Antilock Brakes / Traction Control Systems

Control unit connector pin assignment (ABS 5 and ABS 5 / ABD)

1 - Control unit voltage supply terminal 15 / from fuse No.16)
2 - Voltage for return pump relay and valve relay
3 - With solo ABS Not used
3 - With ABS / ABD = Switchover solenoid triggering (ground)
4 - With solo ABS Not used
4 - With ABS / ABD = Intake solenoid triggering (ground)
5 - Triggering of front left inlet valve (ground)
6 - With solo ABS Not used
6 - With ABS / ABD =Triggering of rear right inlet solenoid valve (ground)
7 - Return pump relay triggering (ground)
8 - Not used
9 - Up to MY '95 = Not used with Tiptronic vehicles as of MY '96 = Output signal (Front left rpm sensor) to Tiptronic control unit
10 - Front left speed sensor ground
11 - Signal from rear right speed sensor
12 - Rear left speed sensor ground
13 - With solo ABS = Output signal (Rear left speed sensor) to Central Information System (speedometer signal)
13 - With ABS / ABD = Signal from rear left speed sensor
14 - Front right speed sensor ground
15 - Signal from front right speed sensor
16 - L wire from diagnosis
17 - 18 Not used
19 - Engine monitor (Return pump)
20 - 23 Not used
24 - D + terminal 61
25 - With solo ABS = Triggering of rear axle outlet solenoid (ground)
25 - With ABS / ABD = Triggering of rear left outlet solenoid (ground)
26 - Triggering of front right outlet solenoid (ground)
27 - Not used
28 - Ground
29 - Ground
30 - Triggering of ABS warning lamp (ground)
31 - With solo ABS = Not used
31 - With ABS / ABD = Triggering of ABD warning lamp (ground)
32 - With solo ABS = Not used
32 - With ABS / ABD = Triggering of ABD information lamp (ground)
33 - Triggering of front left outlet solenoid (ground)
34 - With solo ABS = Not used
34 - With ABS / ABD = Triggering of rear right outlet solenoid (ground)
35 - With ABS / ABD as of MY '95 (RWD and 4WD) = Signal from front left speed sensor
36 - With ABS / ABD up to end of MY '94 = Signal from front left speed sensor
36 - With solo ABS = Signal from front left speed sensor
37 - Solenoid relay triggering (ground)
38 - Rear right speed sensor ground
39 - Not used
40 - With solo ABS = Signal from rear left speed sensor
40 - With ABS / ABD = Output signal (rear left speed sensor) to Central Information System (speedometer signal)
41 - Not used
42 - With manual transmission vehicles = Not used
42 - With Tiptronic vehicles = Output signal (front right speed sensor) to Tiptronic control unit
43 - 45 Not used
46 - Diagnosis K wire
47 - With solo ABS = Not used
47 - With ABS / ABD = Throttle information signal from DME control unit Required for ABD control
48 - Stop light switch signal (system voltage when brakes are actuated)
49 - 52 Not used
53 - With solo ABS = Triggering of rear-axle inlet solenoid (ground)
53 - With ABS / ABD = Triggering of rear left inlet solenoid (ground)
54 - Triggering of front right inlet solenoid (ground)
55 - Not used