brake VOLKSWAGEN JETTA 1998 Service Manual

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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

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Display group number 40: switching off
longitudinal acceleration sensor -G251-

All functions which could previously be
performed with V.A.G 1551 can now also be
carried out with the tester VAS 5051.

Display group 040 is necessary for shutting off
longitudinal acceleration sensor -G251- in order
to utilize the maximum engine performance for
a test, e.g. on a rolling road test bed. In
addition, the all wheel drive is shut off and the
vehicle behaves like a front wheel drive vehicle.

Switch ignition off and on again to reactivate the
longitudinal acceleration sensor -G251-.

- Connect V.A.G 1551 scan tool and select
(address word 03) brake electronics control
module with ignition switched on; Page 01
-
163 .
Стр. 111из 129 On Board Diagnostic (OBD), performing

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Display group number 60: zero compensation
of steering angle sensor -G85-

Note:

All functions which could previously be
performed with V.A.G 1551 can now also be
carried out with the tester VAS 5051.

- Connect V.A.G 1551 scan tool and select
(address word 03) brake electronics control
module with ignition switched on; Page 01
-
163 .

- Start engine.

- Carry out a short test drive over a flat and level
surface. Drive straight-ahead and not faster then
20 km/h (12.5 mph) and observe the following
points:

If the steering wheel is not in the centered
position when driving straight ahead, the
steering must be corrected within the
framework of an alignment check.
Repair Manual, Suspension, Wheels,
Steering, Repair Group 44; Vehicle alignment.
Стр. 113из 129 On Board Diagnostic (OBD), performing

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Display group number 63: zero compensation
of Sensor for transverse acceleration -G200-

Note:
All functions which could previously be
performed with V.A.G 1551 can now also be
carried out with the tester VAS 5051.

Position vehicle on a flat level surface.

- Connect V.A.G 1551 scan tool and select
(address word 03) brake electronics control
module with ignition switched on; Page 01
-
163 .

- Check specifications with help of function 08
"Read measured value block" Page 01
-240 ,
Display group number 004.
First perform function 11 "Login procedure"
successfully using V.A.G 1551 scan tool
Page 01
-287
Rapid data transfer HELP
Enter address word XX Indicated on display:
- Press keys 0 and 4. (The function "Initiating
basic setting" is selected with 04).
Стр. 117из 129 On Board Diagnostic (OBD), performing

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Display group number 66: zero compensation
for Sender 1 for brake booster -G201-

Note:
All functions which could previously be
performed with V.A.G 1551 can now also be
carried out with the tester VAS 5051.

Brake pedal not depressed.

- Connect V.A.G 1551 scan tool and select
(address word 03) brake electronics control
module with ignition switched on; Page 01
-
163 .

- Check measured values with help of function 08
"Read measured value block" Page 01
-240 ,
Display group number 005.
First perform function 11 "Login procedure"
successfully using V.A.G 1551 scan tool
Page 01
-287
Rapid data transfer HELP
Enter address word XX Indicated on display:
- Press keys 0 and 4. (The function "Initiating
basic setting" is selected with 04).
Стр. 120из 129 On Board Diagnostic (OBD), performing

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Display group number 69: zero compensation
of longitudinal acceleration sensor -G251-

Note:
All functions which could previously be
performed with V.A.G 1551 can now also be
carried out with the tester VAS 5051.

Position vehicle on a flat level surface.

- Connect V.A.G 1551 scan tool and select
(address word 03) brake electronics control
module with ignition switched on; Page 01
-
163 .

- Check measured values with help of function 08
"Read measured value block" Page 01
-240 ,
Display group number 006.
First perform function 11 "Login procedure"
successfully using V.A.G 1551 scan tool
Page 01
-287
Rapid data transfer HELP
Enter address word XX Indicated on display:
- Press keys 0 and 4. (The function "Initiating
basic setting" is selected with 04).
Стр. 123из 129 On Board Diagnostic (OBD), performing

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Display group number 93: activation of ESP
driving test
The ESP driving test is used to check the
plausibility of the signals from sensor for
transverse acceleration -G200-, sender for
rotation rate -G202- and sender 1 for brake
booster -G201-.
The ESP driving test should be performed each
time parts of the ESP system are removed or
replaced.

- Connect V.A.G 1551 scan tool and select
(address word 03) brake electronics control
module (address word 03) with ignition switched
on; Page 01
-163 .
Rapid data transfer HELP
Enter address word XX Indicated on display:
- Press keys 0 and 4. (The function "Initiating
basic setting" is selected with 04).
Rapid data transfer Q
04 - Basic settin
g
Indicated on display:
- Confirm entry with key Q.
Basic setting HELP
Enter displa
y group number XXX
Indicated on display:
- Press keys 0, 9 and 3
Стр. 126из 129 On Board Diagnostic (OBD), performing

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- Confirm entry with key Q.
Basic setting 93 ON <8>
S
ystem test activated OK
Indicated on display:
The ESP driving test is activated.
ABS warning light -K47- lights up.
-
Press key.
Rapid data transfer HELP
Select function XX Indicated on display:
This completes the stationary comparison
test. - Disconnect diagnostic connector.
- Start engine.
- Depress brake pedal firmly (brake
pressure of more than 35 bar) until the
ESP Control Lamp -K155- flashes.
Стр. 127из 129 On Board Diagnostic (OBD), performing

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Login procedure

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.

The login procedure can only be performed
once per calibration.
Coding is only possible after the workshop code
(WSC) has been introduced into V.A.G 1551 or
the new tester VAS 5051.

Test sequence

- 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
Enter address word XX Indicated on display:
- Press key 1 and 1 (Function "Login procedure"
is introduced with 11).
Rapid data transfer Q
11 Codin
g 2
Indicated on display:
- Confirm entry with key Q.
Coding 2 HELP
Enter code number XXXXX Indicated on display:
- Enter code number 40168.
- Confirm entry with key Q.
Rapid data transfer HELP
Select function XX Indicated on display:
Стр. 129из 129 On Board Diagnostic (OBD), performing

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Contact
Wiring connection to component ...
13
ASR/ESP button -E256-
14
Coding bridge to contact 38 (vehicles with ABS and ABS/EDL/ASR front wheel
drive only)
15
Data bus wire Wiring diagrams
16 Ground point on left-hand longitudinal member
17
Vacant
18
Sender 1 for brake booster -G201- voltage supply
19
Sender 1 for brake booster -G201- signal wire
20
Sender 1 for brake booster -G201- ground wire
21
Vacant
22
Vacant
23
Vacant
24

Ground wire for sensor for transverse acceleration -G200- and sender for
rotation rate -G202-
Ground wire for ESP-sensor unit -G419-, vehicles from 02.02
25

Vacant
Data bus wire for ESP-sensor unit -G419-, vehicles from 02.02
26
Voltage supply for sensor for transverse acceleration -G200- and sender for
rotation rate -G202-
Стр. 7из 38 Electrical check of Mark 60