Abs warning is this MOT checkpoint ?
Moderator: RichardW
Abs warning is this MOT checkpoint ?
Since i had my back brakes done , the Abs warning light is on on the dashboard panel .
The brakes are fine , not sure about Abs 'cos i have nt braked hard enough to test it .
is this an Mot fail point ?/
i can probably just remove the fuse .
xantia 1.9 td sx R reg .
thx
guys
The brakes are fine , not sure about Abs 'cos i have nt braked hard enough to test it .
is this an Mot fail point ?/
i can probably just remove the fuse .
xantia 1.9 td sx R reg .
thx
guys
current : 1997 xantia 1.9 td sx a/c
previous cars :
1997 zx memphis td
1996 zx volcane td
1994 zx volcane td
previous cars :
1997 zx memphis td
1996 zx volcane td
1994 zx volcane td
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Re: Abs warning is this MOT checkpoint ?
Yes, its a fail. Pulling the fuse won't work because when the reg is put on VOSA it identifies the car has ABS and that the light comes on with the ignition and then goes off within 5 seconds of the car starting. If this doesn't happen its an automatic fail.
09 C5 X7 2.0Hdi Exclusive in Perla Nera black (the best colour)
Re: Abs warning is this MOT checkpoint ?
i do know if you pull the fuse ( No. 14 ) out for the ABS on a BX this will put the warning lamp on,
dont know if the same happens with the XANT
dont know if the same happens with the XANT
Regards, malcolm.
current ride a BX 1.7 TZD estate
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layed up roppy 1.9TD XANT estate, now gone to meet her maker
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current ride a BX 1.7 TZD estate
1986 MK1 BX 1.9na D Auto(in Mothman Andy's stable )
layed up roppy 1.9TD XANT estate, now gone to meet her maker
purple and lilac metalic 2CV(VIOLET)registered to her in doors
1972 DS special been layed up aprox 31 years
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Re: Abs warning is this MOT checkpoint ?
The ABS warning light ON indicates that ABS is inactive. Basically the light is ON until the ABS ECU has powered up and successfully completed its self-test. It can't test the sensors until the car starts moving (it waits until the car is doing about 20 mph). The ECU continues to monitor the inputs from the sensors and will indicate a fault if the sensor inputs are apparently nonsensical. After the ECU has detected a fault, it won't turn the light off until the whole system including sensors has passed test. So when a problem has been 'fixed', a road test exceeding 20 mph is needed to clear the fault and get the ECU to turn the light OFF.
The usual causes of the ECU light are bad circuit connections and sensor failures.
Search the forum for threads on the subject for lots more information.
The usual causes of the ECU light are bad circuit connections and sensor failures.
Search the forum for threads on the subject for lots more information.
2011 Grand C4 Picasso VTR+ 1.6HDi in Kyanos Blue
1995 Xantia Estate SX 1.9TD in Vert Vega "The Green Lady" - after 11 years now owned by XanTom
1998 Xantia 2.1 VXD Estate in Mauritius Blue - R.I.P. (terminal tin-worm)
1995 Xantia Estate SX 1.9TD in Vert Vega "The Green Lady" - after 11 years now owned by XanTom
1998 Xantia 2.1 VXD Estate in Mauritius Blue - R.I.P. (terminal tin-worm)
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Re: Abs warning is this MOT checkpoint ?
What was done on the back brakes, and by whom? If they were done by a garage I would be taking it back to them.
James
ex BX 1.9
ex Xantia 2.0HDi SX
ex Xantia 2.0HDi LX
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Re: Abs warning is this MOT checkpoint ?
Thats only applies if you have had a new sensor replaced or such. And not if you have simply changed disks and pads..Old-Guy wrote:The ABS warning light ON indicates that ABS is inactive. Basically the light is ON until the ABS ECU has powered up and successfully completed its self-test. It can't test the sensors until the car starts moving (it waits until the car is doing about 20 mph). The ECU continues to monitor the inputs from the sensors and will indicate a fault if the sensor inputs are apparently nonsensical. After the ECU has detected a fault, it won't turn the light off until the whole system including sensors has passed test. So when a problem has been 'fixed', a road test exceeding 20 mph is needed to clear the fault and get the ECU to turn the light OFF.
The usual causes of the ECU light are bad circuit connections and sensor failures.
Search the forum for threads on the subject for lots more information.
Once that has gone through the test stage and all os ok it should do the light flicker and out after five seconds .. untill such thatca sensor packs in, a relay or more rarely the ecu itself has packed it.
Sharing a pug 207 1.6 hdi Sw 16v.
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Re: Abs warning is this MOT checkpoint ?
Thx for replies , the back brakes were done by a trusted indi and i think it was disc and pad..cant remember because
i went off to usa for 6 weeks right after .
Will find the bill .
i took facia fuse 6 out but it made no difference to the warning light .
It goes in for mot tomorrow morning .
i went off to usa for 6 weeks right after .
Will find the bill .
i took facia fuse 6 out but it made no difference to the warning light .
