Audi Workshop Service and Repair Manuals

All the functions that were previously possible with the V.A.G 1551/1552 can be performed with the new tester VAS 5051 in operating mode Vehicle self-diagnosis:

=> Operating instructions for Vehicle Diagnosis, Testing and Information System VAS 5051.

Special tools, workshop equipment, testers, measuring instruments and auxiliary items required

• ◆ → VAS 5051 Vehicle Diagnosis, Testing and Information System
• ◆ Diagnosis cable VAS 5051/1 or VAS 5051/3

Test conditions

• ● The fuses must be OK.
• ● Earth connection between engine (on gearbox bell housing) and body (below battery) OK.

• ● The battery voltage must be at least 11.5 V.
• ● If the vehicle is equipped with an air conditioning system, this must be switched off.
• ● All electrical consumers, e.g. lights and rear window heating must be switched off.

Work sequence

• ‒ Connect tester VAS 5051 with diagnosis cable VAS 5051/1 or VAS 5051/3 as follows:
• ‒ Fit diagnosis cable connector onto diagnosis connector.
• ‒ Depending on the desired function either switch ignition on
      or
  start engine and run at idling speed. Selectable functions .

Selecting operating mode:

• ‒ Press button on display for "Vehicle self-diagnosis".

Selecting vehicle system:

• ‒ Press button "01 - Engine electronics" on display.

The control unit identification and coding are indicated on the display.

If the coding differs from the vehicle version:

• ‒ Check control unit coding and, if necessary, code engine control unit => Page 24-136

Selecting diagnosis function:

All diagnostic functions available are indicated on the display.

• ‒ Press button on display for desired function.

Note:

The display zones in functions 04 - Basic setting or 08 - Read measured value block are shown from top to bottom.

• ‒ Further measures see repair procedures.