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

01-306
Terminal allocation, ABS control module -J104- Multi-pin connector at ABS control module
(w/EDL) -J104- Terminal
Connected to...

Terminal
1

Voltage supply, terminal 15
Traction control switch
-
5
2
ABS return flow pump relay -J105- (B+)
ABS solenoid valve relay -J106- (B+)
Voltage supply for steering angle sensor -G85- via
terminal 15
86
86
5
3
Hydraulic unit; activation of left front ABS outlet
valve -N102-
15
4
Hydraulic unit; activation of right rear ABS outlet
valve -N135-
12
5
Hydraulic unit; activation of left front ABS inlet
valve -N101-
8
6
Hydraulic unit; activation of right rear ABS inlet
valve -N133-
2
7
ABS return flow pump relay -J105- (GND)
85
8
Left front ABS wheel speed sensor -G47-
For vehicles with all-wheel-drive:
-
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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
Pa
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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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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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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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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
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01-315

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

Terminal
77
Sender for rotation rate -G202-; test signal; (control module 4B0
907 389)
5
77
Sender for rotation rate -G202-; test signal (combined sensor for
rotation rate and transverse acceleration); (control module 8D0 907
389/A/D/E)
3
78
Sender for rotation rate -G202-; reference signal; (control module
4B0 907 389)
4
78
Sender for rotation rate -G202-; reference signal (combined sensor
for rotation rate and transverse acceleration); (control module 8D0
907 389/A/D/E)
5
79
Sender for rotation rate -G202-; signal wire; (control module 4B0
907 389)
3
79
Sender for rotation rate -G202-; signal wire (combined sensor for
rotation rate and transverse acceleration); (control module 8D0 907
389/A/D/E)
6
80
Sender for rotation rate -G202-; (GND); (control module 4B0 907
389)
1
80
Sender for rotation rate -G202-; (GND) (combined sensor for
rotation rate and transverse acceleration); (control module 8D0 907
389/A/D/E)
2
Electrical Wiring Diagrams, Troubleshooting & Component Locations
Pa
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01-320

Resistance measurement: Select measurement range on VAG1526 (200 ) Test
step VAG
1598/20
sockets Test of
Test
requirements
- Additional work
steps Specified
value Corrective action
6 52 + 54

High pressure switch
valve -1- traction control
-N227-


W
16
- Check electrical wiring for short
circuit to Ground (GND) or B+.


High pressure switch
valve -2- traction control
-N228- Electrical Wiring Diagrams,
Troubleshooting & Component
Locations
- If the electrical wiring is OK,
replace the hydraulic unit.
7
8 + 10
1)
9 + 10 2) Left front ABS wheel speed
sensor -G47-
400
2300
- An infinitely high resistance
indicates an open circuit. Check for
this.
Outlets on ABS control module -J104- differ depending on installed equipment
1) Vehicles with all-wheel-drive
Pa
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01-321

Resistance measurement: Select measurement range on VAG1526 (2k or 20 k )





Test
step VAG
1598/20
sockets Test of
Test
requirements
- Additional work
steps Specified
value Corrective action
8 15 + 16 Right front ABS
wheel speed
sensor -G45-
- A resistance less than the specified value
indicates a short circuit between both lines.
Check for this.
9 13 + 14 Left rear ABS
wheel speed
sensor -G46-
400
2300
- Check electrical wiring for short circuit to
Ground (GND) or B+.
10 11 + 12 Right rear ABS
wheel speed
sensor -G44- Electrical Wiring Diagrams,
Troubleshooting & Component Locations - If the electrical wiring is OK, replace the
relevant ABS wheel speed sensor.
Pa
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