Vacuum Hose Inspection; Evap Canister Purge Valve And Its Circuit Inspection; Evap Canister Purge Valve Inspection - Suzuki GRAND VITARA XL-7 Owner's Manual

ENGINE GENERAL INFORMATION AND DIAGNOSIS (H27 ENGINE) 6-1-101

Vacuum hose inspection

Check hoses for connection, leakage, clog and deterioration.
Replace as necessary.

Evap canister purge valve and its circuit inspection

1) Connect SUZUKI scan tool to DLC (1) with ignition switch
OFF and disconnect vacuum hoses from each pipe.
2) Turn ignition switch ON, clear DTC and select "MISC TEST"
mode on SUZUKI scan tool.
3) Check purge valve for operation and vacuum passage for
clog when valve is switched ON and OFF by using SUZUKI
scan tool.
If check result is not described, check vacuum hoses, purge
valve, wire harness and connections.
EVAP canister purge valve :
Valve OFF [A] : When blowing into hose "A", air should
not come out of hose "B".
Valve ON [B] : When blowing into hose "A", air should
come out of hose "B".

Evap canister purge valve inspection

1) With ignition switch OFF, disconnect coupler from canister
purge valve.
2) Check resistance between two terminals of EVAP canister
purge valve (1).
If resistance is as specified, proceed to next operation check.
If not, replace.
Resistance of EVAP canister purge valve :
28 – 35 Ω Ω Ω Ω at 20°C (68°F)
3) Disconnect vacuum hoses from intake manifold and its EVAP
canister.
4) With coupler disconnected, blow into hose "A" (1). Air should
not come out of hose "B" (2).