2007 MITSUBISHI LANCER EVOLUTION Service Repair Manual

MPI -Troubleshooting13A-101
NG
Replace the engine-ECU.
Check the trouble symptoms.OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
Check the harness between the
ignition coil and engine-ECU.
DCheck for damage of the output
cable.NG
Repair
OK
Check the harness between the
ignition coil and ignition coil relay.
DCheck for damage of the power
cable.NG
Repair
From the previous page

MPI -Troubleshooting13A-102
DATA LIST REFERENCE TABLE
NOTE
*1. In a new Vehicle [driven approximately 500 km or less], the air flow sensor output frequency time
is sometimes 10% longer than the standard time.
*2. The injector drive time represents the time when the cranking speed is at 250 r/min or below when
the power supply voltage is 11 V.
*3. In a new vehicle [driven approximately 500 km or less], the injector drive time is sometimes 10%
longer than the standard time.
*4. In a new vehicle [driven approximately 500 km or less], the step of the stepper motor is sometimes
30 steps greater than the standard value.
Item
No.Inspection
itemInspection contentsNormal conditionInspection
procedure
No.Reference
page
11Oxygen
sensor
(front)Engine: After having
warmed up
(Air/fuel mixuture is
made leaner whenWhen at 4,000 r/min,
engine is suddenly de-
celerated200 mV or lessCode No.
P013013A-24
madeleanerwhen
decelerating, and is
made richer when rac-
ing.)When engine is sud-
denly raced600 - 1,000 mV
Engine: After having
warmed up
(The oxygen sensor
(front) signal is used
tochecktheair/fuel
Engine is idling400 mV or less↔
600 - 1,000 mV
(Varies)
to check the air/fuel
mixture ratio, and
control condition is
also checked by the
engine-ECU.)2,500 r/min
12Air flow
sensor*1DEngine coolant
temperature:
Idle operation17 - 43 Hz--
sensor*1temperature:
80 - 95_C
DLightningandall
2,500 r/min40 - 100 Hz
DLightning andall
accessories:
OFF
DTransmission:
NeutralAccelerationAccording to ac-
celeration, fre-
quency is ampli-
fied.
13Intake air
temperature
sensor
Ignition switch: “ON”
or engine runningWhen intake air temper-
ature is - 20_C-20_CCode No.
P011013A-13
sensorWhen intake air tem-
perature is 0_C0_C
When intake air tem-
perature is 20_C20_C
When intake air tem-
perature is 40_C40_C
When intake air tem-
perature is 80_C80_C

MPI -Troubleshooting13A-103
Item
No.Reference
page Inspection
procedure
No. Normal condition Inspection contents Inspection
item
14Throttle
position
Ignition switch: “ON”Set to idle position535 - 735 mVCode No.
P0120
13A-21
position
sensor
Gradually openIncreases in pro-
portion to throttle
opening angle
P0120
Open fully4,500 - 5,000 mV
16Battery
voltageIgnition switch: “ON”System voltageProcedure
No. 2213A-82
18Cranking
signalIgnition switch: “ON”Engine: StoppedOFFProcedure
No.2213A-82
signal
(ignition
switch-ST)Engine: CrankingON
No.22
21Engine
coolant
temperature
Ignition switch: “ON”
or engine runningWhen engine coolant
temperature is - 20_C-20_CCode No.
P011513A-19
temperature
sensorWhen engine coolant
temperature is 0_C0_C
When engine coolant
temperature is 20_C20_C
When engine coolant
temperature is 40_C40_C
When engine coolant
temperature is 80_C80_C
22Crank
angle
sensorDEngine: Cranking
DTachometer:
ConnectedCompare the engine
speed readings on the
tachometer and the
MUT-II.Accord--
DEngine: Idle
operationWhen engine coolant
temperature is - 20_C1,300 - 1,500
r/min
When engine coolant
temperature is 0_C1,300 - 1,500
r/min
When engine coolant
temperature is 20_C1,300 - 1,500
r/min
When engine coolant
temperature is 40_C1,150 - 1,350
r/min
When engine coolant
temperature is 80_C600 - 900 r/min
24LVehicle
speed
sensorDrive at 40 km/hApproximately 40
km/hCode No.
P050013A-43

