A6 Quattro Wagon V6-3.0L (AVK) (2002)
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Connect multimeter to injector to measure resistance.
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Specified value: 22 to 30 Ohms
If specification is not obtained:
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Replace evaporative emission (EVAP) canister purge regulator valve -N80-.
If specified value is obtained:
Checking power supply
Test requirements:
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Fuse for EVAP canister purge regulator valve OK.
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Fuel pump relay OK; See: Fuel Delivery and Air Induction/Fuel Pump/Fuel Pump Relay/Testing and Inspection
NOTE: The EVAP canister purge regulator valve receives its power supply via the fuel pump relay.
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Disconnect connector on EVAP canister purge regulator valve.
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Connect voltage tester VAG 1527 B as follows:
Connector
Measure to
terminal
1
Engine ground
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Operate starter briefly (engine may start).
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LED should illuminate.
If the LED does not illuminate:
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Check wiring from terminal 1 on connector via fuse to fuel pump relay for an open circuit.
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Repair open circuit, if necessary.
If the LED illuminates:
Checking activation
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Connect voltage tester VAG 1527 B to terminals 1 (positive) and 2 of connector.
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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)