VAG 1551 Scan Tool (ST), Connecting and Selecting 'CARB/OBD II' Address Word 33

VAG 1551 Scan Tool (ST), connecting and selecting 'CARB/OBD II' address word 33

Special tools, testers and auxiliary items
- VAG 1551/1552 scan tool with VAG 1551/3 adapter cable

Test conditions
- Fuses 15, 18 and 21 OK





- Open ashtray, remove if necessary and 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.
- Operate VAG 1551/1552 scan tool taking into account the information on the display:

Selectable functions for address word "33 CARB / OBDll"

- Press -1- button to select "Rapid data transfer" operating mode 1.
- Press the -3- button twice to select "CARB / OBD II" address word 33.

Rapid data transfer Q
33 - OBD II

Display will appear as shown

- Press -Q- button to confirm input

OBD II Scan Tool
Select mode 1.. 2.. 3.. 4.. 5.. 6.. 7..

Display will appear as shown

The following modes can be selected

Mode 1: Current data
Mode 2: Freeze frame data
Mode 3: DTC memory
Mode 4: Clear DTC memory
Mode 5: Oxygen sensor signal
Mode 6: Transfer measured values. Measured values that are not being monitored will be output
Mode 7: Interrogate DTC memory. Malfunctions which have not switched ON the MIL can be interrogated.

Note: When a mode is selected, the control module replies with a 4 on the display in front of the mode selected. Example: mode 2 will be indicated in the display with mode 42.