A6 Quattro Sedan V6-3.0L (AVK) (2002)
Canister Purge Control Valve: Testing and Inspection
Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-, Checking
Special tools and equipment
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VAG 1526A
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VAG 1527B
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VAG 1594A
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VAG 1598/31
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VAS5051 with VAS5051/1
Checking for leaks
When there is no electrical supply, solenoid valve remains closed.
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Disconnect hoses from EVAP canister purge regulator valve but leave electrical connector plugged in.
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Connect auxiliary hose to one connection of EVAP canister purge regulator valve.
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Connect testing and information system VAS5051 and select vehicle system "01 - Engine electronics". Ignition must be switched on.
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Initiate Output Diagnostic Test Mode (DTM) and activate evaporative emission (EVAP) canister purge regulator valve -N80-. See: Computers and
Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/Output Diagnostic Test Mode (DTM) (Function 03)
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The valve should click ...
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... and should open and close (check by blowing into auxiliary hose).
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Press <- button to end function "03 - Final Control Diagnosis", also known as Output Diagnostic Test Mode (DTM).
If valve does not open and close properly:
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Replace evaporative emission (EVAP) canister purge regulator valve -N80-.
If the injector does not click:
Checking internal resistance
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Disconnect connector on EVAP canister purge regulator valve.