System Diagram

CONTROL UNIT - TERMINAL CONFIGURATION
55 - Diagnosis K wire
54 - Characteristic map switch
53 - Throttle potentiometer
52 - Throttle position to transmission control unit
51 - Transmission input
50 - Knocking yes/no
49 - Speed/reference mark sender +
48 - Speed/reference mark sender -
47 - Intake air temperature
46 - not used
45 - ECTS II
44 - Tiptronic coding
43 - not used
42 - Selector lever switch
41 - Heating control unit
40 - AC compressor coupling
39 - not used
38 - not used
37 - DME relay 87
36 - Ground, DME relay 85
35 - Injector valve cylinder 2
34 - Injector valve cylinder 4
33 - Tank vent
32 - Auxiliary air pump (USA)
31 - Final stage ignition circuit 2
30 - Ground, knock sensors
29 - Knock sensor 2
28 - Oxygen sensor / CO potentiometer
27 - Terminal 15
26 - Ground, mass air flow sensor
25 - Final stage ignition circuit 1
24 - Ground, remaining final stages
23 - Injector valve cylinder 5
22 - Intake manifold flap closed
21 - Check Engine monitor (USA)
20 - Oxygen sensor heating
19 - Ground, electronics, all shields
18 - Battery +
17 - Injector valve cylinder 1
16 - Injector valve cylinder 6
15 - not used
14 - Ground, throttle potentiometer I NTCs
13 - Diagnosis L wire
12 - Positive supply throttle potentiometer /Hall sender
11 - Knock sensor 1
10 - Ground, oxygen sensor
9 - Vehicle speed
8 - Hall sender signal
7 - Mass air flow sensor signal
6 - Rev. counter
5 - Injector valve cylinder 3
4 - Intake manifold flap open
3 - Ground, DME relay 85 b
2 - not used
1 - Resonance flap