3450.1aĆa
1999
Pin Assignments
03/00
323i, 328i, M3
BM
BMW
BMW
BMW
E = Input, A = Output, M = Ground
X1171
Pin
Type
Description/Function
Connection
1
M
Ground
Ground
2
E
Battery voltage
ABS relay
3
M
Ground
Ground
4
E
Ignition cut-off signal
DME module
5
A
EML signal
DME module
6
A
Transmission influence
Transmission control module
7
E/A
TxD signal
Diagnostic link
8
A
RxD signal
Diagnostic link
9
Not used
10
A
Sensor ground
ABS speed sensor rear right
11
A
Sensor ground
ABS speed sensor front right
12
Not used
13
A
ABS power protection relay
ABS power protection relay
14
E
Pedal travel sensor
Pedal travel sensor
15
A
Right rear speed signal
DME module
16
E
Plus supply
ABS relay
17
A
Solenoid valve signal left rear inlet
ABS hydraulic unit
18
A
Solenoid valve signal left rear outlet
ABS hydraulic unit
19
M
Ground
Ground
20
A
ADS step motor (–)
ADS step motor
21
A
ADS step motor (+)
ADS step motor
22
A
Solenoid valve signal right front inlet
ABS hydraulic unit
23
E
ASC throttle flap potentiometer (–)
ASC throttle flap motor potentiometer
24
Not used
25
E
Idle speed signal
DME module
26
A
Throttle flap position
DME module
27
E
ASC switch signal
ASC witch
28
Not used
29
A
Sensor ground
ABS speed sensor rear left
30
A
Sensor ground
ABS speed sensor front left