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Passat Sedan V6-3.6L (BLV) (2008)

Powertrain Management > Emission Control Systems > Evaporative Emissions System > Canister Purge Control Valve > Component Information > Testing and Inspection

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Canister Purge Control Valve: Testing and Inspection

Diagnostic Procedures

EVAP Canister Purge Regulator Valve Checking

Special tools, testers and auxiliary items required

‹› Multimeter.

‹› Wiring diagram.

Test requirements

‹› Fuse (SB6) OK.

‹› The ignition switched off.

Test procedure

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Observe safety precautions. Refer to => [ Safety Precautions ] See: Computers and Control Systems/Service Precautions/Safety Precautions

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Observe Clean Working Conditions. Refer to => [ Clean Working Conditions ] See: Computers and Control Systems/Service Precautions/Clean
Working Conditions

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Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Computers and Control Systems/Testing
and Inspection/Scan Tool Testing and Procedures/Preliminary Check.

Start diagnosis

‹› The voltage for the Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) is supplied by the Motronic Engine Control Module

(ECM) Power Supply Relay (J271). 

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Disconnect the EVAP Canister Purge Regulator Valve (N80) electrical harness connector.

Checking internal resistance 

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Using a multimeter, check the resistance between terminals 1 and 2 of the EVAP Canister Purge Regulator Valve (N80).

Specified value: 22,0 to 30,0 ohms.

If the specified value was not obtained:

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Replace the EVAP Canister Purge Regulator Valve (N80). 

If the specification is obtained:

Checking voltage supply

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Start the engine.

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Using a multimeter, check the electrical harness connector terminal 1 to ground for voltage.

Powertrain Management > Emission Control Systems > Evaporative Emissions System > Canister Purge Control Valve > Component Information > Testing and Inspection

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