light VOLKSWAGEN JETTA 1998 User Guide

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The PRINT key is used for switching on the
printer (warning lamp in key comes on).

- Switch ignition on.

- Switch on printer with Print key (indicator lamp in
key lights up).

- Press key -1- for "Rapid data transfer" operating
mode.
Rapid data transfer HELP
Enter address word XX Indicated on display
- Press keys -0- and -3-; 03 inputs the address
word of the vehicle system to be tested "Brake
electronics".
Rapid data transfer Q
03 - Brake electronics Indicated on display
- Confirm input with Q key.
1J0 907 379 D ABS 20 IE CAN 0001
Coding 03604 WSC XXXXX
Display shows e.g.
Displayed is:
e.g. (1J0 907 379 D)
Allocation of control module see Parts catalog
Electrical Wiring Diagrams, Troubleshooting &
Component Locations binder
The control module identification number.
System designation (ABS 20 IE)
Data BUS present. (CAN)
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Automatic test sequence
The automatic test sequence checks all the
Diagnostic Trouble Code (DTC) memories
of the control modules.

- Switch ignition on.
V.A.G - On Board Diagnostic HELP
1 - Ra
pid data transfer1)
2 - Blink code output1)
Indicated on display
1) Is displayed alternately
- Press key -1- for "Rapid data transfer"
operating mode.
- Switch on printer with the Print key
(indicator lamp in key lights up).
Rapid data transfer HELP
Select function XX Indicated on display
- Press key -0- twice; 00 enters "Automatic
test sequence" function.
- Confirm entry with Q key.
1J0 907 379 D ABS 20 IE CAN0001
Coding 03604 WSC XXXXX
The V.A.G 1551 Scan Tool display will
show the control module identification, e.g.:
Thereafter all control module
identifications with eventual DTC
memory entries are displayed
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V.A.G 1551
print-out Possible cause
Repair
01312
Drive train data
bus faulty
1)


or:
ABS control module (w/EDL) -
J104- incorrectly coded

Engine control module
incorrectly coded
Repair group 01 for relevant
engine code - Check ABS control module
(w/EDL) -J104- coding Page 01
-
58
- Check engine control module
coding

Open circuit, short to positive or
Ground in the wiring - Check wiring and connections
using wiring diagram

- Perform electrical checks Page
01-102
Drive train data
bus faulty
1)

Sporadic
Ignition/starter switch turned
too slowly - Erase DTC memory Page 01-56
- No further measures required
- Inform customer
1) The DTC "Drive train data bus" will not cause the ABS warning light -K47- or warning light for
brake system -K118- to light up. The ABS function is retained over the complete range.
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Warning!
DTC memor
y was not interrogated.
Indicated on display
Note:
Adhere exactly to test sequence: First
check DTC memory, then erase
2. Ending output
- Press keys -0- and -6-, to end output.
Rapid data transfer Q
06 - End output Indicated on display
- Confirm input with Q key.
Rapid data transfer HELP
Select function XX Indicated on display
ABS warning light -K47- and warning light
for brake system -K118- must go out after
approx. 2 seconds. - Switch ignition off.
- Disconnect V.A.G 1551 Scan Tool at
Data Link Connector (DLC).
- Switch ignition on.
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ABS control module, coding

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

Warning light for ABS -K47- and warning light
for brake system -K118- flash when control
module is coded with 00000. An entry is not set
in the DTC memory.

The ABS control module (w/EDL) -J104- must
be recoded if the vehicle relevant coding is not
displayed or the control module has been
replaced.
Coding is only possible after the workshop code
(WSC) has been entered into the V.A.G 1551
Scan Tool.

Test sequence

- Connect V.A.G 1551 Scan Tool and select
(address word 03) "Brake electronics" with
ignition switched on; Page 01
-23

- Establish which type of ABS hydraulic control
module is installed Page 01
-4 .

- Establish engine code.
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List of selectable display group numbers
Display group number
Display zone
Designation
001 1 Wheel speed at left front wheel sensor (km/h)
2 Wheel speed at right front wheel sensor (km/h)
3 Wheel speed at left rear speed sensor (km/h)
4 Wheel speed at right rear speed sensor (km/h)
002 1 Wheel speed at left front speed sensor (km/h)
2 Wheel speed at right front wheel sensor (km/h)
3 Wheel speed at left rear speed sensor (km/h)
4 Wheel speed at right rear speed sensor (km/h)
003 1 Brake light switch
2 Vacant
3 Vacant
4 Vacant
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Checking brake light switch for ABS and
ABS/EDL function

Display group number 003

- Press keys 0, 0 and 3

- Confirm entry with key Q.
Read measured value block
3
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 3
0
Indicated on display
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.
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Read measured value block
3 Display group number: 003
0
Indicated on display

Vacant

Vacant

Vacant

Brake light switch:
If despite pressed foot brake a -0-, or not pressed foot brake a -1- is displayed on the
V.A.G 1551 display; perform test step No. 4 of Electrical check, Page 01
-102 .
There is also a possibility that the brake light switch has not been correctly adjusted.
Adjusting brake light switch, Page 01
-131 .
0 Brake pedal not depressed
1 Brake pedal depressed
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- Connect V.A.G 1551 Scan Tool.

- Switch ignition on.

- Press key -1- for "Rapid data transfer" operating
mode.

- Select brake electronics (address word 03);
Page 01
-23
Rapid data transfer Q
03 - Brake electronics Indicated on display
Note:
During the next work steps the ABS warning light -
K47- flashes. - Confirm entry with key Q.
- Read off control module version in V.A.G 1551
display.
-
Press key.
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-
Press key.
The ABS warning light -K47- goes out.
Function is unknown or
cannot be carried out at the moment
Indicated on display
The Output Diagnostic Test Mode (DTM) is
completed
-
Press key.
Rapid data transfer HELP
Select function XX Indicated on display
Note:
There is a malfunction in the system if
the ABS warning light -K47- does not go
out.
Adhere exactly to test sequence: First
check Diagnostic Trouble Code (DTC)
memory, then erase.
- End output (Function 06) Page 01
-56 .
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