Coops
Newbie
Posts: 8
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« on: October 03, 2006, 09:46:24 AM » |
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Can somebody explain to me why my ABS warning light comes on much of the time. I have a rubber patch from a cycle repair kit over it at the moment  - but I know it's there! |
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bstardchild
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« Reply #1 on: October 03, 2006, 09:50:42 AM » |
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Can somebody explain to me why my ABS warning light comes on much of the time. I have a rubber patch from a cycle repair kit over it at the moment - but I know it's there! There are 3 separate relays, 4 wheel sensors each reading a toothed wheel on drive shaft or hub and ECU plus a connection to the pulse generator on the gearbox. Take your pick You can test the wheel sensors with a nice cheap analogue multimeter (not a digital one cos they are too slow to pick up the pulses as you rotate the wheel slowly!!!) Relays are favorite tho - just gets expensive to change them all!! |
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Cheers
BC
"The Lotus Carlton is not tail happy – honestly - as long as you accept it has 377 bhp and 419 lb/ft of torque, is rear drive and has no driver aids, it's fine."
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Tetleysmooth
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« Reply #2 on: October 03, 2006, 11:24:33 AM » |
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Can somebody explain to me why my ABS warning light comes on much of the time. I have a rubber patch from a cycle repair kit over it at the moment - but I know it's there! If you stand at the front of the car with the bonnet open, you'll see a box of relays behind the righthand suspension turret. There's one in there with the numbers: GM 90 275 794 50 201 001 That's the one that was playing up on my car. Expensive new from VX though, about 40 plus quid. I replaced mine from a scrappy and light went out and stayed out. |
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Nils desparandum illegitimi carborundum.
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Pedro
I'M A FILTHY TORY!
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Posts: 6605
Location: York
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« Reply #3 on: October 03, 2006, 03:36:34 PM » |
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The ABS light came on at random times on my old Calibra - loose fuse!
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Do you know what "Nemesis" means? A righteous infliction of retribution manifested by an appropriate agent. Personified in this case by an 'orrible c*nt... me.
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GMC
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« Reply #4 on: October 03, 2006, 03:40:35 PM » |
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Coops,
When you start the car does the ABS light extinguish? but when you move off and hit 10mph does the light come on? indicating a fault has accured
If this is the case try cleaning all of the sensors, they accumulate road grime brake dust over a period of time.
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« Last Edit: October 03, 2006, 03:43:37 PM by GMC »
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monzaiain
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« Reply #5 on: October 03, 2006, 04:22:04 PM » |
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Mine does it too! all the bloody time! How do i solve it?  ? I take my left hand...position it behind the steering wheel and hover it over the dash where the light is............................... AND SLAP IT!!! Works a treat!! The bulb holder must be loose in the back!! Try it...you just never know...i drove about for ages thinking there was a fault with it!!  |
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dj67blue
Guest
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« Reply #6 on: November 02, 2006, 12:56:55 PM » |
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i cheated and just pulled the bulb:)
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Dave the Builder
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« Reply #7 on: November 02, 2006, 01:44:58 PM » |
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II RC its an M.O.T fail if the car is fitted with abs but the light on the dash does not show then go out when first started.
better to sort out the problem and know you have the benefits of abs.you never know when you might need it.some right nutters on the road now (and i don't just mean ME !)
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If the above post contains spelling mistakes / grammatical errors / poor use of the quote function / a very weak retort, or is generally shyte; it's because I'm feked on a cocktail of drugs,homebrew and carb cleaner.sorry
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dj67blue
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« Reply #8 on: November 02, 2006, 01:57:15 PM » |
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pulled the light just to get thru mot...didnt pick up on it
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Diplo-Matt
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« Reply #9 on: November 10, 2006, 08:31:10 PM » |
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Took a vectra for a test last week and 'convienently' left the garages business card over the top of the ABS light! Worked a treat!
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Carlton 2.6 Estate
Monza GSE
Senator Series A
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Scatmancraig
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« Reply #10 on: November 10, 2006, 11:38:59 PM » |
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Took a vectra for a test last week and 'convienently' left the garages business card over the top of the ABS light! Worked a treat!
The aBS light on the Diesel Estate was covered by a small piece of black plastic. It looked so god i thou8ght it was meant to be there! So i checked under the bonet & under that ar & sure enough the modulator & wheel sensors were all there! So i peeled off the plastic & found that a previous owner had drilled a hole through the ABS light to break the bulb! But it didn't work becaus the bulb still lit up! So i covered it back up again hoping that the prospective new owner didn't see! He didn't even mention it & now owns the car! If i'd have had the chanc i would have swapped the relays, i bet that's all it was in the first place! |
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Rusty Arches
Sr. Member
Posts: 386
Dartford Kent
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« Reply #11 on: January 08, 2007, 10:03:24 AM » |
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Staying on this thread a guy on E Bay is selling some ABS sensors of a Carlton GLI will they fit my Dippy ? |
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Its probably just a fuse
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bstardchild
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« Reply #12 on: January 08, 2007, 11:30:22 AM » |
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Staying on this thread a guy on E Bay is selling some ABS sensors of a Carlton GLI will they fit my Dippy ? Carlton and Senny B ones are all the same Trouble is the fronts are damn near impossible to remove without breaking So if you have identified a front sensor failure the only way to swap the fronts is to swap the whole hub for one that doesn't have a problem Or Buy a new one and fit that |
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Cheers
BC
"The Lotus Carlton is not tail happy – honestly - as long as you accept it has 377 bhp and 419 lb/ft of torque, is rear drive and has no driver aids, it's fine."
