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

Refer to

, 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

Refer to

, 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

Engine coolant temperature sensor

Engine speed

r/min

Vehicle speed

km/h

Long-term fuel compensation (long-term fuel trim)

Short-term fuel compensation (short-term fuel trim)

Content .. 34 35 36 37 ..