diagram AUDI A4 1999 B5 / 1.G Brakes ESP Electrical Testing Workshop Manual

01-305

Connecting VAG1598/20 test box and
checking ESP system

- Switch ignition off.

- Remove ABS control module -J104-.

Repair manual, Brake System, Repair Group
45


- Disconnect multi-pin connector from ABS control
module -J104-.

- Check multi-pin connector between harness
connector and ABS control module -J104-.

The socket designations on the VAG1598/20 test box are identical to the
terminal designations on the ABS control module -J104- and on the wiring
harness connector.
Electrical Wiring Diagrams, Troubleshooting & Component Locations - Connect VAG1598/20 test box to multi-pin connector of wiring harness.
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Electrical Wiring Diagrams, Troubleshooting & Component Locations
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01-307

Multi-pin connector at ABS control module (w/EDL) -
J104- Terminal
Connected to...

Terminal
9
Left front ABS wheel speed sensor -G47-
For vehicles with front-wheel-drive:
-
10
Left front ABS wheel speed sensor -G47-
(GND)
-
11
Right rear ABS wheel speed sensor -G44-
-
12
Right rear ABS wheel speed sensor -G44-
(GND)
-
13
Left rear ABS wheel speed sensor -G46-

14
Left rear ABS wheel speed sensor -G46- (GND)
-
15
Right front ABS wheel speed sensor -G45-
-
16
Right front ABS wheel speed sensor -G45-
(GND)
-
17
Not assigned
-
Electrical Wiring Diagrams, Troubleshooting & Component Locations
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01-308

Multi-pin connector at ABS control
module (w/EDL) -J104- Terminal
Connected to...

Terminal
18
Sensor for transverse acceleration -G200-; signal wire (control
module 4B0 907 389)
2
18
Sensor for transverse acceleration -G200-; signal wire (combined
sensor for rotation rate and transverse acceleration) (control
module 8D0 907 389/A/D/E)
4
19
Sensor for transverse acceleration -G200-; (Ground -GND-) (control
module 4B0 907 389)
1
19
not occupied; (control module 8D0 907 389/A/D/E)
-
19
not occupied; (control module 8D0 907 389A)
-
20
ABS return flow pump relay -J105-
Hydraulic unit; control wire for ABS return flow pump -V39-
87
14
21
Not assigned
-
22
Hydraulic pump for traction control -V156-; voltage supply
2
23
Not assigned
-
24
Hydraulic pump for traction control -V156-; (GND)
1
Electrical Wiring Diagrams, Troubleshooting & Component Locations
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01-309

Multi-pin connector at ABS control module
(w/EDL) -J104- Terminal
Connected to...

Terminal
25
Hydraulic unit; activation of left rear ABS outlet valve -
N136-
11
26
Hydraulic unit; activation of right front ABS inlet valve -N99-

5
27
Not assigned
-
28
Ground (GND) supply, terminal 31
-
29
Ground (GND) supply, terminal 31
-
30
Not assigned
-
31
Instrument cluster; activation of traction control indicator
light; (control module 4B0 907 389)
15
31
Rear left wheel speed sensor output; (control module 8D0
907 389/A/D/E)
-
32
Instrument cluster; ABS/EDL warning light activation
26
33
Not assigned
-
Electrical Wiring Diagrams, Troubleshooting & Component Locations
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pair&id=AUDI.B5.SU02.01.16

01-310

Multi-pin connector at ABS control
module (w/EDL) -J104- Terminal
Connected to...

Terminal
34
Sender for rotation rate -G202-; voltage supply; (control module
4B0 907 389)
2
34
Sender for rotation rate -G202-; voltage supply (combined sensor
for rotation rate and transverse acceleration) (control module 8D0
907 389/A/D/E)
1
35
Not assigned
-
36
not occupied; (control module 4B0 907 389)
-
36
ABS solenoid valve relay -J106- (GND); (control module 8D0 907
389/A/D/E)
85
37
ABS solenoid valve relay -J106- (GND); (control module 4B0 907
389/A/D/E)
85
37
not occupied; (control module 8D0 907 389/A/D/E)
-
38
Not assigned
-
39
Not assigned
-
Electrical Wiring Diagrams, Troubleshooting & Component Locations
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pair&id=AUDI.B5.SU02.01.16

01-311

Multi-pin connector at ABS control module
(w/EDL) -J104- Terminal
Connected to...

