Checking the vacuum downstream of the canister purge (CP) valve

Fig 1: Engine Start Verification

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Disconnect the hose between the canister purge (CP) valve and the EVAP canister from the canister purge (CP) valve.
• Start the engine and let it idle.

  HINT: Listen to or feel the valve to ensure that it is not activated. The signal can be stopped and read off in the event of uncertainty. Feel with fingers or connect a vacuum gauge to the valve connection to determine whether there is leakage when the canister purge (CP) valve is off. There must not be any leakage. 

  Other information: 

  • To access or replace the canister purge (CP) valve, see Replacing the canister purge (CP) valve .
  Fig 2: Identifying Hoses

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 3: Identifying VCT2000 Diagnostic Tool

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 4: Identifying Canister Purge (CP) Valve

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the canister purge (CP) valve OK? 

• YES 

  Refer to Checking the canister purge (CP) valve 

• NO 

  Refer to Verification information