MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
MULTIPORT FUEL INJECTION (MFI) <3.0L>
STEP 24. Check for clogging in the evaporator line from
(2) Carry out the clogging test with a hand vacuum pump on
each hose from hose G and hose H.
Q: Are there any clogs?
YES : Replace that hose, reinstall the fuel tank. Then go to
NO : Go to Step 25.
STEP 25. Check for clogging in the evaporative emission
evaporative emission canister.
(2) Plug the other two nipples or loop a hose between the other
(3) Apply vacuum. When each nipple is unplugged, the vacuum
Q: Does the vacuum pump gauge reading fluctuate?
YES : Reinstall the fuel tank. Then go to Step 26.
the fuel tank. Then go to Step 26.
STEP 26. Test the OBD-II drive cycle.
, Procedure 1
Evaporative Emission Control
system Leak Monitor.
(2) Read the diagnostic trouble code P0450 does not reset.
Q: Are the DTCs reset?
YES : This diagnosis is complete. (If no malfunctions are not
found in all steps, an intermittent malfunction is
Cope with Intermittent Malfunction
NO : Replace the PCM.