BMW 1992 525i Electrical Troubleshooting Manual page 232

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AUTOMATIC STABILITY CONTROL (ASC)
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Pin
lYpe Description/Function
Connection
lYPe of Signal
Tester Display Measurement Notes
19
A Left rear solenoid control
Left rear solenoid valve Ground
20
A
Right front solenoid control Right front solenoid valve Ground
21
A
Left front solenoid control Left front solenoid valve Ground
22
Not used
23
E Valve relay control Valve relay
Ground
24
Not used
25
E Pump relay monitor
Pump relay
26
E Sensor ground
Front left speed sensor Ground
'Zl Not used
28
E Sensor ground Right rear speed sensor Ground
(,.)
29
E Sensor ground Left rear speed sensor Ground
~
Ul
0
30
E Speed signal Left rear speed sensor
.
..a.
I
31
Not used
C'
32
Not used
33
E Charging voltage Alternator approx. 12 V
34
Not used
35 Not used
36
M
Ground, control unit Ground Ground
37 A Power signal Pump relay
38
E Ignition timing signal Ignition coil
39 Not used
40
Not used
41
M Ground Connection, Pin 3 Ground
42
E Battery voltage Power distribution box approx. 12 V
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N