Mitsubishi Montero (2002-2004). Manual — part 702
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DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-505
STEP 8. Check for leaks in the evaporator line hose F.
(1) Remove the fuel tank filler tube protector. (Refer to GROUP
13B, Fuel Tank
(2) Disconnect hose F from the evaporative emission canister
and plug hose F securely.
(3) Disconnect hose G from the evaporative emission canister
side, and connect a hand vacuum pump.
(4) Apply vacuum with the hand vacuum pump and confirm that
the vacuum holds.
(5) Disconnect the hand vacuum pump and connect hose F
and G.
Q: Does hose F hold vacuum?
YES : Go to Step 9.
NO : Replace hose F and reinstall the fuel tank filler tube
protector. (Refer to GROUP 13B, Fuel Tank
STEP 9. Check for leaks in the evaporative emission
system hoses G through N.
(1) Remove the fuel tank filler tube. (Refer to GROUP 13B,
Fuel Tank
(2) Perform a leakage test with a hand vacuum pump on each
hose from hose G to N.
Q: Does the hoses hold vacuum?
YES : Go to Step 10.
NO : Replace any damaged hose, and reinstall the fuel
tank filler tube and the fuel tank filler tube protector.
(Refer to GROUP 13B, Fuel Tank
). Go to
Step 18.
AC101767 AC
HOSE F
HOSE G
AC102673 AC
HOSE G
HOSE L
HOSE M
HOSE N
AC102646 AC
HOSE K
HOSE I
HOSE H
HOSE J
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DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-506
STEP 10. Check the check valve A.
(1) Check valve A is a one-way check valve.
(2) Check valve A should allow air to flow in only one direction.
Q: Does check valve A allow air to press in one direction
only?
YES : Go to Step 11.
NO : Replace check valve A, and reinstall the fuel tank filler
tube and the fuel tank filler tube protector. (Refer to
GROUP 13B, Fuel Tank
STEP 11. Check the check valve B.
(1) Check valve B is a one-way check valve.
(2) Check valve B should allow air to flow in only one direction.
Q: Does check valve B allow air to press in one direction
only?
YES : Go to Step 12.
NO : Replace check valve B, and reinstall the fuel tank filler
tube and the fuel tank filler tube protector. (Refer to
GROUP 13B, Fuel Tank
AC102646 AD
CHECK
VALVE A
AC002076 AB
CHECK VALVE A
AC102646 AE
CHECK
VALVE B
AC002078
CHECK VALVE B
AB
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DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-507
STEP 12. Check for cracks in the fuel tank filler tube
assembly.
Visually check for cracks in the fuel tank filler tube
assembly.
Q: Is the fuel tank filler tube assembly in good condition?
YES : Go to Step 13.
NO : Replace the fuel tank filler tube assembly and reinstall
the fuel tank filler tube protector. (Refer to GROUP
13B, Fuel Tank
STEP 13. Check for leaks in the evaporative emission
system hoses O through R.
(1) Remove the fuel tank. (Refer to GROUP 13B, Fuel Tank
).
(2) Perform a leakage test with a hand vacuum pump on each
hose from hose O to R.
Q: Does the hoses hold vacuum?
YES : Go to Step 14.
NO : Replace any damaged hose, and reinstall the fuel
tank, the fuel tank filler tube and the fuel tank filler
tube protector. (Refer to GROUP 13B, Fuel Tank
STEP 14. Check for leaks in the fuel tank.
(1) Visually check for cracks and leaks, etc.
NOTE: Carefully check the fuel pump assembly, the fuel
level sensor, the fuel tank rollover valve and fuel tank level-
ing valve installation section in the fuel tank.
AC101748
HOSE P
HOSE R
AD
HOSE O
ACX01353 AC
HOSE Q
ACX01357
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DIAGNOSTIC TROUBLE CODE PROCEDURES
13Ac-508
(2) Connect the evaporative emission system pressure pump
to the filler hose.
(3) Plug the filler hose, feed pipe, return pipe and rollover valve
nipple that are connected to the fuel tank.
NOTE: If these items are not securely plugged at this time,
the fuel could leak from the tank.
(4) Pressurize the fuel tank with the evaporative emission
system pressure pump.
(5) In the pressurized state, check for the leaks by applying
soapy water solution to each section and look for bubbles.
Q: Is the fuel tank free of leaks?
There are leaks at the fuel pump assembly, the fuel level
sensor, the fuel tank rollover valve or the fuel tank
leveling valve installation section. : After reassemble the
leaked parts, check again that there are no leaks.
Reinstall the fuel tank, the fuel tank filler tube and the
fuel tank filler tube protector. (Refer to GROUP 13B,
Fuel Tank
There are leaks at the fuel tank. : Replace the fuel tank,
and reinstall the fuel tank filler tube and the fuel tank
filler tube protector. (Refer to GROUP 13B, Fuel Tank
There are no leaks. : Reinstall the fuel tank, the fuel tank
filler tube and the fuel tank filler tube protector. (Refer
to GROUP 13B, Fuel Tank
). Go to Step 15 .
STEP 15. Check for leaks in the evaporative emission
system hose C and hose D.
(1) Remove the fuel tank. (Refer to GROUP 13B, Fuel Tank
).
(2) Perform a leakage test with a hand vacuum pump on each
hose C and D.
Q: Does the hoses hold vacuum?
YES : Reinstall the fuel tank. (Refer to GROUP 13B, Fuel
Tank
NO : Replace any damaged hose and reinstall the fuel
tank. (Refer to GROUP 13B, Fuel Tank
). Go
to Step 18.
ACX01356
ACX01354 AD
HOSE C
AC102448
HOSE D
AC
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