Connecting Vehicle System Tester -V.a.g 1552- And Selecting The Control Unit For Engine Electronics - Skoda Octavia 1997 Workshop Manual

01
Operation
01 Interrogating control unit
version
02 Interrogating fault memo-
ry
03 Actuator diagnosis
04 Basic setting
05 Erasing fault memory
06 Ending output
07 Coding control unit
08 Reading measured value
block
11 Login procedure
1)
Only perform with the ignition on, if the engine does not start.
Connecting vehicle system tester
-V.A.G 1552- and selecting the control
unit for engine electronics
Special tools, test and measuring equipment and
auxiliary items required
Vehicle system tester -V.A.G 1552- with cable
-V.A.G 1551/3, 3A, 3B oder 3C-
Test conditions
• Battery voltage at least 11.5 volts
•
Earth connection to engine and gearbox O.K.
• Fuses must be OK in compliance with the current flow
diagram.
Procedure
–
Connect vehicle system tester - V.A.G 1552- with ca-
ble.
Once the vehicle system tester has been connected:
–
Switch on ignition or start
pending on the function desired.
Note
If „data transfer errors" are displayed as a result of an
incorrect entry, disconnect cable at vehicle system
tester, connect it in again and repeat all the steps.
If one of the following messages appears in the dis-
play, test the diagnostic cable
grams, Electrical Fault Finding and Fitting Locations
or Operating Instructions of vehicle system tester.
01-1 2
page
OCTAVIA 1997 1.9/74 kW (TDI) Engine, Fuel Injection and Glow Plug System
Engine not running,
ignition switched on
yes
1)
yes
yes
no
yes
yes
yes
yes
yes
01-1 page 1 engine de-
Current Flow Dia-
Self-diagnosis I
Condition
Engine idling
yes
yes
yes
yes
yes
yes
no
yes
no
V.A.G 1552
V.A.G 1551/3
Vehicle system test
The control unit does not respond
Normal driving
yes
yes
no
no
yes
yes
no
yes
no
S01-0045
HELP
Edition 12.03
S00.5139.52.20