Had a look at the wiring on the cooling fan module where the fan wiring goes. Looks like someone has bodged wiring as the aircon wire looks like it is spliced into an existing wire.

Anyone got a wiring diagram of the fans,aircon and module

cheers

Mark

I've got wiring diagrams for these on my laptop but not able to post up

will look for my wiring pdf's

Bazaa

That would be much appreciated buddy

Had a look at the wiring on the cooling fan module where the fan wiring goes. Looks like someone has bodged wiring as the aircon wire looks like it is spliced into an existing wire.

Anyone got a wiring diagram of the fans,aircon and module

cheers

Mark

What colour wires?

Hi Mark here is links to wiring

Aircon/fans Wiring

This legend is to show you the colours for the wires ,fans are M6-1 & M6-II, cooling fan module is A95/A163

Legend

If this doesn't seem right or you dont understand anything let me know as there are a few different diagrams to choose from. might be easier for you to pop down to cosham to see them on the screen and compare your wiring against my cars.

Bazaa

What color wires?

Had a quick look and the wire that was cut is a green / black thin one.

You can just see it on the left side of pic (pointing up wards) to fan. After I removed the plug connector and cooling module from under battery tray, i could see someone had down a real number of it. The 2 wires coming from the air con compressor I think a black and a red wire. one of those wires has been spliced into the green/black part that is still in the plug end. I know the air con needs the small fan on to work so perhaps the bodge was to force this. Either way a mess

Here are the pics. not clear i know but ran out of time

Hi Mark here is links to wiring

Aircon/fans Wiring

This legend is to show you the colours for the wires ,fans are M6-1 & M6-II, cooling fan module is A95/A163

Legend

If this doesn't seem right or you dont understand anything let me know as there are a few different diagrams to choose from. might be easier for you to pop down to cosham to see them on the screen and compare your wiring against my cars.

Bazaa

Cheers will take a better look later. Thanks for the offer to check your car out, would of done that but my friend came round this morning with his VRS but was a waste due to the crap weather. Then my PC crashes and i had to rebuild it and reload XP. What a month I am having. :'( . Luckily i have backed up the important data on external drives.

will let you know how i get on, but also have it booked in for JKM Wednesday if i can't fix it.

There is a 4-pin connector that clips into the plastic bracket attached to the starter motor.

This connector carries the two alternator signal wires and the two wires to a/c magnetic clutch. All four wires are in a sleeve with main alternator cable. It is common for the wires at this connector to go brittle and fail.

The clutch wires are the green/black wire from pin 10 of the fan controller and a brown/black earth wire.

It looks as though someone has taken the wires direct from the fan controller to the a/c clutch to avoid replacing the alternator loom.

There is a 4-pin connector that clips into the plastic bracket attached to the starter motor.

This connector carries the two alternator signal wires and the two wires to a/c magnetic clutch. All four wires are in a sleeve with main alternator cable. It is common for the wires at this connector to go brittle and fail.

The clutch wires are the green/black wire from pin 10 of the fan controller and a brown/black earth wire.

It looks as though someone has taken the wires direct from the fan controller to the a/c clutch to avoid replacing the alternator loom.

Cheers buddy, Now that starts to makes sense. As I had poor connections some time back on the alternator and the dash charge light came on. I however fixed that by cleaning all the wires up and connections and at that plug/connector on the gearbox/starter motor and sprayed with electrical silicon spray. All was well after that. Perhaps the guy before me was not so patient and just bypassed that part of loom when aircon was playing up. I will have another check weather permitting and try to put back to std.

cheers again

Mark

Having a quick look at the diagram and your comments rwbaldwin it looks a very strong possibilty that is exactly what has occured, in that a previous attempt at making the aircon fan work lead a previous owner to bodge the wiring instead or rectifying the std wiring which i would guess had poor connection or corrosion and has opted to leave the original loom in place dorment and take the aircon wires direct to the cooling module.

Either way my fans are now not working so either the bodged wiring has caused this or maybe fuse or cooling module given up. The fans do work if i take 12v direct to them.

The fuses for the fan controller/fans are...

the middle of the five big fuse links on top of the battery

the middle of the three green fuses on top of the battery

IIRC, the other is F16 in the fusebox.

