1998 VOLKSWAGEN JETTA lock

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List of selectable functions

Page
00
- Automatic test sequence Page
01-30
01
- Check control module version
Connecting V.A.G 1551 Scan
Tool and selecting functions Page
01-23
02
- Check DTC memory Page
01-28
03
- Output Diagnostic Test Mode Page
01-74
04
- Initiate basic setting Page
01-91
05
- Erase DTC memory Page
01-56
06
- End output Page
01-56
07
- Code control module Page
01-58
08
- Read measured value block Page
01-61
Стр. 7из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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Note:

The ABS function is switched off in the control
module during the On Board Diagnostic.

The DTC memory can be erased after
successful checking and repair.

Note:
Operating instructions for Vehicle Diagnosis,
Testing and Information System VAS 5051. - Pull cover -1- off in direction of -arrow-.
- With ignition switched off, connect tester VAS
5051 to diagnosis connection using diagnosis
cable VAS 5051/1 or VAS 5051/3.
In the functions 04 - Basic setting/08 - Read
Measured value block, the display zones will b
e
listed from top to bottom.
If the display does not indicate as described in
the work sequence:
Стр. 12из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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V.A.G 1551
print-out Possible cause
Repair
00283
Left front ABS
wheel speed
sensor -G47-
Signal outside
tolerances
1)
Open circuit, short to positive or
Ground, or loose contact in
connections between left front ABS
wheel speed sensor -G47- and ABS
Control Module (w/EDL) -J104- - Check wiring and
connections using wiring
diagram
- Perform electrical checks
from Page 01
-102

Electrical interference from other
sources (high frequency radiation e.g.
non-insulated ignition cable) - Read measured value block
Page 01
-61 Display group
number 001

Damaged rotor or left front ABS wheel
speed sensor -G47-


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 left front ABS wheel
speed sensor -G47- and rotor
for damage
- Replace rotor/speed sensor
1) Type of DTC, this DTC is only recognized above 20 km/h (13 mph) (carry out test drive).
Стр. 18из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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V.A.G 1551 print-
out Possible cause
Repair
00283
Left front ABS
wheel speed
sensor -G47-
Mechanical
malfunction
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-
61 Display group number 002
- Perform output Diagnostic Test Mode
(DTM) Page 01
-74
If the malfunction occurs again:

Outlet valve in ABS
hydraulic unit -N55-
faulty Repair Manual, Brake System, Repair
Group 45; Hydraulic unit, brake
booster/brake master cylinder - Assembly
overview; Removing and installing control
module and hydraulic unit - Replace ABS hydraulic unit -N55-
1) Type of DTC, this DTC is only recognized above 20 km/h (13 mph) (carry out test drive).
Стр. 19из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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V.A.G 1551
print-out Possible cause
Repair
00285
Right front ABS
wheel speed
sensor -G45-
Signal outside
tolerances
1)
Open circuit, short to positive or
Ground, or loose contact in
connections between right front ABS
wheel speed sensor -G45- and ABS
Control Module (w/EDL) -J104- - Check wiring and
connections using wiring
diagram
- Perform electrical checks
from Page 01
-102

Electrical interference from other
sources (high frequency radiation e.g.
non-insulated ignition cable) - Read measured value block
Page 01
-61 Display group
number 001

Damaged rotor or right front ABS
wheel speed sensor -G45-


Excessive air gap between right front
ABS wheel speed sensor-G45- 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 right front ABS wheel
speed sensor -G45- and rotor
for damage
- Replace rotor/speed sensor
1) Type of DTC, this DTC is only recognized above 20 km/h (13 mph) (carry out test drive).
Стр. 21из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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V.A.G 1551 print-
out Possible cause
Repair
00285
Right front ABS
wheel speed
sensor -G45-
Mechanical
malfunction
1)
Excessive air gap
between right front ABS
wheel speed sensor-
G45- 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 right front ABS
wheel speed sensor -G45- and rotor
- Read measured value block Page 01-
61 Display group number 002
- Perform output Diagnostic Test Mode
(DTM) Page 01
-74
If the malfunction occurs again:

Outlet valve in ABS
hydraulic unit -N55-
faulty Repair Manual, Brake System, Repair
Group 45; Hydraulic unit, brake
booster/brake master cylinder - Assembly
overview; Removing and installing control
module and hydraulic unit - Replace ABS hydraulic unit -N55-
1) Type of DTC, this DTC is only recognized above 20 km/h (13 mph) (carry out test drive).
Стр. 22из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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V.A.G 1551
print-out Possible cause
Repair
00287
Right rear ABS
wheel speed
sensor -G44-
Signal outside
tolerances
1)
Open circuit, short to positive or
Ground, or loose contact in
connections between right rear ABS
wheel speed sensor -G44- and ABS
Control Module (w/EDL) -J104- - Check wiring and
connections using wiring
diagram
- Perform electrical checks
Page 01
-102

Electrical interference from other
sources (high frequency radiation e.g.
non-insulated ignition cable) - Read measured value block
Page 01
-61 Display group
number 001

Damaged rotor or right rear ABS
wheel speed sensor -G44-


Excessive air gap between right rear
ABS wheel speed sensor -G44- 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 right rear ABS wheel
speed sensor -G44- and rotor
for damage
- Replace rotor/speed sensor
1) Type of DTC, this DTC is only recognized above 20 km/h (13 mph) (carry out test drive).
Стр. 24из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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V.A.G 1551 print-
out Possible cause
Repair
00287
Right rear ABS
wheel speed
sensor -G44-
Mechanical
malfunction
1)
Excessive air gap
between right rear ABS
wheel speed sensor -
G44- 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 right rear ABS
wheel speed sensor -G44- and rotor
- Read measured value block Page 01-
61 Display group number 002
- Perform output Diagnostic Test Mode
(DTM) Page 01
-74
If the malfunction occurs again:

Outlet valve in ABS
hydraulic unit -N55-
faulty Repair Manual, Brake System, Repair
Group 45; Hydraulic unit, brake
booster/brake master cylinder - Assembly
overview; Removing and installing control
module and hydraulic unit - Replace ABS hydraulic unit -N55-
1) Type of DTC, this DTC is only recognized above 20 km/h (13 mph) (carry out test drive).
Стр. 25из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program