Connecting the fault reader V.A.G 1551 — VW

Connecting the
fault reader
V.A.G 1551
Special tools and workshop equipment required
Fault reader
V.A.G 1551
Diagnosis cable
V.A.G 1551/3
Note
Instead of the
fault reader
V.A.G 1551
, the
vehicle system tester
V.A.G 1552
can also be used. However, no print-out can be produced.
Procedure
Connect
fault reader
V.A.G 1551
with diagnosis cable
V.A.G 1551/3
.
Depending upon desired function: switch ignition on or start engine
Chapter
,
“Selectable functions”
table.
Note
If nothing is indicated on the display, the voltage supply for the diagnostic connector must be checked according to the fault finding programme
Current flow diagrams, Electrical fault finding and Fitting locations
.
If the display does not indicate as described in the work sequence:
Fault reader operating instructions
If due to an input fault
“fault in the data transfer!”
is displayed, pull cable off fault reader, reconnect and repeat work steps.
Indicated on display:
V.A.G SELF-DIAGNOSIS HELP
1 - Rapid data transfer*
Indicated on display:
V.A.G SELF-DIAGNOSIS HELP
2 - Flash code output*
Operate fault reader taking into account the information on the display:
Press key 1 for
“Rapid data transfer”
.
Press keys
0
and
1
for address word
“Engine electronics”
and confirm entry with
Q
key.
The
fault reader
V.A.G 1551
display will show the control unit identification, e.g.:
074906021S 2.5l R5 EDC G001SG 2005
Coding 00002 WSC00000
074906021S = Part No. of the control unit (for up-to-date control unit version see parts catalogue)
2.5 l = Engine displacement
R5 = Type of engine (5-cylinder in-line engine)
EDC = Injection system (Electronic Diesel Control)
G = Equipped with CCS (Cruise Control System)
SG = Gearbox type: manual gearbox (AG = automatic gearbox)
2005 or D2G = Examples of control unit software versions
Coding 00002 (coding variant; coding control unit
Chapter
)
WSC...Operation number of the V.A.G. operation
Press
→
key.
Indicated on display:
Rapid data transfer HELP
Select function XX
Refer to repair operations for further procedure.