I assume by "I have checked everything important to there operation" you have checked the mountings are good (close to the castleated ring) and they have the correct resistance across them to ensure they haven't failed?
Maybe look and see that the cables from the sensors are in good condition as if they come out of their mountings, they can be worn by a tyre on full lock.
The fuse is ok in the central fuse box? (The one under the cubby hole to the right of the steering wheel) : Fuse 13, 15A - blue for the ABS.
Also check the related fuses in the fuse box under the bonnet:
fuse 30 - 3 amp ABS
fuse 31 - 30 amp ABS
fuse 33 - 30 amp ABS
To test the sensors:
1. Remove Wheel
2. Remove Inner Arch Lining
3. Unplug ABS Sensor
4. Set Multimeter to Ohms
5. Set Range so meter reads between 1000 and 1200 Ohms
6. Test the sensor plug LEADING to the wheel hub by going across the 2 pins
7. A good sensor should read between the values with an average of 1.1K Ohm
8. Anything else can point to coils breaking down
9. Remember to wiggle the sensor lead when testing to check the internal coils
10. Repeat if necessary on other side.
Good luck - let us know how you get on.
I really should fix mine, the lights been on since Christmas.
I need some assistance with my 2001 1.7, I have what appears to be a common fault with these cars; the ABS and TC lights come on intermittently.
I have tried everything suggested on this and other posts-
Front sensors and castleated rings are clean.
All sensors are getting a reading 1.1ohms on the multimeter apart from the front right which starts at 2 and fluctuates down to 1.3ish.
All fuses are fine.
I have cleaned up the sensor face and castleaded rings in the rear drums.
No apparent damage to any wiring.
It does the 12mph self test but when the lights are on to indicate a problem I get a horrible grinding sound. Could it be that front right sensor?
Any suggestions greatly appreciated as the MOT expires on the 20th so need this sorted beforehand.
Only garage I could find open on a Sunday was Kwik Fit who I would normally avoid using but needs must. They wanted Â£40+ Vat just to plug in the diagnostics - offered the guy Â£20 cash in hand and he snapped it up.
Results came back as no signal from front right sensor so problem solved, it also picked up an open circuit on both front sensors; is this normal?
When buying a replacement are the sensors sided, ie will they be different for right and left?
I took the puma to my mates workshop hoping he would have a multimeter and that we could check the resistance of the front sensors to check if one was bust. he didnt have his multimeter with him but it was possible to plug the new sensor into each sides relevant socket (although not actually fitting the sensor into its housing as the old ones were left in place - they didnt want to come out easily ) to see if it turned the abs light of on the dash , it didnt. do the sesnors need to be in position to register as working/turn out the abs dash light or was this a good enough test showing that its not a front sensor at fault?
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