BMW old 15 pin diagnostic interface connector pinout

15 pin BMW proprietary connector

at the BMW car

used in all models of BMW until 1988 year

Pin

Number

Pin

Name

Description (may be empty)

1

GND Ground

4

Temperature sensor

5

Oxygen sensor

6

SRS diagnostic

7

Oil service and inspection reset

8

?rankshaft position (+)

9

Shield

10

?rankshaft position (-)

11

Starter external turn on

12

Generator status

13

Ignition status

14

Battery power

15

Ignition power