There is a branch of the engine wiring harness that splits off and plugs in to that pump assembly. the pins on that are rusted. they are thick (maybe 20 gauge stiff wires? - the thing looks like a giant video game controller with a screw on it)
you may be able use a wire brush f that is in fact the why your abs light is on. but rust is just the symptom.. if you can get that working, make sure you weather proof the seal so it doesn't happen again
but the way life works, you are probably going to end up going to a junk yard and stealing (buying?) that end off of another eldo. if you can, call a few junk yards and make sure the one you take is from a 96. i don't believe that that abs module connection changed but caddys are horrible and the company likes to change the wire colors between model years for some parts. then you can splice them together and with a little trial and error you should be able to get it going. (some of the wires within some of the cables are the same colors.. i think i ran in to it twice between the 4 or 5 larger cables that mostly make up the snake)
oh and if thats the route you take, make sure you keep the cable as close to the same length as possible. it has a very awkward bend in it that JUST keeps it from getting chewed up by the smaller radiator fan. hope the wire brush works :)
oh wow just realized you posted this about 4 months ago. hope you didn't need abs this winter :)
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it is a 99 caravan 3.3 no abs , then you are on about abs light pump etc
the abs pump only works when the master cylinder is under pressure and that pressure is suddenly reduced by the sensor reading a locked wheel and a valve is opened to release line pressure to that wheel As soon as that wheel starts to turn, the valve closes
while the wheel is stopped and that valve is open , the abs pump kicks in to maintain line pressure otherwise the brake pedal would go to the floor
master cylinders work through a. abs unit and not because of it so if the master cylinder becomes faulty, the abs pump will not operate until a wheel stops turning as there is no line pressure to stop a wheel turning
the abs light may not be on because there is nothing to operate the system to put it on
If you lose the speedometer, replace the rear differential speed sensor on top. If the speedo is ok, then it's your ABS pump/solenoid unit in the engine compartment left rear side. Most of the 99's have only the rear ABS, not front so don't look at the front brakes for the issue.
#15 in the fuse box on the far right side of the engine compartment. alternatively, you can unplug the big plug on the ABS module, which is on the left side of the engine compartment, toward the front of the car. it's got brake lines running in/out of it, it's hard to miss.
Have you check both fuse boxes? The abs relay/fuse is in the fuse block under the hood in the engine compartment. It is located on the driver's side near the battery. It is labeled ABS. There is also an ABS/EVO solenoid. Hope this helps and good luck. Please let me know if you have any trouble finding it.
when you start the car, all of the dash lights come on. this is to ensure that the warning lights are working. if a yellow light comes on that has the letters ABS, then you have ABS. or open the hood and look near the master brake cylinder, located on the drivers side on the firewall (dividing wall between engine and passenger compartment). there will be a device with small cylindrical actuators attached to it with brake lines attached.
This is common in the audi cars. It may be that your ABS module is failing or the the connector to the ABS pump located in the engine compartment on the drivers side, with black metal lines going into it. Their is a large black connector that sometimes needs to be unplugged and cleaned and plugged back in
I had the same problem when climbing a long, steep grade. My mechanic told me that there is ABS sensor located on the top of the differential gear box which can get plugged with metal shavings, thereby causing this condition. It can easily be replaced by loosening the retainer, pulling out the unit, and replacing it with the new one.
Seemed to correct the problem... however, I suggest that you also drain the gear oil & replace it, so that you don't clog your new sensor in short order with the same metal shavings that created the problem in the first place.
the anti-lock brake system is part and parcel of the traction control system. the abs has a $750.00 valve located in the engine bay on the right side (as you face the car from the front) the driver's side just behind the headlight. i had a mechanic who took it upon himself to remove, dismantle and clean and reassemble the unit, all to no avail but also without expense. the cost of the part was prohibitive since Blue Book on this car is just about $700.00. it will run and brake just fine without the abs or the traction control system either.