Terminal
40
Not assigned
-
41
Not assigned
-
42
Brake light switch -F; brake test switch
4
43
Not assigned
-
44
Traction control switch
6
45
Not assigned
-
46
Diagnostic connector; K-wire
7
47
Not assigned
-
48
Brake light switch -F-; brake light switch
2
49
ABS hydraulic unit -N55-; activation of pilot valve -1-
traction control -N225-
7
50
ABS hydraulic unit -N55-; activation of pilot valve -2-
traction control -N226-
6
51
Voltage supply; terminal 30 for hydraulic pump for
traction control -V156-;
-
Electrical Wiring Diagrams, Troubleshooting & Component Locations
Pa
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pair&id=AUDI.B5.SU02.01.16

01-312

Multi-pin connector at ABS control module
(w/EDL) -J104- Terminal
Connected to...

Terminal
52
ABS hydraulic unit -N55-; activation of high pressure
switch valve -2- traction control -N228-
4
53
ABS hydraulic unit -N55-; activation of left rear ABS inlet
valve -N134-
3
54
ABS hydraulic unit -N55-; activation of high pressure
switch valve -1- traction control -N227-
1
55
ABS hydraulic unit -N55-; activation of right front ABS
outlet valve -N100-
9
56
not used
-
57
not used
-
58
not used
-
59
not used
-
60
not used
-
61
Not assigned
-
62
Not assigned
-
63
Not assigned
-
Electrical Wiring Diagrams, Troubleshooting & Component Locations
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pair&id=AUDI.B5.SU02.01.16

01-313

Multi-pin connector at ABS control module
(w/EDL) -J104- Terminal
Connected to...

Terminal
64
CAN-bus; (Engine Control Module (ECM); Transmission
Control Module (TCM),
steering angle sensor -G85-)
EWD
2
65
not occupied; (control module 4B0 907 389)
-
65
CAN-bus shielding; (control module 8D0 907 389/A/D/E)
-
66
CAN-bus; (Engine Control Module (ECM); Transmission
Control Module (TCM),
steering angle sensor -G85-)
EWD
3
67
Sender 1 for brake booster -G201-; (GND) (control module
4B0 907 389)
1
67
Sender 1 for brake booster -G201-; voltage supply (control
module 8D0 907 389/A/D/E)
1
68
Sensor for brake pressure -G201-; signal wire
2
69
Sender 1 for brake booster -G201-; voltage supply (control
module 4B0 907 389)
3
69
Sender 1 for brake booster -G201-; (GND) (control module
8D0 907 389/A/D/E)
3
Electrical Wiring Diagrams, Troubleshooting & Component Locations
Pa
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), electrical testin
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pair&id=AUDI.B5.SU02.01.16

01-314

Multi-pin connector at ABS control
module (w/EDL) -J104- Terminal
Connected to...

Terminal
70
Left-rear wheel speed sensor output; (control module 4B0
907 389)
EWD
70
Instrument cluster; activation of traction control indicator
light (control module 8D0 907 389/A/D/E)
15
71
Speed sensor output rear right
EWD
72
not occupied; (control module 4B0 907 389)
-
72
Front left wheel speed sensor output; (control module 8D0
907 389/A/D/E)
EWD
73
not occupied; (control module 4B0 907 389)
-
73
Front right wheel speed sensor output; (control module 8D0
907 389/A/D/E)
EWD
74
Not assigned
-
75
Sensor for transverse acceleration -G200-; voltage supply;
(control module 4B0 907 389)
3
75
not occupied; (control module 8D0 907 389/A/D/E)
-
76
Parking brake warning light switch -F9-
EWD
Electrical Wiring Diagrams, Troubleshooting & Component Locations
Pa
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(ESP
), electrical testin
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11/20/2002 htt
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yp
e=re
pair&id=AUDI.B5.SU02.01.16