System Diagram

DME Connector Pin Assignment:

1 Ignition coil
2 Ground, ignition output stage (MP IX)
3 Ground (Fuel pump relay)
4 Idle speed positioner, opening winding
5 not used
6 Speed signal at rev counter
7 Air mass sensor signal
8 Hall sender signal
9 Speed signal from speedometer
10 Ground, electronics (MP VIII)
11 Knock sensor 1
12 Positive terminal, Hall sender I throttle
13 Diagnostics L-wire
14 Ground, injection valves (MP IX)
15 not used
16 Injection valve cylinder 3
17 Injection valve cylinder 1
18 Terminal 30
19 Ground, electronics
20 not used
21 Check Engine warning lamp
22 Idle speed positioner, closing winding
23 VarioCam
24 Ground of remaining output stages (MP IX)
25 Hot-wire burnoff
26 Ground, air mass sensor
27 Terminal 15
28 Oxygen sensor/idle CO potentiometer
29 Knock sensor 2
30 Ground NTC/shield knock sensor
31 Knock yes/no
32 Control of AC relay
33 Tank venting valve
34 Injection valve cylinder 2
35 Injection valve cylinder 4
36 DME relay 85
37 DME relay 87
38 not used
39 not used
40 AC switch input
41 Coolant temperature switch (115° C)
42 Position switch (selector lever)
43 not used
44 Ground, version coding
45 Engine temperature sensor 2
46 not used
47 Oil temperature sensor
48 Speed signal / reference mark
49 Speed signal / reference mark
50 not used
51 Ignition angle cut-in (Tiptronic)
52 Throttle position to transmission control unit
53 Signal from throttle potentiometer
54 Version coding
55 Diagnosis for lead K