Inspection Procedure 2

Evaporative emission control system malfunctions (when fuel cap is removed, pressure releasing noise is heard)

DIAGNOSIS

STEP 1. Check that the vapor line piping is correct. (hose not damaged, no kinks,etc.)

Q: Is the vapor line correct?

YES: Go to Step 2.

NO: Repair it. Then go to Step 5.

STEP 2. Check for breakage, bending or clogging of the vapor line.

Q: Is the vapor line in good condition?

YES: Go to Step 3.

NO: Repair or replace. Then go to Step 5.

STEP 3. Check the fuel cap for damage.

Q: Is the fuel cap in good condition?

YES: Go to Step 4.

NO: Replace the cap. Then go to Step 5.

STEP 4. Check the operation of the fuel tank pressure control valve.

Q: Is the fuel tank pressure control valve operating correctly?

YES: Go to Step 5.

NO: Replace the valve. Then go to Step 5.

STEP 5. Check symptoms.

Q: Is the evaporative emission control system operating correctly?

YES: Finish

NO: Return to step 1.