BMW OBD-II diagnostic interface pinout

16 pin J1962 OBD-2 car proprietary connector

at the BMW car

used in all BMW models produced after 2000's

Pin

Signal

Description

1 +12V

Ignition(in run or start)

4 CGND

Chassis ground

5 SGND

Signal ground

7

ISO 9141-2
K-LINE

engine (ISO-9141 and ISO-14230),
automatic transmission diagnostic (in
some models)

8

ISO 9141-2
K-LINE

IKE/KOMBI, ABS, ABS/ASR,
ABS/ABD, ESP, DSC, Airbag and
other electronic equipment

9 TD/RPM

Engine rotation speed

16 +12v

Battery power

ISO 9141-2 used in BMW 3-Serie, 5-Serie, X5, Z3, Z4, Z8, 740i, 740iL, 750iL.

KWP2000 used in BMW 5-Serie; Generation (E60), BMW 745i, 745Li, 765Li.