Checking the canister purge (CP) valve vacuum

Fig 1: Engine Start Verification

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Connect the hose between the canister purge (CP) valve and the EVAP canister to the canister purge (CP) valve.
• Start the engine and let it run at idle speed.
• Disconnect the hose between the canister purge (CP) valve and the intake manifold from the canister purge (CP) valve.

  Check that there is a vacuum in the hose.

  Remedy as necessary.

  Fig 2: Checking For Vacuum In Hose

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Was a fault detected? 

• YES 

  Refer to Verification information 

• NO 

  Refer to Replacing the component