2007 MITSUBISHI LANCER EVOLUTION ECU

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-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-70
Inspection Procedure 12
Shock during acceleration
Probable cause
The occurrence of ignition leaks, etc., due to the rise in voltage required for the spark
plugs during acceleration is a probable cause.DIgnition system malfunction
OK
Check and repair the harness and connector between each
cylinder’s ignition coil and body earth and between the engine-
ECU and ignition coil for disconnection, short-circuit and damage.
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.
NO
Check the spark plug cable.
(Refer to GROUP 16 - Ignition Device.)NGReplace the spark plug cable.
MUT-IISelf-Diag code
DIs a diagnosis code output?YESINSPECTION CHART FOR DIAGNOSIS CODE
(Refer to P.13A-12.)

MPI -Troubleshooting13A-72
Inspection Procedure 14
Knocking
Probable cause
Causes shown on right are suspected.DDetonation sensor malfunction
DKnocking control system malfunction
DSpark plug malfunction
DIgnition system malfunction
DEngine-ECU malfunction
OK
Check the Code No. P0325: Detonation sensor system.
(Refer to P.13A-34.)
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.
NO
Check the spark plug cable.
(Refer to GROUP 16 - Ignition Device.)NGReplace the spark plug cable.
MUT-IISelf-Diag code
DIs a diagnosis code output?YESINSPECTION CHART FOR DIAGNOSIS CODE
(Refer to P.13A-12.)

MPI -Troubleshooting13A-73
Inspection Procedure 15
Deviation of ignition interval
Probable cause
Causes shown on right are suspected.DCrank angle sensor malfunction
DCamshaft position sensor malfunction
DTiming belt malfunction
DEngine-ECU malfunction
NG
Replace the engine-ECU.
Check the trouble symptoms.OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note for Intermittent
Malfunctions.
NG
Replace the camshaft position sensor.
Check the trouble symptoms.OK
End
OK
Replace the crank angle sensor.
NG
Replace the engine-ECU.
OK
Check the camshaft position sensing cylinder.NGReplace the camshaft position sensing cylinder.
OK
Check the crank angle sensor vane.NGReplace the crank angle sensor vane.
OK
Check the timing marks on the timing belt.NGAlign the timing marks on the timing belt.
NG
Check the mounting state of the crank angle sensor and camshaft
position sensor.NG
Repair
NO
Measure the crank angle sensor and
camshaft position sensor output
waveform. (Using an analyzer.)
DEngine: Idling

DMeasure the output waveform at
B-121 crank angle sensor
connector.
DConnect to connector with the test
harness (MD998478), and
measure at the pickup harness
section.
DVoltage between terminal No. 2 and
earth

DMeasure the output waveform at
B-116 camshaft position sensor
connector.
DConnect to connector with the test
harness (MB991709), and measure
at the pickup harness section.
DVoltage between terminal No. 2 and
earth
OK:The output waveform timing
for both sensors is the same
as P.13A-118 (Oscilloscope
Inspection Procedures.)OKCheck the trouble symptoms.OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
MUT-IISelf-Diag code
DIs a diagnosis code output?YESINSPECTION CHART FOR DIAGNOSIS CODE
(Refer to P.13A-12.)

MPI -Troubleshooting13A-74
Inspection Procedure 16
Run on (Dieseling)
Probable cause
Causes shown on right are suspected.DInjector malfunction
DEngine-ECU malfunction
NG
Replace the engine-ECU.
Check the trouble symptoms.OK
End
Replace the injectors for all cylinders.

MPI -Troubleshooting13A-75
Inspection Procedure 17
Abnormal odor, white smoke, black smoke, high CO or HC
concentration when idling
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
DCatalyst defect
DEngine-ECU malfunction
OK
To the next page
OK
Check the fuel pressure. (Refer to P.13A-128.)
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 for exhaust gas leaks from exhaust manifold.NG
Repair
OK
Check the air intake from the intake hose and intake manifold.NG
Repair
OK
MUT-IIData list
DNo. 12: Air flow sensor
DNo. 13: Intake air temperature sensor
DNo. 21: Engien 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-102.)
OK
Check the ignition timing.
(Refer to GROUP 11 - Engine Adjustment.)NGCheck the Inspection Procedure 15: Deviation of ignition interval
(Refer to P.13A-73.)
NO
MUT-IIActuator test
DNo. 01: No. 1 injector
DNo. 02: No. 2 injector
DNo. 03: No. 3 injector
DNo. 04: No. 4 injector
OK:The idling state changes.
DProceed to NG if the cylinder (NG cylinder) for which the idling
state did not change when injector was stopped is pinpointed.
DProceed to OK if all cylinders are OK, or if the NG cylinder
cannot be pinpointed.NGCheck the Code No. P0201: No. 1 injector system, P0202: No. 2
injector system, P0203: No. 3 injector system and P0204: No. 4
injector system. (Refer to P.13A-30, 31, 32, 33.)
MUT-IISelf-Diag code
DIs a diagnosis code output?YESINSPECTION CHART FOR DIAGNOSIS CODE
(Refer to P.13A-12.)