I wonder where the bodger got the ground for the a/c clutch from. Are the large brown/black wires from the fans connected to ground?

The fuses for the fan controller/fans are...

the middle of the five big fuse links on top of the battery

the middle of the three green fuses on top of the battery

IIRC, the other is F16 in the fusebox.

I wonder where the bodger got the ground for the a/c clutch from. Are the large brown/black wires from the fans connected to ground?

Cheers will take a look, don't think the thick wires have been altered.

Well had a better look today and had a friend with his VRS to help check this difference in wiring.

So i can confirm the original loom has been bypassed, so suspect a previous connection / wire corrosion issue.

Today we verified the std loom from a/c clutch was bypassed past this plug, even though the 4 wires look as they should.

the aircon wires were cut the other end and a new section was used to go direct to the cooling module. Although that would work and probably did it looked and was a complete bodge so i went about getting the wire to route as std.

I cut the excess wires off and added new wires to the existing loom.

Then connected that section back up after confirming voltage was found at each end.

The went to the cooling module and cut the added crud wires off and added new lengths and tidied them up

And after doing this , still no fans..... :S

Anyone ideas folks..

I checked voltage to the plugs and all is well, the fans work independently so i now suspect the cooling module

Found a few on ebay that look like this one. I can bet they are costly new.

Anyone know the correct revision for the VRS as all the Skoda and VW's with aircon seem to use the same one apart from the last revision number being different. I expect the latest revision would work on all these cars with aircon but just checking.

Also I noticed that my fuse box on top of battery the far left black cable is lifting slightly as the screw appears to being pulled through the plastic, so will replace that too.

pic here

Are you sure the middle green fuse hasn't blown? - it looks a bit different to the other two.

Are you sure the middle green fuse hasn't blown? - it looks a bit different to the other two.

Yes positive that is ok.

First thing i checked after you points of reference.

Yes positive that is ok.

First thing i checked after you points of reference.

Just had a look at my notes - it's actually the green fuse nearest the big fuse links.

£120ish retail for a new module

The module should have 12V on ...

pin 4 of the 14-pin connector (red/green)

pin 9 (marked 15) of the 14-pin connector (red/green) - This is from Terminal 15 so the ignition needs to be on.

pins 3/4 (marked 30a/30b) of the 4-pin connector

Just had a look at my notes - it's actually the green fuse nearest the big fuse links.

£120ish retail for a new module

The module should have 12V on ...

pin 4 of the 14-pin connector (red/green)

pin 9 (marked 15) of the 14-pin connector (red/green) - This is from Terminal 15 so the ignition needs to be on.

pins 3/4 (marked 30a/30b) of the 4-pin connector

Well after replacing the crud wires yesterday and still no joy i just unplugged all the top green fuses and swapped them over with each other. And would you beleive re checked aircon and fans kicked in. Horray.So I replaced fuses to "as was" and the fans now work. It must of been some wierd connectivity issue. So to be safe i wire brushed the fuses and sprayed electric spray into the connectors. Fans are now working so not sure if they come on when engine gets warm or over 90'. Is it 90' that they should kick in? So is it worth doing the checks you mention above on controller or waste of time now. Hopefully all is now well.

cheers

Well after replacing the crud wires yesterday and still no joy i just unplugged all the top green fuses and swapped them over with each other. And would you beleive re checked aircon and fans kicked in. Horray.So I replaced fuses to "as was" and the fans now work. It must of been some wierd connectivity issue. So to be safe i wire brushed the fuses and sprayed electric spray into the connectors. Fans are now working so not sure if they come on when engine gets warm or over 90'. Is it 90' that they should kick in? So is it worth doing the checks you mention above on controller or waste of time now. Hopefully all is now well.

cheers

I think the controller is OK.

Make sure one of the green fuses doesn't have a hairline crack in it. Take the fuse out and gently push the conductor left and right to check for a break.

Fan stage 1 kicks it at 95°C and stage 2 kicks in at 102°C. IIRC, once on they stay on until the temp drops below 88°C.

Well done mate. Glad its sorted.

good result - well done

Glad it's sorted Bowders

Cheers guys perseverance does pay in the end. Saved me approx 140 notes of quoted labour even before parts were added.