Scan Tool Connecting and Initial Checks

VAG1551/VAG1552 Scan Tool (ST), Connecting And Selecting "Engine Electronics" Address Word 01


WARNING!
- When driving or riding in an airbag equipped vehicle, NEVER hold the scan tool or other test equipment in your hands or lap while in motion. Objects between you and the airbag increase the risk of injury in an accident.
- During a test drive in an airbag equipped vehicle, test equipment must always be fastened to and operated from the rear seat by a second technician.


Special tools and equipment
VAG1551 Scan Tool (ST) with VAG1551/3 adapter cable


NOTE: VAG1552 can also be used, but there is no print-out capability.


Requirements







- Fuses 28, 29, 30, 32, and 34 OK. Also fuse 31 on vehicles with front wheel drive
- All electrical consumers switched off, (e.g. lights and rear window defogger)
- A/C switched off
- Automatic transmission selector lever in position "P" or "N"
- Battery Positive Voltage (B+) OK (at least 11.5 volts)
- Ground connection on right engine carrier and on body OK.

Connecting







- Connect VAG1551 Scan Tool (ST) with VAG1551/3 adapter cable to DLC.
- Switch ignition on, or start engine, depending on function to be selected.


NOTE:
- If scan tool display remains blank, check voltage supply for Data Link Connector (DLC).
- If scan tool displays do not appear as indicated:
- If "Error in communication link" is displayed, disconnect adapter cable at scan tool, reconnect, and repeat procedure.
- Operate scan tool and advance through program sequence by following display.


Indicated on display


V.A.G ON BOARD DIAGNOSTIC HELP
1 - Rapid data transfer*
2 - Blink code output*


* Appears alternately

- Press button 1- to select "Rapid data transfer" operating mode 01.
- Press buttons -0- and 1- to insert "Engine Electronics" address word 01, and press -Q- button to confirm input.

Indicated on display (ECM identification and coding, example)


4D0907551H 2.8l V6/5V MOTR HS D02 ->
Coding 06151 WSC 00000


4D0907551H Engine Control Module (ECM) part no. (for current version of control module)
2.8L Engine displacement
V6/5V Engine type:
V-engine, 6-cylinder, 5-valve
MOTR Motronic
HS Manual transmission
AT Automatic transmission
D02 ECM software version
Coding ECM coding
WSC XXXXX Dealership number: indicates where VAG1551 scan tool was used for last coding and/or adaptation (if factory coding has not been changed, WSC 00000 is displayed)


NOTE:
If the ECM version that corresponds to the vehicle is not displayed, replace ECM. Incorrect ECM coding leads to.
- Performance problems (e.g. jerky shifting, abrupt load changes, etc.)
- Increased fuel consumption
- Elevated exhaust gas values
- Reduction in transmission service life
- Storage of non-existent malfunctions in DTC memory
- Necessary functions not being carried out (oxygen sensor control, actuation of EVAP canister system, etc.)
- Traction control on front-wheel-drive vehicles will not function (ASR warning light comes on)


- If coding differs from vehicle version, code control module, Programming Control Module (ECM) -J248-, (Function 07)
- Press -> button to advance through program sequence.


Indicated on display


Rapid data transfer HELP
Select function XX


- Continue as specified in procedures for specific OBD functions.