engine oil MITSUBISHI LANCER EVOLUTION 2007 Service Repair Manual

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-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-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 -TroubleshootingMPI -Troubleshooting13A-109
Engine-ECU Connector Terminal Arrangement
Terminal No.Check itemCheck condition (Engine condition)Normal condition
1No. 1 injectorWhile engine is idling after having warmed up,
suddenlydepresstheacceleratorpedal
From 11 - 14 V, momentarily
dropsslightly
14No. 2 injector
suddenlydepressthe accelerator pedal.drops slightly
2No. 3 injector
15No. 4 injector
3Fuel pressure control
solenoidvalve
Ignition switch: “ON”System voltage
solenoidvalve
Engine: Cranking→Idle operation
(within approximately 2 minutes or less)1 V or less→System voltage
4Stepper motor coil
Engine: Soon after the warmed up engine is
startedSystem voltage↔0-6V
(Changes repeatedly)
17Stepper motor coil

5Stepper motor coil

18Stepper motor coil

6EGR control solenoid
valve
Ignition switch: “ON”System Voltage
valve
While engine is idling, suddenly depress the
accelerator pedal.From system voltage,
momentarily drops
8A/C relayDEngine: Idle operation
DA/Cswitch:OFF→ON(A/Ccompressor
System voltage or momen-
tarily6Vormore→1VorDA/Cswitch:OFF→ON(A/Ccompressor
runs)tarily6Vor more→1Vor
less
9Purge control sole-
noidvalve
Ignition switch: “ON”System voltage
noidvalve
Engine: Idle operation1 V or less
10Ignition coil - No.1,
No.4Engine speed: 3,000 r/min0.3 - 3.0 V
23Ignition coil - No.2,
No.3
11Waste gate solenoid
valve
Ignition switch: “ON”System voltage
valve
Engine: After warm-up, idle operation
(When using premium gasoline)1 V or less

MPI -Troubleshooting13A-115
Terminal No. Normal condition (Check condition)Inspection item
3-12Fuel pressure control solenoid valve28 - 36Ω(at 20_C)
4-12Stepper motor coil (A1)28 - 33Ω(at 20_C)
17 - 12Stepper motor coil (A2)
5-12Stepper motor coil (B1)
18 - 12Stepper motor coil (B2)
6-12EGR control solenoid valve36 - 44Ω(at 20_C)
9-12Purge control solenoid valve22 - 26Ω(at 20_C)
11 - 1 2Waste gate solenoid valve62 - 74Ω(at 20_C)
13 - Body earthENGINE-ECU earthContinuity (0Ω)
26 - Body earthENGINE-ECU earth
53 - 12Secondary air control solenoid valve28 - 36Ω(at 20_C)
54 - 12Oxygen sensor heater (Rear)11 - 1 8Ω(at 20_C)
60 - 12Oxygen sensor heater (Front)4.5 - 8.0Ω(at 20_C)
72 - 92Intake air temperature sensor13 - 17 kΩ(When intake air temperature is - 20_C)
5.7 - 6.7 kΩ(When intake air temperature is 0_C)
2.3 - 3.0 kΩ(When intake air temperature is 20_C)
1.0 - 1.5 kΩ(When intake air temperature is 40_C)
0.56 - 0.76 kΩ(When intake air temperature is 60_C)
0.30 - 0.42 kΩ(When intake air temperature is 80_C)
83 - 92Engine coolant temperature sensor14 - 17 kΩ(When coolant temperature is - 20_C)
5.1 - 6.5 kΩ(When coolant temperature is 0_C)
2.1 - 2.7 kΩ(When coolant temperature is 20_C)
0.9 - 1.3 kΩ(When coolant temperature is 40_C)
0.48 - 0.68 kΩ(When coolant temperature is 60_C)
0.26 - 0.36 kΩ(When coolant temperature is 80_C)

