Mitsubishi Lancer Evolution 7. Manual — part 177
MPI -
Special Tools
13A-7
SPECIAL TOOLS
Tool
Number
Name
Use
B
A
C
D
MB991223
A: MB991219
B: MB991220
C: MB991221
D: MB991222
Harness set
A: Test harness
B: LED harness
C: LED harness
adapter
D: Probe
D
Check at the ECU terminals
A: Connector pin contact pressure inspection
B: Power circuit inspection
C: Power circuit inspection
D: Commercial tester connection
MB991502
MUT-II sub
assembly
D
Reading diagnosis code
D
MPI system inspection
MB991348
Test harness set
D
Inspection using an analyzer
MB991709
Test harness
D
Measurement of voltage during trouble-
shooting
D
Inspection using an analyzer
D
Idle speed control servo (stepper motor)
check
MB991536
Check harness for
TPS adjustment
D
Adjustment of throttle position sensor
D
Measurement of voltage during trouble-
shooting
MB991658
Test harness
D
Measurement of voltage during trouble-
shooting
D
Inspection using an analyzer
MD998464
Test harness
(4 pin, square)
D
Measurement of voltage during trouble-
shooting
D
Oxygen sensor (front) check
MPI -
Special Tools
13A-8
Tool
Use
Name
Number
MD998478
Test harness
(3-pin, triangle)
D
Measurement of voltage during trouble-
shooting
D
Inspection using an analyzer
MD998709
Adaptor hose
Measurement of fuel pressure
MD998742
Hose adaptor
MB991637
Fuel pressure
gauge set
MD998706
Injector test set
Checking the spray condition of injectors
MB991607
Injector test
harness
MD998741
Injector test
adaptor
MB991608
Clip
MPI -
Troubleshooting
13A-9
TROUBLESHOOTING
DIAGNOSIS TROUBLESHOOTING FLOW
Refer to GROUP 00 - How to Use Troubleshooting/Inspection
Service Point.
NOTE
If the engine-ECU is replaced, the immobilizer-ECU and
ignition key should be replaced together with it.
DIAGNOSIS FUNCTION
ENGINE WARNING LAMP (CHECK ENGINE LAMP)
If an abnormality occurs in any of the following items related
to the MPI system, the engine warning lamp will illuminate
or flash. If the lamp remains illuminated or if the lamp
illuminates while the engine is running, check the diagnosis
code output.
However, the warning lamp will illuminate as bulb check for
5 seconds whenever the ignition switch is turned to the ON
position.
Engine warning lamp inspection items
Code No.
Diagnosis item
-
Engine-ECU
P0100
Air flow sensor system
P0105
Barometric pressure sensor system
P0110
Intake air temprature sensor system
P0115
Engine coolant temperature sensor system
P0120
Throttle position sensor system
P0130
Oxygen sensor (front) system
P0135
Oxygen sensor heater (front) system
P0136
Oxygen sensor (rear) system
P0141
Oxygen sensor heater (rear) system
P0201
No.1 injector system
P0202
No.2 injector system
P0203
No.3 injector system
P0204
No.4 injector system
P0325
Detonation sensor system
P0335
Crank angle sensor system
P0340
Camshaft position sensor system
P0403
EGR control solenoid valve system
Engine warning lamp
(check engine lamp)
MPI -
Troubleshooting
MPI -
Troubleshooting
13A-10
Code No.
Diagnosis item
P0443
Purge control solenoid valve system
P0500
Vehicle speed sensor system
P0505
Idle speed control system
P0551
Power steering fluid pressure switch
P1104
Waste gate solenoid valve system
P1105
Fuel pressure control solenoid valve system
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.
METHOD OF READING AND ERASING DIAGNOSIS
CODES
Refer to GROUP 00 - How to Use Troubleshooting/Inspection
Service Points.
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 harnesses 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.
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