Checking vacuum downstream of the canister purge (CP) valve

Disconnect hose between canister purge (CP) valve and EVAP canister from the canister purge (CP) valve.
Start the engine and let it idle
Read off canister purge (CP) valve pulse signal.

There should not be vacuum in the canister purge (CP) valve when the pulse signal is 0%.

Other information
- For component location on the B52X4 T see Location of components .
- For component location on the B6304 S:
  - For 6 cylinder naturally aspirated engines -2001, see Location of components
  - For 6 cylinder naturally aspirated engines 2002, see Location of components, engine compartment
  - For 6 cylinder naturally aspirated engines 2003-, see Location of components, engine compartment .
- For component location on 6 cylinder turbocharged engines:
  - For 6 cylinder turbocharged engines -2001, see Location of components
  - For 6 cylinder turbocharged engines 2002, see Location of components, engine compartment
  - For 6 cylinder turbocharged engines 2003-, see Location of components, engine compartment .
- To access/replace the canister purge (CP) valve, see Replacing the canister purge (CP) valve .
Fig 1: Identifying Canister Purge (CP) Valve Connector Terminals
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Canister Purge (CP) Valve
Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the canister purge (CP) valve OK?