BMW 1992 525i Electrical Troubleshooting Manual page 231

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AUTOMATIC STABILITY CONTROL (ASC)
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Pin Assignments
X1171
Pin
'J\'pe
Description/Function Connection 1\'pe of Signal Tester Display
Measurement Notes
1 E Battery voltage ABS relay
approx. 12 V
2 A Right rear solenoid control
Right rear solenoid valve Ground
3 M Ground, control unit Connection, Pin 41 and
Ground
ground
4 E Power Valve relay
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5
E
Controlled ground Pump relay Ground
U1
C)
.
6 A
ABS lamp control Instrument cluster Ground
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7 Not used
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8 E Speed signal Left front speed sensor
9 Not used
10 E Speed signal Right rear speed sensor
11 Not used
12 E Sensor ground
Right front speed sensor
Ground
13
E Speed signal Right front speed sensor
14
Not used
15
E Brake pedal status Brake light switch Ground
16
Not used
17
Not used
18 M
Ground, control unit Ground Ground
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