SEAT Workshop Service and Repair Manuals

All functions which could previously be performed with V.A.G 1551/1552 can also be performed with the new tester VAS 5051 in the 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 No. 10, 13 and 14 must be OK.
• ◆ The battery voltage must be at least 11.5 V.

• ● → Earth strap -1- between engine and body OK.

Connecting VAS 5051

• ‒ → Connect connector of diagnosis cable VAS 5051/1 or VAS 5051/3 to diagnostic connection.
• ‒ Depending upon desired function:
  Switch ignition on
      or
  Start engine , Table "Selectable functions".

Selecting operating mode:

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

Selecting vehicle system:

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

Control unit identification and coding will be indicated on display.

Selecting diagnosis function:

All diagnostic functions available are indicated on the display.

• ‒ Press button on display for desired function.

Notes:

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

The following test sequences are for fault reader V.A.G 1551.

Connecting V.A.G 1551

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

• ◆ V.A.G 1551 Fault reader
• ◆ V.A.G 1551/3 Cable

Note:

The vehicle system tester V.A.G 1552 can be used instead of the fault reader V.A.G 1551, however a print-out is not possible.

Work sequence

• ‒ Connect fault reader V.A.G 1551 using cable V.A.G 1551/3.

Notes:

• ◆ If the display remains blank, check voltage supply for diagnostic connection according to fault finding programme:

=> Current flow diagrams, Electrical fault finding and Fitting locations

• ◆ If the display does not indicate as described in the work sequence:

=> Fault reader operating instructions

• ◆ If due to an input fault "Fault in the data transfer!" is displayed, pull wire off fault reader, reconnect and repeat work step.

* Appears alternately

• ‒ Operate fault reader taking into account the information on the display:
• ‒ Depending upon desired function:
  Switch ignition on
      or
  Start engine => Page 01-5, Table "Selectable functions".
• ‒ Press key 1 for "Rapid data transfer".
• ‒ Press keys 0 and 1 for address word "Engine electronics" and confirm entry with Q key.

• ◆ 06A 906 032 AH = Part No. of control unit (for latest control unit version see parts catalogue)
• ◆ 1.8 ltr. = Engine displacement
• ◆ R4/5VT = Engine configuration (4-cylinder in-line engine, 5 valve turbo)
• ◆ HS M = Gearbox
• ◆ G = Cruise control system switched on
• ◆ 3464 = Program version number
• ◆ Coding xxxxx = Control unit coding
• ◆ WSC xxxxx = Workshop code (WSC 00000 appears until the factory settings of the data are changed)

• ‒ Press ⇒key.

• ‒ Further measures see repair procedures.