2007 MITSUBISHI LANCER EVOLUTION Service Repair Manual

MPI -General Information13A-5
MULTI-POINT FUEL INJECTION SYSTEM DIAGRAM
L1 Oxygen sensor (front)
L2 Oxygen sensor (rear)
L3 Air flow sensor
L4 Intake air temperature sensor
L5 Throttle position sensor
L6 Camshaft position sensor
L7 Crank angle sensor
L8 Barometric pressure sensor
L9 Engine coolant temperature sensor
L10 Detonation sensor
Engine-ECU
l1 Injector
l2 Idle speed control servo
l3 Fuel pressure control solenoid valve
l4 Waste gate solenoid valve
l5 EGR control solenoid valve
l6 Purge control solenoid valve
l7 Secondary air control solenoid valve
DPower supply
DIgnition switch IG
DIgnition switch ST
DVehicle speed sensor
DA/C switch
DA/C load signal
DTachometer
DPower steering fluid pressure switch
DAlternator FR terminal
DDiagnosis control terminal
DIntercooler water spray switch (automatic)
DIntercooler water spray switch (manual)DEngine control relay
DFuel pump relay 2, 3
DA/C relay
DIgnition coil
DFan controller
DCondenser fan relay (HI)
DCondenser fan relay (LOW)
DEngine warning lamp
DDiagnosis output
DAlternator G terminal
DIntercooler water spray relay
DIntercooler water spray lamp
L1 Oxygen
sensor
(front)
L4 Intake air
temperature
sensorL5 Throttle
position
sensor
L6 Camshaft
position sensorl1 Injector l2 Idle
speed
control
servo
l6 Purge
control
solenoid
valve
Three-way
catalytic converter Canister
Air
inletVacuum
tank
Fuel
pressure
reguratorFrom
fuel tank
To fuel tank
PCV valveFrom
fuel pump
Waste gate
actuatorL2 Oxygen sensor (rear) Check
valveBy-pass
valve
l5 EGR control
solenoid valve
l4 Waste gate
solenoid valve L8 Barometric
pressure
sensor
L3 Air flow
sensorl7 Secondary
air control
solenoid
valve
Secondary
air valvel3 Fuel pressure
control
solenoid valve
EGR
valve
L9 Engine coolant
temperature sensor
L7 Crank angle sensor
L10 Detonation sensor

MPI -Service Specifications/Sealant13A-6
SERVICE SPECIFICATIONS
ItemsSpecifications
Basic idle speed r/min850±100
Throttle position sensor adjusting voltage mV535 - 735
Throttle position sensor resistance kΩ3.5 - 6.5
Idle speed control servo coil resistance (at 20_C)Ω28 - 33
Intake air temperature sensor
resistancekΩ
-20_C13 - 17
resistance kΩ0_C5.7 - 6.7
20_C2.3 - 3.0
40_C1.0 - 1.5
60_C0.56 - 0.76
80_C0.30 - 0.42
Engine coolant temperature
sensorresistancekΩ
-20_C14 - 17
sensor resistance kΩ0_C5.1 - 6.5
20_C2.1 - 2.7
40_C0.9 - 1.3
60_C0.48 - 0.68
80_C0.26 - 0.36
Oxygen sensor heater
resistance(at20_C)Ω
Front4.5 - 8.0
resistance (at 20_C)ΩRear11 - 1 8
Oxygen sensor output voltage (at racing) V0.6 - 1.0
Fuel pressure kPaVacuum hose disconnection289 - 309 at curb idle
Vacuum hose connectionApproximately 230 at curb idle
Fuel pressure control solenoid valve resistance (at 20_C)Ω28 - 36
Fuel pump resistor resistanceΩ0.45 - 0.65
Injector coil resistance (at 20_C)Ω2-3
Injector fuel leakage rate Drop/minute1 or less
Resistor (for injector) resistance (at 20_C)Ω5.8 - 6.2
SEALANT
ItemSpecified sealantRemark
Engine coolant temperature sensor
threaded portion3M Nut Locking Part No. 4171 or equivalentDrying sealant

