EVAP Canister Purge Valve and Its Circuit Inspection

WARNING: Do not apply vacuum by mouth; otherwise harmful fuel vapor can be breathed in.

CAUTION: Do not apply vacuum more than -86 kPa (-12.47 psi); otherwise EVAP canister purge valve could be damaged.

Prepare to operate EVAP canister purge valve as follows.
1. When using SUZUKI scan tool:
  1. Connect SUZUKI scan tool to DLC with ignition switch OFF and disconnect purge valve vacuum hoses from pipes.
  2. Turn ON ignition switch, clear DTC and select "MISC TEST" mode on SUZUKI scan tool.
    Special Tool
    1. SUZUKI scan tool
      
      Fig 1: Connecting SUZUKI Scan Tool To DLC With Ignition Switch OFF
      Courtesy of SUZUKI OF AMERICA CORP.
2. When not using SUZUKI scan tool:
  1. Disconnect purge valve vacuum hoses from pipes.
  2. Turn ON ignition switch. Using service wire, ground "C46-30" terminal of ECM connector (valve ON) (2) and unground it (valve OFF) (1).
    
    Fig 2: Disconnecting Purge Valve Vacuum Hoses From Pipes
    Courtesy of SUZUKI OF AMERICA CORP.
Check purge valve for operation and vacuum passage for clog when valve is switched ON and OFF by using SUZUKI scan tool or service wire.
If check result is not described, check vacuum hoses, purge valve referring to EVAP CANISTER PURGE VALVE INSPECTION , wire harness and connections.

WARNING: Do not suck the air through valve. Fuel vapor inside valve is harmful.

EVAP canister purge valve specification

Valve OFF: When vacuum (-53 kPa (-7.69 psi) to -67 kPa (-9.72 psi)) is applied to hose (2), vacuum is maintained .
Valve ON: When vacuum is applied to hose (2), air goes into hose (1) .
Special Tool
1. 09917-47011
  
  Fig 3: Checking EVAP Canister Purge Valve
  Courtesy of SUZUKI OF AMERICA CORP.