wheel VOLKSWAGEN BORA 1998 Workshop Manual

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Sporadic (irregular) malfunctions will also be
recognized and stored. But if malfunctions
affecting the data bus system do not occur again
within the next 15 vehicle start and driving off
sequences, or other malfunctions within the next
50 vehicle start and driving off sequences, they
will be erased from DTC memory except for the
malfunction "Control module faulty" (forget-
malfunction counter).
After switching on the ignition and/or starting the
engine, the ABS warning light -K47- and the ESP
control lamp -K155- will light up for approx. 2
seconds.
During this period a test sequence (self-check) is
run in the control module for the following
functions:

To check if the supply voltage is at least 10.0
Volt,

To check control module including the valve
windings,

To check the coding of the control module,

A static check of the speed sensor (no speed
signal),

If the wheel speed signal is not OK after the car
has been driven and a speed of approx. 20
km/h (approx. 13 mph) has been exceeded, the
ABS warning light -K47- will light up again.
Стр. 3из 10 ABS Mark 60 On Board Diagnostic (OBD), vehicles from my 10.00

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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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Technical information

Electrical Wiring Diagrams, Troubleshooting
&Component Locations binder
Repair Manual, Brake System
Repair Manual, Suspension, Wheels,
Steering
Стр. 8из 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 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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Repair Manual,
Suspension, Wheels,
17 -
Right/left
front ABS
wheel speed
sensor -G45-/-
G47-

Checked by
OBD

Before
inserting the
sensor clean
the inner
surface of
the sensor
mounting
and coat with
lubricating
paste G 000
650

When
connecting
the speed
sensor wire
make sure it
is not twisted
in the wheel
housing

Securing bolt
tightening
torque - 10
Nm (7.4 ft lb)
18 -
Wheel hub
with rotor for
speed
sensors

Rotor and
speed
sensors for
left front and
right-hand
sides are
identical

Removing
and installing
Стр. 14из 17 Electrical/electronic components and installing locations

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Group 40; Servicing
front suspension; II -
Servicing wheel
bearings
Стр. 15из 17 Electrical/electronic components and installing locations

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Repair Manual,
Suspension, Wheels,
Steering, Repair
Group 42; Servicing
19 -
Right/left rear
speed sensor
-G44-/-G46-

Checked by
OBD

Before
inserting the
sensor clean
the inner
surface of
the sensor
mounting
and coat with
lubricating
paste G 000
650

When
connecting
the speed
sensor wire
make sure it
is not twisted
in the wheel
housing

Securing bolt
tightening
torque - 10
Nm (7.4 ft lb)
20 -
Wheel hub
with rotor for
speed
sensors

Rotor and
speed
sensors for
left rear and
right-hand
sides are
identical

Removing
and installing
Стр. 16из 17 Electrical/electronic components and installing locations

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Стр. 17из 17 Electrical/electronic components and installing locations

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Warning lights -K47- and -K118-

Electrical Wiring Diagrams,
Troubleshooting & Component Locations
binder
WARNING!
After the ABS warning light -K47- and
warning light for brake system -K118-
have illuminated, it is possible that the
rear wheels will lock-up earlier when
braking.
If the ABS warning light -K47- -1- goes
out but the warning light for brake
system -K118- -2- remains on, then the
malfunction may be:
-a- The parking brake is applied.
-b- There is a malfunction in the
activation of the warning light for brake
system -K118-.
-c- The brake fluid level is too low.
If the ABS warning light -K47- -1- and
the warning light for brake system -
K118- -2- illuminate, the ABS system is
faulty and the EBD (Electronic brake
pressure distribution) is not functioning.
Стр. 3из 4 Diagnostic Trouble Codes (DTCs) displayed by warning lights -K47-, -K118- and -K155-

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On Board Diagnostic (OBD),
performing
Test prerequisites for OBD

The tires installed to all wheels must be of
the same (approved) size; tires inflated to
prescribed pressure.

Mechanical/hydraulic parts of the brake
system including brake light switch and
brake lights OK.

Hydraulic lines and connections not leaking
(visual check of hydraulic unit, brake
calipers, wheel cylinders, tandem master
brake cylinder).

ABS Control Module (w/EDL) -J104- is
correctly bolted to ABS Hydraulic Unit -
N55-.

Connector on ABS Control Module (w/EDL)
-J104- correctly plugged-in (retainer is
engaged).

Check contacts of ABS components for
damage and correct seating.

All fuses according to wiring diagram OK
(remove fuse from fuse holder to check).

Supply voltage OK (at least 10.0 V).
Стр. 1из 129 On Board Diagnostic (OBD), performing