Connecting VAG 1551 Scan Tool
VAG 1551 Scan Tool (ST), connecting and selecting "Engine Electronics" address word 01Special tools, testers and auxiliary items
- VAG 1551/1552 scan tool with VAG 1551/3 adapter cable.
NOTE:
The vehicle system tester VAG 1552 can be used instead of the VAG 1551 scan tool, however a print-out is not possible.
Test conditions:
- Fuse 21 OK.
- Battery voltage at least 11 volts.
- Ground (GND) connections on engine and transmission OK.
Work sequence:
- 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 on desired function:
- Switch ignition on or start engine See Engine Control Module (ECM) functions. On Board Diagnostic Technical Data
NOTES:
- 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 communications link" is displayed, disconnect wire from VAG 1551/1552 scan tool, reconnect and repeat work step.
- Operate VAG 1551/1552 scan tool taking into account information on the display.
- Press button -1- 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 input.
The VAG 1551 scan tool display will show the control module identification, e.g.:
- 021 906 259B = Part no. of the control module.
- MOTRONIC M5.9 = Fuel injection and ignition system.
- Coding 00001 Coding variants.
Coding variants:
Coding: For following vehicles:
00000 Golf/GTI/Jetta/Passat VR6 with manual transmission
00001 Golf/GTI/Jetta/Passat VR6 with automatic transmission
NOTE:
Correct engine control module number details and coding are displayed only with the engine running at idle speed.
If the coding differs from the vehicle version, then:
- Check engine control module coding. Programming and Relearning
- Press -> button.
Indicated on display
- For additional steps see repair procedures.