A3 Quattro V6-3.2L (BUB) (2008)
Canister Purge Control Valve: Description and Operation
EVAP System
For all EVAP system component locations and hose routing.
For the EVAP system hose routing.
For all EVAP system removal/installation procedures and torque specifications.
Check the Technical Bulletins for information that may supersede any information included in this service information.
‹› All manufacturers special tools as well as common tools may contain a manufacturer specific part number. These tools may be substituted with an
equivalent aftermarket tool or are available for purchase through Audi.
‹› Manufacturers special tools as well as common tools that contain a manufacturer specific part number may be referenced in the test procedure
illustrations showing the tool use or installation. If the manufacturer specific tool is not being used, an equivalent aftermarket tool may be installed
in the same manner as the manufacturers special tool.
EVAP Canister Purge Regulator Valve, Checking
Special tools, testers and auxiliary items required
‹› Multimeter.
‹› Wiring diagram.
Test requirements
‹› The Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) fuse OK.
‹› The ignition switched off.
‹› Voltage for the Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) is supplied via the Motronic Engine Control Module (ECM)
Power Supply Relay (J271).
Test procedure
-
Perform a preliminary check to verify the customers complaint. Refer to => [ General Diagnosis ] See: Computers and Control Systems/Testing
and Inspection/Scan Tool Testing and Procedures/Diagnostic Modes 01 - 09.
Start diagnosis
-
Disconnect the Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) electrical harness connector - 1 -.
Checking internal resistance
-
Using a Multimeter, check the resistance between terminals 1 and 2 of the Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80).
Specified value: 22,0 to 30,0 ohms.
If the specified value was not obtained:
-
Replace the Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80).
If the specification is obtained:
Checking voltage supply
-
Using a Multimeter, check the electrical harness connector terminal 1 to 2 for voltage.