1998 VOLKSWAGEN JETTA lock

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V.A.G 1551
print-out Possible cause
Repair
00290
Left rear ABS
wheel speed
Sensor -G46-
Signal outside
tolerances
1)
Open circuit, short to positive or
Ground, or loose contact in
connections between left rear ABS
wheel speed sensor -G46- 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 left rear ABS wheel
speed sensor -G46-


Excessive air gap between left rear
ABS wheel speed sensor -G46- 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 rear ABS wheel
speed sensor -G46- 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. 27из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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V.A.G 1551 print-
out Possible cause
Repair
00290
Left rear ABS
wheel speed
sensor -G46-
Mechanical
malfunction
1)
Excessive air gap
between left rear ABS
wheel speed sensor -
G46- 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 rear ABS wheel
speed sensor -G46- 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. 28из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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V.A.G 1551 print-out
Possible cause
Repair
01314
Engine control module
No communication
- Read measured value block
Page 01
-61 display group number
125

Open circuit, short to
positive or Ground in data
bus wiring - Check wiring and connections of
data bus wiring using wiring
diagram
- Perform electrical checks
Page 01
-102
01315
Transmission Control
Module (TCM)
1)
No communication
- Read measured value block
Page 01-61 display group number
125

Open circuit, short to
positive or Ground in data
bus wiring - Check wiring and connections of
data bus wiring using wiring
diagram
- Perform electrical checks
Page 01
-102
1) Vehicles with automatic transmission only.
Стр. 33из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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Measured value block, reading

Note:
All functions which could previously be
performed with V.A.G 1551 can also be
performed with the tester VAS 5051.
The control module can transfer a considerable
amount of test data. This test data delivers
information on the operational condition of the
system and/or sensors connected to it. In many
cases the transferred test data supports
troubleshooting and repair. The test data has
been summarized into single display groups
because all the information cannot be
evaluated at the same time. The information
can be selected via display group numbers.
Стр. 41из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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- Connect V.A.G 1551 Scan Tool and select
address word 03 for"Brake electronics" with
ignition switched on; Page 01
-23
Rapid data transfer HELP
Select function XX Indicated on display
- Press keys 0 and 8 to select function "Read
measured value block".
Rapid data transfer Q
08 - Read measured value block Indicated on display
- Confirm entry with key Q.
Read measured value block
Enter dis
play group number XXX
Indicated on display
- Enter display group number List of selectable
display group numbers, Page 01
-64 .
Стр. 43из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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Test sequence and test tables with
measured values

Checking speed sensor allocation

Display group number 001

- Press keys 0, 0 and 1.

- Confirm entry with key Q.
Read measured value block
1
1 2 3 4
There are always 4 display zones -arrows-
in the measured value block. Decoding the
individual values in display zones 1 to 4 can
be read from the following tables.
Read measured value block 1
0 km/h 0 km/h 0 km/h 0 km/h
Indicated on display: (vehicle stationary)
Press C key for the next display group
number entry.
If the key is pressed, keys 0 and 8 for
work sequence "Read measured value
block" must be pressed again afterwards to
regain entry.
Стр. 46из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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Note:
For display group number 001 remember:
The actual wheel speeds are displayed. They serve to check the speed sensor allocation to the
wheel. (The vehicle must be raised and the wheel must be rotated by hand by a 2nd mechanic).
Read measured value block
1 Display group number: 001
0 km/h 4 km/h 0 km/h 0 km/h
Indicated on display: (Example)

Wheel speed at right rear speed sensor
(0 to 255 km/h)

Wheel speed at left rear speed sensor

(0 to 255 km/h)

Wheel speed at right front speed sensor
(0 to 255 km/h)

Wheel speed at left front speed sensor

(0 to 255 km/h)
Стр. 47из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program

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Checking speed sensor

Display group number 002

- Press keys 0, 0 and 2.

- Confirm entry with key Q.
Read measured value block
2
1 2 3 4
There are always 4 display zones -arrows-
in the measured value block. Decoding the
individual values in display zones 1 to 4 can
be read from the following tables.
Read measured value block 2
255 km/h 255 km/h 255 km/h 255 km/h
Indicated on display: (Vehicle stationary)
Press C key for the next display group
number entry.
If the key is pressed, keys 0 and 8 for
work sequence "Read measured value
block" must be pressed again afterwards to
regain entry.
Стр. 48из 81 ABS ITT Mk 20 IE On Board Diagnostic (OBD) program