1998 VOLKSWAGEN BORA brake sensor

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Features of 4MOTION
In order to utilize the engine's maximum
performance for a test, e.g. on a rolling road
test bed, the longitudinal acceleration sensor -
G251- must be switched off Page 01
-264 ,
Initiating basic setting, Display group number
040.
Switch ignition off and on again to reactivate
the longitudinal acceleration sensor -G251-.
All-wheel drive vehicles with a Haldex coupling
are equipped with EDL (Electronic Differential
Lock).

Special detail for bleeding brake systems
with ABS/EDL
If a chamber in the brake fluid reservoir has run
empty, basic setting must be performed for
bleeding the brakes Page 01
-264 .

V.A.G 1551 scan tool or tester VAS 5051
The On Board Diagnostic must be initiated at
the commencement of troubleshooting.
Electrical malfunctions which influence the
braking characteristics will be stored.
They can be checked with the V.A.G 1551
Scan Tool, Vehicles system tester V.A.G 1552
or Vehicle Diagnosis, Testing and Information
System VAS 5051.
The program card in the V.A.G 1551 must be at
least version 9.0 and in vehicle system tester
V.A.G 1552, at least version 6.0.
Стр. 4из 10 ABS Mark 60 On Board Diagnostic (OBD), vehicles from my 10.00

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Repair Manual,
Brake System, Repair
Group 45; Removing
and installing parts of
ESP system 4 -
Sensor for
transverse
acceleration -
G200-

Vehicles with
ABS/EDL/ASR/ESP
only

Location:
Under
instrument
panel next to
steering
column

Checked by
OBD

Can be
checked via
read
measured
value block
Page 01
-240
Observe
installation
instructions
When the
sensor for
transverse
acceleration -
G200- is
replaced, a
zero
compensation
must be
performed

Initiate basic
setting
Page 01
-264 ,
perform
display group
number 063
Стр. 5из 17 Electrical/electronic components and installing locations

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Repair Manual,
Brake System,
Repair Group 45 5 -
Longitudinal
acceleration
sensor -G251-

Vehicles with
4MOTION
only

Location: On
right A pillar
at height of
instrument
panel

Checked by
OBD

Can be
checked via
read
measured
value block
Page 01
-
240
Observe
installation
instructions
When the
lateral
acceleration
sensor -
G251- is
replaced, a
zero
compensation
must be
performed

Initiate basic
setting
Page 01
-
264 ,
perform
display
group
number 069
Стр. 6из 17 Electrical/electronic components and installing locations

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Repair Manual,
Brake System, Repair
Group 45; Removing
and installing parts of
ESP system 6 -
ESP-Sensor
unit -G419-,
vehicles from
02.02

Vehicles with
ABS/EDL/ASR/ESP
only

Combined
sensor for
transverse
acceleration -
G200-, sender
for rotation
rate -G202-
and
longitudinal
acceleration
sensor
1) -
G251-

Assembled
together in one
housing

Checked
electrically by
On Board
Diagnostic
(OBD)

Combined in
one housing

Can be
checked via
read
measured
value block
Page 01
-240
Observe
installation
instructions
When the
Стр. 7из 17 Electrical/electronic components and installing locations

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Repair Manual,
Brake System, Repair
Group 45; Removing
and installing parts of
ESP system 8 -
Brake booster
9 -
Steering angle
sensor -G85-

Vehicles with
ABS/EDL/ASR/ESP
only

Location: On
steering
column
between
steering wheel
and steering
column switch.

Checked by
OBD

Can be
checked via
read
measured
value block
Page 01
-240
Observe
installation
instructions
When the
steering angle
sensor -G85-
is replaced, a
zero
compensation
must be
performed

Introduce
basic setting
Page 01
-
264 , perform
display group
number 060
Стр. 10из 17 Electrical/electronic components and installing locations

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ABS warning light -K47-

Electrical Wiring Diagrams,
Troubleshooting & Component Locations
binder
If the ABS warning light -K47- -1- does
not go out after switching ignition on and
completion of test sequence then the
malfunction may be:
-a- Voltage supply is below 10 Volt
-b- There is a malfunction in the ABS
The anti-locking brake system remains
switched off with an ABS malfunction -b-,
but the brake system remains fully
operational.
-c- Since the last time the vehicle was
started there was a temporary speed
sensor malfunction.
In the case of a sensor malfunction -c-,
the ABS warning light -K47- will
extinguish after restarting the engine and
attaining a speed of above 20 km/h
(approx. 13 mph).
-d- The connection from instrument
cluster to ABS Control Module (w/EDL) -
J104- is interrupted (open circuit).
-e- Instrument cluster is faulty.
Стр. 2из 4 Diagnostic Trouble Codes (DTCs) displayed by warning lights -K47-, -K118- and -K155-

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V.A.G 1551 print-
out Possible cause
Repair
00283
Left front ABS
wheel speed
sensor -G47-
1)
Electrical
malfunction in
current circuit
Open circuit in wiring between
left front ABS wheel speed
sensor -G47- and ABS control
module (w/EDL) -J104-
Repair Manual, Brake System,
Repair Group 45; Removing and
installing parts of ABS system on
front and rear axles - Check wiring and connections
using wiring diagram
- Perform electrical check Page
01-288
- Read measured value block
Page 01
-240 Display group number
001
If the malfunction occurs again:

Left front ABS wheel speed
sensor -G47- faulty
Repair Manual, Brake System,
Repair Group 45 - Replace left front ABS wheel
speed sensor -G47-
1) This DTC is recognized when vehicle is stationary.
Стр. 33из 129 On Board Diagnostic (OBD), performing

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V.A.G 1551 print-
out Possible cause
Repair
00283
Left front ABS
wheel speed
sensor -G47-
Mechanical fault
1)
Excessive air gap between
left front ABS wheel speed
sensor-G47- and rotor (signal
not OK) Repair Manual, Brake System,
Repair Group 45; Removing and
installing parts of ABS system on front
and rear axles - Check installation of left front ABS
wheel speed sensor -G47- and rotor
- Read measured value block
Page 01
-240 Display group numbers
001 and 002
- Perform test drive

Short to positive or ground in
wiring - Check wiring and connections using
wiring diagram
- Perform electrical check Page
01-288
Left front ABS wheel speed
sensor -G47- faulty
Repair Manual, Brake System,
Repair Group 45 - Replace left front ABS wheel speed
sensor -G47-
1) Type of DTC, this DTC is only recognized above 20 km/h (13 mph) (carry out test drive).
Стр. 35из 129 On Board Diagnostic (OBD), performing