Mitsubishi Montero Sport (2004+). Manual — part 305
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-633
STEP 15. Check the evaporative emission canister for
leaks and clogging.
(1) Remove the evaporative emission canister. (Refer to
GROUP 17, Evaporative Emission Canister and Fuel Tank
Pressure Relief Valve
(2) Connect a hand vacuum pump to the canister instead of
hose, and plug the other nipples.
(3) Apply a pressure on the hand vacuum pump, and confirm
that air is maintained.
Q: Does the evaporative emission canister hold vacuum?
YES : Go to Step 14 .
NO : Replace the evaporative emission canister. (Refer to
GROUP 17, Evaporative Emission Canister and Fuel
Tank Pressure Relief Valve
). Then go to
Step 16 .
STEP 16. Perform the OBD-II drive cycle.
(1) Confirm the repair by performing the appropriate drive
cycle. (Refer to
(2) Read the DTC.
Q: Is DTC P0456 set?
YES : Return to Step 1 .
NO : The procedure is complete.
AC004931
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-634
DTC P0461: Fuel Level Sensor Circuit Range/Performance
BL
ACK
BL
ACK
AK000579
Fuel Level Sensor Circuit
YELL
OW
YELL
OW
YELL
OW
3
6
5
3
60
2
POWERTRAIN CONTROL
MODULE (PCM)
FUEL GAUGE UNIT
METER AND GAUGE
47
41
42 43
48 49 50 51 52 53 54 55 56 57
46
45
44
58
59
60 61 62 63
64 65 66
C-90
(MU803781)
2
3 4
10 11
5 6 7 8 9
1
C-85
MU801551
1
10
15
2
11
3
12
4
13 14
5
16
6
17
7
18
8
19
9
20
E-44
1 2 3
E-30
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-635
.
CIRCUIT OPERATION
• The fuel gauge drive signal is input in PCM (ter-
minal No. 60).
.
TECHNICAL DESCRIPTION
• Branch the drive signal from the fuel gauge cir-
cuit, and input it into PCM.
• The PCM detects the amount of fuel left in the
fuel tank with this signal, and also controls the
fuel level warning light.
.
DESCRIPTIONS OF MONITOR METHODS
Detect malfunction if change of fuel level sensor out-
put voltage is small when sum of fuel injection is
large.
.
MONITOR EXECUTION
Continuous
.
MONITOR EXECUTION CONDITIONS (Other
monitor and Sensor)
Other Monitor (There is no temporary DTC stored
in memory for the item monitored below)
• Not applicable
Sensor (The sensor below is determined to be
normal)
• Not applicable
.
AK103912AC
CONNECTOR: C-85
C-85
AK200017
CONNECTOR: E-30
AC
FUEL
GAUGE
UNIT
E-30
AK103738AC
CONNECTOR: C-90
PCM
C-90(GR)
AK200018 AB
CONNECTOR: E-44
E-44
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-636
DTC SET CONDITIONS
Logic Flow Chart
.
INDICATED FUEL LEVEL
CHANGE < 2L
ACCUMULATE FUEL CONSUMPTION
THROUGH FUEL INJECTORS.
ACCUMULATED FUEL
CONSUMPTION WILL NOT
RESET WHEN KEY-OFF/ON.
ACCUMULATED FUEL >= SPECIFIED
CONSUMPTION VALUE
START
END
NO
NO
NO
YES
YES
YES
MALFUNCTION
GOOD
MONITORING
CONDITIONS
RESET ACCUMULATE
FUEL CONSUMPTION.
AK301450
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