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Old 02-03-2017   #16
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Re: ABS unavailable, tried most things, need help

Quote Originally Posted by basil1492 View Post
0030 - front right phonic wheel - intermittent
0031 - front right sensor - present

The phonic wheel IS the ABS ring we were talking about earlier.

You need to measure the resistance /ohms across the sensor .. both close to the sensor.. AND at the ABS unit in the big connector plug.
somebody could help with the pinout.
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Old 02-03-2017   #17
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Re: ABS unavailable, tried most things, need help

You should be able to attach pictures...

- click reply icon
- below the reply window, click Go adavanced
- in the advanced reply window tool bar, click the paperclip
- in the attachement window, click Select file
- browse where your file is stored and select (open) it, it will show in the attach window
- you can attach 5 pics, once done click upload (not in the URL section !)
- the files will be in your reply message ...

BTW, don't know why they call that "phonic", but it's actually the ring, magnetic or toothed that actuate the sensor...

Regards, Bernie
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Old 02-03-2017   #18
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Re: ABS unavailable, tried most things, need help

Thanks @aurick86, i'll get someone to do that for me.

@bernie, I was using the gallery thing instead, ive included them here but i think the problem is the phonic wheel which unfortunately means a new bearing. My problem isnt getting one, my local motor factors have them, my problem is nobody can fit them for over a week and i have 3 tests i'll have to cancel by then costing me a lot of money and reputation.
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Old 02-03-2017   #19
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Re: ABS unavailable, tried most things, need help

Hi Basil,

no need to ohm check the sensor, they don't work like this. On your car model you shouldn't see any toothed ring since there isn't any. The encoder (phonic) wheel is integrated in the hub bearing, not on the drive shaft.
See pictures below...

Regards, Bernie
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Old 02-03-2017   #20
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Re: ABS unavailable, tried most things, need help

Quote Originally Posted by Bernievarian View Post
Hi Basil,

no need to ohm check the sensor, they don't work like this.
@bernie
I was saying to check the resistance just to make double sure the circuit is not interrupted/bad contact between the ABS module and the sensor.

The sensor i believe is a hall effect sensor... so you should be able to measure some resistance.
I was in no way suggesting measuring it while the wheel is rotating.
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Old 03-03-2017   #21
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Re: ABS unavailable, tried most things, need help

Thanks again both. As it happened the light went out today for all of 4 hours then when i started the car up again it was back on. I checked it again on the delphi and it was the phonic code again but no code for the sensor. I think its just a bad bearing now. Problem is i have no idea how to change it myself and all the garages nearby cant fit it in till week after next.
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Old 03-03-2017   #22
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Re: ABS unavailable, tried most things, need help

Not relay a DIY job especially if you say you're not to good with cars.
Stuff you would need: a lot of spanners, sockets, jack-stands, a wise... a bearing press/bearing puller.... possible to do with various size pipes...and screws..etc...

I don't recommend you do it.

Get on the internet, phone around... be prepared to dive 40-60 miles. You should find somebody who can do it in 1-2 days.

You can drive the car around. just be mindful you don't have ABS until it's fixed.
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Old 03-03-2017   #23
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Re: ABS unavailable, tried most things, need help

No ABS and no Electronic Braking Distribution, which is far more dangerous since the back wheels might lock any time during (hard) braking !!
Have a look here at what kind of job you'd face ...

https://www.fiatforum.com/cinquecent...ange-press.htm

Regards, Bernie
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Old 03-03-2017   #24
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Re: ABS unavailable, tried most things, need help

And here's the poor man's method ...


Regards, Bernie
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Old 03-03-2017   #25
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Re: ABS unavailable, tried most things, need help

Thanks, ive found a garage that will do this tomorrow for me. I got lucky with todays test, took light off with the delphi and it stayed off throughout the test, came back on during the drive home . Anyway, i'll let you know if this fixes the problem as soon as i know. I appreciate all the help. If this doesnt sort it then im stumped, 3 sensor cables, cleaned up the module and new bearings seem to cover the entire lot of things that could be wrong
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Old 04-03-2017   #26
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Re: ABS unavailable, tried most things, need help

To replace the bearing you dont need a press/bearing puller since the bearing is built into the hub cap you just replace the hub cap. 2 SKF WHEEL BEARING KIT cost about 93

Here is an inserting video that show what is probably wrong with your bearing reluctor ring.

Likes Bernievarian liked this post
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Old 04-03-2017   #27
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Re: ABS unavailable, tried most things, need help

Yes but the bearing cost 30 and labour for fitting it 50 so this way works out cheaper . Ive seen that link where Bernie linked it earlier and its a lot of work with tools i dont have, for eg i dont own a 32mm socket. This way is cheaper and less work for me and having it done by a mechanic should mean a better chance of it being done right
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Old 04-03-2017   #28
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Re: ABS unavailable, tried most things, need help

Agree ! If you don't feel confortable in doing something, don't ... But get informed about how things are so you won't get fooled by dishonest people (yes, there are some ;-)

Regards, Bernie
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Old 04-03-2017   #29
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Re: ABS unavailable, tried most things, need help

Well that tears it. Had it back from the garage and it was squeaking so i took it back, turned out to be the dust cover so he adjusted that then put it back together. Now the brakes are soft as hell, so much travel in them. He checked for leaks, none, bled them and some air coming from back o/s, redid all the fluid then checked again, more air. He thinks there is a small enough hole in the caliper to allow air in but no fluid out so i now need a new caliper.

To top it all off i just put the delphi on the car, i get 0031 front ns sensor - present and even when i wipe the codes and the light goes off it comes straight back on when i turn the car on again. Its a flaming nightmare, thats worse than when it went in and ive also got the addition now of brakes that are so bad ive got to cancel 5 lessons tomorrow and possibly the week long intensive course next week meaning i'll have to pay for the guy to take a retest. Never ever buying a fiat again but more than a little upset at whats happened so far.
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Old 04-03-2017   #30
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Re: ABS unavailable, tried most things, need help

@basil1492

Don't buy the caliper, it's 99% not the cause of the soft brakes... can you describe the method they used to bleed the brakes?
I'm sure they didn't keep an eye on the fluid level.. and some air got in the brake/master cylinder..... maybe as far as the ABS unit.
Will be a lot harder to bleed... but not impossible.

When you used the block connector on the sensor to loom shouldn't matter... but might be worth reversing the wires)

This is why as said a few posts back to also check the resistance of the wires!

Are you sure Dephy is reading the correct wheel?
Try disconnecting the sensor and then read the codes.. a few times.. see if anything changes.
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