Work sequence
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 Volkswagen Jetta, 2002 Volkswagen GTI, 2001 Volkswagen Jetta, 2001 Volkswagen GTI, and 2000 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
- 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.
- Operate scan tool taking into account information on display.
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 .
- Press → button.
Indicated on display
| Rapid data transfer HELP Select function XX |
Further measures → repair procedures.