Mitsubishi Outlander GS45X. Manual — part 815
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-193
STEP 3. Check the engine coolant temperature sensor.
(1) Disconnect the engine coolant temperature sensor
connector B-09.
(2) Remove the engine coolant temperature sensor.
(3) With the temperature sensing portion of engine coolant
temperature sensor immersed in hot water, check
resistance.
Standard value:
14
− 17 kΩ [at −20°C (−4°F)]
5.1
− 6.5 kΩ [at 0°C (32°F)]
2.1
− 2.7 kΩ [at 20°C (68°F)]
0.9
− 1.3 kΩ [at 40°C (104°F)]
0.48
− 0.68 kΩ [at 60°C (140°F)]
0.26
− 0.36 kΩ [at 80°C (176°F)]
(4) Apply 3M
™ AAD part number 8731 or equivalent on the
screw section of the engine coolant temperature sensor.
(5) Install the engine coolant temperature sensor, and tighten
to the specified torque.
Tightening torque: 29
± 10 N⋅m (22 ± 7 ft-lb)
Q: Is the measured resistance at the standard value?
YES : Replace the engine coolant temperature sensor. Then
go to Step 5.
NO : Go to Step 4.
AK700231
AK700232 AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-194
STEP 4. Check for harness between the engine coolant
temperature sensor connector B-09 and the ECM
connector B-10.
(1) Disconnect the engine coolant temperature sensor
connector B-09 and the ECM connector B-10.
(2) Measure the resistance between the engine coolant
temperature sensor connector B-09 and the ECM
connector B-10.
a. Connector B-09 (terminal No. 1) and Connector B-10
(terminal No. 26).
b. Connector B-09 (terminal No. 2) and Connector B-10
(terminal No. 27).
• Should be less than 2 ohms.
Q: Is the harness wire in good condition?
YES : Replace the ECM. When the ECM is replaced,
register the ID code. Refer to GROUP 42B, Diagnosis
− ID Codes 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 5.
NO : Repair it. Then go to Step 5.
STEP 5. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic Function
− OBD-II Drive Cycle − Pattern 22
(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0118 set?
YES : Replace the ECM. When the ECM is replaced,
register the ID code. Refer to GROUP 42B, Diagnosis
− ID Codes Registration Judgment Table <Vehicles
with KOS>
P.42B-15
or GROUP 42C, Diagnosis
− ID
Codes Registration Judgment Table <Vehicles with
WCM>
P.42C-10
.
NO : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points How to
Cope with Intermittent Malfunctions
P.00-15
.
AK700234
1
2
16 15 14 13 12 11 10 9 8 7 6 5 4 3
2
1
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
AB
B-09 harness
connector:
component side
B-10 harness
connector:
component side
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-195
DTC P0121: Throttle Position Sensor (main) Plausibility
.
TECHNICAL DESCRIPTION
Compare the actual measurement of volumetric effi-
ciency by a mass airflow sensor signal with volumet-
ric efficiency estimated from a throttle position
sensor (main) signal.
.
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
.
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-196
DTC SET CONDITIONS
Logic Flow Chart
Check Conditions
• The difference between the actual volumetric effi-
ciency and the volumetric efficiency estimated by
the throttle position sensor (main) is 0 % or more.
Or, the volumetric efficiency is 60 % or less.
• The engine speed is between 750 and 3,000
r/min. Or, the throttle position sensor (main) out-
put voltage is 3 volts or less.
Judgment Criterion
• For 0.4 second, the difference between the actual
volumetric efficiency and the volumetric efficiency
estimated by the throttle position sensor (main) is
33 % or more.
.
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function
− OBD-II Drive Cycle
.
.
TROUBLESHOOTING HINTS (The most
likely causes for this code to be set are:)
• Throttle position sensor (main) system failed.
• Intake system vacuum leak.
• There is some foreign matter around mass air-
flow sensor.
• ECM failed.
AK604351
Start
Yes
Yes
Yes
No
No
No
Continuous failure
for specified time
Malfunction
End
Good
Monitoring
conditions
|Ec-calculated Ec|
> specified value
Ec: load value
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