Though the motor drives my sunroof back and forth, it won't do so under the control of the "ECU" attached to the motor. LR want £400 for a new one (motor/ECU combo).

It is:




A Hall-effect sensor...
A 12V relay...
An integrated circuit...

What a rip-off! I'm happy without a sunroof - for £400, I'll employ a punka wallah on the rare occasions I feel like it.

Iv'e not used one myself, but there are companies who will repair ECU's for a fraction of the price of a new one. My lad had a repair on the ECU on his Civic type R after which it was fine, albeit his is a rather unsophisticated ek9.

all part sales are a rip off

buy a used one. £50?

If you ebay search L320 sunroof motor you’re looking at £200 to £300! If you search FIAT, Renault etc. £30 to £40!!!

https://www.ebay.co.uk/itm/Fiat-Grande-Pun...SwE9pb6Jvf

You’d maybe need to check part numbers or may swop the eprom?

RRS L320


FIAT
 2019 5.0 SC SVA (Current)
2012 5.0 SC AB. Sadly written off by a campervan
23 plate Focus ST (Current)
1942 VEP Ford GPW Jeep (Willys) (Current)
1943 Whites M16 Halftrack (Current)
16 plate Eurofighter Typhoon, 2 x Eurojet engines with 20,000lbs thrust each. 1380mph

Or a Honda Civic Motor for £25 free p&p

https://www.ebay.co.uk/itm/06-12-HONDA-CIV...SwZJBX~cgb


 2019 5.0 SC SVA (Current)
2012 5.0 SC AB. Sadly written off by a campervan
23 plate Focus ST (Current)
1942 VEP Ford GPW Jeep (Willys) (Current)
1943 Whites M16 Halftrack (Current)
16 plate Eurofighter Typhoon, 2 x Eurojet engines with 20,000lbs thrust each. 1380mph

It will be specific for rr can bus I expect.

Quote:

It will be specific for rr can bus I expect.

A cunning-plan ruined by reality!

If the ECU was good but the motor kapput this would have been a good route to take. Cheers

Still, interesting that Webasto do these as well as heaters,

Could a competent person with the knowledge to download from the chip reprogramme the replacement with the software from the original? The guy on the Disco 3 forum does this with the FFRR L322 clocks into a L320. If it’s £300 versus £30 + a reprogramme it would still be worth it. Maybe even worth just have a spare for the mechanicals. 2019 5.0 SC SVA (Current)
2012 5.0 SC AB. Sadly written off by a campervan
23 plate Focus ST (Current)
1942 VEP Ford GPW Jeep (Willys) (Current)
1943 Whites M16 Halftrack (Current)
16 plate Eurofighter Typhoon, 2 x Eurojet engines with 20,000lbs thrust each. 1380mph

what I tend to do with these things, if your cleaver. and I suspect you are!
is disconenct the relay drive coils from the circuit and connect to switch outputs, therefore having a very basic drive to open close the roof.

It will work 24 hours a day, and not good if you have kids as safety bypassed

I do it all within that circuit, so its plug n play. So a replacement can be fitted at a later date if you or new owner find a replacement cheap.

I did this with a renault window motor.

Last edited by Andy K on Fri Nov 30 2018 3:17pm. Edited 1 time in total

^^^good idea.

I did wonder about uploading the firmware to a unit from something cheaper, but suspect it will need some special software to upload it.

...can anyone suggest where I might get a wiring diagram / pin-out? I don't have the rights on Topix and Google has let me down.

If not, multimeter, here I come!

switch is negative switch

9 green/white OPEN
8 orange/yellow CLOSE

1 brown/red battery power
10 black earth
3 red LIN-Bus

Cheers
Col

Thanks.