EVAP Canister Vent Valve Check

Reference: EVAP CANISTER REMOVAL AND INSTALLATION

NOTE: If compressed air is used to check the EVAP canister vent valve, the EVAP leak check module can become damaged, leading to fuel vapor leaks.
Check the EVAP canister vent valve only by blowing with your mouth.

Check coil resistance of EVAP canister vent valve between terminals "6" and "7" in EVAP leak check module.
If resistance is as specified, proceed to next step. If not, replace EVAP leak check module.

Coil resistance of EVAP canister vent valve

25 - 30 Ω at 20 °C (68 °F)

Fig 1: Checking Coil Resistance Of EVAP Canister Vent Valve Between Terminals 6 And 7
Courtesy of SUZUKI OF AMERICA CORP.
Remove EVAP leak check module (1) from EVAP canister.
Blow breath (2) into port (3). Air should come out of port (4).
If not, replace EVAP leak check module.
Connect 12 V-battery to terminal "6" and terminal "7" of EVAP leak check module. Blow breath into port (3).
Air should not come out of port (4).

If check result is not as specified above, replace EVAP leak check module.

WARNING: If vacuum is applied by sucking at the valve, there is a risk of inhaling harmful fuel vapor that may present inside the valve.
Be sure to use a hand vacuum pump to apply vacuum.

NOTE: If the battery is connected to the wrong terminals of the EVAP leak check module, the EVAP canister vent valve in the EVAP leak check module may be damaged.
Be sure to connect the battery to the correct terminals of the EVAP leak check module.

Fig 2: Connecting 12 V-battery To Terminal 6 And Terminal 7 Of EVAP Leak Check Module
Courtesy of SUZUKI OF AMERICA CORP.