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

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