's not
weak or have a bad cell.
brian cropp
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of David Gersic
Sent: Tuesday, July 21, 2009 10:48 PM
To: dakota-truck@dakota-truck.net
Subject: DML: Battery Lamp + P1684 + P1594 == ???
Last week while I was out of town, my wife's '01 Grand Caravan turned on the
battery light while she was driving it. Can't reproduce it now that I'm
home.
Seems to start and run fine.
I found that the computer has two codes stored: a P1684 and a P1594. Neither
makes a lot of sense.
P1684 is "battery disconnected within the last 50 starts". This seems to
have
been added to foil people trying to pass a smog test by clearing the codes
by
pulling the battery to reset the computer. It should clear itself after 50
starts. Except that the battery hasn't been disconnected.
P1594 is "system voltage too high". This could indicate a problem with the
alternator or voltage regulator. The voltage regulator is part of the engine
PCM, though, not a separate item, so not easy to replace and find out if
swapping it will help.
I put my voltmeter on it, and I'm reading 13.7V +/- .2V, which seems about
right.
I'm not sure where to go next with this. For right now, I'm thinking about
just driving it for a while to see if it gets any worse, or fails entirely
somehow. I don't have enough information to want to start swapping parts to
see if it helps.
Anybody got any other suggestions?
Checked by AVG - www.avg.com
Version: 8.5.375 / Virus Database: 270.13.23/2254 - Release Date: 07/22/09
05:59:00
This archive was generated by hypermail 2b29 : Sat Aug 01 2009 - 00:31:47 EDT