2007 MITSUBISHI LANCER EVOLUTION engine

MPI -Troubleshooting13A-98
OK
NG
OK
Check the harness between the
intercooler water spray relay and
ignition switch.
DCheck for damage of the power
cable.Repair
OK
OK
Check the following connector:C-135NG
Repair
NG
NG
OK
Measure at the C-118 engine-ECU
connector.
DDisconnect the connector to
measure at the harness side.
DVoltage between terminal No. 55
and earth
(Ignition switch: ON)
OK:System voltageOKCheck the following connectors:
C-130, C-208, C-222NG
NG
OK
Measure at the C-222 intercooler water
spray relay connector.
DDisconnect the connector to
measure at the harness side.
DVoltage between terminal No. 3,
terminal No. 1 and earth
(Ignition switch: ON)
OK:System voltage
Form the previous page
OKRepair
Check the harness between the
intercooler water spray relay and
intercooler water spray motor.
DCheck for disconnection,
short-circuit and damage of the
power cable.
Check the following connectors:
C-209, C-210, C-201, C-208, C-102
NG
Repair
Replace the engine-ECU.
OK
Check the following connectors:
C-209, C-210, C-201, C-208, C-102
NG
Repair
OK
Check and repair the harness
between the intercooler water spray
relay and engine-ECU.
DCheck for disconnection and
short-circuit of the signal cable.
OK
Check the ignition switch. (Refer to
GROUP 54.)
Check the harness between the
intercooler water spray relay and
ignition switch.
DCheck for disconnection and
short-circuit of the power cable.
Repair
NG
OK
Check the harness between the
intercooler water spray motor and
earth.
DCheck for disconnection and
damage of the earth cable.Repair
OK
Check the following connectors:
C-118, C-130NG
Repair
NG
OK
Check and repair the harness between
the intercooler water spray relay and
engine-ECU.
DCheck for damage of the signal
cable.Repair
OK
Check the following connector:A-44NG
Repair
OK
Check the intercooler water spray
motor. (Refer to GROUP 15 - Intake
and Exhaust.)Repair NG

MPI -Troubleshooting13A-99
Inspection Procedure 31
Intercooler water spray lamp system
Probable cause
The engine-ECU illuminates the intercooler water spray lamp when the
intercooler water spray switch (automatic) is ON.DIntercooler water spray lamp bulb dead
DIgnition switch malfunction
DIntercooler water spray lamp circuit disconnection,
short-circuit, or connector contact defect
DIntercooler water spray switch circuit disconnection,
short-circuit, or connector contact defect
DEngine-ECU malfunction
OK
Check and repair the harness
between the combination meter and
engine-ECU.
DCheck for damage of the signal
cable.
NG
OK
Replace the intercooler water spray
lamp.Check whether intercooler water
spray lamp bulb is dead. (Refer to
GROUP 54 - combination meter.)
NGNG
Repair
OK
Check and repair the harness
between the combination meter and
engine-ECU.
DCheck for disconnection and
short-circuit of the signal cable.
Check the following connector:
C-02, C-130
OKMeasure at the C-122 engine-ECU
connector.
DDisconnect the connector to
measure at the harness side.
DIgnition switch: ON
DVoltage between terminal No. 35
and earth
OK:System voltageOK
Check the Inspection Procedure 30:
Intercooler water spray circuit
system. (Refer to P.13A-97.)Check the intercooler water spray
lamp illumination.
DDisconnect the C-122
engine-ECU connector, and earth
the terminal No. 35.
DIgnition switch: ON
OK:The intercooler water spray
lamp illuminates.
NG
NG
Measure at the C-01 combination
meter connector.
DDisconnect the connector to
measure at the harness side.
DIgnition switch: ON
DVoltage between terminal No. 9
and earth
OK:System voltage
OKNG
Repair
OK
Check the following connectors:
C-213, C-210, C-201, C-29 vehicle>
NG
RepairCheck the harness between the
combination meter and ignition
switch.
DCheck for damage of the power
cable.
OK
Check the harness between the
combination meter and ignition
switch.
DCheck for disconnection and
short-circuit of the power cable.Repair
Replace the ignition switch.
OK
Check the following connectors:
C-213, C-210, C-201, C-01, C-29
NG
Repair
OK
Check the following connectors:
C-02, C-122, C-130NG
RepairNG

MPI -Troubleshooting13A-100
Inspection Procedure 32
Ignition coil (integrated power transistor) system
Probable cause
The engine-ECU allows the ignition coil primary current to flow intermittently by
turning the power transistor in the unit OFF and ON.DIgnition coil malfunction
DSpark plug malfunction
DSpark plug cable malfunction
DIgnition primary circuit disconnection, short-circuit, or
connector contact defect
DEngine-ECU malfunction
OK
Check and repair the harness between
the ignition coil and engine-ECU.
DCheck for disconnection of the
output cable.
OK
To the next page
(3) NGCheck and repair the harness between
the ignition coil and body earth.
DCheck for disconnection and
damage of the earth cable.
NG
Replace the engine-ECU.
OK
Check the trouble symptoms.OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.) NG
OK
Check the harness between the
ignition coil and engine-ECU.
DCheck for disconnection of the
output cable.Repair NG
NG
Check the following connector:
C-126Repair
(2) NGMeasure at the C-126 engine-ECU
connector.
DMeasure the engine-ECU terminal
voltage.
DDisconnect the connectors B-114
and B-119.
DEngine: Cranking
(1) Voltage between terminal No. 10,
terminal No. 23 and earthOKCheck the following connector:
C-126
OK
Check and repair the harness between
the ignition coil and ignition coil relay.
DCheck for short-circuit of the power
cable.
OK
Check the ignition coil relay.
(Refer to GROUP 16 - Engine
Electrical.)
OK
Measure at the B-119 and B-123
ignition coil connectors.
DDisconnect the connector to
measure at the harness side.
(1) Voltage between terminal No. 1 and
earth
(Ignition switch: ON)
OK:System voltage
(2) Voltage between terminal No. 3 and
earth
(Engine: Cranking)
OK:0.5 - 4.0 V
(3) Resistance between terminal No. 2
and earth
OK:2Ωor less(1) NGCheck the following connector:
B-09XNG
Repair
OK
Check the ignition coil.
(Refer to GROUP 16 - Ignition Device.)OKReplace 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.
Check the spark plug cable.
(Refer to GROUP 16 - Ignition Device.)NGReplace the spark plug cable.
NG
Repair

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%--