Diagnosis Procedure

With M.U.T.-III SE

1. Turn ignition switch OFF.
2. Disconnect EVAP purge hose from EVAP canister purge volume control valve.

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

3. Disconnect fuel tank vent hose from (B) EVAP canister.
4. Turn ignition switch ON (engine stopped).
5. On M.U.T.-III SE screen, select "ENGINE" >> "Work support" >> "EVAP SYSTEM CLOSE".
6. Apply positive pressure (not vacuum) to the hose end (A) using Vacuum/Pressure Hand Pump according to M.U.T.-III SE screen instructions.
7. Check that the applied pressure does not increase and that pressure is not held.

Is the inspection result normal? 

YES >>: Check fuel tank vent line for clogs, vent and installation condition.

NO >>: Replace EVAP canister. Refer to REMOVAL AND INSTALLATION .