Abs Esp And Handbrake Faulty C4 Grand Picasso

[grahamew2]

I have just replaced the clutch on my C4 Grand Picasso 1.6 hdi. All went ok and is working fine but after restarting the engine i have ABS , ESP and handbrake faulty warning lights on the dash and

the handbrake will only work manually. I have checked and as far as I can see everything is reconnected. All was working before the clutch was replaced.

Has any one come across this problem before. Is it a case that it just needs to be reset?

 

[coastline taxis]

1st thing it recheck your work. youve probally caugh/missed/damaged a wire if not you need a  diagnostic to see were to start

[grahamew2]

already done all that several times  thanks

[paul.h]

Just had a quick look at the procedures for clutch replacement and seen the engine/gearbox has to be removed, so quite a big job compared to most cars.

 

When you disconnected the battery this needs to be done allowing time for the bsi to shut down but if done quickly can give odd electrical problems. On the C5 technical section there is a procedure in the Common Problems pinned topic I have used many times when disconnecting/reconnecting the battery.

[grahamew2]

Thanks I will give that a go tomorrow.

 

What is the BSI ?

[Rookie2]

BSI = Built in systems interface, its the part of the car that talks between the ecu and the vehicle systems (or at least thats the way I understand it)

 

Hi Graham, if the above advice does not work then try the following...

Disconnect the battery terminals, connect the positive battery lead (Thats the red lead, not the battery terminal) to any good earth on the car for approx 30 seconds.

 

Reconnect the battery and switch on the ignition. At this point you may have to enter the radio code and you will also find that most of the customer applied options (if there were any) have gone back to factory default.. This operation tends to set all options on the car back to what they were when it left the dealers

[grahamew2]

thanks for that but I have just tried all that but still no joy.

[Rookie2]

Ok Buddy, this may or may not help but it is what I would do if I had the same problem.

 

Theres a company in Bristol called HDi Tuning- remap@hdi-tuning.co.uk

 

The owner is called Steven Lewis, he's a very helpful and friendly guy who only deals in HDi ecu's. I used him to rewrite my C8 ECU and it was all done via email.

 

Send him a message (he is prompt at getting back you), certainly worth a try

 

cheers

[coastline taxis]

get the car plugged into a diagnostic  go to abs codes and it will tell you wich sensor is off/ Then either replace it or check the wiring to it.  . you will of taking the driveshafts out and thats were your abs sensors are and you've probably banged one when reassembling them.

[Rookie2]

I think  Coastline is probably correct. If you have dislodged or damaged the abs sensor then the ecu thinks the wheel is still turning when the cat has stopped, or, it thinks the wheel has stopped when the car is moving. Consequently the Electronic Stability programme is thrown out of kilter as is the auto handbrake which is fooled into believing the car is moving when it's not.

[grahamew2]

have had it plugged in and showed that left hand abs sensor has a fault. have ordered a new one and going to fit it tomorrow.

[Rookie2]

Great news, take care fitting it,