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Checking electronic engine power control (electronic throttle) > < Checking voltage supply

A3 Mk1

Checking actuation
Checking actuation
   
–  Connect voltage tester -V.A.G 1527 B- to contacts 1 (positive) and 2 of the connector.
–  Initiate final control diagnosis and actuate the solenoid valve for activated charcoal filter -N80- .
t  The LED should flash.
If the LED lamp does not flash or illuminates continuously:
–  Connect test box -V.A.G 1598/31- to wiring harness for engine control unit. Do not connect engine control unit → Chapter.
  A24-0331
–  Check for open circuit and short to positive or earth in the following wiring connections:
  A24-0331
Connector
Contact		Test box -V.A.G 1598/31-
Socket
261

–  Rectify any open/short circuit as necessary. → Current flow diagrams, Electrical fault finding and Fitting locations
If the wiring is OK:
–  Replace the engine control unit → Chapter.
   

Checking electronic engine power control (electronic throttle) > < Checking voltage supply