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[Migv6 le Frog Fan]

Not difficult as such, only held in place by one bolt. The problem is the fronts almost never come out without having to break them up to get them out. Rears are pretty much the same as changing a crank sensor.
I had ABS light come on a while back and "my naff code reader" pointed to n/s rear speed sensor.
Changed it and its been fine since. Still probably more likely to be ABS ECU than anything else though.

[biggriffin]

I'd suggest a genuine, non ECU fault.

Just use it as normal but remember you have no ABS, so don't drive like a certain admin.

Fixed it.

[henryd]

Many thanks for all the ideas ..  fusible links checked, new fuse tried,plugs by battery reseated - bloody horrible task - tyres checked.. still all the same size !! tyre pressures all within 1 psi /axle, 5 psi front/rear. unable to check each wheel sensor area due to ground conditions/laziness!!. Pikey coolbox is parked up and will remain so for a few days more !! Car did 150 miles yesterday  (Puy du Fou is FANTASTIC!!!!!!) with the lights on all the tims but no other problems. Probably a visit to Jamie to get the sensors read when we get home. many thanks ... let the drinking and eating continue .. 

It certainly is ,I've been twice and enjoyed it a lot,did you get to see the birds?.

[TheBoy]

I'd suggest a genuine, non ECU fault.

Just use it as normal but remember you have no ABS, so don't drive like a certain admin.

Fixed it.

I know, that AutoAddict is a lunatic....

[Entwood]

well .. "My Naff Code Reader" has arrived, been installed (software version 081016 is there a later one ??) and it says that both front left and rear left sensors are "open circuit".

I somehow doubt that both failed at the same time, so I'm guessing there must be a common point somewhere in the circuit that is damaged/loose .. question is ... where ?? Anyone any ideas on where all the wires/plugs are for the ABS system ?? or how I can get hold of a circuit diagram for the ABS system ??

If its not a loose wire/connection then it has to point at internal ECU I guess ??

[TheBoy]

No discussion of illegal software here please

Haynes book of rubbish has the wiring diagrams. Use the "Later Models", as the ABS is the same as the MFL setup

[Entwood]

Does anyone have a picture of the underside of the ECU ?? or one of the electrical connections ?? feeling with fingers there "might" just be a loose wire or something under there that I can't see... although if there is I have no idea how to get it plugged back in !!

[TheBoy]

Does anyone have a picture of the underside of the ECU ?? or one of the electrical connections ?? feeling with fingers there "might" just be a loose wire or something under there that I can't see... although if there is I have no idea how to get it plugged back in !!

If you can wait til tomorrow, I have a (broken) DX in the garage. But its just one large multiplug....

[terry paget]

Does anyone have a picture of the underside of the ECU ?? or one of the electrical connections ?? feeling with fingers there "might" just be a loose wire or something under there that I can't see... although if there is I have no idea how to get it plugged back in !!

here's the plug.
https://www.dropbox.com/s/99042vm3aal7ymz/ABS%20ECU%20PLUG60%25.jpg?dl=0

[TheBoy]

Actually, thinking about it, there may be a 2 wire plug underneath, hold on a sec

[TheBoy]

tis implies not.

[terry paget]

2 wire plug seems to drive the pump motor.
https://www.dropbox.com/s/338p8e7dwvut7q6/ABS%20motorCABLE60%25.jpg?dl=0

[Kevin Wood]

Yep, there's a 2 pin plug to the motor on the valve body.

[Entwood]

Many thanks to all for the info .. t'would seem the wires my fingertips are feeling are probably those to the pump then ....  and the chances of it being a loose wire are remote.

"My Naff Code reader" when ABS/TC selected tells me the current system ID is 0x0114 but only gives me options of

0x0101 ABS 5.3/5.4
0x0102 ABS 5.3/5.4 + etc
0x0105 ABS 5.3/5.4
0x0110 ABS 5.3/5.4 + etc

I've been using the last one on the grounds its the nearest, but am getting the following results

Everything plugged in normally ...

0035(4)Left rear wheel sensor open circuitleft front wheel sensor open circuit

unplugging the rear wheel sensors and swapping them over ...(left to right and right to left) no change at all

leaving both unplugged .. no change at all

leaving either one unplugged .. no change at all

Unplugging either or both front wheel sensors .. also no change

So, no matter what variation of sensors plugged in or not the fault always remains front left/rear left....

Question now is .... is this a result of the "wrong" protocol being used-  0x0110 instead of 0x0114 - or is it an indication of an ECU failure ??

Unfortunately my thinking is the latter .. and what a pain it is going to be to change it ...

[Kevin Wood]

Did you drive it in-between swapping the sensor wires over?

I think it needs to see a few MPH before the ABS ECU initialises and it probably throws up codes at that point, if wheel speeds don't match closely enough to be plausible, or if any are missing.