Mitsubishi Outlander GS45X. Manual — part 596
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-207
STEP 13. Replace the throttle body assembly.
(1) Replace the throttle body assembly.
(2) Turn the ignition switch to the "ON" position.
(3) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC P0123 set?
YES : Replace the ECM. When the ECM is replaced,
register the ID code. Refer to GROUP 42B, Diagnosis
− ID Code Registration Judgment Table <Vehicles
with KOS>
P.42B-15
or GROUP 42C, Diagnosis
− ID
Codes Registration Judgment Table <Vehicles with
WCM>
P.42C-10
. Then go to Step 14.
NO : The inspection is complete.
STEP 14. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) After the DTC has been deleted, read the DTC again.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC P0123 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-208
DTC P0125: Insufficient Coolant Temperature for Closed Loop Fuel Control
.
AK603948
1 2
1 2
1
2
3 4 5 6 7 8 9 10 11 12 13 14 15 16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
YELLO
W
-GREEN
YELLO
W
-BLUE
ENGINE
CONTROL
MODULE
ENGINE COOLANT
TEMPERATURE SENSOR
B-09
(MU802406)
B-10
ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT
2
27
1
26
AC
5V
AK704101
Water hose
AB
Connector: B-09
B-09 (B)
AK704090AB
Connector: B-10
B-10 (GR)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-209
CIRCUIT OPERATION
• 5-volt voltage is applied to the engine coolant
temperature sensor output terminal (terminal No.
1) from the ECM (terminal No. 26) via the resistor
in the ECM. The ground terminal (terminal No. 2)
is grounded with ECM (terminal No. 27).
• The engine coolant temperature sensor is a neg-
ative temperature coefficient type of resistor. It
has the characteristic that when the engine cool-
ant temperature rises the resistance decreases.
• The engine coolant temperature sensor output
voltage increases when the resistance increases
and decreases when the resistance decreases.
.
TECHNICAL DESCRIPTION
• The engine coolant temperature sensor converts
the engine coolant temperature to a voltage and
outputs it.
• The ECM checks whether this voltage is within a
specified range.
.
DESCRIPTIONS OF MONITOR METHODS
• Engine coolant temperature sensor output volt-
age drops from over 40
°C (104°F) to under 40°C
(104
°F) and keeps under 40°C (104°F) for 5 min-
utes.
• Engine coolant temperature sensor output volt-
age does not reach close loop enable tempera-
ture within specified period when engine coolant
temperature sensor output voltage at engine start
is under 7
°C (45°F).
.
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)
• Mass airflow sensor
• Intake air temperature sensor
.
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-210
DTC SET CONDITIONS <Range/Performance problem
− drift>
Logic Flow Chart
.
Check Conditions, Judgement Criteria
• Engine coolant temperature decreases from
higher than 40
°C (104°F) to lower than 40°C
(104
°F).
• Then the engine coolant temperature has contin-
ued to be 40
°C (104°F) or lower for 5 minutes.
• However, time is not counted when fuel is shut
off.
.
End
No
No
Malfunction
Good
300secs have passed
without fuel cut?
No
Over 40˚C (104˚F)
Over 40˚C (104˚F)
Under 40˚C (104˚F)
No
AK900355
Start
Yes
Yes
Yes
Yes
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