Mitsubishi Outlander (2003+). Manual — part 36
SPECIAL TOOLS
MULTIPORT FUEL INJECTION (MFI)
13A-7
MB991223
A: MB991219
B: MB991220
C: MB991221
D: MB991222
Harness set
A: Test harness
B: LED harness
C: LED harness
adapter
D: Probe
Check at the ECU terminals
A: Connector pin contact inspection
B: Power circuit inspection
C: Power circuit inspection
D: Commercial tester connection
MD998709
Adaptor hose
Measurement of fuel pressure
MD998742
Hose adaptor
MB991637
Fuel pressure
gauge set
Tool
Number
Name
Use
MB991223
MB991637
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-8
TROUBLESHOOTING
DIAGNOSIS TROUBLESHOOTING FLOW
M1131150000342
, GROUP 00
-
How to Use Trouble-
shooting/Inspection Service Points.
NOTE: If the engine-ECU is replaced, the steering
lock cylinder and ignition key should be replaced
together with it.
DIAGNOSIS FUNCTION
M1131155500074
ENGINE WARNING LAMP (CHECK
ENGINE LAMP)
If an abnormality occurs in any of the following items
related to the Multipoint Fuel Injection (MPI) system,
the engine warning lamp will illuminate.
If the lamp remains illuminated or if the lamp illumi-
nates while the engine is running, check the diagno-
sis code output.
MD998706
Injector test set
Checking the spray condition of
injectors
MB991607
Injector test
harness
MD998741
Injector test
adaptor
MB991608
Clip
Tool
Number
Name
Use
MD998706
MB991607
MD998741
MB991608
AK300251AB
Engine warning lamp
(check engine lamp)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-9
ENGINE WARNING LAMP INSPECTION ITEMS
Code No.
Diagnosis item
-
Engine-ECU
P0100
Air flow sensor system
P0105
Barometric pressure sensor system
P0110
Intake air temperature sensor system
P0115
Engine coolant temperature sensor system
P0120
Throttle position sensor system
P0125*
Feedback system monitor
P0130
Oxygen sensor (front) system <Sensor 1>
P0135
Oxygen sensor heater (front) system <Sensor 1>
P0136
Oxygen sensor (rear) system <Sensor 2>
P0141
Oxygen sensor heater (rear) system <Sensor 2>
P0170
Abnormal fuel system
P0201
No. 1 injector system
P0202
No. 2 injector system
P0203
No. 3 injector system
P0204
No. 4 injector system
P0300
Random cylinder mis-fire detection system
P0301*
No. 1 cylinder mis-fire detection system
P0302*
No. 2 cylinder mis-fire detection system
P0303*
No. 3 cylinder mis-fire detection system
P0304*
No. 4 cylinder mis-fire detection system
P0325
Detonation sensor system
P0335
Crank angle sensor system
P0340
Camshaft position sensor system
P0403
EGR control solenoid valve system
P0420
Catalyst deterioration system
P0443
Purge control solenoid valve system
P0500
Vehicle speed sensor system
P0505
Idle speed control system
P0551*
Power steering fluid pressure switch system
P1603*
Battery back-up line system
P1610
Immobilizer system
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-10
NOTE:
.
If the engine warning lamp illuminates because of a malfunction of the engine-ECU, communication
between MUT-II and the engine-ECU is impossible. In this case, the diagnosis code cannot be read.
After the engine-ECU has detected a malfunction, the engine warning lamp illuminates when the engine is
next turned on and the same malfunction is re-detected.However, for items marked with a "*" in the diag-
nosis code number column, the engine warning lamp illuminates only on the first detection of the malfunc-
tion.
After the engine warning lamp illuminates, it will be switched off under the following conditions.
When the engine-ECU monitored the power train malfunction three times* met set condition require-
ments, it detected no malfunction.
*: In this case, "one time" indicates from engine start to stop.
For misfiring malfunction, when driving conditions (engine speed, engine coolant temperature, etc.)
are similar to those when the malfunction was first recorded.
Sensor 1 indicates, the sensor mounted at a position closest to the engine, and sensor 2 indicates the
sensor mounted at the position second closest to the engine.
METHOD OF READING AND ERASING
DIAGNOSIS CODES
, GROUP 00
-
How to Use Trouble-
shooting/Inspection Service Points.
DIAGNOSIS USING DIAGNOSIS 2 CODES
1. Switch the diagnosis mode of the engine control
unit to DIAGNOSIS 2 mode using the MUT-II.
2. Carry out a road test.
3. Take a reading of the diagnosis code and repair
the problem location.
4. Turn the ignition switch to OFF and then back to
ON again.
NOTE: By turning the ignition switch to OFF, the
ENGINE-ECU will switch the diagnosis mode
from DIAGNOSIS 2 mode to DIAGNOSIS 1
mode.
5. Erase the diagnosis codes.
INSPECTION USING MUT-II DATA LIST
AND ACTUATOR TESTING
1. Carry out inspection by means of the data list and
the actuator test function, if there is an
abnormality, check and repair the chassis harness
and components.
2. After repairing, re-check using the MUT-II and
check that the abnormal input and output have
returned to normal as a result of the repairs.
3. Erase the diagnosis code memory.
4. Remove the MUT-II, and then start the engine
again and carry out a road test to confirm that the
problem has disappeared.
FREEZE FRAME DATA
When the engine-ECU detects a malfunction and
stores a diagnosis code, it also stores a current sta-
tus of the engine. This function is called "Freeze
frame data". By analysing this "Freeze frame" data
with the MUT-II, an effective troubleshooting can be
performed.
The display items of freeze frame data are shown
below.
DISPLAY ITEM LIST
Item No.
Data
Unit
21
Engine coolant temperature sensor
C
22
Engine speed
r/min
24
Vehicle speed
km/h
80
Long-term fuel compensation (long-term fuel trim)
%
82
Short-term fuel compensation (short-term fuel trim)
%
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