Mitsubishi Eclipse. Manual — part 271
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-577
STEP 5. Check the evaporative emission ventilation
solenoid using scan tool MB991958.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Disconnect hose E from the evaporative emission
ventilation solenoid side, and connect a hand vacuum
pump.
(3) Turn the ignition switch to the "ON" position.
(4) Set scan tool MB991958 to actuator test mode for item 29:
Evaporative Emission Ventilation Solenoid. When the
evaporative emission ventilation solenoid is operated, apply
a pressure on the hand vacuum pump and confirm that air
is maintained.
(5) Turn the ignition switch to the "LOCK" (OFF) position. Then
disconnect scan tool MB991958.
(6) Disconnect the hand vacuum pump, and connect hose E to
the evaporative emission canister.
Q: Is the solenoid valve in good condition?
YES : Go to Step 6.
NO : Replace the evaporative emission ventilation
solenoid. Then go to Step 27.
AC303127
AB
MB991911
16-PIN
MB991827
MB991824
AC002030
EVAPORATIVE EMISSION
VENTILATION SOLENOID
HOSE E
AC
AC002031AB
EVAPORATIVE EMISSION
VENTILATION SOLENOID
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-578
STEP 6. Pressure test for leaks in the evaporator line from
hose D to hose N.
(1) Disconnect hose E from the evaporative emission
ventilation solenoid side, and plug the hoses.
(2) Remove the fuel cap.
(3) Connect the evaporative emission system pressure pump
to the fuel filler neck.
(4) Apply a pressure on the evaporative emission system
pressure pump, and confirm that air is maintained.
NOTE: "Pressure test" in this procedure refers to the
I/M240 Simulation Test (8 simple steps) described in the
evaporative emission system pressure pump (Miller number
6872A) manufacture's instructions located in the lid of the
pump box.
(5) Disconnect the evaporative emission system pressure
pump, and reinstall the fuel cap.
(6) Connect hose E to the evaporator line.
Q: Is air maintained?
YES : Go to Step 17.
NO : Go to Step 7.
STEP 7. Pressure test for leaks in the evaporator line from
hose G to hose N.
(1) Disconnect hose G from the evaporative emission canister
side, and plug the hose.
(2) Perform the pressure test again.
Q: Is air maintained?
YES : Go to Step 10.
NO : Go to Step 8.
AC002028
HOSE E
AC
AC000186
AC002036 AC
HOSE G
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-579
STEP 8. Check for leaks in the evaporator line from hose D
to hose F.
(1) Remove the fuel tank. (Refer to GROUP 13C, Fuel Tank
(2) The leakage test with a hand vacuum pump on each hose
from hose D to hose F.
Q: Are the hoses in good condition?
YES : Go to Step 9.
NO : Replace the inferior hose, and reinstall the fuel tank.
(Refer to GROUP 13C, Fuel Tank
.) Then go
to Step 27.
STEP 9. Check for leaks in the evaporative emission
canister.
(1) Connect a hand vacuum pump to the vent nipple of the
evaporative emission canister.
(2) Plug the other two nipples or loop a hose between the other
nipples.
(3) Apply a vacuum with the hand vacuum pump, and confirm
that air is maintained.
Q: Is the evaporative emission canister in good condition?
YES : Go to Step 27.
NO : Replace the evaporative emission canister (Refer to
GROUP 17, Evaporative Emission Canister and Fuel
Tank Pressure Relief Valve
,) and reinstall
the fuel tank. (Refer to GROUP 13C, Fuel Tank
.) Then go to Step 27.
AC002037AE
HOSE D
HOSE F
HOSE E
AC000191AB
VENT
NIPPLE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-580
STEP 10. Check for leaks in the evaporator line from hose
H to hose I.
(1) Remove the fuel tank. (Refer to GROUP 13C, Fuel Tank
(2) Disconnect hose H at the liquid separator side, and then
connect a hand vacuum pump to the hose.
(3) Plug the hose I at the fuel tank side.
(4) Apply vacuum by using the hand vacuum pump, and
confirm that the applied vacuum does not fluctuate.
Q: Is air maintained?
YES : Go to Step 11.
NO : Replace the inferior hose, and reinstall the fuel tank.
(Refer to GROUP 13C, Fuel Tank
.) Then go
to Step 27.
STEP 11. Check for leaks in the evaporator line hose G, J,
K, L and hose M.
(1) Remove the filler neck assembly. (Refer to GROUP 13C,
Fuel Tank
(2) The leakage test with a hand vacuum pump on each hose
from hoses G, J, K, L and M.
Q: Are the hoses in good condition?
YES : Go to Step 12.
NO : Replace the inferior hose, and reinstall the filler neck
assembly. (Refer to GROUP 13C, Fuel Tank
.) Then go to Step 27.
AC02040 AC
HOSE H
AC002038
HOSE I
AC
AC002032
AB
HOSE G
AC
AC002039
AB
HOSE L
AC
HOSE K
HOSE M
HOSE J
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