Work sequence
WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 1999 Volkswagen Jetta, 1999 Volkswagen Golf, 1999 Volkswagen Cabrio, 1998 Volkswagen Jetta, and 1998 Volkswagen Golf. However, it is still accessible from the selected car via links, so may be relevant.
- Open ashtray and remove, then slide cover for diagnostic connections to left (arrow).
- Connect VAG 1551/1552 scan tool with VAG 1551/3 adapter cable.
Depending upon desired function:
- Switch ignition on or start engine. See ENGINE CONTROL MODULE (ECM) FUNCTIONS .
NOTE:
- If the display does not show as indicated in the work sequence:
- See VAG 1551 scan tool operating instructions
- If due to an input malfunction "Error in communication link" is displayed, disconnect wire from VAG 1551/1552 scan tool, reconnect and repeat work step.
Indicated on display (operating modes 1 and 2 are displayed alternately)
Operate VAG 1551/1552 scan tool taking into account the information on the display:
- Press -1- button to select "Rapid data transfer" operating mode 1.
- Press buttons -0- and -1- to select "Engine Electronics" address word 01 and press -Q- button to confirm.
The VAG 1551 scan tool display will show the ECM identification. See Fig 3 for example.
- 037 906 259B = Part no. of the ECM (for latest control module version, see parts catalog)
- MOTRONIC M5.9 = Injection and ignition system
- AT V02 = Automatic transmission with Motronic system version 02
- HS V02 = Manual transmission with Motronic system version 02
- Coding 00003 = Coding variants
- WSC = Workshop code
Coding variations : See CODE CONTROL MODULE (SCAN TOOL FUNCTION 07) ).
NOTE:
Correct control module number details and coding are only given at idle speed.
If the coding differs from the vehicle version, then:
- Check control module coding: see CODE CONTROL MODULE (SCAN TOOL FUNCTION 07) .
- Press --> button.
Indicated on display
- For additional steps see repair procedures.