Hi All, 2000 Caravan 3.3, 127K Oil presure light and chime comes
on although the pressure is ok. Today I had my mechanic replace the
sending unit with no luck. He also checked pressure at idle and at
speed and all is good. He is fairly sure it is the Body Control
Module. I am looking for a used one to put in. My problem is the
chime! It is supposed to stay on for 4 minutes, but my bad unit just
resets and it is on most of the time I am driving. I can not seem to
find out if I can disable the chime untill I get the new BCM. I hear
the chime, but it just seems to be anywhere by the fusebox because of
the echo! Does anyone know how to disable the chime. I have a
factory manual, but also can not find the location of the chime.
It's possible that the wire is grounded somewhere between the oil pressure
sending switch and pin #52 of the Body Contgrol Module (BCM). Do you know
if he checked for that? Did he use a DRB III scanner (or equivalent)to
diagnose the problem? ........I just went out to check my 1999 Gr. Voyager
to try and find the chime. You're right...it's near the fuse block
somewhere. Problem is...my chime only sounds for 3 seconds when the key is
turned to "ON" so it makes it hard to locate.
Thanks SRN, I assume he used a scanner if needed. The problem seems
to be strange as it does not always act the same. Goes away for a bit,
then on for a while, then chimes for a while, then only light as it
should and so on. I found out the chime is part of the BCM so that
ends my thought on stopping that! Thanks for the reply, Jerry
You need to disassemble the connector to the oil pressure switch, remove the
rubber seal at the top inside and clean all the oil out. reinstall the
connector and you should be good to go. If you had the pressure checked at
idle why not post the spec that was found? And if you ever swap out a BCM
with another vehicle, be careful because you may get more problems then just
an oil chime. By the way, the chime.....its part of the BCM.
Thanks Glenn, when I looked at the connector it looked dry as a bone.
There does not seem to be any old oil around the area, but I will
check that out. If I remember right he said 40 and 60? on the
pressure. Did not pay attention as he said it was good. The van is in
great shape and I do understand some things should be done at the
dealer where they have the experience so I may go that route. I have a
good Dodge dealer here where I bought it and have had other stuff done
before. When you say be careful with the swap, do you mean just
general care of removing power, dissasembly and connectors?
Thanks for a great group, Jerry
That would be a good oil pressure reading. What I mean about swapping
controllers is that the controllers talk to each other or a bus line on the
vehicle, For instance, install a BCM that has a alarm programmed and your
vehicle not equipped..... The PCM will think it is equipped and not allow
the vehicle to start, not you will have to replace both the BCM and the PCM.
Try disconnecting the oil pressure sending unit and see if the lite still
comes on, if it does there is a short somewhere
Thanks, The light does come on when the sending unit is unplugged, but
very intermittant. It might be ok when I start it, then 2 minutes
later start up and go on for a while then off for a bit and so on.
With the plug back on, I drove home for two hours on the highway and
it was on with short off times for quite a while then off for the last
45 minutesof the trip. That is why I thought it was the BCM.
How would I know if my vehical was alarm equiped? My key fob has a
panic button. Is that what you meen? Thanks, Jerry
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