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C5 (X7) Suspension Pump Failure - Battery Fuses List

suspension wont rise hydraulic failure hydraulic pump

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8 replies to this topic

#1 andyb82

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Posted 19 February 2016 - 09:01 PM

hi, I have a 2008 C5 2.0ltr diesel exclusive.  the suspension has dropped to its lowest position and wont rise again,  the buttons in the car work and they show up on the dashboard display as they should.  theres no sign of any fluid leaks.

 but ive noticed no sound coming from the pump as there usually is as it can be heard when its pumping,  ive checked all fuses including the maxi fuses under the main fuse panel.  ive tried a few local garages but there diagnostic machines will not show up any faults. 

 

ive read somewhere that disconnecting the battery and reconnecting may reset the ECU bringing the pump back to life,  will this work??

the LDS fluid level is also correct..  any ideas please !!!!


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#2 paul.h

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Posted 19 February 2016 - 09:08 PM

Check if the electrical connector on the pump is in place, there was a post once when this had come loose.



#3 andyb82

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Posted 20 February 2016 - 10:04 AM

ok thanks,  i'll give that a look


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#4 paul.h

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Posted 20 February 2016 - 02:53 PM

Have you checked the fuses at the wing side of the battery ? According to a wiring diagram for the mark 3 C5 (2008 on model) fuse 1 there goes to a relay that then goes to the pump. This small fuse box BFDB may have a red cover but the fuses look more like fusible links so might need a dealer to supply them, possibly Citroen part no. 6500AV http://www.ebay.com/...e-/301486224424 .

 

This is from the RTA C5 manual for the 2008 C5 (ISBN 9782726873755  http://www.amazon.co...8/dp/2726873758 ):

BFDB - boitier fusibles depart batterie

F1 40 amp groupe electropumpe - calculateur suspension electrohydraulique (suspension pump and its control)

F2 70 amp biotier de commande pre-postchauffage (glow plugs)

F3 60 amp groupe motoventilateur 2 (radiator fan ?)

F4 100 amp boitier commutation protection 2 relais (relays ?)

F5 30 amp boitier servitude remorque (?)

F6 25 amp prise 12 V arriere + coffre (rear 12 volt socket)

F7 15 amp feux antibrouillard (fog lights)

F8 20 amp bruleur chauffage additionnel (additional heating)

F9 30 amp frein de stationnement electrique (electric handbrake)



#5 andyb82

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Posted 21 February 2016 - 12:20 PM

hi paul.h.

 

                thanks very much for the info about the fuses,  I located them and sure enough the corresponding fuse for the suspension pump had blown,  I replaced it and smoke appeared from the pump and blew the fuse again,  at least now I know I need to replace the pump..

  once again thanks for the help             


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#6 MikeLane

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Posted 21 February 2016 - 05:03 PM

F4 100 amp boitier commutation protection 2 relais (relays ?)  (Changeover box protection -2 relays) (not sure what's changed over though!)

F5 30 amp boitier servitude remorque   (Box for trailer connection)

 

Re: F8 Bruleur usually means boiler ??


Edited by MikeLane, 21 February 2016 - 05:14 PM.

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#7 paul.h

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Posted 21 February 2016 - 07:41 PM

I have edited the title since the fuse list may be of use.



#8 andyb82

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Posted 24 February 2016 - 05:49 PM

after replacing the fuse and discovering the motor had burnt out or seized im finding it incredibly difficult to source a new pump/motor.   im also told that the replaceable unit comes with its own ECU and it may not be possible to swap it from car to car with out having citroen Remap the main ECU so they will talk to eachother.  

 

does anyone have any experience or knowledge of this and is it possible to simply swap the pumps/motors without changing the ECU ???


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#9 paul.h

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Posted 24 February 2016 - 07:44 PM

Looking on the parts diagrams there are a few different part nos. depending on the engine and whether auto or manual and whether supplied already configured against the VIN. For a 2.0 hdi 138 bhp, manual gearbox it gives 5277J9 for one to be configured and 5277K0 already configured. These should be checked using your VIN. The bhi is not supplied separately, unlike on the earlier C5 model.

 

I do not know if the bhi can be removed from the pump but since yours needs replacing anyway I would have a go unless there is a reply on here to say otherwise (also try a message to coastline taxis, he will know). If the bhi can not be swapped you would need to get a pump with the same part no. and then have it configured to your car using the Lexia tool at a dealer or if there is a member in your area with a Lexia they may help (see Technical section for a pinned topic).

 

The parts diagrams can be seen as a free service if you register as another professional non emergency services and a member of the Citroen Owners Club on the service.citroen site and then use your VIN (VIS) top left to find your car. http://service.citro...pages/index.jsp You may need to select your language first. The pump can be found under Mechanical, Suspension.