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Regulation margin for injection corrector: checking > < Slide travel sender G149 and Dosifier N146 checking

Leon Mk2

Needle movement senderG80 checking
Needle movement sender -G80- checking
The signal of the needle movement sender is required to determine the injection start. If there is a fault, the system adopts the operative control mode for the beginning of injection (according to load and engine speed). Usually the system regulates the injection start (according to load, engine speed and temperature).
   
Special tools and workshop equipment required
t  Hand multimete -V.A.G 1526A- or multimeter -V.A.G 1715-
t  Auxiliary measuring set -V.A.G 1594A- or -V.A.G 1594C-
t  Test box -V.A.G 1598/18A-
t  Current flow diagram

Test sequence
–  Switch ignition off.
–  Disconnect the connector for the needle movement sender → Item.
   
–  Test resistance between connector contacts. Specification: 80...120 Ω
If the specification is not obtained:
–  Replace the injector cyl. 3 with the needle movement sender -G80- → Item.
If the specification is obtained:
  V96-1216
–  Connect test box -V.A.G 1598/18- to control unit wiring harness.
  V29-0062
–  Check wiring for open circuit between test box and connector using current flow diagram. Contact 1 + socket 12. Contact 2 + socket 11. Wire resistance: max. 1.5 Ω max.
–  Additionally, check wires for shorts to one another, to vehicle earth or to battery positive.Specification: ∞Ω
If no wiring fault is detected:
–  Replace diesel direct injection control unit -J248- → Chapter.
  V96-0749

Regulation margin for injection corrector: checking > < Slide travel sender G149 and Dosifier N146 checking