OEM MK4 management wiring => Mk1/2/3 harness install FAQ (Now with added dieselness!)

Cheers. That makes sense now. I think ill use the large spade N as there is no socket in the plug

 

Just a quick question if anyone can help that would be great. I've wired up 1.8t AGU from 1998 into an 1989 mk2 with ce2 fusebox. Basically I've tried to do it without taking out the loom and I've cocked it up. So I've removed it all now and I'm missing the ECU power a red/green wire only I cant find that wire on the mk4 loom. Which pin on the ecu plug is that wire? It should connect to G2/9 on the mk2 fusebox. I'm having an absolute nightmare with this so any help would be greatly appreciated.

cheers Ray

 

Nice one mate yeah red purple

mistake was with the maf/ lambda wiring should've just removed it all to start with!!

 

Could someone have a read over this please, I want to make an external loom rather than splicing into the cars, Its a mess and i quite frankly cant be bothered with it. This should get the motor up and running? Ill worry about the little bits after.

I know it doesnt need kline to run, But ill do that first incase i get any issues.

Cheers.
Nicky

 

Could you look over the above diagram please mate? It would be appreciated.

 

Thanks mate, Any specific reason why? I did have it on that relay but i didnt see why they were on there so i put them on the ignition one. Id just like to thank you for sharing your knowledge and spending the time to help people out. I truly appreciate it.

Nicky

 

It will make no difference to the loom, Its just as easy to put it to the pump relay. Yeah ill be fusing most of the lives. I just couldn't be bothered putting them into my magnificent ms paint diagram.

Thanks again.

 

Quick MK4 ECU into a MK2 related question.

I think i know the answer anyway, but what are the thoughts on changing the ECU coding to more accurately represent the MK2 specs?

Ie, my MK4 ecu has the coding on the ECU that indicates it is 4wd, Has ABS and has a DSG.

I can change it to the following No 4WD, No ABS and 6 Spd manual.

Common sense tells me that this should be done.

but whats peoples experiences of this, as i've not seen the ECU coding being mentioned.



One other thing to mention, that isn't made reference to in the guide on Pg1, my BDE ECU doesn't appear to drop to earth on the fuel pump trigger wire, it looks like it has a pulsed signal. So will not operate a MK2 fuel pump Relay. It looks like it will need the specific MK4 fuel pump relay.



And just to complicate things further, my BDE ECU, needed to be wired up like a BFH ECU to get it to power up, the VW diagram is wrong.....

 

The 409 Fuel Pump relay is not a basic dumb relay by the looks of it......

http://forums.vwvortex.com/showthre...w-fuel-delivery-questions-02-Jetta&p=84631751

 

A regular relay doesn't buzz, it doesn't work at all. With a multimeter it pulses circa 4v/open circuit

Waiting to pick up a 409, it should fit. If not I have a mk4 relay carrier panel.

 

This is the only post i have foudn where someone appears to experience the same thing, note the 3.4v

http://forums.vwvortex.com/showthre...-409-relay&p=81237857&viewfull=1#post81237857

 

022 906 032 BG as written on the outside of the ECU, and as reported by VAG-COM

Partsbase.org reports this as with PR code 0GG = Emission standard EU4

Note, as mentioned above, this ECU does not wire up like the VW BDE engine Diagrams.....
I'm confident it will work when wired up as per OEM