TT Quattro Coupe L4-1.8L Turbo (AWP) (2001)
Canister Purge Control Valve: Testing and Inspection
With Manufacturer's Scan Tool
Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-, Testing
Special tools and equipment
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VAG 1526 A
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VAG 1527 B
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VAG 1594 A
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VAG 1598/31
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VAS 5051 with VAS 5051/1
Testing for leaks
Evaporative emission (EVAP) canister purge regulator valve -N80- remains closed when it is not receiving any current.
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Disconnect hoses from EVAP valve but leave the electrical connector plugged in.
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Connect an auxiliary hose to one of the connections on the EVAP valve.
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Connect the vehicle diagnostic, testing and information system VAS 5051, and select the vehicle system "01 - Engine electronics" from the menu.
When doing this the engine should be idling. See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Scan
Tool Testing/With Manufacturer's Scan Tool/Scan Tool Connecting and Initial Checks/Connecting VAS 5051/VAG1551 Scan Tool
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Start output diagnostic test mode and select Evaporative emission (EVAP) canister purge regulator valve -N80-. See: Computers and Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/With Manufacturer's Scan Tool/Output Diagnostic Test
Mode (DTM) (Function 03)