TT Roadster L4-2.0L Turbo (BPY) (2008)
Canister Purge Control Valve: Testing and Inspection
Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80), checking
Special tools, testers and auxiliary items required
‹› Multimeter.
‹› Wiring diagram.
Test requirements
‹› Fuse (SB12) OK.
‹› The Motronic Engine Control Module (ECM) Power Supply Relay (J271) OK.
‹› The ignition switched off.
‹› Voltage for the Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) is supplied by the Motronic Engine Control Module (ECM)
Power Supply Relay (J271).
Test procedure
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Perform a preliminary check to verify the customers complaint. Refer to => [ replacing ] See: Computers and Control Systems/Engine Control
Module/Testing and Inspection/Engine Control Module (ECM) (J623).
Start diagnosis
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Remove the engine cover with air filter.
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Disconnect the Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) electrical harness connector - 1 -.
Checking internal resistance
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Using a Multimeter, check the Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) terminals 1 and 2 for resistance.