It goes in for mot tomorrow morning .
current : 1997 xantia 1.9 td sx a/c
previous cars :
1997 zx memphis td
1996 zx volcane td
1994 zx volcane td
previous cars :
1997 zx memphis td
1996 zx volcane td
1994 zx volcane td
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Re: Abs warning is this MOT checkpoint ?
It is VERY likely to fail the MoT. Some things are advisory (such as the side airbag system), others are not (such as the ABS and main airbag system).
When the electronics in a car power up, they run a basic set of start-up tests (not unlike a PC, when it is turned on). The assumption is that, until they pass back a 'test passed' message, the electronics are assumed to be faulty, and the car flags this up. When the tests come back OK the relevant lights are put out. Pulling the fuse for the ABS ECU means that it cannot power up or run its tests, so it must be faulty.
When the electronics in a car power up, they run a basic set of start-up tests (not unlike a PC, when it is turned on). The assumption is that, until they pass back a 'test passed' message, the electronics are assumed to be faulty, and the car flags this up. When the tests come back OK the relevant lights are put out. Pulling the fuse for the ABS ECU means that it cannot power up or run its tests, so it must be faulty.
James
ex BX 1.9
ex Xantia 2.0HDi SX
ex Xantia 2.0HDi LX
Ex C5 2.0HDi VTR
Ex C5 2.0HDi VTR
C5 2.2HDi VTX+
Yes, I am paranoid, but am I paranoid ENOUGH?
Out amongst the stars, looking for a world of my own!
ex BX 1.9
ex Xantia 2.0HDi SX
ex Xantia 2.0HDi LX
Ex C5 2.0HDi VTR
Ex C5 2.0HDi VTR
C5 2.2HDi VTX+
Yes, I am paranoid, but am I paranoid ENOUGH?
Out amongst the stars, looking for a world of my own!
Re: Abs warning is this MOT checkpoint ?
It failed the Mot on that (abs) and front number plate.
Car is booked in on thursday at place that did the brakes
fingers crossed .
Car is booked in on thursday at place that did the brakes
fingers crossed .
current : 1997 xantia 1.9 td sx a/c
previous cars :
1997 zx memphis td
1996 zx volcane td
1994 zx volcane td
previous cars :
1997 zx memphis td
1996 zx volcane td
1994 zx volcane td
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Re: Abs warning is this MOT checkpoint ?
Fingers crossed but the ABS fault must be fixed for a pass. Pulling the fuse will make no difference to the warning light as it's fail-safe. Taking the blub out won't help either as the MOT man is looking for a flash sequence whist the ABS ECU goes through its self-test.
As James says, no light or a light behaving badly is assumed to be a duff ABS and therefore a fail.
As James says, no light or a light behaving badly is assumed to be a duff ABS and therefore a fail.
Jim
Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
Re: Abs warning is this MOT checkpoint ?
All sorted , took the car back to the indi who did the rear brakes , but it turned out to be the ns front sensor , he replaced that
..whole job (for abs) cost £127 . Took car back for free retest and it sailed thru .not bad for a 17 year old car i suppose .
thx for all the comments .
..whole job (for abs) cost £127 . Took car back for free retest and it sailed thru .not bad for a 17 year old car i suppose .
thx for all the comments .
current : 1997 xantia 1.9 td sx a/c
previous cars :
1997 zx memphis td
1996 zx volcane td
1994 zx volcane td
previous cars :
1997 zx memphis td
1996 zx volcane td
1994 zx volcane td
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Re: Abs warning is this MOT checkpoint ?
Ouch! New sensors for Gracie cost me less than £60 the front pair, although I fitted them myself.redzzed wrote:All sorted , took the car back to the indi who did the rear brakes , but it turned out to be the ns front sensor , he replaced that
..whole job (for abs) cost £127 . Took car back for free retest and it sailed thru .not bad for a 17 year old car i suppose .
thx for all the comments .
James
ex BX 1.9
ex Xantia 2.0HDi SX
ex Xantia 2.0HDi LX
Ex C5 2.0HDi VTR
Ex C5 2.0HDi VTR
C5 2.2HDi VTX+
Yes, I am paranoid, but am I paranoid ENOUGH?
Out amongst the stars, looking for a world of my own!
ex BX 1.9
ex Xantia 2.0HDi SX
ex Xantia 2.0HDi LX
Ex C5 2.0HDi VTR
Ex C5 2.0HDi VTR
C5 2.2HDi VTX+
Yes, I am paranoid, but am I paranoid ENOUGH?
Out amongst the stars, looking for a world of my own!
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2008 Peugeot 207 Sw 1.6 16v hdi. 217k and rising
2010 Peugeot 207 SW 1.6 8v HDi 161k and rising - x 71
Re: Abs warning is this MOT checkpoint ?
Mk.1 and mk.2 sensors are quite different.. and with quite a different price too..
thats not a bad price for a mk.1 sensor with fitting to me..
thats not a bad price for a mk.1 sensor with fitting to me..
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project
A very sad...
1994 XM 2.1 d auto
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project
A very sad...
1994 XM 2.1 d auto