Mitsubishi Eclipse. Manual — part 247
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-481
STEP 5. Check the evaporative emission ventilation
solenoid using scan tool MB991958 (Actuator test item 29).
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 the hose E from the evaporative emission
ventilation solenoid side.
(3) Connect the hand vacuum pump to the nipple of the
evaporative emission ventilation solenoid from which the
hoses have been disconnected.
(4) Turn the ignition switch to the "ON" position.
(5) 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.
(6) Turn the ignition switch to the "LOCK" (OFF) position, and
disconnect scan tool MB991958.
(7) Disconnect the hand vacuum pump, and connect hose E to
the evaporative emission canister.
Q: Is the evaporative emission ventilation solenoid in good
condition?
YES : Go to Step 6.
NO : Replace the evaporative emission ventilation
solenoid. Then go to Step 18.
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
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MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-482
STEP 6. Pressure test for evaporator line from hose D to
hose N.
(1) Remove the module bracket mounting bolts, and
disconnect hose E from the evaporative emission
ventilation solenoid side, and plug the hoses from which the
hoses have been disconnected.
(2) Confirm that the evaporative emission system pressure
pump (Miller number 6872A) is operating properly. Perform
the self-test as described in the manufacturer's instructions.
(3) Connect an evaporative emission system pressure pump to
the fuel filler neck.
(4) Pressure test the system to determine whether any leaks
are present.
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) manufacturer's instructions located in the lid of the
pump box.
Q: Are the evaporator line in good condition?
YES : Go to Step 17.
NO : Go to Step 7.
STEP 7. Pressure test for evaporator line from hose G to
hose N.
(1) Disconnect hose G from the evaporative emission canister
side, and plug the hose from which the pipes have been
disconnected.
(2) Perform the pressure test again.
Q: Are the evaporator line in good condition?
YES : Go to Step 8.
NO : Go to Step 10.
AC002028
HOSE E
AC
AC000186
AC002036 AC
HOSE G
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
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MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-483
STEP 8. Check for leaks in the evaporator line 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 that hose, reinstall the fuel tank. (Refer to
GROUP 13C, Fuel Tank
.) Then go to Step
18.
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 the applied vacuum does not fluctuate.
Q: Is the evaporation emission canister in good condition?
YES : Go to Step 18.
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 18.
AC002037AE
HOSE D
HOSE F
HOSE E
AC000191AB
VENT
NIPPLE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
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MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-484
STEP 10. Check for leaks in the evaporator line from hose
H and hose I.
(1) Remove the fuel filler neck protector. (Refer to GROUP
13C, Fuel Tank
(2) Disconnect hose H at the liquid separator, and then connect
a hand vacuum pump to the hose.
(3) Disconnect hose I at the fuel tank side, and then plug the
hose.
(4) Apply vacuum with the hand vacuum pump, and confirm
that the applied vacuum does not fluctuate.
Q: Are the evaporator line in good condition?
YES : Go to Step 11.
NO : Replace that hose, reinstall the fuel filler neck
protector. (Refer to GROUP 13C, Fuel Tank
.) Then go to Step 18.
STEP11. Check for leaks in the evaporator line hose G, J,
K, L and M.
(1) Remove the fuel tank and fuel filler neck assembly. (Refer
to GROUP 13C, Fuel Tank
.)
(2) The leakage test with a hand vacuum pump on each hose
from hose G, J, K, L and M.
Q: Are the hoses in good condition?
YES : Go to Step 12.
NO : Replace the hose, reinstall the fuel tank and fuel filler
neck assembly. (Refer to GROUP 13C, Fuel Tank
.) Then go to Step 18.
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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