2007 MITSUBISHI LANCER EVOLUTION engine valve

MPI -Troubleshooting13A-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
P0100Air flow sensor system
P0105Barometric pressure sensor system
P0110Intake air temprature sensor system
P0115Engine coolant temperature sensor system
P0120Throttle position sensor system
P0130Oxygen sensor (front) system
P0135Oxygen sensor heater (front) system
P0136Oxygen sensor (rear) system
P0141Oxygen sensor heater (rear) system
P0201No.1 injector system
P0202No.2 injector system
P0203No.3 injector system
P0204No.4 injector system
P0325Detonation sensor system
P0335Crank angle sensor system
P0340Camshaft position sensor system
P0403EGR control solenoid valve system
Engine warning lamp
(check engine lamp)

MPI -TroubleshootingMPI -Troubleshooting13A-10
Code No. Diagnosis item
P0443Purge control solenoid valve system
P0500Vehicle speed sensor system
P0505Idle speed control system
P0551Power steering fluid pressure switch
P1104Waste gate solenoid valve system
P1105Fuel pressure control solenoid valve system
NOTE
If the engine warning lamp illuminates because of a malfunction of the engine-ECU, communication between
MUT-IIand 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-IIDATA 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-IIand 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.

MPI -Troubleshooting13A-12
INSPECTION CHART FOR DIAGNOSIS CODES
Code No.Diagnosis itemReference page
P0100Air flow sensor system13A-13
P0105Barometric pressure sensor system13A-15
P0110Intake air temprature sensor system13A-16
P0115Engine coolant temperature sensor system13A-19
P0120Throttle position sensor system13A-21
P0130Oxygen sensor (front) system13A-24
P0135Oxygen sensor heater (front) system13A-26
P0136Oxygen sensor (rear) system13A-27
P0141Oxygen sensor heater (rear) system13A-29
P0201No.1 injector system13A-30
P0202No.2 injector system13A-31
P0203No.3 injector system13A-32
P0204No.4 injector system13A-33
P0325Detonation sensor system13A-34
P0335Crank angle sensor system13A-35
P0340Camshaft position sensor system13A-37
P0403EGR control solenoid valve system13A-39
P0443Purge control solenoid valve system13A-41
P0500Vehicle speed sensor system13A-43
P0505Idle speed control system13A-44
P0551Power steering fluid pressure switch system13A-46
P1104Waste gate solenoid valve system13A-47
P1105Fuel pressure control valve system13A-48
P1500Alternator FR terminal system13A-49
P1603Battery backup line malfunction13A-50
P1610Immobilizer system13A-51

MPI -Troubleshooting13A-39
Code No. P0403 EGR control solenoid valve systemProbable cause
Inspection Range
DThe battery voltage is 10 V or more.
Evaluation Conditions
DSolenoid coil’s surge voltage (battery voltage +2 V) is not detected when EGR
control solenoid valve is turned OFF from ON.DEGR control solenoid valve malfunction
DEGR control solenoid valve circuit disconnection,
short-circuit, or connector contact defect
DEngine-ECU malfunction
OK
To the next page
OK
Check the harness between the EGR
control solenoid valve and
engine-ECU.
DCheck for damage of the output
cable.NG
Repair
OK
Check the following connector:
C-126NG
Repair
OK
Check and repair the harness between
the EGR control solenoid valve and
engine-ECU.
DCheck for disconnection and
short-circuit of the output cable.
OK
Measure at the C-126 engine-ECU
connector.
DDisconnect the connector to
measure at the harness side
DIgnition switch: ON
DVoltage between terminal No. 6 and
earth
OK:System voltageNGCheck the following connectors:
B-14, C-126NG
Repair
OK
Check and repair the harness between
the EGR control solenoid valve and
engine control relay.
DCheck for disconnection and
short-circuit of the power cable.
OK
Measure at the B-112 EGR control
solenoid valve connector.
DDisconnect the connector to
measure at the harness side.
DIgnition switch: ON
DVoltage between terminal No. 1 and
earth
OK:System voltageNGCheck the following connectors:
B-11X, B-14NG
Repair
OK
Measure at the B-112 EGR control so-
lenoid valve connector.
DDisconnect the connector to
measure at the solenoid valve side.
DResistance between terminal No. 1
and terminal No. 2
OK:29 - 35Ω(at 20_C)NGReplace the EGR control solenoid
valve.
NG
Check the following connector:
B-112NG
Repair
MUT-IIActuator test
DNo.10: EGR control solenoid valve
OK:Operation sound is heard,
and there is vibration.OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)

MPI -Troubleshooting13A-40
NG
Replace the engine-ECU.
OK
MUT-IIActuator test
DNo. 10: EGR control solenoid valve
OK:Operation sound is heard,
and there is vibration.OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
Check the harness between the EGR
control solenoid valve and engine
control relay.
DCheck for damage of the power
cable.NG
Repair
From the previous page

