Connecting fault reader V.A.G 1551 and selecting function — VW

Connecting
fault reader
V.A.G 1551
and selecting function
Note
The airbag system is switched off during self-diagnosis.
The fault memory can only be erased on successful completion of repair and interrogation.
With ignition switched off, connect
fault reader
V.A.G 1551
with lead
V.A.G 1551/3
to diagnosis connector as follows:
Unclip cover for diagnosis connection on right next to ignition switch.
With ignition switched off, connect
fault reader
V.A.G 1551
using diagnosis lead
V.A.G 1551/3
.
Indicated on display:
V.A.G 1551 -D/7.0- 1.01.1997
Display will show actual software version installed (shown briefly on display)
Note
If nothing is shown in the display, check voltage supply of
fault reader
V.A.G 1551
using current flow diagram
”Current flow diagrams, Electrical fault finding and Fitting locations”
Depending on the program, additional operating instructions can be printed out by pressing the
HELP
key on
fault reader
V.A.G 1551
.
The
→
key is used for advancing the programme sequence.
The
PRINT
key is used for switching on the printer (warning lamp in key lights up).
and then following is indicated on display:
Indicated on display:
V.A.G self-diagnosis HELP
1-Rapid data transfer*
or
V.A.G self-diagnosis HELP
2-Flash code output*
Is displayed alternately
Switch on ignition.
Press key
1
for operating mode
“Rapid data transfer”
.
Indicated on display:
Rapid data transfer HELP
Input address word XX
Press keys
1
and
5
(the address word of the vehicle system to be tested
“Airbag”
is entered with 15).
Indicated on display:
Rapid data transfer Q
15 Airbag
Confirm entry with
Q
key.
and then the display shows e.g.:
The control unit identification number is displayed:
357 959 656 AIRBAG IS 55
Note
If one of the fault messages opposite appears in the display, the possible causes of the fault can be printed out with the HELP key.
Rapid data transfer HELP
Control unit not responding!
(The ignition must be switched on!)
Rapid data transfer HELP
K wire not switching to positive!
Faults have occurred at the start of or during the program (external cause of malfunction?).
Rapid data transfer ->
No signal from control unit!
Check diagnosis leads, voltage supply and earth connection.
Rapid data transfer ->
Fault in communication build-up
After rectifying the possible causes of the fault, once again enter the address word 15 for
“Airbag”
and confirm with the
Q
key.
Indicated in display after entering the address word 15:
Rapid data transfer
Tester sends the address word 15
and then following is indicated on display:
Control unit identification number is displayed.
357 959 656 AIRBAG IS 55
Press
→
key.
Indicated in display (function selection, e.g. 02 - Interrogate fault memory):
Rapid data transfer HELP
Select function XX
Note
An overview of the possible functions will be printed out when the
HELP
key is pressed:
Overview of functions
Page
01 - Interrogate control unit version
02 - Interrogate fault memory
05 - Erase fault memory
06 - End output
Chapter
Chapter
Chapter
Chapter
Only the functions listed can at present be used for self-diagnosis.
When the
→
key is pressed, the
fault reader
V.A.G 1551
program will return to the start position.