MPI -Troubleshooting13A-104
Item
No.Reference
page Inspection
procedure
No. Normal condition Inspection contents Inspection
item
25Barometric
pressure
Ignition switch: ONAltitude: 0 m101 kPaCode No.
P0105
13A-15
pressure
sensor
Altitude: 0 m95 kPa
P0105
Altitude: 0 m88 kPa
Altitude: 0 m81 kPa
27Power
steering
fluidEngine: Idle operationSteering wheel
stationaryOFFCode No.
P055113A-46
fluid
pressure
switchSteering wheel turningON
28A/C switchEngine: Idle operation
(When A/C switch isA/C switch: OFFOFFProcedure
No. 2613A-92
(WhenA/Cswitchis
ON, A/C compressor
should be operating.)A/C switch: ONON
No.26
34Air flow
sensorEngine: After
warm-upIdle operationONCode No.
P010013A-13
sensor
reset
signal
warm up
3,000 r/minOFF
P0100
37Volumetric
efficiency
DEngine coolant
temperature:
Idle operation15 - 35%--
efficiencytemperature:
85 - 95_C
DLightningand
2,500 r/min15 - 35%
DLightning and
accessories:
OFFExcessive
accellerationAccording to ac-
celeration, volu-
metric efficiency
is increased.
41Injectors*1Engine: CrankingWhen engine coolant
temperature is 0_C
(injection is carried out
for all cylinders simulta-
neously)25 - 37 ms--
When engine coolant
temperature is 20_C15 - 22 ms
When engine coolant
temperature is 80_C4.2 - 6.3 ms
Injectors*2DEngine coolant
temperature:
80–95_C
Engine: Idle operation1.5 - 2.7 ms--
80–95_C
DLamps, electric
cooling fan and
allaccessories:
2,500 r/min1.2 - 2.4 ms
allaccessories:
OFF
DTransmission:
Neutral
When engine is sud-
denly racedIncreases

MPI -Troubleshooting13A-105
Item
No.Reference
page Inspection
procedure
No. Normal condition Inspection contents Inspection
item
44Ignition ad-
vanceDEngine: After
having warmed
up
DTiming lamp is
set(Thetiming
Engine: Idle operation0-13_BTDC--
set.(Thetiming
lamp is set in
order to check
actual ignition
timing.)
2,500 r/min20 - 40_BTDC
45Idle speed
control
(stepper)
motor
position*
3
DEngine coolant
temperature:
80 - 90_C
DLamps, electric
cooling fan and
all accessories:
OFF
DTransmission:
A/C switch: OFF2 - 25 STEP--
DTransmission:
Neutral
DEngine: Idle
operation
DWhen A/C switch
is ON, A/C
compressor
should be operat-
ing
A/C switch: OFF→ONIncreases by 10 -
70 steps
49A/C relayEngine: After having
warmed up/Engine is
idlingA/C switch: OFFOFF (Compressor
clutch is not oper-
ating)Procedure
No. 2713A-92
A/C switch: ONON (Compressor
clutch is operat-
ing)
59Oxygen
sensor
(rear)Engine: After having
warmed-upWhen engine is sud-
denly raced0 and 600 - 1,000
mV alternate.Code No.
P013613A-27
81LLearned
valueEngine: After having warmed up, running with no
load at 2,500 r/min. (During air/fuel ratio
feedback control)- 12.5 - 12.5%--
82LFeedbackEngine: After having warmed up, running with no
load at 2,500 r/min. (During air/fuel ratio
feedback control)- 20 - 20%--
87LEngine
load
Engine: After having
warmedup
Idle operation15 - 35%--
loadwarmedup
2,500 r/min15 - 35%--

MPI -Troubleshooting13A-106
Item
No.Reference
page Inspection
procedure
No. Normal condition Inspection contents Inspection
item
A1LOxygen
sensor
(front)Engine: After having
warmed up
(Air/fuel mixture is
made leaner whenWhen at 4,000 r/min,
engine is suddenly de-
celerated200 mV or lessCode No.
P013013A-24
madeleanerwhen
decelerating, and is
made richer when
racing.)When engine is sud-
denly raced600 - 1,000 mV
Engine: After having
warmed up
(By using oxygen
sensorcheckair/fuel
Idle operation400 mV or less↔
600 - 1,000 mV
(altered)
sensor, checkair/fuel
mixture as well as
control status by
engine-ECU)2,500 r/min
A2LOxygen
sensor
(rear)Engine: After having
warmed upWhen engine is sud-
denly raced0 and 600 - 1,000
mV alternate.Code No.
P013613A-27
8ALThrottle
position
sensor
DEngine: After
having warmed
up
Release the accelera-
tor pedal.8 - 16%Code No.
P012013A-21
sensor
(Throttle
position
opening
angle)up
DIgnition switch:
“ON” (Engine
stopped)Depress the accelera-
tor pedal gradually.Increase in re-
sponse to the
pedal depression
stroke.
Depress the accelera-
tor pedal fully.80 - 100%
NOTE
Items marked byLwill not displayed if service data is selected on the check mode.

