With the ignition ON and the engine OFF, you should hear a clicking sound when the EVAP canister purge solenoid valve is commanded to 50 percent with a scan tool. The clicking sound should stop when the EVAP canister purge solenoid valve is commanded to 0 percent. The rate at which the valve cycles should increase when the commanded state is increased and decrease when the commanded state is decreased.
P0449
- With the ignition ON and the engine OFF, command the EVAP vent solenoid ON and OFF with a scan tool.
- Listen for a click when the valve operates. Verify that both the ON and the OFF states are commanded.