VAG 1551 Scan Tool (ST)
DTC = Diagnostic Trouble CodeDLC = Data-Link Connector (Diagnostic socket)
MIL = Malfunction Indicator Lamp
WARNING:
- Check the airbag system wiring by visual inspection only
- Do not check continuity or resistance of the airbag igniter circuits.
- Switch off ignition before checking routing of wiring.
Connect VAG 1551 Scan Tool and Select Function (Check Control Module):
- All fuses OK according to wiring diagram
- Battery positive voltage (B+) OK (at least 9 V).
NOTE:
- The airbag system is switched off during the airbag On Board Diagnostic program sequence.
- The DTC memory can be erased only after repairs have been completed and DTC memory has been checked again.
- With the ignition switched off, connect VAG 1551 Scan Tool with adapter wire VAG 1551/1 to the Data Link Connector.
- Unclip cover for DLC below heater/ventilation controls.
- First connect black connector of VAG 1551/1 Scan Tool to black DLC connector of vehicle (voltage supply).
V.A.G. Display:
Operating modes 1 and 2 are displayed alternately.
NOTE: Do not connect the white connector if you do not get a display Check the voltage supply for VAG 1551 Scan Tooling to applicable wiring diagram.
- Connect white connector for VAG 1551 Scan Tool to vehicle DLC. The blue connector Is not used.
NOTE:
- Additional operating Instructions can be printed out by pressing the HELP button on the VAG 1551 Scan Tool.
- The -> button advances the Scan Tool program sequence.
- The PRINT button switches the printer on (indicator lamp In button lights up).
- Switch ignition on.
- Press button -1- for "Rapid data transfer" operating mode.
V.A.G. Display:
- Press buttons -1- and -5- to insert "Airbag" address word 15
V.A.G. Display:
- Press -Q- button to confirm input.
V.A.G. Display:
Airbag Control Module identification (example) will be displayed.
NOTE:
V.A.G. Display:
- If any other message appears in the display, the possible causes of the malfunction can be printed out by pressing the HELP button.
V.A.G. Display:
- The ignition must be switched on.
V.A.G. Display:
- Malfunctions have occurred at the start or during the program (external interference)
V.A.G. Display:
- Check Data Link Connector (DLC) adapter harness, voltage supply (B+) and Ground (GND) connections.
After repairing the possible causes of the malfunction, again enter address word 15 for "airbag" and press -Q- button to confirm input.
V.A.G. Display:
Then the following display will appear:
V.A.G. Display:
Airbag control module identification (example) will appear
- Press -> button
V.A.G. Display:
(selected function , such as 02 - Check DTC Memory):
NOTE: After pressing the HELP button, a selection of possible functions can be printed:
Function:
01 - Check control module version
02 - Check DTC memory
O5 - Erase DTC memory
06 - End Output DTC memory
Only listed functions are presently available for the OBD.
After pressing the -> button, the VAG 1551 Scan Tool returns to the beginning of the program.