My C5 Won't Start

[Guest ibexman]

Hi

I'm new to this site. I have a Citroen C5, 2001 model. Lasy year I took it to the garage to have the suspension system changed, from hydraulic to manual. This was succesfully done. When the mechanic tried to start it, it wouldn't start. Replaced the battery with new one, still won't start. After further diagnosis, discovered that there was no power supply to the ECU but we can't still detect whats causing this and the car has been failing to start. Any similar experiences and possible solutions that you can share would be much appreciated.

[paul.h]

Have you checked the fuses in the engine fusebox (including the maxi ones under the top fuse area) and the fuses in the cabin ? What did you do to disable the suspension electronics ? What effect has the mod made to your insurance ?

[coastline taxis]

I took it to the garage to have the suspension system changed, from hydraulic to manual.

 

 

 

Please please please tell us what was done and any pics if possible

[Guest ibexman]

The fuses have been checked and even cleaned. They are perfectly fine.

[paul.h]

Have you left the suspension pump and all the electronics in place and still fused up (pump maxi fuse no. 8) ? If not, have you written them out of the software or whatever is needed ?

 

Haynes does not show a wiring diagram for the suspension system but there is one in the French RTA (ETAI) manual. This shows that the pump and its electronics are connected to the main BSI system. So as a guess, it could possibly mean it needs the suspension system electronics working for the rest of the car to work. When you unlock the car on the remote the suspension works to set the car at the right height so there must be connections within all the electrics.