S4 V8-4.2L (BHF) (2004)
Canister Purge Control Valve: Testing and Inspection
Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-, Checking
Recommended special tools and equipment
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V.A.G 1526A multimeter
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V.A.G 1594A connector test kit
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V.A.G 1598/31 test box
Test requirements:
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Fuse for Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- OK
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Fuel Pump (FP) Relay OK; checking. See: Computers and Control Systems/Testing and Inspection/Component Tests and General
Diagnostics/Fuel Pump (FP) Relay -J17- and Activation, Checking
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Ignition switched off.
NOTE: Voltage for Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- is supplied via the fuel pump relay.
Procedure