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Check tightness > < Inspecting function of the activated charcoal filter system solenoid valve 1 N80

Fabia Mk1

Testing the operation of the activated charcoal filter system
Testing the operation of the activated charcoal filter system
The operation of the activated charcoal filter system (tank ventilation system) is tested in the “basic setting” display group 070.
–  Connect vehicle system tester -V.A.G 1552-. Start engine and select “address word 01” for engine electronics → Chapter.
–  Select function 04 “Basic setting” and display group number 070.
   
Readout on display:
  Note
During this diagnosis no engine load must be generated as otherwise the diagnosis will be aborted; diagnosis can only be initiated again after an acceleration.
If the diagnosis is initiated by the engine control unit the display in display field 4 will switch from “Test OFF” to “Test ON”.
  
System in basic setting 70            ->
 0,0%       2,3%      0,3%     Test OFF
Readout on display:
–  Continue to run engine at high speed until display field 4 indicates specified value “TVV OK”.
  
System in basic setting 70            ->
 3.9%        0.3%     0.0%      Test ON
Readout on display:
If the display does not occur as described:
–  Interrogate the fault memory → Chapter.
If the display occurs as described:
–  Press →.
–  Switch off ignition.
  
System in basic setting 70            ->
 0.0%       1.5%      0.7%      TVV O.K.

Check tightness > < Inspecting function of the activated charcoal filter system solenoid valve 1 N80