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 between two terminals of EVAP canister purge valve (1).
If resistance is as specified, proceed to next operation check. If not, replace EVAP canister purge valve.

Resistance of EVAP canister purge valve

28-35 Ω at 20°C (68°F)

Fig 1: Checking Resistance Between Terminals Of EVAP Canister Purge Valve
Courtesy of SUZUKI OF AMERICA CORP.
Remove EVAP canister purge valve from intake manifold.
With coupler disconnected, apply vacuum (-53 kPa (-7.69 psi) to -67 kPa (-9.72 psi)) to pipe (1) using a special tool. Check that vacuum is manifold. If vacuum can not be maintained, replace EVAP canister purge valve.
In this state, connect 12 V-battery to EVAP canister purge valve terminals.
If vacuum can not be maintained, EVAP canister purge valve is in good condition.

If maintained, replace EVAP canister purge valve.

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

Special Tool
1. 09917-47011
Fig 2: Checking EVAP Canister Purge Valve Vacuum
Courtesy of SUZUKI OF AMERICA CORP.
Connect vacuum hoses.
Connect EVAP canister purge valve coupler securely.