2007 Citroen Picasso Air suspension fault.??

**407ron** · 29th April, 2012, 09:36 PM

Hi All,
A local mechanic came to me with a 2007 Picasso Exclusive where he replaced the rear left sus air bag...When I plug in lexia it comes back with two faults..
1) C1629 compressor relay open circuit (permanent)
2) C1196 Height Change inconsistent coherent

looking through my own sedre ele drawings I cannot see a Relay...The compressor seems to be feed directly from the sus ecu from the 28 pin black connector pin 2+ feed & pin4 - feed going to a 2 pin black connector on the compressor where pin 2+ and pin 1- (2 feeds to 2 and 4 feeds to 1)

Have any of you Citroen tec's come across this problem before...?
If so I would appreciate some help on this on.
Thanks Ron.

Vin number VF7UA9HZH45223795

**obd.tech** · 20th July, 2012, 12:57 AM

Did you fix this ron?

i have got a dispatch van with the rear suspension upon max height.......with the matching fault code 2 you had.
Can't seem to lower the height......any ideas anyone?
tested with lexia.....things seem to 'click' but no downward travel.

Thanks obd

**Meat-Head** · 20th July, 2012, 01:45 PM

cool, would like to bump this for education or enetertainment purposes.

seem to think there a switch in the trunk, kick it, plug in Lexia see what happens.

sadly it was only a quick look, but had one - apppeared to be airleak and shut down, got it up then it dropped after 1/2 hour.

GUESS and ONLY a guees, same as Merc Vito

two sensors, THREE valves, compresser.

indepently conteolled, check the door interior lights are working properbly

got to go, got some crettin waiting for me.

**obd.tech** · 20th July, 2012, 10:19 PM

Originally Posted by Meat-Head

cool, would like to bump this for education or enetertainment purposes.

got it up then it dropped after 1/2 hour.

Don't tell all the Girls

Meat-Head-Motors will get a reputation

on topic.....thanks.....lexia door functions, switch, actuations etc live data worked all ok........but no droppy down.
Will update when van returns for investigation/leak install. :

:

obd

**Meat-Head** · 21st July, 2012, 12:03 AM

is it possable it's a thick builders van and it's overloaded and stuffed it?

Also is it possable the suspenshion has seized or got bent?

**i_shot_the_sheriff** · 21st April, 2016, 08:49 AM

Got a Citroen C4 with C1629 ,,,, no relay as far as i see,,,

A friend suggested that the compressor relay goes faulty from inside the ecu !! Does anyone knows where the suspension compressor is located?

**Meat-Head** · 22nd April, 2016, 06:21 PM

Would like to say no, but think n/s in the trunk.

jack it up follow the funky air pipes

**i_shot_the_sheriff** · 23rd April, 2016, 07:06 AM

Completely right my friend ! And this was the problem.... used one works like a charm ,,, but it needed height programming by the dealer

**Meat-Head** · 23rd April, 2016, 07:49 AM

Bit late now, height, space the sensor with washers & deny it.

how long time and much money dealer stung you?

**i_shot_the_sheriff** · 23rd April, 2016, 07:51 AM

I'm way to happy ! 30 Euros for it and my customer is happy

**Foggy79** · 14th October, 2017, 09:24 AM

Originally Posted by i_shot_the_sheriff

Completely right my friend ! And this was the problem.... used one works like a charm ,,, but it needed height programming by the dealer

Sheriff are you saying you replaced the suspension ecu, compressor or the relay, I've got the same fault, c1629, it was intermittent but now perminent

**autoden** · 15th October, 2017, 07:41 PM

On the odd time i have to change the bag on Citroen, i always fit original. Aftermarket ones gave me problems. Sometimes its better to remove it all and fit springs/shockers. Guy near me does the complete kit for good price, and after sales support to turn off with lexia/diagbox.