MPI -Troubleshooting13A-41
Code No. P0443 Purge control solenoid valve systemProbable cause
Range of check
DIgnition switch: ON
DBattery voltage is 10 V or more.
Set Conditions
DThe solenoid coil surge voltage (battery voltage +2 V) is not detected when the
purge control solenoid valve is turned from ON to OFF.DMalfunction of the purge control solenoid valve
DOpen or short circuit in the purge control solenoid
valve circuit or loose connector contact.
DMalfunction of Engine-ECU
OK
To the next page
OK
Check the harness between the purge
control solenoid valve and
engine-ECU.
DCheck for damage of the output
cable.NG
Repair
OK
Check the following connector:
C-126NG
Repair
OK
Check and repair the harness between
the purge control solenoid valve and
engine-ECU.
DCheck for disconnection and
short-circuit of the output cable.
OK
Measure at the C-126 engine-ECU
connector.
DDisconnect the connector to
measure at the harness side.
DIgnition switch: ON
DVoltage between terminal No. 9 and
earth
OK:System voltageNGCheck the following connector:
C - 126NG
Repair
OK
Check and repair the harness between
the purge control solenoid valve and
engine control relay.
DCheck for disconnection and
short-circuit of the power cable.
OK
Measure at the B-23 purge control
solenoid valve connector.
DDisconnect the connector to
measure at the harness side.
DIgnition switch: ON
DVoltage between terminal No. 2 and
earth
OK:System voltageNGCheck the following connector:
B-11X
OK
Measure at the B-23 purge control so-
lenoid valve connector.
DDisconnect the connector to
measure at the solenoid valve side.
DResistance between terminal No. 1
and terminal No. 2
OK:30 - 34Ω(at 20_C)NGReplace the purge control solenoid
valve.
NG
Check the following connector:
B-23NG
Repair
MUT-IIActuator test
DNo.08: Purge control solenoid
valve
OK:Operation sound is heard,
and there is vibration.OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)

MPI -Troubleshooting13A-42
NG
Replace the engine-ECU.
OK
MUT-IIActuator test
DNo. 08: Purge control solenoid
valve
OK:Operation sound is heard,
and there is vibration.OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
Check the harness between the purge
control solenoid valve and engine
control relay.
DCheck for damage of the power
cable.NG
Repair
From the previous page

MPI -Troubleshooting13A-47
Code No. P1104 Waste gate solenoid valve systemProbable cause
Inspection Range
DBattery voltage is more than 10 V.
Evaluation Conditions
DSolenoid coil’s surge voltage (battery voltage +2 V) is not detected when the
waste gate solenoid valve turned from ON to OFF.DWaste gate solenoid valve malfunction
DEngine-ECU malfunction
OK
NG
Replace the engine-ECU.
OKIntermittent malfunction (Refer to
GROUP 00 - Points to Note for
Intermittent Malfunctions.)MUT-IIActuator Test
DNo. 12: Waste gate solenoid
valve
OK:Operation sound is heard,
and there is vibration.OKNG
Repair
OK
NG
Intermittent malfunction (Refer to
GROUP 00 - Points to Note for
Intermittent Malfunctions.)
OK
Check the following connector:B-36
MUT-IIActuator Test
DNo. 12: Waste gate solenoid valve
OK:Operation sound is heard,
and there is vibration.
NG
Repair
NGNG
Repair
OK
Check the harness between the
waste gate solenoid valve and
engine-ECU.
DCheck for disconnection and
short-circuit of the output cable.
Check the following connector:C-39
OK
Check the following connector:C-126
Measure at the C-126 engine-ECU
connector.
DDisconnect the connector to
measure at the harness side.
DIgnition switch: ON
DVoltage between terminal No. 11
and earth
OK:System voltageNG
Replace the waste gate solenoid
valve.Measure at the B-36 waste gate
solenoid valve connector.
DDisconnect the connector to
measure at the solenoid valve
side.
DResistance between terminal No.
1 and terminal No. 2
OK:29 - 35Ω(at 20_C)
OK
NG
Measure at the B-36 waste gate
solenoid valve connector.
DDisconnect the connector to
measure at the harness side.
DIgnition switch: ON
DVoltage between terminal No. 1
and earth
OK:System voltage
OKNG
Repair
OK
OK
Check and repair the harness between
the waste gate solenoid valve and
engine control relay.
DCheck for disconnection and
short-circuit of the power cable.
Check the following connector:
B-11X
NG
RepairCheck the harness between the
waste gate solenoid valve and
engine control relay.
DCheck for damage of the power
cable.NG
Repair
OK
Check the harness between the
waste gate solenoid valve and
engine-ECU.
DCheck for damage of the output
cable.