1998 VOLKSWAGEN JETTA ABS

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Read measured value block
4 Display group number: 004
0.0
0.0m/s2-
1.26 /s
Indicated on display (example)

Vacant

Sender for rotation rate:
Specification when vehicle is stationary:+/- 2.5 /s
Perform electrical check from Page 01-288

Sensor for transverse acceleration:

Specification when vehicle stationary:+/- 1.5m/s2

Specification at full lock at a speed of 20 km/h (13 mph) in a left-hand
curve: the values increase steadily.

Specification at full lock at a speed of 20 km/h (13 mph) in a right-hand
curve: the values increase steadily with a negative (-) sign.

Check lateral acceleration sensor -G200- Page 01-253
Perform electrical check from from Page 01-288

Steering angle sensor:

If the steering angle sensor -G85- is tested during straight-ahead travel, then zero
compensation must also be performed.
1)

Specification at straight ahead 4.5
Perform electrical checks from Page 01-288
- Initiate basic setting Page 01-264 Display group number 060
1) During a test drive with the V.A.G 1551 scan tool or tester VAS 5051 connected and in
"Diagnosis" or "Measured value block", there is no ABS or ESP regulation. The ABS or ESP
warning lights will flash. The OBD of ABS control module (w/EDL) -J104- is terminated when a
speed of 20 km/h (13 mph) is exceeded.
Стр. 94из 129 On Board Diagnostic (OBD), performing

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Checking sensor for transverse acceleration -
G200-
1)

- Remove sensor for transverse acceleration -
G200-. When doing this, do not pull connector
off sensor for transverse acceleration -G200-.
Repair Manual, Brake System, Repair Group
45; Removing and installing parts of ESP system

Note:
All functions that have so far been carried out
with V.A.G 1551 can now also be carried out with
the tester VAS 5051.

- Connect V.A.G. 1551 scan tool.
The sensor for transverse acceleration -G200-
can be checked with the help of function "Read
measured value block", display group 005.
Read measured value block
4
1 2 3
- There are always 3 display zones -arrows-.
Display zone 2 displays the value for the sensor
for transverse acceleration -G200-.
Read measured value block
4
0.0 0.0m/s2- 1.26/s
Indicated on display: e.g. (vehicle stationary)
1) For ABS/EDL/ASR/ESP and ABS/EDL/ASR/ESP
4MOTION only
Стр. 95из 129 On Board Diagnostic (OBD), performing

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Checking brake pressure sensor 1)

Display group number 005

- Press keys 0, 0 and 5

- Confirm entry with key Q.
Read measured value block
5
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-off from the
following tables.
Read measured value block
5
- 1.06 bar
Indicated on display: e.g. (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.
1) For ABS/EDL/ASR/ESP and
ABS/EDL/ASR/ESP 4MOTION only
Стр. 97из 129 On Board Diagnostic (OBD), performing

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Read measured value block
6 Display group number: 006
0.0m/s
2

Indicated on display (example)

Vacant

Vacant

Vacant

Longitudinal acceleration sensor:
1)

Specification when vehicle is stationary:+/- 1.5m/s2

Specification when accelerating forwards: The values increase steadily.

Specification when accelerating in reverse: The values increase steadily
with a negative sign (-).

Check longitudinal acceleration sensor -G251- Page 01-259
Perform electrical check Page 01-288
1) When performing a test drive where the V.A.G 1551 scan tool or tester VAS 5051 is
connected and in diagnosis or read measured value block mode there is no ABS regulation.
The ABS warning light does not light up. The OBD of ABS control module (w/EDL) -J104- is
terminated when exceeding a speed of 20 km/h (13 mph).
Стр. 100из 129 On Board Diagnostic (OBD), performing

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Basic setting, initiating
Function 04 "Initiate basic setting" performs
several functions with ABS Mark 60:

Display group number 001 is required only to
bleed the hydraulic system Page 01
-266

Note:
The basic setting is only necessary to bleed the
hydraulic unit if at least one chamber of the brake
fluid reservoir has completely run dry.

Display group number 0401) is required to shut
off the longitudinal acceleration sensor -G251-
in order to utilize the maximum engine
performance for a test, e.g. on a rolling road
test stand Page 01
-269 .
Display group number 0602) is required to
perform a zero compensation for steering angle
sensor -G85- Page 01
-271 . Subsequently a
test drive must be performed Page 01
-284 .
Display group number 0632) is required to
perform a zero compensation for sensor for
transverse acceleration -G200- Page 01
-
275 . Subsequently a test drive must be
performed Page 01
-284 .
Display group number 0662) is required to
perform a zero compensation for Sender 1 for
brake booster -G201- Page 01
-278 .
Subsequently a test drive must be performed
Page 01
-284 .
Стр. 106из 129 On Board Diagnostic (OBD), performing

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Display group number 0691) is required to
perform a zero compensation of longitudinal
acceleration sensor -G251- Page 01
-281 .
Display group number 0932) is required to
perform a driving test Page 01
-284. It serves
to check the plausibility of the signals from the
steering angle sensor -G85-, Sensor for
transverse acceleration -G200- Sender for
Rotation Rate -G202- and sender 1 for brake
booster -G201-.
When the ABS control module (w/EDL) -J104- is
replaced, a zero compensation must be
performed for the following components:

Sensor for transverse acceleration -G200-.

Steering angle sensor -G85-.

Sender 1 for brake booster -G201-.

Longitudinal acceleration sensor -G251-.1)
When the individual sensors or sensors are
changed, a zero compensation must only be
carried out for the changed component.

1) For 4MOTION vehicles only

2) For ABS/EDL/ASR/ESP and
ABS/EDL/ASR/ESP 4MOTION only
Стр. 107из 129 On Board Diagnostic (OBD), performing

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Display group number 01: Bleeding
hydraulic unit

Special tools and equipment

Note:
All functions which could previously be
performed with V.A.G 1551 can now also
be carried out with the tester VAS 5051.
Repair Manual, Brake System, Repair
Group 47; Bleeding brake system, vehicles
with and without ABS
VAS 5234 Brake filler and bleeder unit
- Connect brake filling and bleeder unit
VAS 5234.
- Pre-bleed brake system
- Connect V.A.G 1551 scan tool and select
(address word 03) brake electronics
control module with ignition switched on;
Page 01
-163 .
Rapid data transfer HELP
Select function XX Indicated on display
- Press keys 0 and 4. (The function
"Initiating basic setting" is selected with
04).
Стр. 108из 129 On Board Diagnostic (OBD), performing

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Basic setting 2
De
pr. pedal 10X; bleed screw CLOSED
Indicated on display:
- Press key 3 on V.A.G 1551 or arrow up
key on VAS 5051
System in basic setting 17
Part. bleedin
g ended...
When all 8 cycles have been performed,
this message appears on the display:
-
Press key.
Rapid data transfer HELP
Select function XX Indicated on display:
- Press keys -0- and -6-, this ends the
output.
Rapid data transfer Q
06 - End output Indicated on display
- Confirm entry with Q key
Rapid data transfer Help
Enter address word XX
Indicated on display
Repair Manual, Brake System, Repair
Group 47; Bleeding brake system, vehicles
with and without ABS - Press C key
- Switch off ignition.
- Disconnect connection to V.A.G 1551
scan tool.
- Bleed brake system again
For vehicles with ABS/EDL/ASR/ESP:
perform zero compensation for Sender
1 for brake booster -G201- Page 01
-
278 .
Стр. 110из 129 On Board Diagnostic (OBD), performing