Work sequence

WARNING: This page is about a different variant/trim than selected.

Fig 1: Identifying Scan Tool VAG 1551 And DLC

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Connect Scan Tool (ST) VAG 1551 (or Scan Tool (ST) VAG 1552 ) with adapter cable VAG 1551/3.
After scan tool is connected, switch ignition on or start engine (depending upon desired function) table.

NOTE:

If the display remains blank, check Scan Tool (ST) VAG 1551 voltage supply → Electrical Wiring Diagrams, Troubleshooting Component Locations
If the display does not display what is described in the test procedure → scan tool operating instructions.
If due to an input malfunction "Error in communication link" is displayed, disconnect Data Link Connector (DLC) from scan tool, reconnect DLC and repeat procedure.

Indicated on display * See note

V.A.G - ON BOARD DIAGNOSTIC HELP
1 - Rapid data transfer

V.A.G - ON BOARD DIAGNOSTIC HELP
2 - Blink code output

* Operating modes 1 and 2 are displayed alternately

Operate scan tool taking into account information on display.
Press button - 1 - to select "Rapid data transfer" operating mode 1.
Press buttons - 0 - and - 1 - to insert "Engine Electronics" address word 01 and press - Q - button to confirm input.

The control module identification and coding are indicated on the display, e.g.:

021906018B MOTRONIC ME7.1 G VO6 ->
Coding 00000 WSC 00000

021906018B = Part No. of the control module (for latest control module version → parts catalog)
018B: manual transmission, 018A: automatic transmission
MOTRONIC ME7.1 = System designation (Motronic)
V06 = Program level number

Coding xxxxx = Control module coding, coding variants of Motronic Engine Control Module (ECM) J220.
WSC xxxxx = Dealership code from Scan Tool (ST) VAG 1551 , of the dealership which performed the last coding. (If the factory coding has not been changed, WSC 00000 appears)

NOTE:

Replace the control module if the control version displayed does not correspond to the vehicle → Engine Control Module (ECM), replacing .
An incorrectly coded Motronic Engine Control Module (ECM) J220 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 O2S control, activation of the Evaporative Emission (EVAP) system, etc.)
Reduced transmission life

If coding differs from the vehicle version, check control module coding → Engine Control Module (ECM), coding .

Indicated on display

Rapid data transfer HELP
Select function XX

Further measures → repair procedures.