On Board Diagnostic (OBD), Performing

On Board Diagnostic (OBD), performing
Supplementary information
^ Repair Information, 6 Spd. Automatic Transmission O9G
^ Wiring Diagrams
^ Parts Supplier

Requirements
- Selector lever in position "P" and parking brake applied
- Vehicle voltage supply OK
- Fuses OK
- All Ground connections for transmission OK:
- Check Ground connections for corrosion and poor contact; repair if necessary.

Note: The Ground connecting point is located in the engine compartment (below the battery).

- Check battery Ground strap and Ground strap between battery and transmission.

Performing vehicle OBD or self-diagnosis
Connecting the Vehicle Diagnosis, Test and Information System VAS 5051 to, among other things, read Diagnostic Trouble Code (DTC) memories, perform default settings or the read measured value blocks.

Vehicle Diagnosis, Testing and Information System VAS 5051
The operating modes "Vehicle self-diagnosis", "Measurement technology" and "Guided fault finding" offer the most complete of current technical information.

It replaces and expands all functions that were previously possible with the VAG 1551 Scan Tool or Vehicle test system VAG 1552.

Further information concerning this subject can be found in Self-study program No. 202.