2. Evaporative Emission Control System Malfunction
DIAGNOSISSTEP 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.