Connecting VAG 1551 Scan Tool

VAG1551 Scan Tool, Connecting And Selecting Engine Control Module

Special tools and equipment

VAG1551 Scan Tool:

- VAG1551 Scan tool


NOTE:
The VAG1552 mobile scan tool can be used instead of the VAG1551 scan tool, however a print-out is not possible.
All functions of VAG1551/1552 can also be carried out with the new tester VAS5051. Connecting VAS5051. VAS5051 Scan Tool

VAG1551/3B Cable:

- VAG1551/3B cable

Test conditions







- All fuses must be OK.
- The battery voltage must be at least 11.5 V.
- Ground (GND) connection between engine and body must be OK.

Work sequence







- Connect VAG1551 scan tool with VAG1551/3B cable.

After the scan tool has been connected:
- Depending upon desired function: Switch ignition on or start engine, Table "Selectable functions". Selectable Functions When Using VAG1551/1552 or VAS5051


NOTE:
- If the display remains blank, check voltage supply for diagnostic connection:
- If the display does not indicate as described in the work sequence:
- If due to an input malfunction "Error in data transfer!" is displayed, pull wire off scan tool, reconnect and repeat work step.


- Operate scan tool taking into account the information on the display:

Indicated on display:


VAG - On Board Diagnostic HELP
1 - Rapid data transfer*
2 - Blink code output*


* Appears alternately
- Operate scan tool 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.

Control module identification and coding are indicated on display, e.g.:


06A906032DL 1.8L R4/5VT G 0001 ->
Coding 07500 WSC 00000


- 06A 906 032 DL = Part No. of the control module (for latest control module version see parts catalog)
032 DL = manual transmission
032 GH / HF = automatic transmission
- 1.8 ltr. = Engine displacement
- R4/5VT = Engine configuration (4-Cyl. in-line engine, 5 valve, Turbo)
- G = CCS available
- 0001 = Program level number
- Coding xxxxx = Control module coding, coding variants of engine control module.
- WSC xxxxx = Dealership code from VAG1551, of the workshop who carried out the last coding, (If the factory coding has not been changed, WSC 00000 appears)


NOTE:
Replace control module if the control version displayed does not correspond to the vehicle.
An incorrectly coded engine control module leads to:
- Engine running malfunctions (gear change jerks, load change jerks, etc.)
- Increased fuel consumption
- Increased exhaust gas emissions
- Malfunctions stored in DTC memory which are not actually present
- Functions will not be performed (oxygen sensor control, activation of the Evaporative Emission (EVAP) system, etc.).
- Reduced transmission life


If the coding differs from the vehicle version, then:
- Checking control module coding, coding engine control module
- Press -> key.

Indicated on display:


Rapid data transfer HELP
Select function XX


Further measures See repair procedures.