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Activated charcoal filter system > < Test prerequisites

Golf Mk4

Checking voltage supply and wiring to control unit
Checking voltage supply and wiring to control unit
–  Remove storage compartment on driver's side: → Rep. Gr.68.
–  Disconnect 6-pin connector for accelerator pedal position sender.
–  Switch on ignition.
–  Connect multimeter to measure voltage to following connector contacts:
Contact 1 + earth
Contact 1 + 5
Contact 2 + earth
Contact 2 + 3
   
Specification: at least. 4.5 V.
–  Switch off ignition.
If the specifications are not obtained:
  N20-10151
–  Connect 121-pin adapter cable -V.A.G 1598/31- to control unit wiring harness. The engine control unit remains disconnected.
–  Check wiring between 121-pin adapter cable -V.A.G 1598/31- and connector for open circuit referring to current flow diagram.
Contact 1 and test box socket 19
Contact 2 and test box socket 18
Contact 3 and test box socket 50
Contact 4 and test box socket 51
Contact 5 and test box socket 45
Contact 6 and test box socket 64
  N24-0943
Wire resistance: max. 1.5 Ω
If no fault in lines is detected:
–  Additionally check wiring for short circuit to one another and short circuit to positive or earth.
–  Renew accelerator position sender → Item.
  N20-10151

Activated charcoal filter system > < Test prerequisites