Mitsubishi Galant 9G. Manual — part 1155
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-920
DTC P2066: Fuel Level Sensor (sub) Circuit Range/Performance
1
2 3
4
5
22
21
23 24 25
26 27 28 29
30 31 32 33 34
35 36 37 38
39 40 41 42 43
1
2
AK400894
Fuel Level Sensor Circuit
FUEL LEVEL
SENSOR (SUB)
FUEL LEVEL SENSOR (MAIN)
(INTEGRATED IN FUEL PUMP MODULE)
13
2
1
2
1
11
PINK-
BLA
CK
BLA
CK
PINK-
BLACK
PINK-
BLA
CK
PINK-BLA
CK
24
GRA
Y
GRA
Y
POWERTRAIN
CONTROL
MODULE (PCM)
C-28
C-25
D-18
(MU802058)
D-17
CONBINATION METER
B-20
AK303156
CONNECTOR: D-17
AB
SERVICE
HOLE
FUEL LEVEL
SENSOR (SUB)
D-17
AK303157
SERVICE
HOLE
AB
FUEL PUMP MODULE
(INCORPORATING FUEL
LEVEL SENSOR (MAIN)
AND FUEL TANK
TEMPERATURE SENSOR)
CONNECTOR: D-18
D-18 (GR)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-921
.
CIRCUIT OPERATION
• The fuel level sensor (sub) drive signal is input in
combination meter (terminal No. 13).
.
TECHNICAL DESCRIPTION
• Branch the drive signal from the fuel level sensor
circuit, and input it into combination meter.
• The combination meter 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
.
AK303085
CONNECTOR: B-20
PCM
AB
AIR CLEANER
B-20
AK303188
CONNECTOR: C-28
C-28
AB
AK303086
CONNECTOR: C-25
C-25
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-922
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
CONSUMPTION > =30L
START
END
NO
NO
NO
YES
YES
YES
MALFUNCTION
GOOD
MONITORING
CONDITIONS
RESET ACCUMULATE
FUEL CONSUMPTION.
AK302407
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-923
Check Conditions, Judgement Criteria
• When the fuel consumption calculated from the
operation time of the injector amounts to 30 lit-
ters, the diversity of the amount of fuel in tank cal-
culated from the fuel level sensor is 2 litters or
less.
.
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function
− OBD-II Drive Cycle −
Procedure 6
.
.
TROUBLESHOOTING HINTS (The most
likely causes for this code to be set are:)
• Fuel pump module or fuel level sensor (sub)
failed.
• PCM failed.
DIAGNOSIS
Required Special Tools:
• MB991958: Scan tool (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
• MB991910: Main Harness A
STEP 1. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
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) Turn the ignition switch to the "ON" position.
(3) Read the DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC P0461 set?
YES : Go to Step 2.
NO : Go to Step 4.
STEP 2. Check fuel gauge.
Q: Is the fuel gauge functioning?
YES : Go to Step 3.
NO : Refer to GROUP 54A, Chasiss Electrical
−
Combination Meters Assembly and Vehicle Speed
Sensor
− Symptom Chart
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
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