EVAP Canister Purge Valve and Its Circuit Inspection
EVAP Canister Purge Valve and Its Circuit Inspection1. Prepare to operate EVAP canister purge valve as follows.
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 ignition switch ON, clear DTC and select "MISC TEST" mode on SUZUKI scan tool.
When not using SUZUKI scan tool:
1. Disconnect purge valve vacuum hoses from pipes.
2. Turn ignition switch ON.
Using service wire, ground C20-6 terminal of ECM connector (valve ON) and unground it (valve OFF).
2. 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.
Valve OFF: When blowing into hose "A", air should not come out of hose "B".
Valve ON: When blowing into hose "A", air should come out of hose "B".
If check result is not described, check vacuum hoses, purge valve, wire harness and connections.
EVAP Canister Purge Valve Inspection
1. With ignition switch OFF, disconnect coupler from canister purge valve.
2. Check resistance of EVAP canister purge valve.
Resistance between two terminals : 30 - 34 Ohms at 20 °C (68 °F)
Resistance between terminal and body :1 MOhms or higher
If resistance is as specified, proceed to next operation check. If not, replace.
3. Disconnect vacuum hoses.
4. With coupler disconnected, blow into hose "A". Air should not come out of hose "B".
5. Connect 12 V-battery to EVAP canister purge valve terminals. In this state, blow hose "A". Air should come out of hose "B".
WARNING: Do not suck the air through valve. Fuel vapor inside valve is harmful.
If check result is not described, replace purge valve.