1998 VOLKSWAGEN JETTA Service Manual

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A B
C
D

E
















Perform directed
entry of electrical
tests Service
hydraulic/mechanical
parts of brake system (
Repair Manual)
























1. Perform all test steps
of electrical checks
Page 01
-102

Identification not OK.




2. Service
hydraulic/mechanical
parts of brake system




( Workshop
Manual)
Replace control module











- Connect V.A.G 1551 and check DTC memory again (02).

- Erase DTC memory (05)

- Perform test drive at more than 20 km/h (13 mph) and allow the ABS to
regulate braking.

- Check DTC memory again after test drive. If "No DTC recognized" appears
on display of V.A.G 1551 after repairing DTCs and performing test drive the On
Board Diagnostic (OBD) is completed.







Стр. 8из 8 ABS ITT Mark 20 IE On Board Diagnostic (OBD)

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Electrical/electro
components and
locations
Repair Manual, Brake
System, Repair Group 45
1 -

ABS hydraulic unit
N55-

Located on left of
engine compartm
e
The ABS hydraulic
pump -V64- and th
inlet/outlet valves i
hydraulic unit are
checked by On B
o
Diagnostic (OBD)

The ABS Hydraulic
Pump -V64- and v
block must not be
separated from o
n
another

Removing and
installing:
When changing th
hydraulic unit, alw
a
seal the old part w
the plugs from the
repair set Part No.
698 311 A
Стр. 1 из 14
Electrical/electronic components and locations
Volkswagen Technical Site: http://v olkswagen.msk.ru http://vwts.info http://vwts.ru
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2 -
ABS control
module
(w/EDL) -
J104-

Location: on
hydraulic unit
on left of
engine
compartment

Checked by
On Board
Diagnostic
(OBD)

Checking the
multi-pin
connector to
control
module
Page 01
-106
Do not
disconnect
connector
before
successfully
completing
OBD. Switch
ignition off
before
separating
connection.
Стр. 2из 14 Electrical/electronic components and locations

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Repair Manual,
Brake System,
Repair Group 45 3 -
ABS/EDL and
ABS/EDL/ASR
hydraulic unit
-N55-

Located on
left of engine
compartment.

The ABS
hydraulic
pump -V64-
and the
inlet/outlet
valves in the
hydraulic unit
are checked
by On Board
Diagnostic
(OBD)

The ABS
hydraulic
pump -V64-
and valve
block must
not be
separated
from one
another

Removing
and installing
When
changing the
hydraulic
unit, always
seal the old
part with the
plugs from
the repair set
Part No. 1H0
698 311 A
Стр. 3из 14 Electrical/electronic components and locations

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4 -
ABS/EDL and
ABS/EDL/ASR
Control
Module -J104-

Location: on
hydraulic unit
on left of
engine
compartment

Checked by
On Board
Diagnostic
(OBD)

Checking the
multi-pin
connector to
control
module
Page 01
-106
Do not
disconnect
connector
before
successfully
completing
OBD. Switch
ignition off
before
separating
connection.
Стр. 4из 14 Electrical/electronic components and locations

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5 -
Brake light
switch -F-

The brake
light switch is
open in the
rest position;

Adjusting
Page 01
-131
Can be
checked via
read
measured
value block
Page 01
-
61
6 -
Data Link
Connector
(DLC)

Installation
position: in
center
console
below
heating/air
conditioning
controls
7 -
Longitudinal
acceleration
sensor -G251-

All-wheel
drive
vehicles with
Haldex
coupling only
Стр. 5из 14 Electrical/electronic components and locations

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8 -
ABS warning
light -K47-

Location:
instrument
cluster
Function:
Page 01
-17
9 -
Warning light
for brake
system -K118-

Location:
instrument
cluster
Function:
Page 01
-17
10 -
ESP control
lamp -K155-

Location:
instrument
cluster
Стр. 6из 14 Electrical/electronic components and locations

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11 -
Right/left
front ABS
wheel speed
sensor -G45-/-
G47-

Checked by
On Board
Diagnostic
(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
ensure it is
not twisted in
the wheel
housing

Bolt
tightening
torque - 10
Nm
12 -
Wheel hub
with impulse
rotor for
right/left front
speed
sensors

Rotor and
speed
sensors for
front left and
right-hand
sides are
identical
Стр. 7из 14 Electrical/electronic components and locations