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Tetleysmooth
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« Reply #13 on: January 12, 2007, 02:33:05 PM » |
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My problem is my light doesn't come on at all. I've just changed the bulb in the instrument cluster and changed the relay by the n/s suspension turret for a known-to-be-good one and the light still doesn't come on. Where do I look now chaps?
Oh, the fuse is ok too.
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Nils desparandum illegitimi carborundum.
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Murph
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Location: Dartford (Kent)
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« Reply #14 on: January 12, 2007, 02:53:31 PM » |
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There are some more relays under a square cover near the power steering fluid resovoir.
That would be my next port of call.
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Whippit
Kirkcaldy, Fife
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Ut olim ingenii necnon virtutis
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« Reply #15 on: January 12, 2007, 11:24:21 PM » |
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ECU under the passenger seat?
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Murph
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Location: Dartford (Kent)
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« Reply #16 on: January 13, 2007, 12:12:55 AM » |
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Followed by ^^^ that!  |
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Tetleysmooth
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« Reply #17 on: January 15, 2007, 01:00:31 PM » |
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I've now changed the:
Bulb in the dash, I tried several, just in case.
The relay behind the n/s suspension turret.
Both relays in the modulator ( under the p/s reservoir ).
The ECU.
All for known to be working items.
I've checked the fuse.
The light still doesn't come on.
Could it be the printed circuit behind the dash?
I had a word with carlton_mad, and he reckons if it was a wheel sensor, the light would stay on, which I agree with.
What else can I check now fellas?
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Nils desparandum illegitimi carborundum.
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Tetleysmooth
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« Reply #18 on: January 18, 2007, 03:32:15 PM » |
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I've just had the instrument cluster out again, to check for any breaks in the printed circuit.
Took the fuse box out, to check for any wires that may have come adrift.
Still no light.
Has anyone got any ideas. This is all that is stopping me putting the car in for its MOT now.
Can anyone put up an easy to understand circuit diagram of the ABS.
Pleeeeeease.
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Nils desparandum illegitimi carborundum.
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Whippit
Kirkcaldy, Fife
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« Reply #19 on: January 18, 2007, 05:46:41 PM » |
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It passed its last MOT with no light on.
Think they only fail if the light doesnt go off. (Chris?)
Only other idea is to buzz the wiring as per HJB
Or if you know the terminals on the dash run a temporary wire to the live and that will check your circuit board.
If I get really bored later I will dig the HJB out and try to sketch the circuit.
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Tetleysmooth
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« Reply #20 on: January 18, 2007, 06:18:40 PM » |
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Thanks John. So, the light never worked when you had it.
Hope it's not the modulator, really don't fancy that job. Have these been known to pack up?
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Nils desparandum illegitimi carborundum.
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Whippit
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« Reply #21 on: January 18, 2007, 07:24:40 PM » |
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I think if they do go the light stays on.
Besides the ABS feels like it works, no way would it with no modulator.
TBH I can't actually recall if it ever worked or not, but dont recall it ever coming on.
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« Last Edit: January 18, 2007, 07:31:40 PM by Whippit »
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chrismec
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« Reply #22 on: January 18, 2007, 07:32:02 PM » |
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As far as I know the light has to do what it's spose to do ie light comes on with ignition, goes out when engine starts.
As long as it does that it will pass, doesn't matter if it comes on when you drive as tester won't drive car.
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Tetleysmooth
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« Reply #23 on: January 18, 2007, 07:35:38 PM » |
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I suppose the thing to do would be to substitute the instrument cluster, just to eliminate that.
Oh well, over to the wanted section we go.....
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Nils desparandum illegitimi carborundum.
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Dave the Builder
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« Reply #24 on: January 18, 2007, 07:38:38 PM » |
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have you replaced both relays in the underbonet relay box by the wing ? 1 abs relay and 1 abs surge arrester relay,other than the ones in the modulator . hard to tell from these posts so i thought i would say As far as I know the light has to do what it's spose to do ie light comes on with ignition, goes out when engine starts.
As long as it does that it will pass, doesn't matter if it comes on when you drive as tester won't drive car.
apart from when its on the rolling road being brake tested |
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If the above post contains spelling mistakes / grammatical errors / poor use of the quote function / a very weak retort, or is generally shyte; it's because I'm feked on a cocktail of drugs,homebrew and carb cleaner.sorry
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