Electronic issues; linking lights and locking and unlocking door locks

Hi,

I have some strange goings on with my electrical or electronic systems in my
2000 Dodge Grand Caravan.

Upon starting my car the ABS brake light came on and stayed on. After making
sure the brakes were okay I drove the car about ten miles. During the drive I
had three or four episodes, each lasting about ten to fifteen seconds, of the
doors locking and unlocking rapidly, the "door ajar" light blinking, and the
map lights also blinking. It's possible that this was going on in unison, but
I don't remember for sure. This "blinking" behavior seemed to occur at about
the same time as slowing to a stop and then again when I accelerated; it
appeared to be somewhat related, then, to the small g-forces inherent in
starting and stopping.

When I shut off the engine and then restarted right away, the ABS light lit
normally and briefly in the diagnostic mode, and then stayed off. Also no
repeat episodes of the strange "blinking" behavior. I have had two other
restarts of the car over a period of 24 hours with no further problems.

The only thing that I did a day before this started was to have my car washed.
It froze that evening and the problems occured when I started it the next day.

I would appreciate any ideas about what might be going on.

Thanks.

Bill

 

hmm 2 problems possibly? (faulty door ajar switch/door not closed) all the
way.... and a bad wheel speed sensor

 

Hard to say for sure, but often when multiple systems are affected
simultaneously, the problem is a ground connection that is corroded.

Matt

 

possible loose ground wire and there is a few on the bottom of the dash

 

I've had the problem before, it happened after I reached 10mph, which if I'm
not mistaking is the speed at which the doors lock. The problem I had was
with a bad sliding door sensor. The sensor worked but needed a shim on the
face to depress the sensor fully.
Jim