traction control AUDI A4 1999 B5 / 1.G Brakes ESP Electrical Testing Workshop Manual
[x] Cancel search | Manufacturer: AUDI, Model Year: 1999, Model line: A4, Model: AUDI A4 1999 B5 / 1.GPages: 65, PDF Size: 0.21 MB
Page 6 of 65
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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Page 9 of 65
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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Page 10 of 65
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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Page 12 of 65
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
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Page 13 of 65
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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Page 15 of 65
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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Page 20 of 65
01-319
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
4 6 + 4 Inlet valve -N133-,
outlet valve -N135-
right-rear
9 22
Electrical Wiring Diagrams,
Troubleshooting & Component Locations - If the electrical wiring is OK, replace the
hydraulic unit.
5 49 + 50
Pilot valve -1-
traction control -
N225-
- An infinitely high resistance indicates an
open circuit. Check for this.
Pilot valve -2-
traction control -
N226-
12
28
- A resistance less than the specified
value indicates a short circuit between
both lines. Check for this.
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Page 21 of 65
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
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Page 45 of 65
01-335
Continuation: Function test: Red brake warning symbol
Test
step VAG
1598/20
sockets Test of
Test requirements
- Additional work stepsSpecified value
Corrective action
18 - Function of red
"brake system
malfunction"
symbol
- Connect VAG1551 scan tool
and select address word 03
- For vehicles with automatic
transmission and instrument
cluster with DIS, depress the
brake pedal and select a
driving gear. The ABS/EDL indicator lamp
and the red "brake system
malfunction" symbol light up.
If the traction control indicator
light is OK, it lights up as
well. Repair Manual,
Electrical Equipment, Repair Group 90; Instrument cluster
- Malfunction in
instrument cluster
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Page 46 of 65
01-336
Function test: Traction control indicator light -K86-
Test
step VAG
1598/20
sockets Test of
Test requirements
- Additional work stepsSpecified
value Corrective
action
19 - Function of traction
control indicator light -
K86- DTC memory checked and no DTC
present in DTC memory of ABS control
module -J104-. Ignition switched off Multi-pin connector connected to ABS
control module -J104- and retainer catch
engaged.
See continuation on next page
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