Citroen C3 Pluriel Roof HELP

[Steva]

Did you reset the roof after installing it on the car so it knows it’s position? If this has not been done the roof doesn’t know if it is in a position that is safe and as a result doesn’t allow the back window or the tailgate to open.

hello
I tried the reset using the button to hold for 30 seconds, as well as the method of removing the battery, leaving it for 10 minutes, putting it back and starting the car through the window. if there is another method, I would be grateful if you know.

[furriegurrie]

That should do it. I don’t know of another method.

[wheeler]

how do i check the grounding of the roof?

You need to check the power supply & ground like i said in the previous post. Use a volt meter between pins 4 & 8 then 5 & 8. check for battery voltage. Ideally also put a 12v bulb (not an LED) across the same pins & make sure the bulb lights nice & bright. If the roof ECU isnt getting power then no other part of the system will either.

[Steva]

replaced the cables on the rear trunk and still no results

[Steva]

how do i check the grounding of the roof?

You need to check the power supply & ground like i said in the previous post. Use a volt meter between pins 4 & 8 then 5 & 8. check for battery voltage. Ideally also put a 12v bulb (not an LED) across the same pins & make sure the bulb lights nice & bright. If the roof ECU isnt getting power then no other part of the system will either.

checked the ecu of the roof motor and the pins with a voltmeter, there is no current anywhere.

[wheeler]

The power supply for the roof ECU comes from fuse 40 of the interior fuse box, check this fuse, if the fuse is ok check that it has 12v at it.

[Steva]

The power supply for the roof ECU comes from fuse 40 of the interior fuse box, check this fuse, if the fuse is ok check that it has 12v at it.

all fuses on the car have been replaced with new ones inside and under the hood. the fuse for the roof 40 gives 12v current.

[wheeler]

Run a temporary fused feed from the battery to pins 4 & 5 of the brown connector on the roof ECU & see if this makes everything work.

[Steva]

Run a temporary fused feed from the battery to pins 4 & 5 of the brown connector on the roof ECU & see if this makes everything work.

for now, I just tested the engine directly via the battery, the roof opens and closes without problems, but as soon as I connect it to the car jack and try using the switches in the car, nothing happens. I will also try via the pins if that will reset the ecu.

[wheeler]

It wont reset the ECU, it will give it power. If you have checked this correctly & there is power at fuse 40 but not at pins 4 & 5 of the brown connector on the roof ECU then i would say this is your problem. There is a splice (EB11) where the output from the fusebox splits into 2 wires to go to the ECU, I'd check this splice.
From there It goes through pins 3 & 4 of connector ICJ7B (6 way black connector), also check you have power here.

[Dormouse]

Pretty dogged determination here.

[Steva]

thank you good sir after checking pins 4 and 5 via the battery, the trunk magically started working even when I removed the voltage. but everything else doesn't work. I checked the wire link from the picture in detail and everything seems to be in the best order. when I try the rear lock on the glass, the famous click of the relay is still heard.

[Steva]

Pretty dogged determination here.

greetings, when you spend two weeks in an ice-cold garage, you have a will

[Steva]

It wont reset the ECU, it will give it power. If you have checked this correctly & there is power at fuse 40 but not at pins 4 & 5 of the brown connector on the roof ECU then i would say this is your problem. There is a splice (EB11) where the output from the fusebox splits into 2 wires to go to the ECU, I'd check this splice.
From there It goes through pins 3 & 4 of connector ICJ7B (6 way black connector), also check you have power here.

thank you good sir after checking pins 4 and 5 via the battery, the trunk magically started working even when I removed the voltage. but everything else doesn't work. I checked the wire link from the picture in detail and everything seems to be in the best order. when I try the rear lock on the glass, the famous click of the relay is still heard.

[Milenko]

Hello to All!
I intend to buy a C3 Pluriel with a problem roof as it is much much cheaper than a completely correct one. It seems to me that I already have enough electrical and mechanical knowledge to fix the malfunction with a little (or a little more ) effort.

My question is:
- What are the most common failures of the roof assembly and in what combination do they manifest themselves with failures and dependence of other parts of the vehicle (as I read that it has an effect on opening the trunk...)?
- Do I need to avoid the offered vehicles with roof leaks? (easily recognized by the dirty spots on the driver's and passenger's seats)

If I missed some post, please, light me up