MPI -Troubleshooting13A-107
ACTUATOR TEST REFERENCE TABLE
Item
No.Inspection
itemDrive contentsInspection contentsNormal conditionInspection
procedure
No.Reference
page
01InjectorsCut fuel to No.
1 injectorEngine: After having warmed
up/Engine is idling
(C tthfllth
Idling condition
becomes different
(becomesunsta
Code No.
P020113A-30
02Cut fuel to No.
2 injector(Cut the fuel supply to each
injector in turn and check
cylinders which don’t affect
idli )
(becomes unsta-
ble).Code No.
P020213A-31
03Cut fuel to No.
3 injector
y
idling.)Code No.
P020313A-32
04Cut fuel to No.
4 injectorCode No.
P020413A-33
07Fuel pumpFuel pump
operates and
fuel is recircu-
lated.DEngine:
Cranking
DFuel
pump:
Forced
driving
Inspect
according
Pinch the
return hose
with fingers
to feel the
pulse of the
fuel being
recirculated.Pulse is felt.Procedure
No. 2313A-85
according
to both
the above
conditions.
Listen near
the fuel tank
for the
sound of
fuel pump
operation.Sound of opera-
tion is heard.
08Purge
control
solenoid
valveSolenoid valve
turns from
OFF to ON.Ignition switch: “ON”Sound of opera-
tion can be heard
when solenoid
valve is driven.Code No.
P044313A-41
09Fuel
pressure
control
solenoid
valveSolenoid valve
turns from
OFF to ON.Ignition switch: “ON”Sound of opera-
tion can be heard
when solenoid
valve is driven.Code No.
P110513A-48
10EGR con-
trol sole-
noid valveSolenoid valve
turns from
OFF to ON.Ignition switch: “ON”Sound of opera-
tion can be heard
when solenoid
valve is driven.Code No.
P040313A-39
12Waste
gate sole-
noid valveSolenoid valve
turns from
OFF to ON.Ignition switch: “ON”Sound of opera-
tion can be heard
when solenoid
valve is driven.Code No.
P110413A-47
13Fuel pump
relay 3Fuel pump
relay 3 turns
from OFF to
ON.DIgnition switch: “ON”
DListen near the fuel tank
for the sound of fuel pump
operation.Sound of opera-
tion is heard.Procedure
No. 2313A-85
17Basic igni-
tion timingSet to ignition
timing
adjustment
modeEngine: Idling
Timing light is set5_BTDC--

MPI -Troubleshooting13A-108
Item
No.Reference
page Inspection
procedure
No. Normal condition Inspection contents Drive contents Inspection
item
21Fan
controllerRadiator fan
motor is
driven.Ignition switch: “ON”Fan motor rotates
at high speed.Procedure
No. 2413A-87
36Secondary
air control
solenoid
valveSolenoid valve
turns from
OFF to ON.Ignition switch: “ON”Sound of opera-
tion can be heard
when solenoid
valve is driven.Procedure
No. 2913A-96
37Condenser
fan (HI)Condensor
fan motor is
driven.Ignition switch: “ON”Fan motor rotates
at high speed.Procedure
No. 2513A-89
38Condenser
fan (LOW)Second air
control
solenoid valveIgnition switch: “ON”Fan motor rotates
at low speed.
CHECK AT THE ENGINE-ECU TERMINALS
TERMINAL VOLTAGE CHECK CHART
1. Connect a needle-nosed wire probe (test harness:
MB991223 or paper clip) to a voltmeter probe.
2. Insert the needle-nosed wire probe into each of the
engine-ECU connector terminals from the wire side, and
measure the voltage while referring to the check chart.
NOTE
(1) Make the voltage measurement with the engine-ECU
connectors connected.
(2) You may find it convenient to pull out the engine-ECU
to make it easier to reach the connector terminals.
(3) The checks can be carried out off the order given
in the chart.
Caution
Short-circuiting the positive (+) probe between a
connector terminal and earth could damage the
vehicle wiring, the sensor, engine-ECU or all of them.
Be careful to prevent this!
3. If voltmeter shows any division from standard value, check
the corresponding sensor, actuator and related electrical
wiring, then repair or replace.
4. After repair or replacement, recheck with the voltmeter
to confirm that the repair has corrected the problem.
Needle-nosed wire probe