EVAP Canister Purge Valve 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.

With ignition switch turned OFF, disconnect connector and vacuum hoses from canister purge valve.
Remove engine cover.
Remove EVAP canister purge valve from intake manifold.
Check resistance between two terminals of EVAP canister purge valve.
If resistance is as specified, proceed to next operation check. If not, replace EVAP canister purge valve.

EVAP canister purge valve resistance

22 - 26 Ω at 20°C (68°F)

Fig 1: Measuring EVAP Canister Purge Valve Resistance
Courtesy of SUZUKI OF AMERICA CORP.
Check EVAP canister purge valve for operation using special tool as follows.
WARNING: Do not suck the air through valve. Fuel vapor inside valve is harmful.

Special Tool

(A): 09917-47011 (Vacuum Pump Gauge)
1. With connector disconnected, apply vacuum (-53 kPa (-7.69 psi) to -67 kPa (-9.72 psi)) to pipe (1). If vacuum can be applied, go to next step. If vacuum can not be applied, replace EVAP canister purge valve.
2. In this state, connect 12 V-battery to EVAP canister purge valve terminals. If vacuum can not be applied, EVAP canister purge valve is in good condition.
  If applied, replace EVAP canister purge valve.
  
  Fig 2: Inspecting EVAP Canister Purge Valve For Operation Using Special Tool
  Courtesy of SUZUKI OF AMERICA CORP.
Install EVAP canister purge valve to intake manifold.
Connect connector and vacuum hoses to canister purge valve.
Install engine cover.