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

hi john i just checked my engine type its agn engine and i hope the pictures will work on this webiste cause i inserted two pictures from the ecu .
the egine ive got is with the wiring loom to the ecu so i dont know if what part i should need for it . is the wiring loom one piece or do you have like more pieces in it .
and last question if i wanna make a wiring loom myself do i need the Original one from the engine to make it fit in with my Original wiring loom . ok lol doesnt seem to work to post a picture here ill tell you whats on the ecu ok : 06a 906 018 gc from bosch hope thats enough for you to work with oh and its from a petrol seat Toledo with a non electric gas pedal

greetings david .

 

ok cool thanks fro the help with this . so all i have to do is get the whole wiring loom for a 1.8 20v engine agn .
and do as you told me ?
so it isnt that much of a work right .

think ill go and find a wire loom for the new engine and read a lot on here and try to make it work .

thanks very much and hopefully i wont be back on here only to tell you it works .

greetings david

 

Can i ask something more Audi A3 related. I make a BigTurbo A3 1.8t with Holset HX35 and i swap the ECUs. The car is pre facelift 1.8t AGU and i swapped the ECU,dashboard and key from facelifted 1.8t AUM. The car runs with all the mods in the tread ( swapped cables between orange and brown t6 and etc) but i have a little problem. The rpm gauge in the facelift dash doest work and the vag com port do not work. When i connect a obd directly to ecu i read it without problem...when i pkug the cable in original port of the car...it dont read ecu. What should i do to run tge rpm signal between pre and post facelift dash? Also i think to disable the immo and to try to run the car with prefacelift dash...the facelift one isnt good looking in this setup i think

 

So in general i must make a connection between pin7 at OBD to ECU, and run the 2 wires from the ecu loom to dashboard and all will work...
do you think that there is a way to run pre facelift dash with the AUM Ecu?

 

Yesterday i give the ECU to a keymaker or locksmith...i dont know which word is more up to the sense of the job. They switch off the immo and now it fires up without problem. This news is superb. I want more prefacelift dash than postfacelift. I hate all the canbus light checks and etc that fires up with facelift loom on non facelift car

 

Hi All,

Ok so i will be running an AGU engine on Emerald K3 management.

I have been through the AGU engine loom and tested all wires to make sure they are good, from this i will only remove the speed sensor wiring, and either re-use the barometer wiring for the MAP sensor or remove and run new wires for this.

Few questions though, power wise, i am using the 14 way plug and vehicle side wiring to provide Main earth (back to battery) along with Coil power, Injector Power and Power for valves (just n75 on the AGU i think)
Also i need 2 power feeds for the ECU (one can be from a main relay controlled by the ECU if a suitable one is spare!? i was thinking ECU relay but do not think any outputs are fused)
Can anyone advise where to take power from on the MK2 fusebox?
I would like all to be fused for protection.

I can see G1/08 uses fuse 18 (20A) and G2/04 uses fuse 15 (10A)
Would either of these suit?

Thanks

 

yes this is exactly how it works, excellent i will source a fused relay etc for that then or a genuine vw fuse holder whichever is easier

How about the injectors?

sorry for all the questions, main reason is i am inexperienced with how much load the coils/injectors all put on the system.

thanks

 

Excellent thanks for the advice buddy, i will get on this now.

Whilst i have you, my N75 wires have snapped off flush with the pins, are these Junior power timer?

I need to order up some pins and a crimp tool so need the right one!
Also much prefer to replace the pins in the F/G1/G2 connectors as the ones i have are cut off fairly short, rather replace the pins than splice the cables!

Bit OCD haha

 

As always super helpful, i will get on this at the weekend

 

Hi RJ

Ok sooo....

I will be running G2/4 to the ECU as a power/trigger.
I then have a 14 way fusebox i have split into 3 feeds (7 way, 4 way, 3 way) to give me some options for Perm power, ECU controlled Relay power and a spare for Ign switched power.
I was intending on fitting a relay as you mentioned (53 type) next to my aux fusebox for the ECU switched power for Coils. Injectors, Valves etc.

What i want to know now is rather than an external relay, as i have this aux fusebox, can i utilise the now unused position 3 ECU relay holder?
If so what connections do i use and where?
I "think" the output is G1/10? not sure where i wire into the rest...
Also will this output be ok for the amount of power the Inj/Coils etc will draw (via my aux fusebox)

thanks

 

thanks man, what is special about the 109?