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Rules for cleanliness > < Servicing diesel direct injection system
TDI®injection and glow plug system (4-cyl. unit injector)
Servicing Diesel direct injection system
Safety precautions

To prevent injuries to persons and/or damage to the injection and glow plug system, the following must be noted:

  • ◆ The ignition must be switched off before connecting or disconnecting injection or glow plug system wiring or tester cables.
  • ◆ If the engine is to be turned at starter speed, without starting, e.g. when checking compressions, disconnect unit injector connector on cylinder head.
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  • ◆ Always use measuring appliance set V.A.G 1594 A to connect test instruments (such as voltage tester V.A.G 1527 B or hand-held multimeter V.A.G 1526 A etc.).

Observe following if test and measuring instruments are required during a test drive:

Warning
  • ◆ Test equipment must always be secured on the rear seat and operated from the rear seat by a second person.
  • ◆ If test equipment is operated from the front passenger seat, the occupant could be injured by the passenger's airbag in an accident.

Rules for cleanliness > < Servicing diesel direct injection system