BMW
6450.7Ća
1999
Pin Assignments
03/00
E = Input, A = Output, M = Ground
X1527
Pin
Type
Description/Function
Connection
1
E
Outside temperature
Outside temperature sensor
2
E
Evaporator temperature
Evaporator temperature sensor
3
E
Heater temperature, left
Left heat exchanger temperature sensor
4
E
Heater temperature, right
Right heat exchanger temperature sensor
5
E
Vehicle speed signal (Speedometer output
signal)
Instrument cluster
6
E
RPM speed signal TD
Engine control module (DME)
7
E
Illumination input
Illumination
8
A
Output signal
On-board computer
9
E
Terminal 50
Starter
10
A
RPM speed increase
Engine control module (DME)
11
A
A/C compressor activation
Pressure switch
12
A
Rear window signal
Rear window
13
A
Water valve activation, right
Right water valve
14
A
Fresh air flap motor activation
Fresh air flap motor
15
A
Fresh air flap motor activation
Fresh air flap motor
16
A
Fresh air flap motor activation
Fresh air flap motor
17
A
Fresh air flap motor activation
Fresh air flap motor
18
A
Water valve activation, left
Left water valve
19
A
A/C fan activation
A/C fan final stage
20
E
Independent ventilation
Relay box
21
M
Ground
Control panel
22
M
Ground
Mixing actuator
23
M
Ground
Control panel
24
E
Terminal 15
Fuse
25
E
Terminal 30
Fuse
26
E/A
Diagnostic data link
Data link connector