TT Quattro Coupe L4-1.8L Turbo (BEA) (2003)
Indicated on display
Output Diagnostic Test Mode
->
EVAP canister purge regulator valve -N80
Valve must click...
...and must open and close (can be tested by blowing into assisting hose).
If valve does not click:
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Check internal resistance of EVAP valve.
If valve does not open and close properly:
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Replace Evaporative Emission (EVAP) canister purge regulator valve -N80-.
Checking internal resistance
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Disconnect connector at EVAP valve.
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Connect multimeter at valve for resistance measurement.
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Specification: 22 to 30 ohms
If specified value is not obtained:
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Replace Evaporative Emission (EVAP) canister purge regulator valve -N80-.
If specified value is obtained:
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Check voltage supply.
Checking voltage supply
NOTE: Voltage is supplied to the EVAP valve via the Fuel Pump (FP) relay.
Test requirement:
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Fuse for the EVAP valve OK.
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Disconnect connector at EVAP valve.