MPI -Special Tools13A-7
SPECIAL TOOLS
ToolNumberNameUse
B A
C
D
MB991223
A: MB991219
B: MB991220
C: MB991221
D: MB991222Harness set
A: Test harness
B: LED harness
C: LED harness
adapter
D: ProbeDCheck at the ECU terminals
A: Connector pin contact pressure inspection
B: Power circuit inspection
C: Power circuit inspection
D: Commercial tester connection
MB991502MUT-IIsub
assemblyDReading diagnosis code
DMPI system inspection
MB991348Test harness setDInspection using an analyzer
MB991709Test harnessDMeasurement of voltage during trouble-
shooting
DInspection using an analyzer
DIdle speed control servo (stepper motor)
check
MB991536Check harness for
TPS adjustmentDAdjustment of throttle position sensor
DMeasurement of voltage during trouble-
shooting
MB991658Test harnessDMeasurement of voltage during trouble-
shooting
DInspection using an analyzer
MD998464Test harness
(4 pin, square)DMeasurement of voltage during trouble-
shooting
DOxygen sensor (front) check

MPI -Special Tools13A-8
Tool UseName Number
MD998478Test harness
(3-pin, triangle)DMeasurement of voltage during trouble-
shooting
DInspection using an analyzer
MD998709Adaptor hoseMeasurement of fuel pressure
MD998742Hose adaptor
MB991637Fuel pressure
gauge set
MD998706Injector test setChecking the spray condition of injectors
MB991607Injector test
harness
MD998741Injector test
adaptor
MB991608Clip

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 -TroubleshootingMPI -Troubleshooting13A-11
CONFIRMING FREEZE FRAME DATA
When the engine-ECU detects a malfunction and stores a diagnosis code, it also stores a current status
of the engine. This function is called “Freeze frame” data. By analyzing this “Freeze frame” data with
MUT-II, an effective troubleshooting can be performed.
NOTE
If mulfunctions have been detected in multiple systems, engine-ECU stores one malfunction only, which
has been detected first.
Item No.Data itemUnit/StateItem No.Data itemUnit/State
21Engine coolant temperature
sensor_C81Learn value%
22Crank angle sensorr/min82Feedback%
24Vehicle speedkm/h87Engine load%
FAIL-SAFE FUNCTION REFERENCE TABLE
When the main sensor malfunctions are detected by the diagnosis function, the vehicle is controlled
by means of the pre-set control logic to maintain safe conditions for driving.
Malfunctioning itemControl contents during malfunction
Air flow sensor1. Uses the throttle position sensor signal and engine speed signal (crank angle sensor
signal) to take reading of the basic injector drive time and basic ignition timing from
the pre-set mapping.
2. Fixes the idle speed control servo in the appointed position so idle control is not
performed.
Intake air temperature
sensorControls as if the intake air temperature is 25_C.
Throttle position
sensorNo increase in fuel injection amount during acceleration due to the throttle position sensor
signal.
Engine coolant
temperature sensor1. Controls as if the engine coolant temperature is 80_C.
(Even after sensor signal is correctly recovered, continues until the ignition switch
is set to the “LOCK” (OFF) position.)
2. Rotates radiator fan and condenser fan at high speed.
Camshaft position
sensor1. Inject all fuel cylinders simultaneously. (However, when the No.1 cylinder top dead
centre is not detected at all after the ignition switch is turned to “ON” position.)
2. Shuts off fuel supply after 4 seconds have passed since a failure was detected.
(However, when the No.1 cylinder top dead centre is not detected at all after the
ignition switch is turned to “ON” position.)
Barometric pressure
sensorControls as if the barometric pressure is 101 kPa.
Detonation sensorSwitches the ignition timing from ignition timing for super petrol to ignition timing for standard
petrol.
Alternator FR terminalDoes not control the output of the alternator according to an electrical load. (works as a
normal alternator)

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