OBD interface

Stik

16-pin Opel OBD connector

Pin number	Name	Description
2	K-Line	ABS diagnostic
3	K-Line	Radio, automatic transmission, immobilizer, steering wheel and other components
4	GND	Chassis ground
5	GND	Signal ground
6	CAN-High, J-2284	If car isn't equipped with CAN bus, you'll find self-diagnostic slow codes (e.g. on Astra-F-G) or ABS K-Line at this pin
7	K-Line	Engine, ABS, AT, Airbag, Navigation system, Radio diagnostic
8	K-Line	TID, MID diagnostic
9	K-Line	ABS, Airbag
11	K-Line	Automatic transmission diagnostic
12	K-Line	TID, MID, ABS, AirBag, air conditioner, Kuhlerlufter-Steuergerat
13	K-Line	immobilizer, MID, Airbag diagnostic
14	CAN-Low, J-2284	if CAN present
16	+12V	Accumulator