SEAT Workshop Service and Repair Manuals

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

• ◆ Fault reader V.A.G 1551 or vehicle system tester V.A.G 1552 with cable V.A.G 1551/3
• ◆ Test box V.A.G 1598/22
• ◆ Hand multimeter V.A.G 1526 or multimeter V.A.G 1715
• ◆ Adapter set V.A.G 1594
• ◆ Current flow diagram

Test sequence

• ‒ Connect fault reader V.A.G 1551 (V.A.G 1552). Start engine and select "Address word" 01 of engine control unit. When doing this the engine must be running at idling speed.
  (Connecting fault reader and selecting engine control unit .)

• ‒ Press keys 0 and 8 for the function "Read measured value block" and confirm entry with Q key.

• ‒ Press keys 0, 1 and 8 for "Display group number 18" and confirm entry with Q key.

• ‒ Read off altitude correction factor in display zone 4.
      Specification: -50...10 %

Note:

The altitude correction factor is dependent on air pressure (barometer reading) and altitude of workshop above sea level:

If the specification is not obtained:

• ‒ Switch off ignition.
• ‒ → Pull 3 pin connector -1- off altitude sender -2-.
• ‒ Switch ignition on.
• ‒ Connect multimeter to measure voltage at connector contacts as follows:
      Contact 1 + 3
      Contact 2 + 3
      Specification: 4.5...5.5 V

If the specifications are not obtained:

• ‒ Switch off ignition.
• ‒ → Connect test box V.A.G 1598/22 to control unit wiring harness.

• ‒ → Check wiring between test box and 3 pin connector for open circuit according to current flow diagram.
      Contact 1+socket 50
      Contact 2+socket 11
      Contact 3+socket 14
      Wire resistance: Max. 1.5 ω
• ‒ Additionally check wires for short to one another.
      Specification: ∞ω
• ‒ Check wiring additionally for short circuit to battery positive.
      Specification: ∞ω

If no wiring fault is detected:

• ‒ Renew altitude sender (F96)
  , item 8.