MPI -Troubleshooting13A-120
Standard wave pattern
(V)
Point A
Point BSolenoid back electromotive force
(Approx. 7×10 V)
Injector drive time
Power voltage
Drive signal: ON Drive signal: OFF
Time 50
0
Wave Pattern Observation Points
Point A: Height of solenoid back electromotive force
Contrast with standard wave patternProbable cause
Solenoid coil back electromotive force is low or doesn’t
appear at all.Short in the injector solenoid
Point B: Injector drive time
DThe injector drive time will be synchronized with the MUT-II
tester display.
DWhen the engine is suddenly raced, the drive time will
be greatly extended at first, but the drive time will soon
match the engine speed.
When idling
When racing ---
--

MPI -Troubleshooting13A-121
IDLE SPEED CONTROL SERVO (STEPPER MOTOR)
Measurement Method
1. Disconnect the idle speed control servo connector, and
connect the special tool (test harness: MB991709) in
between.
2. Connect the analyzer special patterns pickup to the idle
speed control servo-side connector terminal No. 1,
terminal No. 3, terminal No. 4 and terminal No. 6
respectively.
Alternate Method (Test harness not available)
1. Connect the analyzer special patterns pickup to
engine-ECU terminal No. 4, connection terminal No. 5,
connection terminal No. 17, and connection terminal No.
18 respectively.
Standard Wave Pattern
Observation conditions
FunctionSpecial patterns
Pattern heightHigh
Pattern selectorDisplay
Engine conditionWhen the engine coolant temperature is 20_C or below, turn the ignition switch from “LOCK”
(OFF) position to “ON” position (without starting the engine).
While the engine is idling, turn the A/C switch to ON.
Immediately after starting the warm engine
Standard wave pattern
Stepper
motor
control
signal
wave
pattern(V)
30
20
10The wave pattern
appears for an
instant, but soon
disappears.Point B
Coil reverse electromotive
force (Approx. 3×10 V)Point A
Induced electromotive force
from the motor turning
Time
Special
patterns
pickupAnalyzer

MPI -Troubleshooting13A-122
Wave Pattern Observation Points
Check that the standard wave pattern appears when the stepper motor is operating.
Point A: Presence or absence of induced electromotive force from the motor turning. (Refer to the abnormal
wave pattern.)
Contrast with standard wave patternProbable cause
Induced electromotive force does not appear or is extremely small.Motor is malfunctioning
Point B: Height of coil reverse electromotive force
Contrast with standard wave patternProbable cause
Coil reverse electromotive force does not appear or is extremely small.Short in the coil
Examples of Abnormal Wave Pattern
DExample 1
Cause of problem
Motor is malfunctioning. (Motor is not operating.)
Wave pattern characteristics
Induced electromotive force from the motor turning does
not appear.
DExample 2
Cause of problem
Open circuit in the line between the stepper motor and
the engine-ECU.
Wave pattern characteristics
Current is not supplied to the motor coil on the open
circuit side. (Voltage does not drop to 0 V.)
Furthermore, the induced electromotive force waveform
at the normal side is slightly different from the normal
waveform.
Open
circuit
side
Normal
side

MPI -Troubleshooting13A-123
IGNITION COIL AND POWER TRANSISTOR
DIgnition coil primary signal
Refer to GROUP 16 - Ignition system.
DPower transistor control signal
Measurement Method
1. Disconnect the ignition coil connector, and connect the
special tool (test harness: MB991658) in between. (All
terminals should be connected.)
2. Connect the analyzer special patterns pickup to terminal
No. 3 of each ignition coil connector in turn.
Alternate Method (Test harness not available)
1. Connect the analyzer special patterns pickup to
engine-ECU terminal No. 10 (No. 1 - No. 4), terminal
No. 23 (No. 2 - No. 3) respectively.
Standard Wave Pattern
Observation condition
FunctionSpecial patterns
Pattern heightLow
Pattern selectorDisplay
Engine r/minApproximately 1,200 r/min
Standard wave pattern
Crank angle
sensor output
wave pattern
Power transistor
control signal
wave pattern(V)
75_BTDC5_BTDCT: Revolution time corresponding to a crank angle of 180_
Compression top dead center
θ: Spark
advance
angleIgnition period
OFF ON
Dwell section
T1: Time computed by the engine-ECUTime θ T1T
6
4
2
0
4
2
0
Special
patterns
pickupAnalyzer