So I recently purchased a skoda fabia mk I (2007 6Y1).  The drivers door lock has a non serviceable lock and is broken (can buy a new one one day), so I figured a remote locking system would be fine, with the passengers keylock as a back up.  I looked through this forum to someone that had installed one of these units before with a wiring picture of how it goes on the unit.  So far so good.  Figured I could access the passenger door wiring easier, so I disconnected the door in the bellow and trial and errored the four pin plug, shorting the blue/red on the blue/red- and blue/purple minus.  Figured that since it cycled the locking on the car, it was all good.  Plugged it all back together....

Now the passenger door won't stay locked, it locks, then immediately unlocks with the internal locking.  External locking with the key still functions like it should, and the door light also goes out when the door is shut.  I've got no idea.  Tried disconnecting the battery for a few hours to kill everything, didn't stop it from happening.  Can do some pictures if someone needs to see it to pick up what I'm putting down.

I don't know that this is the case here, but central locking systems usually unlock themselves in cases where the control unit detects a non-working lock.

8 hours ago, KenONeill said:

I don't know that this is the case here, but central locking systems usually unlock themselves in cases where the control unit detects a non-working lock.

I would have also thought that, but the lock still works perfectly from the key from outside.  Really odd and no information to be found on google about only one lock doing it only from internal.  On another note, the little red LED on the drivers side started working after not functioning before I played around with it.  I don't really want to take the door panel off and look at the wiring/lock in the door, as this is the cheap pop riveted door panel version.

Could you link to the system you have fitted, or the post on here where it was discussed? 

Are the red/blue and blue/purple wires that you have connected into still connected to their original wiring behind the dashboard too?

20 minutes ago, Wino said:

Could you link to the system you have fitted, or the post on here where it was discussed? 

Are the red/blue and blue/purple wires that you have connected into still connected to their original wiring behind the dashboard too?

That is the link, I figured it was the best information I could find, although I think my main issue is I might have confused the computer or broken something.  The picture is of the wiring.  If anyone knows that it is wrong, or has a wiring diagram for this models locking system that would put me in a better direction, that would be great.  I thought about attaching the remote locking directly to the relay outputs in the dash, but after taking the drivers side apart, I realised the central locking relay is not actually with the rest of them.

 

I'm new to European cars, as I've only ever owned japanese vehicles, (a nissan diesel and toyota petrol, both out of the early 90's).  They tended to have very simple systems and easily accessed, so I'm sorry if I come across as a complete idiot.

 

Bl/red to Wh

Bl/red to Y

Bl/purple to Y/Black

 

Upon looking at it and trying the remote after locking it with the key, it is apparent that that is incorrect wiring anyway, as the Bl/red positive signal disappears when locked with the key.  I tried disconnecting everything and seeing if it would all go back to normal (although I am aware that the remote box is plain NO clean contacts anyway) and nothing changed. Still the passenger side will lock, then unlock from pressing the drivers door lock in, and also the passenger door won't central lock the car from the inside anymore either.

 

In case anyone wants to say my splice joins look ****, I am aware of that too - corona makes it hard to pop to the shop to get things these days.

Hmm, not sure the Octavia 2 is necessarily going to work like Fabia 1, but it might.

 

The relays that power the lock motors are within the so-called Central Convenience Control unit, which lives somewhere above the accelerator pedal on Left Hand Drive cars.  

 

It is possible to convert key-operated central locking in Mk1 Fabia to radio remote operated central locking, with OEM parts, which may have been a better path to follow. 

I don't remember if there's a "how-to" guide on this forum, but there's one on Clubpolo.co.uk (9N polo is more or less identical to Mk1 Fabia electrically).

1 minute ago, Wino said:

Hmm, not sure the Octavia 2 is necessarily going to work like Fabia 1, but it might.

 

The relays that power the lock motors are within the so-called Central Convenience Control unit, which lives somewhere above the accelerator pedal on Left Hand Drive cars.  

 

It is possible to convert key-operated central locking in Mk1 Fabia to radio remote operated central locking, with OEM parts, which may have been a better path to follow. 

I don't remember if there's a "how-to" guide on this forum, but there's one on Clubpolo.co.uk (9N polo is more or less identical to Mk1 Fabia electrically).

