BMW 5251 Service Manual page 410

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Fuel Injection
Table b. Siemens MS 41.1 ECM pin assignments (continued)
Pin l ~ i q n a l
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Componentlfunction
1
Notes
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-
I I
5 loutput
I
Fuel injector control, cyl. 2
I
Pulsed ground (pulse width in ms), cyl. 2
I I
I
6 loutput /Fuel injector control, cyi. 1
I
Pulsed ground (pulse width in ms), cyl. 1
I I
I
14 linput
I
Intake air temp. sensor (IAT)
I
Intake air temperature signal
-
7
8
9
10
11
12
13
ground
input
output
input
input
15
16
17
18
19
20
21
22
I
-
I
I
35 loutput /Secondary air injection ISecondary air inj. pump relay control
25
26
27
28
29
30
31
32
33
36
/output
I
Engine speed output IEngine speed signal
Mass air flow sensor
Mass air flow sensor
instrument cluster
Engine coolant temp. (ECT) sensor
Not used
Throttle position sensor (TPS)
Not used
input
input
input
input
output
output
o u t ~ u t
37
1
-
/Not used
I
Mass air flow sensor signal
Mass air flow sensor signal
Fuel consumption signal
ECT signal
Throttle position signal
ground
input
output
ground
output
output
output
ground
output
Traction control (rear engine speed signal)
Automatic climate control
Not used
Electronic immobilizer control (EWS)
Auto. climate control (AIC on input)
instrument cluster
Camshaft actuator control (VANOS)
Fuel iniector control, cvl. 3
AES/ASC module
Automatic climate control
instrument cluster (CARE signal)
Camshaft actuator (VANOS), switched ground
Pulsed ground (pulse width in ms), cyl. 3
Oxygen sensor heater (no. 1 in front of catalytic
converter)
Power supply (terminal 30)
Idle speed control valve
Ground
Ignition coil control, cyl. 1
Ignition coil control, cyl. 3
Ignition coil control, cyl. 5
Ground
Fuel injector control, cyl. 5
Oxygen sensor heater ground
Battery voltage (E+) at all times
Pulsed ground-open signal (See pin 53)
Ground
Primary signal, ignition coil 1
Primary signal, ignition coil 3
Primary signal, ignition coil 5
Ground
Pulsed ground (pulse width in ms), cyl 5