Audi A4 RB4/RB8 wiring dashboard -> engine ecu

[d2mike]

Hi guys,

I have to simulate a complete immobilizer system on the bench. Therefore I need to know on which pins the dashboard communicates with the engine ecu!

I think the communication happens via CAN Low/CAN High but I'm not sure.

Thanks for info.

Cheers,
d2mike

[Shmortz]

32 pin green dashboard connector

pins 18,19 - GND
pin 2 - 30
pin 3 - 15
pin 12 - CAN L
pin 13 - CAN H

[d2mike]

32 pin green dashboard connector

pins 18,19 - GND
pin 2 - 30
pin 3 - 15
pin 12 - CAN L
pin 13 - CAN H

So I connect - in this case EDC16 - CAN Low/High (Pin 66, 89) from engine ECU with CAN Antrieb Low/High (Pin 12/13), right?

[Shmortz]

immo communication is between dashboard and engine ECU via CAN bus

[d2mike]

immo communication is between dashboard and engine ECU via CAN bus

Thank you, mate.
Should work for communication between dash and engine ecu:

So I connect - in this case EDC16 - CAN Low/High (Pin 66, 89) from engine ECU with CAN Antrieb Low/High (Pin 12/13), right?

All other pins/wiring are self-evident.

[Shmortz]

you may also need to connect engine control relay, or connect directly the power on ECU pins after the relay...

[d2mike]

Alright. Thanks a lot.
I'll try and report tomorrow.

[yugo45]

RB4/8:

Blue connector:
31 - Immo coil pin #1
30 - Immo coil pin #2

Green connector:

3 - terminal 15 positive (12 volts)
2 - terminal 30, positive (12 volts)
18+19 - terminal 31, earth (ground)
23 - self diagnosis/K-wire (K-line)
13 - Can-H
12 - Can-L

EDC16:

12V = 18,5
Ground = 1,2
K-Line = 72
Can-H = 89
Can-L = 66

OBD:

4+5 - Ground
7 - K-line
16 - 12 volts
14 - Can-L
6 - Can -H


All 3 components Cluster , ECU and OBD needs to be connected ,plus you need to have immo coil and key if you want to do any programing.

[d2mike]

Worked perfect!
Thanks mates

Cheers

[ghostridersa]

Great info, thank you.