Hi there - new problemo;

Vehicle - Ford Courier 1.8D V reg
Fault - ABS light stays on from turn of key.

This just happened one day recently and has stayed firmly on ever since. Can anyone tell me:

How ABS system works
Where the sensors are located
How to check them
Likely causes of this problem

Thank you all for helping.

Axxe

 

ABS works by when you press the brake pedel really hard, insted of the brake just jamming on it 'pumps' extremly fast meaning the brakes don't lock, i think this is how it works?????
also i htink a lot of cars use dual cross over systems?? where the front left and rear right brake are wired up together???
im not sure on this though, just what i have seemed to of gathered about it..

 

really need to go to a garage for a diagnostic shoud be around £30.
but if your feeling ambitious-
get a multimeter that reads 0hm's
jack up each corner and find the speed sensor in the hub behind the wheel,
trace the wire to the multiplug, un plug it and put the mutlimeter across the 2 terminals and write the reading down. do the same for all 4 sensors (1 for each wheel). then compare the readings if you have a faulty sensor there will either be no reading or it will be alot higher than all the others.
if there all the same you will then have to check the trigger wheels, the fronts are mounted on the outside if the cv joints in the hubs. and the rears ar mounted in side the brake drums. and if thats ok then you definatly need to take it to a garage as it will either be a pump issue or wiring.
hope this helps
sarge