BMW-20 diagnostic socket
1. Black - DME (TD)
4
3 5 4. Violet / black - +12V (R)
7. White / green - Service reset
15
2 6
14 16
12. Blue - Generator
14. Red - +12V (30)
1 13 17 7
15. White / Yellow - L-line (RxD)
20 18 16. Green / white - +12V (15)
12 8
19
17. White / violet - K-line (TxD2)
11 9
19. Brown - GND
10
20. White / violet - K-line (TxD)
OBD-II BMW-20
16 14
+12V +12V
7 17
K-line K-line
8 20
4 19
GND
GND
5
OBD-II to BMW-20 adapter
www.bmw-scanner.com