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Renewing engine control unit > < Replacing the O-ring on the injection timing device cover

A4 Mk1

TDI Injection and Glow Plug System (4-cyl.) 07.97 > 07.99
Servicing diesel direct injection system
Wiring and component test with test box V.A.G 1598/22
 
A28-0022

Notes:

  • ◆ Use the hand multimeter V.A.G 1526 or the multimeter V.A.G 1715 and the diode test lamp V.A.G 1527 for the checks.
  • ◆ To connect the testers to the test box use the auxiliary cables from adapter set V.A.G 1594.
  • ◆ → The contact numbers on the connector correspond to the socket numbers on the test box.
Important:
To prevent damage to the electronic components, select appropriate measuring range before connecting the measuring cables and observe the test requirements.
  • ‒ Switch ignition off.
  • ‒ Remove cover of protective housing for control units.
 
N28-0123
  • ‒ → Carefully lever off the retainer bar with a screwdriver arrow-.
  • ‒ Then release connectors on control unit and pull off.
 
N24-0567
  • ‒ → Connect V.A.G 1598/22 test box to connector on wiring harness.
  • ‒ Carry out test as described in the appropriate repair procedures.

Renewing engine control unit > < Replacing the O-ring on the injection timing device cover