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 OFF, disconnect coupler from canister purge valve.
Check resistance of EVAP canister purge valve. If resistance is as specified, proceed to next operation check. If not, replace.
Resistance of EVAP canister purge valve

Between two terminals: 30 - 34 ohm at 20 °C (68 °F)

Between terminal and body: 1 Mohm or higher

Fig 1: Checking Resistance Of EVAP Canister Purge Valve
Courtesy of SUZUKI OF AMERICA CORP.
Disconnect vacuum hoses.
With coupler disconnected, apply vacuum (-53 kPa (-7.69 psi) to -67 kPa (-9.72 psi)) to hose (1) using a special tool.
If vacuum is maintained, go to next step.

If not, replace EVAP canister purge valve.
In this state, connect 12 V-battery to EVAP canister purge valve terminals. Check that air goes into hose (2).
If air goes into hose (2), EVAP canister purge valve is in good condition.

If not, replace EVAP canister purge valve.

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

Special Tool
1. 09917-47011
  
  Fig 2: Connecting Battery To EVAP Canister Purge Valve Terminals Checking Air Goes Into Hose
  Courtesy of SUZUKI OF AMERICA CORP.