That was what I was also under the impression of, but this model seems to have the relays not in that position.  When the CL is activated, the relay click sound is coming from behind the central portion of the dash, requiring me to remove most of the dash to access.  I did disassemble above the pedals, as the information I had at the time made me look there, but it only has the main relays, and then 4-5 relays incorporated into the voltage control board (black box) that clips in above the clutch (LH driver side). I can post a picture of it disassembled if necessary

This is the Central Convenience unit:

 

This is the only unit that I can see sitting under the drivers side, as said earlier, the CL relay sounds like it is sitting in up and to the right of the accelerator pedal, quite inaccessible unless I dismantel the whole dash, which I really hope I don't have to do.  Even if I can just have it all back to how it originally functioned, and then when I have some spare money, buy a manual with all the drawings. To see what I have actually tapped into on a wiring schematic would show where I've gone wrong.

8 minutes ago, goentillsundown said:

the CL relay sounds like it is sitting in up and to the right of the accelerator pedal

Yes, as I said, within the unit I posted the picture of.  Removing the footwell air vent gives better visibility (or does on RHD cars anyway).

 

Anyway, unless you do decide to convert to OEM radio remote C/L by changing that unit, there's not much to be gained by accessing it. The relays are soldered into the circuit board.

There's a how-to thread in the Fabia Guides section for changing the evaporator temperature sensor which contains photos showing the location of the CCU on RHD cars, maybe even for LHD too.  They are mirror image either side of the central dashboard area, I guess.

 

The circuits relating to the locking system are complex; involving the lock module, the window motor module and the central convenience unit.  You can download the entire schematics for the whole car via erWin Skoda, after paying a small fee.  Some of these have escaped into the public domain but I'm not sure that the one for the latest mk1s (May 2006>) is freely available.  

 

What's wrong with the driver's side lock? Just the mechanical key-barrel part or?? I believe there are repair kits for the key barrel available cheaply.

 

 

 

 

3 minutes ago, Wino said:

Yes, as I said, within the unit I posted the picture of.  Removing the footwell air vent gives better visibility (or does on RHD cars anyway).

 

Anyway, unless you do decide to convert to OEM radio remote C/L by changing that unit, there's not much to be gained by accessing it. The relays are soldered into the circuit board.

There's a how-to thread in the Fabia Guides section for changing the evaporator temperature sensor which contains photos showing the location of the CCU on RHD cars, maybe even for LHD too.  They are mirror image either side of the central dashboard area, I guess.

 

The circuits relating to the locking system are complex; involving the lock module, the window motor module and the central convenience unit.  You can download the entire schematics for the whole car via erWin Skoda, after paying a small fee.  Some of these have escaped into the public domain but I'm not sure that the one for the latest mk1s (May 2006>) is freely available.  

 

What's wrong with the driver's side lock? Just the mechanical key-barrel part or?? I believe there are repair kits for the key barrel available cheaply.

 

Okay, I will have a look.  I'm usually an electrician, so a bit of soldering isn't an issue for me, just don't want to be going in blind.  I'll look up that erWin Skoda, since it may just be the best bet to figure out exactly what I have shorted and done without a big unbuild.  My car is the basic of basic and has manual windows and mirrors etc, only central locking as a comfort (well that and A/C, but that is neither here nor there). 

 

The key barrel won't engage with the armiture that turns the paddle, as it looks to have shorn off.  It is not of the design that are serviceable though, so I would have to replace the whole unit and have a key that only opens the DS door, which is also a bit dumb, unless I replace the other side and ignition, which also goes in the ****-it bucket.

 

There's a version you can download that's similar, but doesn't include the connections via the window motor modules, via this link: MK1 Fabia workshop manuals - SKODA Fabia - BRISKODA

Choose Fabia CFD MY 2003...

Because you don't have the window motor modules, it may well be exactly what your car has.

if you do a search for "F221" once you have the pdf open, it will take you straight to the passenger side lock wiring.

Edited 14 May, 20215 yr by Wino

5 hours ago, goentillsundown said:

The key barrel won't engage with the armiture that turns the paddle, as it looks to have shorn off.  It is not of the design that are serviceable though, so I would have to replace the whole unit and have a key that only opens the DS door

Not as such; OK it means going to a Skoda dealership, but if you quote them the chassis number and show them the registration document (is that a V5 in Germany?) they should supply a new lock matched to your existing key.