Paul, I did think this, but they are different colours to those that should be plugged into the ECU, is this normal?No you can remove those wires. They will be going to the white socket but if you choose to wire directly to the ecu then just remove the wires to the four ecu pins
Cheers
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Also, 3 of the pins are taken, not just 1. I have seen others say only 1 should be taken in petrol models?Paul, I did think this, but they are different colours to those that should be plugged into the ECU, is this normal?
Also, 3 of the pins are taken, not just 1. I have seen others say only 1 should be taken in petrol models?
Yes, I'm using the numbers labelled on the ECU plug.Not got much experience with petrol and cruise
Are you 100% sure you are connecting to the correct pins
Certainly on the diesel the 4 pins are only used for for cc so they are either empty ie no wires or if populated the wires are to the white socket
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I'm using the pin numbers labelled on the ECU plug. I don't have a white connector either, which is why I thought it was weird that so many of the pins should be occupied.The pin numbers on the ECU for CC depend on the engine and are NOT the same for TDI, 1.4 petrol and 1.6 FSI.
Following the wiring information for the different engines, read out of the official wiring schematic (can be bought from Audi here).
To note: There is a difference for interconnection between ECU and white socket that depends on the model year of the A2 (2001/02 and 2003). That is only important if you connect the CC stalk cable loom into the white socket instead of directly into the ECU.
The connection between ECU and white socket is sometimes already there, that means all the 4 connections on the ECU are occupied.
If you found another number than 4 or 0 of the CC-pins already occupied, i recommend to check the pin numbers again!
Model Year 2001/02
1.4 Petrol
CC-Stalk T10n Pin # <==> White Socket T17b Pin # (WireColor) <==> (1.4 Petrol ECU Pin #)
2 <==> 7(Blue) <==> (75)
3 <==> 8(Blue/Red) <==> (57)
4 <==> 10(White) <==> (38)
5 <==> 9(Black/Red) <==> (76)
7 <==> 10(White) <==> (38)
6 <==> Connect to ignition +12V (e.g. brake light switch pin #2 with wire color red/green)
TDI
CC-Stalk T10n Pin # <==> White Socket T10s Pin # (WireColor) <==> (TDI ECU Pin #)
2 <==> 7(Blue/Black) <==> (45)
3 <==> 8(Blue/Red) <==> (44)
4 <==> 10(White) <==> (14)
5 <==> 9(Black/Red) <==> (46)
7 <==> 10(White) <==> (14)
6 <==> Connect to ignition +12V (e.g. brake light switch pin #2 with wire color red/green)
Beginning from Model Year 2003
1.4 Petrol
CC-Stalk T10n Pin # <==> White Socket T10s Pin # (WireColor) <==> (1.4 Petrol ECU Pin #)
2 <==> 3(Blue/Black) <==> (75)
3 <==> 6(Blue/Red) <==> (57)
4 <==> 2(White) <==> (38)
5 <==> 7(Black/Red) <==> (76)
7 <==> 2(White) <==> (38)
6 <==> Connect to ignition +12V (e.g. brake light switch pin #2 with wire color red/green)
TDI
CC-Stalk T10n Pin # <==> White Socket T10s Pin # (WireColor) <==> (TDI ECU Pin #)
2 <==> 3(Blue/Black) <==> (45)
3 <==> 6(Blue/Red) <==> (44)
4 <==> 2(White) <==> (14)
5 <==> 7(Black/Red) <==> (46)
7 <==> 2(White) <==> (14)
6 <==> Connect to ignition +12V (e.g. brake light switch pin #2 with wire color red/green)
1.6 FSI
CC-Stalk T10n Pin # <==> White Socket T10s Pin # (WireColor) <==> (1.6 FSI ECU Pin #)
2 <==> 3(Blue/Black) <==> (49)
3 <==> 6(Blue/Red) <==> (51)
4 <==> 2(White) <==> (55)
5 <==> 7(Black/Red) <==> (52)
7 <==> 2(White) <==> (55)
6 <==> Connect to ignition +12V (e.g. brake light switch pin #2 with wire color red/green)
Hope it helps someone to installl CC.
Only 3 are occupied. Is it safe to unplug pins to try?Are all of the pins for the petrol wiring to ecu occupied ?
If all four are occupied then it looks like the car is already wired for cc if only some then not cc wiring but there is nothing else which uses these four ecu pins other than cc
All very strange !!!
You could always remove the wire(s) from the ecu socket then check that everything’s works as normal
I use a scalpel blade to move the tang out of the way so the connector socket can be extracted much easier if the wire is present as there is something to pull on
Cheers. Paul
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Only 3 are occupied. Is it safe to unplug pins to try?
No, I've had the comfort module out before, and the ECU has 2 plugs rather than 4.Just a thought............ you haven't confused the comfort module with the engine ECU.....the comfort module is the black one on top and the ecu lives below it just hidden from view.... silver/metal in colour.........its easy to as they both have multi plugs with plenty of wires.
I have counted myself but I am happy to take a picture if that would help the thread.It is easy enough to pick the wrong pin numbers on the ECU as only the minority of the pins are labeled. In between the labeled pins you have no other choise than to count yourself.
A picture of the socket with the 3(4) chosen pins would be good for us to help you here.
Better safe then sorry!
yes, worst that will happen is something does not work, if so replace the pinsOnly 3 are occupied. Is it safe to unplug pins to try?
These are the numbers I have been using to find the correct pins, thanks anyway for the thought.just a thought, the small pins in the ECU connector do NOT start at No1, if you look VERY closely you will see at each end of the low of pins a number in the plastic housing, this is the pin number of the very end pin
From memory the top row stats at pin 6 (but I may be wrong
have a look here https://www.google.com/search?q=1562937975.html&tbm=isch&source=iu&ictx=1&fir=I4hUilgzq0mFeM%3A%2Cw8k7N7Y1EcFeCM%2C_&vet=1&usg=AI4_-kQht6g2Lf3fJzY5WFcDXJpGsombuA&sa=X&ved=2ahUKEwjM_sPhk9vjAhXjRRUIHVB1DVoQ9QEwA3oECAkQCQ#imgrc=I4hUilgzq0mFeM: