engine valve MITSUBISHI LANCER EVOLUTION 2007 Service Manual PDF

MPI -Troubleshooting13A-62
NG
Check for the entry of foreign matter (water, kerosene, etc.) in fuel.
Check the trouble symptoms.OK
End
NG
Replace the engine-ECU.
Check the trouble symptoms.OK
End
OK
Replace the injectors for all cylinders.
Check the harness and connector between each cylinder’s injector
and engine-ECU for disconnection, short-circuit or damage.NG
Repair
OK
Check the fuel pressure. (Refer to P.13A-128.)
OK
Check the EGR valve for sticking.
(Refer to GROUP 17 - Exhaust Gas Purifier Check.)NGReplace the EGR valve.
OK
Check the compression pressure.
(Refer to GROUP 11 - Engine Adjustment.)NG
Repair
OK
Check the harness and connectors between the ignition coil and
body earth and between the engine-ECU and ignition coil for
disconnection, short-circuit or damage.NG
Repair
OK
Check the ignition coil parts.
(Refer to GROUP 16 - Ignition Device.)NGReplace the ignition coil.
OK
Check the following connectors:B-103, B-119NG
Repair
OK
Check the spark plug. (Refer to GROUP 16 - Ignition Device.)NGReplace the spark plug.
OK
Check the spark plug cable.
(Refer to GROUP 16 - Ignition Device.)NGReplace the spark plug cable.
From the previous page

MPI -Troubleshooting13A-63
Inspection Procedure 8
Unstable idling (Rough idling, hunting), inappropriate
idling speed (High or low idling speed), engine stalls (Die
out) during idling
Probable cause
Causes shown on right are suspected.DIdle speed control system malfunction
DAir/fuel ratio control system malfunction
DIgnition system malfunction
DFuel system malfunction
DIntake and exhaust system malfunction
DExhaust gas purifier system malfunction
DThrottle valve malfunction
DTiming belt malfunction
DImproper compression pressure
DEngine-ECU malfunction
OK
To the next page
OK
MUT-IIData list
DNo. 11: Oxygen sensor (front) (Refer to P.13A-102.)NGCheck the Code No. P0130: Oxygen sensor (front) system.
(Refer to P.13A-24.)
OK
Check the throttle body (throttle valve section) for contamination.NGClean the throttle body (throttle valve section).
(Refer to P.13A-126.)
OK
Check the air intake from the intake hose and intake manifold.NG
Repair
OK
Check the timing marks on the timing belt.NGAlign the timing marks on the timing belt.
OK
MUT-IIData list
DNo. 27: Power steering fluid pressure switch
(Refer to P.13A-103.)NGCheck the Power steering fluid pressure switch system. (Refer to
P.13A-51, PROCEDURE FOR DAIGNOSIS CODE P0551)
OK
MUT-IIData list
DNo. 45: Idle speed control servo position (Refer to P.13A-105.)NGCheck the Idle speed control servo (stepper motor) system. (Refer
to P.13A - 49 PROCEDURE FOR DIAGNOSIS CODE P0505)
NO
MUT-IIData list
DNo. 12: Air flow sensor
DNo. 13: Intake air temperature sensor
DNo. 14: Throttle position sensor
DNo. 21: Engine coolant temperature sensor
DNo. 25: Barometric pressure sensor
(Refer to P.13A-102.)

Proceed to OK if all service data values are correct.
Proceed to NG if there is even one abnormal service data value.NGRefer to inspections for diagnosis code of sensor showing abnormal
service data. (Refer to P.13A-12.)
NO
MUT-IISelf-Diag code
DIs a diagnosis code output?YESINSPECTION CHART FOR DIAGNOSIS CODE
(Refer to P.13A-12.)
Has the battery terminal been disconnected recently?YESAfter warming up the engine, idle for approximately 10 minutes.

MPI -Troubleshooting13A-65
NG
Check for the entry of foreign matter (water, kerosene, etc.) in fuel.
Check the trouble symptoms.OK
End
NG
Replace the engine-ECU.
Check the trouble symptoms.OK
End
OK
Replace the injector for each cylinder.
OK
Check the harness and connector between each cylinder’s injector
and engine-ECU for disconnection, short-circuit or damage.NG
Repair
OK
Check the fuel pressure. (Refer to P.13A-118.)
OK
Check the EGR valve for sticking.
(Refer to GROUP 17 - Exhaust Gas Purifier Check.)NGReplace the EGR valve.
OK
Check the EGR control solenoid valve.
(Refer to GROUP 17 - Exhaust Gas Purifier Check.)NGReplace the EGR control solenoid valve.
OK
Check the purge control solenoid valve.
(Refer to GROUP 17 - Exhaust Gas Purifier Check.)NGReplace the purge control solenoid valve.
OK
Check the compression pressure.
(Refer to GROUP 11 - Engine Adjustment.)NG
Repair
OK
Check the harness and connector between each cylinder’s ignition
coil and body earth and between engine-ECU and ignition coil for
disconnection, short-circuit or damage.NG
Repair
OK
Check the ignition coil parts.
(Refer to GROUP 16 - Ignition Device.)NGReplace the ignition coil.
OK
Check the following connectors:B-114, B-119NG
Repair
OK
Check the spark plug. (Refer to GROUP 16 - Ignition Device.)NGReplace the spark plug.
OK
Check the spark plug cable.
(Refer to GROUP 16 - Ignition Device.)NGReplace the spark plug cable.
From the previous page

MPI -Troubleshooting13A-66
Inspection Procedure 9
Engine stalls when starting travel. (Pass out)
Probable cause
Causes shown on right are suspected.DIgnition system malfunction
DIntake system malfunction
DExhaust gas purifier system malfunction
DThrottle body malfunction
DEngine-ECU malfunction
NG
Replace the engine-ECU.
OK
Check the trouble symptoms.OK
End
OK
Check the throttle body (throttle valve section) for contamination.NGClean the throttle body (throttle valve section).
(Refer to P.13A-126.)
OK
Check the air intake from the intake hose and intake manifold.NG
Repair
OK
Check the harness and connector between each cylinder’s ignition
coil and body earth and between engine-ECU and ignition coil for
disconnection, short-circuit or damage.NG
Repair
OK
Check the ignition coil parts.
(Refer to GROUP 16 - Ignition Device.)NGReplace the ignition coil.
OK
Check the following connectors:B-114, B-119NG
Repair
OK
Check the spark plug. (Refer to GROUP 16 - Ignition Device.)NGReplace the spark plug.
OK
Check the spark plug cable.
(Refer to GROUP 16 - Ignition Device.)NGReplace the spark plug cable.
OK
Check the EGR valve for sticking.
(Refer to GROUP 17 - Exhaust Gas Purifier Check.)NGReplace the EGR valve.
NO
Check the EGR control solenoid valve.
(Refer to GROUP 17 - Exhaust Gas Purifier Check.)NGReplace the EGR control solenoid valve.
NO
MUT-IISelf-Diag code
DIs a diagnosis code output?YESINSPECTION CHART FOR DIAGNOSIS CODE
(Refer to P.13A-12.)
Has the battery terminal been disconnected recently?YESAfter warming up the engine, idle for approximately 10 minutes.

MPI -Troubleshooting13A-67
Inspection Procedure 10
Engine stalls during deceleration
Probable cause
Causes shown on right are suspected.DIdle speed control system malfunction
DExhaust gas purifier system malfunction
DThrottle valve malfunction
DEngine-ECU malfunction
NG
Replace the engine-ECU.
OK
Check the trouble symptoms.OK
End
OK
Check the EGR valve for sticking.
(Refer to GROUP 17 - Exhaust Gas Purifier Check.)NGReplace the EGR valve.
OK
Check the EGR control solenoid valve.
(Refer to GROUP 17 - Exhaust Gas Purifier Check.)NGReplace the EGR control solenoid valve.
NO
Check the throttle body (throttle valve section) for contamination.NGClean the throttle body (throttle valve section).
(Refer to P.13A-126.)
OK
MUT-IIData list
DNo. 45: Idle speed control (servo) position
DDoes the idle speed control (servo) position drop to 0 to 2
steps during deceleration (engine rotation speed 1000 r/min or
more)?YESCheck the Code No. P0500: Vehicle speed sensor system.
(Refer to P.13A-43.)
NO
MUT-IIData list
DNo. 14: Throttle position sensor (Refer to P.13A-103.)NGCheck the Code No. P0120: Throttle position sensor system.
(Refer to P.13A-21.)
NO
MUT-IISelf-Diag code
DIs a diagnosis code output?YESINSPECTION CHART FOR DIAGNOSIS CODE
(Refer to P.13A-12.)
Has the battery terminal been disconnected recently?YESAfter warming up the engine, idle for approximately 10 minutes.

MPI -Troubleshooting13A-68
Inspection Procedure 11
Pulsation (Hesitation, sag), poor acceleration, stumbling,
surging
Probable cause
Causes shown on right are suspected.DAir/fuel ratio control system malfunction
DIgnition system malfunction
DFuel system malfunction
DIntake and exhaust system malfunction
DExhaust gas purifier system malfunction
DImproper compression pressure
DTurbocharger system malfunction
OK
To the next page
OK
MUT-IIData list
DNo. 59: Oxygen sensor (rear) (Refer to P.13A-105.)
NGCheck the Code No. P0136: Oxygen sensor (rear) system.
(Refer to P.13A-27.)
OK
MUT-IIData list
DNo. 11: Oxygen sensor (front) (Refer to P.13A-102.)NGCheck the Code No. P0130: Oxygen sensor (front) system.
(Refer to P.13A-24.)
OK
Check the EGR valve for sticking.
(Refer to GROUP 17 - Exhaust Gas Purifier Check.)NGReplace the EGR valve.
OK
Check the EGR control solenoid valve.
(Refer to GROUP 17 - Exhaust Gas Purifier Check.)NGReplace the EGR control solenoid valve.
OK
Check the purge control solenoid valve.
(Refer to GROUP 17 - Exhaust Gas Purifier Check.)NGReplace the purge control solenoid valve.
OK
MUT-IIData list
DNo. 13: Intake air temperature sensor
DNo. 14: Throttle position sensor
DNo. 21: Engine coolant temperature sensor
DNo. 25: Barometric pressure sensor
(Refer to P.13A-102.)

Proceed to OK if all service data values are correct.
Proceed to NG if there is even one abnormal service data value.NGRefer to inspections for diagnosis code of sensor showing
abnormal service data. (Refer to P.13A-12.)
OK
Check the injector operation sound. (Use sound scope.)NGCheck the Code No. P0201 - 204: Injector system for faulty
cylinder.
NO
Check the ignition timing.
(Refer to GROUP 11 - Engine Adjustment.)NGCheck mounting state of crank angle sensor and timing belt cover.
MUT-IISelf-Diag code
DIs a diagnosis code output?YESINSPECTION CHART FOR DIAGNOSIS CODE
(Refer to P.13A-12.)

MPI -Troubleshooting13A-69
NG
Check and repair the intake hose and manifold damage and air
intake.
OK
Check the trouble symptoms.OK
End
NG
Check the compression pressure.
(Refer to GROUP 11 - Engine Adjustment.)NG
Repair
OK
Check the trouble symptoms.OK
End
OK
Check the fuel pressure. (Refer to P.13A-128.)NG
Repair
OK
MUT-IIActuator test
DNo. 09: Fuel pressure control solenoid valve
(Refer to P.13A-107.)NGCheck the Fuel pressure control solenoid valve system.
(Refer to P.13A-12, INSPECTION PROCEDURE FOR
DIAGNOSIS CODE No. P1105)
OK
Check the supercharging pressure control system.
(Refer to GROUP 15 - Intake Exhaust, On-vehicle Service.)NG
Repair
OK
Check the turbocharger supercharging pressure.
(Refer to GROUP 15 - Intake Exhaust, On-vehicle Service.)NG
Repair
OK
MUT-IIActuator test
DNo. 12: Waste gate solenoid valve (Refer to P.13A-107.)NGCheck the waste gate solenoid valve system.
(Refer to P.13A-12, INSPECTION PROCEDURE FOR
DIAGNOSIS CODE No. P1104)
OK
Check the harness and connector between each cylinder’s ignition
coil and body earth and between engine-ECU and ignition coil for
disconnection, short-circuit or damage.NG
Repair
OK
Check the ignition coil parts.
(Refer to GROUP 16 - Ignition Device.)NGReplace the ignition coil.
OK
Check the following connectors:B-123, B-119NG
Repair
OK
Check the spark plug. (Refer to GROUP 16 - Ignition Device.)NGReplace the spark plug.
OK
Check the spark plug cable.
(Refer to GROUP 16 - Ignition Device.)NGReplace the spark plug cable.
From the previous page

MPI -Troubleshooting13A-76
NG
Replace the engine-ECU.
Check the trouble symptoms.OK
End
NG
Replace the catalyst.
Check the trouble symptoms.OK
End
OK
Replace the injectors for all cylinders.
OK
Check the compression pressure.
(Refer to GROUP 11 - Engine Adjustment.)NG
Repair
OK
Check the ignition coil parts.
(Refer to GROUP 16 - Ignition Device.)NGReplace the ignition coil.
OK
Check the spark plug. (Refer to GROUP 16 - Ignition Device.)NGReplace the spark plug.
OK
Check the spark plug cable.
(Refer to GROUP 16 - Ignition Device.)NGReplace the spark plug cable.
OK
Check the PCV valve.
(Refer to GROUP 17 - Exhaust Gas Purifier Check.)NGReplace the PCV valve.
OK
Check the EGR valve for sticking.
(Refer to GROUP 17 - Exhaust Gas Purifier Check.)NGReplace the EGR valve.
OK
Check the EGR control solenoid valve.
(Refer to GROUP 17 - Exhaust Gas Purifier Check.)NGReplace the EGR control solenoid valve.
OK
Check the purge control solenoid valve.
(Refer to GROUP 17 - Exhaust Gas Purifier Check.)NGReplace the purge control solenoid valve.
From the previous page

MPI -Troubleshooting13A-95
Inspection Procedure 28
A/C load signal system
Probable cause
The size of the A/C compressor load is detected according to the difference in
set temperature. When the A/C large load signal is input to the engine-ECU, the
engine-ECU judges that the A/C compressor load is large, and controls the
throttle valve control servo so that the idling speed increases.DA/C-ECU malfunction
DEngine-ECU malfunction
OK
NG
OK
NG
Check the trouble symptoms.NG
Check the following connector:C-126Repair
OK
Check the following connector:C-126
Replace the engine - ECU.
Measure at the C-126 engine-ECU
connector.
DMeasure the engine-ECU terminal
voltage.
DEngine: Idling
DA/C switch: ON
(A/C compressor driven state)
DVoltage between terminal No. 24
and earth
DA/C setting temperature: Minimum
temperature
Air volume: Maximum
Outdoor air sensor ambient
temperature: 18_C or more
OK:1 V or less
DA/C setting temperature: indoor
temperature
Air volume: Minimum
OK:System voltage
NG
Repair
NGNG
Repair
OK
OK
Check the harness between the
engine-ECU and A/C-ECU.
DCheck for short-circuit of the
output cable.NG
Repair
Check the A/C system.
(Refer to GROUP 55 -
Troubleshooting.)OK
Intermittent malfunction (Refer to
GROUP 00 - Points to Note for
Intermittent Malfunctions.)
Check the following connectors:
C-16 ,
C-18 , C-20
NG
Repair OK
OK
Check and repair the harness
between the engine-ECU and
A/C-ECU.
DCheck for disconnection of the
output cable.
Check the following connectors:
C-32 ,
C-30 , C-128 drive vehicles>, C-130 vehicles>
Measure at the C-32 A/C-ECU
connector or C-30
A/C-ECU connector A/C>.
DMeasure the A/C-ECU terminal
voltage.
DEngine: Idling
DA/C setting temperature: Minimum
temperature
When room temperature is 25_
or more: Max Cool
When room temperature is 25_
or less: Max. Hot
DA/C switch: ON
DVoltage between terminal No. 2
and earth drive vehicles)>
DVoltage between terminal No. 5
and earth drive vehicles)>
DVoltage between terminal No. 32
and earth
OK:System voltage

MPI -Troubleshooting13A-96
Inspection Procedure 29
Secondary air control solenoid valve system
Probable cause
The secondary air control solenoid valve switches the pressure led into the
secondary air valve between the intake manifold and the atmospheric pressure.DSecondary air control 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. 36: Secondary air control
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-142
MUT-IIActuator Test
DNo. 36: Secondary air control
solenoid valve
OK:Operation sound is heard,
and there is vibration.
NG
Repair
NGNG
Repair
OK
Check and repair the harness
between the secondary air control
solenoid valve and engine-ECU.
DCheck for disconnection and
short-circuit of the output cable.
Check the following connectors:
B-14, B-11X
OK
Check the following connector:C-118
Measure at the C-118 engine-ECU
connector.
DDisconnect the connector to
measure at the haness side.
DIgnition switch: ON
DVoltage between terminal No. 53
and earth
OK:System voltageNG
Replace the secondary air control
solenoid valve.Measure at the B-142 secondary air
control 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-142 secondary air
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 voltage
OKNG
Repair
OK
OK
Check and repair the harness between
the secondary air control solenoid
valve and engine control relay.
DCheck for disconnection and
short-circuit of the power cable.
Check the following connectors:
B-14, B-11X
NG
RepairCheck the harness between the
secondary air control solenoid valve
and engine control relay.
DCheck for damage of the power
cable.NG
Repair
OK
Check the harness between the
secondary air control solenoid valve
and engine-ECU.
DCheck for damage of the output
cable.