1998 VOLKSWAGEN BORA brake sensor

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Contact
Wiring connection to component ...
13
Longitudinal acceleration sensor -G251-(all-wheel drive vehicles with Haldex
coupling only)
14
Coding bridge to contact 3
15
Longitudinal acceleration sensor -G251-(four-wheel drive vehicles with Haldex
coupling only)
15
ESP Control lamp -K155- activation (vehicles with ABS/EDL/ASR only)
16
ABS warning light -K47- activation
17
Longitudinal acceleration sensor -G251-(four-wheel drive vehicles with Haldex
coupling only)
18
Brake light switch -F-
19
Right front ABS wheel speed sensor -G45-
20
Right front ABS wheel speed sensor -G45-
21
Vehicles with navigation system only
22
Right rear ABS wheel speed sensor -G44-
23
Right rear ABS wheel speed sensor -G44-
24
Ground point left in engine compartment and Ground connection in engine
compartment wiring harness
25
Voltage supply from battery +
Стр. 7из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Test step overview
To test component

Voltage supply for ABS hydraulic pump -V64- to ABS control module
(w/EDL) -J104- - Perform test
step 1
Voltage supply for valves in ABS hydraulic unit -N55- to ABS control
module (w/EDL) -J104- - Perform test
step 2
Voltage supply (terminal X) on ABS control module (w/EDL) -J104-
- Perform test
step 3
Function of brake light switch -F-
- Perform test
step 4
Resistance of right front ABS wheel speed sensor -G45-
- Perform test
step 5
Resistance of left front ABS wheel speed sensor -G47-
- Perform test
step 6
Resistance of right rear ABS wheel speed sensor -G44-
- Perform test
step 7
Resistance of rear left ABS wheel speed sensor -G46-
- Perform test
step 8
Voltage signal of right front ABS wheel speed sensor -G45-
- Perform test
step 9
Voltage signal of left front ABS wheel speed sensor -G47-
- Perform test
step 10
Стр. 8из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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To test component

Voltage signal of right rear ABS wheel speed sensor -G44-
- Perform test step 11
Voltage signal of rear left ABS wheel speed sensor -G46-
- Perform test step 12
Coding bridge
- Perform test step 13
Voltage supply for V.A.G 1551, T16 connector
- Perform test step 14
Resistance of K wire for On Board Diagnostic (OBD), T16 connector
- Perform test step 15
Function of ABS warning light -K47-
- Perform test step 16
Function of warning light for brake system -K118-
- Perform test step 17
Function of ABS hydraulic pump -V64-
- Perform test step 18
Check of data bus wiring
- Perform test step 19
Activation of longitudinal acceleration sensor -G251-
1)
- Perform test step 20
Function of ESP Control lamp -K155-
- Perform test step 21
1) All-wheel drive vehicles with Haldex coupling only.
Стр. 9из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Switch to measuring range:
Resistance measurement (2 k )
Test
step V.A.G
1598
sockets Item tested Test
conditions
- Additional
operations Specification
Measures for
deviations from
specification
5 19 + 20 Resistance of
right front ABS
wheel speed
sensor -G45-
Ignition
switched
off 1.0 to 1.3 k
Electrical Wiring
Diagrams,
Troubleshooting &
Component Locations
binder
If no malfunction can be
located in the wiring:
Repair Manual, Brake
System, Repair Group
45; Removing and
installing parts of ABS
system on front and rear
axles - Separate connector on
right front ABS wheel
speed sensor -G45-
- Check wiring using
wiring diagram
- Wiggle wiring during
test
- Replace right front
ABS wheel speed
sensor -G45-
Стр. 13из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Switch to measuring range:
Resistance measurement (2 k )
Test
step V.A.G
1598
sockets Item tested Test
conditions
- Additional
operations Specification
Measures for
deviations from
specification
6 1 + 2 Resistance of
left front ABS
wheel speed
sensor -G47-
Ignition
switched
off 1.0 to 1.3 k
Electrical Wiring
Diagrams,
Troubleshooting &
Component Locations
binder
If no malfunction can be
located in the wiring:
Repair Manual, Brake
SystemRepair Group 45;
Removing and installing
parts of ABS system on
front and rear axles - Separate connector on
left front ABS wheel
speed sensor -G47-
- Check wiring using
wiring diagram
- Wiggle wiring during
test
- Replace left front ABS
wheel speed sensor -
G47-
Стр. 14из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Switch to measuring range:
Resistance measurement (2 k )
Test
step V.A.G
1598
sockets Item tested Test
conditions
- Additional
operations Specification
Measures for
deviations from
specification
7 22 + 23 Resistance of
right rear ABS
wheel speed
sensor -G44-
Ignition
switched
off 1.0 to 1.3 k
Electrical Wiring
Diagrams,
Troubleshooting &
Component Locations
binder
If no malfunction can be
located in the wiring:
Repair Manual, Brake
System, Repair Group
45; Removing and
installing parts of ABS
system on front and rear
axles - Separate connector on
right rear ABS wheel
speed sensor -G44
- Check wiring using
wiring diagram
- Wiggle wiring during
test
- Replace right rear ABS
wheel speed sensor -
G44-
Стр. 15из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Switch to measuring range:
Resistance measurement (2 k )
Test
step V.A.G
1598
sockets Item tested Test
conditions
- Additional
operations Specification
Measures for
deviations from
specification
8 5 + 6 Resistance of
left rear ABS
wheel speed
sensor -G46-
Ignition
switched
off 1.0 to 1.3 k
Electrical Wiring
Diagrams,
Troubleshooting &
Component Locations
binder
If no malfunction can be
located in the wiring:
Repair Manual, Brake
System, Repair Group
45; Removing and
installing parts of ABS
system on front and rear
axles - Separate connector on
left rear ABS wheel
speed sensor -G46-
- Check wiring using
wiring diagram
- Wiggle wiring during
test
- Replace left rear ABS
wheel speed sensor -
G46-
Стр. 16из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check

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Functional check: Warning light for brake system -K118-
Test
step V.A.G
1598
sockets Item
tested
Test
conditions
- Additional
operations Specification
Measures for
deviations from
specification
17 - Function of
warning
light for
brake
system -
K118-
Brake fluid
level is OK.

Switch
ignition on Warning light for
brake system -
K118- lights up for
approx. 2 seconds
and goes out again
Electrical Wiring
Diagrams,
Troubleshooting &
Component
Locations binder - Check brake fluid
level warning
switch -F34- in
sealing cap

- Pull
connectors off
both front speed
sensors
- Start engine
and run at more
than 2000 rpm Warning light -
K118- lights up and
3 warnings are
sounded
Electrical Wiring
Diagrams,
Troubleshooting &
Component
Locations binder
Repair Manual,
Body Interior,Repair
Group 70 - Check wiring
using wiring
diagram
- Malfunction in
instrument cluster

- Reconnect
connectors to
both front speed
sensors again
- Check DTC
memory and
erase
Стр. 23из 31 ABS, ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE, electrical check