Audi Workshop Service and Repair Manuals

Test requirements

• ● Selector lever set to "P" and handbrake applied
• ● Vehicle supply voltage OK
• ● Voltage supply and fuses for appropriate system OK

=> "Current Flow Diagrams, Electrical Fault-finding and Fitting Locations" binder

• ● Earth connections and earth point for gearbox OK

=> "Current Flow Diagrams, Electrical Fault-finding and Fitting Locations" binder

• ‒ Check earth connections for corrosion and damage and repair if necessary.
• ‒ Check battery earth strap and earth strap between battery and gearbox.

Sequence of operations

• ‒ Switch off ignition.

For vehicles up to Model Year 2000

→ Diagnosis connection is located beneath cover in rear ashtray (centre console) for vehicles up to Model Year 2000.

• ‒ Open rear ashtray (rear centre console) and remove cover for diagnosis connection.

For vehicles as of Model Year 2000

→ As of Model Year 2000 diagnosis connection is located beneath knee restraint to the left of the steering wheel.

For all vehicles:

• ‒ → Use diagnostic wire VAS 5051/1 to connect up vehicle diagnostic, testing and information system VAS 5051.

Note:

If fault message appears on display:

=> Operating instructions for vehicle diagnostic, testing and information system VAS 5051

• ‒ Switch on ignition.

→ Display on VAS 5051:

• ‒ Touch "Vehicle self-diagnosis" key.

→ Display on VAS 5051:

Note:

Touching "00 - Interrogating fault memory - entire system" in list -1- implements the automatic test sequence, i.e. fault memory interrogation takes place for all vehicle systems with self-diagnosis capability.

• ‒ → Select vehicle system "02 - Gearbox electronics".

Notes:

• ◆ Vehicle system selection prompt appears in display zone -1-.
• ◆ Vehicle systems (for all vehicle models and equipment versions) can be viewed by "scrolling" the display with the moving bar -2-.

• ‒ Wait until next display appears.

→ Display on VAS 5051:

•     2 -    Gearbox control unit identification => Page 01-38

Check the following if "Vehicle system not available" appears in zone -1- of VAS 5051 display:

• ‒ Power supply to diagnosis connection on the basis of the current flow diagram.
• ‒ Wiring from diagnosis connection to control unit

=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder

• ‒ Control-unit supply voltage, Test step 1 => Page 01-281 , Electrical check.

• ‒ → Selection can now be made from the following list of diagnosis functions -1-: