BMW 5251 Service Manual page 450

130-60
/Fuel
lniection
Tabled. Bosch M5.2 ECM pin assignments
Note Pin
21
20
I
output
/
Crankshaft position sensor (speed and position)
I
Crankshaft positionlrpm sensor
23
I
-
I
I
29
1
output
I
Idle speed control
-
opening winding
I
Idle speed control valve (cycled ground)
Type
22
1
output
I
Cvl. 6 ignition signal (primary signal)
I
Cyl. 6 ignition coil (RZV adapter)
output
25
26
27
28
Component/function
24
1
outout
I
Cvl. 7 iqnition siqnal (primary signal)
I
Cyl. 7 ignition coil (RZV adapter)
output
4
outbut
I '
I
-
I
Cyl. 3 fuel injection valve
I
Cyl. 3 fuel injection valve (cycled ground)
Camshaft position sensor (cylinder reference)
output
input
output
oround
30
31
32
ground
Hall effect camshaft position sensor
Cyl. 3 ignition signal (primary signal)
output
I
Cyl. 3 ignition coil (RZV adapter)
.
-
. .. . .
Cyl. 2 ignition signal (primary signal)
Terminal 30
Engine control module relay
Ground for electronics and sensor shield
output
output
outout
Remaining output stages ground
(not iclnition and fuel iniection valves)
Cyl. 2 ignition coil (RZV adapter)
Fuse carrier, engine electronics
Engine control module relay
Ground splice
,
Cyl. 2 fuel injection valve
Oxygen sensor heater signal
Cyl. 5 fuel injection valve
Cvl. 8 fuel iniection valve
AIC comuressor relav sianal
Heated oxygen sensor I in front of catalytic converter,
Heated oxygen sensor
iI
in front of catalytic converter
Cyl. 5 fuel injection valve (cycled ground)
Cvl. 8 fuel iniection valve (cycled ground)
.
-
Not used
Ground point
Cyl. 2 fuel injection valve (cycled ground)
Heatinq and AIC control module (ground
-
compressor OFF)
38 Not used
40
39
1 I
Not used
I ' I
.
I
I ' I
- .
I
46
1
ground
I
Heated oxygen sensor signal (voltage 0.1-1.0 V)
I
Oxygen sensors
41
1
inuut
I
Knock sensor signal
I
Knock sensor
input
I I
I
Instrument cluster
I ' I
I
55
1
ground
I
Ignition ground
I
Ground point
Knock sensor signal
43
1 I
Not used
I
Fuel reserve signal 42
Throttle position sensor
47
48
49
50
51
52
53
54
Knoclc sensor
input
45
1
outout
I
Hot film mass air flow sensor signal (0-5 V)
I
Hot film mass air flow sensor
Throttle position sensor signal (0.4-4.2 V)
44 input
output
output
output
output
output
inout
I
-
I
Not used
Not used
Cyl. 1 ignition signal (primary signal)
Cyl. 5 ignition signal (primary signal)
Cyl. 4 ignition signal (primary signal)
Cyl. 8 ignition signal (primary signal)
Throttle position sensor (c 5 V voltage supply)
Terminal 87
f >
10 V)
ignition switch
56
Cyl. 1 ignition coil (RZV adapter)
Cyi. 5 ignition coil (RZV adapter)
Cyi. 4ignition coil (RZV adapter)
Cyl. 8 ignition coil (RZV adapter)
Throttle position sensor
Fuse F1
input Terminal 15 (> 10 V)