Checking the vacuum at the EVAP canister

Fig 1: Engine Start Verification

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.
• Reconnect the hose on the canister purge (CP) valve.
• Disconnect the hose to the canister purge (CP) valve from the EVAP canister.
• Start the engine and let it run at idle speed.
• Read off the canister purge (CP) valve value. This is to determine whether the valve is activated or not.

  Check that there is a vacuum in the hose when the canister purge (CP) valve is activated.

  Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 3: Checking For Vacuum In Hose

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Is there a vacuum? 

• YES 

  Refer to Checking the EVAP canister 

• NO 

  Refer to Checking the hose