Diesel Data: Automotive Repair

EVAP Canister Vent Valve Inspection






EVAP Canister Vent Valve Inspection

EVAP Canister Vent Valve Removal and Installation
1) Check EVAP canister air valve for damage.
2) Check resistance of air valve.

If resistance is as specified, proceed to next operation check.

If not, replace.

EVAP canister vent valve resistance (between two terminals)
25 - 30 ohms at 20 °C, 68 °F

EVAP canister vent valve resistance (between terminal and valve body)
1 Mohms or higher





3) Blow air into nozzle "A". Air should come out of nozzle "B".
4) Connect 12 V - battery to air valve terminals. In this state, blow air into nozzle "A". Air should not come out of nozzle "B".

If check result is not as described, replace air valve.