A4 Cabriolet L4-1.8L Turbo (AMB) (2005)
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Canister Purge Control Valve: Testing and Inspection
With Manufacturer's Scan Tool
Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-, Checking
Special tools and workshop equipment required
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V.A.G 1526 A Multimeter
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V.A.G 1527 B LED voltage tester
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V.A.G 1594 A Connector test kit
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V.A.G 1598/31 Text box
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VAS 5051 Vehicle diagnostic, testing and information system
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VAS 5051/1 Adapter
Checking for leaks
Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- remains closed when de-energized.
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Disconnect hoses from EVAP Canister Purge Regulator Valve -N80- but leave electrical connector connected.
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Connect auxiliary hose to one connection of EVAP Canister Purge Regulator Valve -N80-.
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Connect vehicle diagnostic, testing and information system VAS 5051 or V.A.G 1551 Scan Tool and select engine electronics control module with
"Address word" 01. Ignition must be switched on.
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Initiate output Diagnostic Test Mode (DTM) and activate EVAP Canister Purge Regulator Valve -N80-.
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The valve should click...
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...and should open and close (check by blowing into the auxiliary hose).
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End function "03 - Output Diagnostic Test Mode (DTM)" by pressing square button
If valve does not open or close properly:
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Replace EVAP Canister Purge Regulator Valve -N80-.
If the fuel injector does not click:
