battery MITSUBISHI LANCER EVOLUTION 2007 Service Service Manual

MPI -Troubleshooting13A-61
Inspection Procedure 7
Starting disabled (Initial combustion occurs but is
incomplete.), improper starting (Starting time is long.)
Probable cause
Causes shown on right are suspected.DBattery malfunction
DIgnition system malfunction
DFuel system malfunction
DIntake system malfunction
DEGR valve malfunction
DTiming belt malfunction
DImproper compression pressure
DEngine-ECU malfunction
OK
To the next page
OK
Check and repair the harness between
the engine-ECU and earth joint.
DCheck for disconnection and
damage of the earth cable.
(2) NGCheck the following connector:
C-126NG
Repair
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
engine-ECU and battery.
DCheck for disconnection,
short-circuit and damage of the
power cable.Repair
OK
Measure at the C-115 and C-126 en-
gine-ECU connectors.
DMeasure the engine-ECU terminal
voltage.
(1) Voltage between terminal No. 80
and earth
OK:System voltage
(2) Voltage between terminal No. 13
and earth
Voltage between terminal No. 26
and earth
(Ignition switch: ON)
OK:0.5 V or less(1) NGCheck the following connectors:
C-115, C-129, C-05, C-135NG
Repair
OK
Check the timing marks on the timing belt.NGAlign the timing marks on the timing belt.
OK
Check the air intake from the intake hose and intake manifold.NG
Repair
NO
MUT-IIData list
DNo. 13: Intake air temperature sensor
DNo. 21: Engine 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-12.)
OK
MUT-IISelf-Diag code
DIs a diagnosis code output?YESINSPECTION CHART FOR DIAGNOSIS CODE
(Refer to P.13A-12.)
NO
Check the battery. (Refer to GROUP 54 - Battery.)NGReplace the battery.
Has the battery terminal been disconnected recently?YESAfter warming up the engine, idle for approximately 10 minutes.

MPI -Troubleshooting13A-63
Inspection Procedure 8
Unstable idling (Rough idling, hunting), inappropriate
idling speed (High or low idling speed), engine stalls (Die
out) during idling
Probable cause
Causes shown on right are suspected.DIdle speed control system malfunction
DAir/fuel ratio control system malfunction
DIgnition system malfunction
DFuel system malfunction
DIntake and exhaust system malfunction
DExhaust gas purifier system malfunction
DThrottle valve malfunction
DTiming belt malfunction
DImproper compression pressure
DEngine-ECU malfunction
OK
To the next page
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 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 timing marks on the timing belt.NGAlign the timing marks on the timing belt.
OK
MUT-IIData list
DNo. 27: Power steering fluid pressure switch
(Refer to P.13A-103.)NGCheck the Power steering fluid pressure switch system. (Refer to
P.13A-51, PROCEDURE FOR DAIGNOSIS CODE P0551)
OK
MUT-IIData list
DNo. 45: Idle speed control servo position (Refer to P.13A-105.)NGCheck the Idle speed control servo (stepper motor) system. (Refer
to P.13A - 49 PROCEDURE FOR DIAGNOSIS CODE P0505)
NO
MUT-IIData list
DNo. 12: Air flow sensor
DNo. 13: Intake air temperature sensor
DNo. 14: Throttle position sensor
DNo. 21: Engine 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-12.)
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-64
OK
To the next page
OK
Measure at the C-39 engine-ECU connector.
DMeasure the engine-ECU terminal voltage.
DEngine: Idling
DA/C switch: ON (A/C compressor driven state)
DVoltage between terminal No .24 and earth
(A/C setting temperature: Minimum temperature)
(Air volume: Maximum)
OK:1 V or less
(A/C setting temperature: indoor temperature)
(Air volume: Minimum)
OK:System voltageNGCheck the Inspection Procedure 28: A/C load signal system.
(Refer to P.13A-95.)
NG
Replace the alternator.
OK
Check the trouble symptoms.OKIntermittent malfunction
(Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.) NG
OK
Check the harness between the
alternator and engine-ECU.
DCheck for disconnection,
short-circuit and damage of the
output cable.Repair
OK
Measure at the C-40 engine-ECU
connector.
DMeasure the engine-ECU terminal
voltage.
DEngine: Idling (after warm-up)
DRadiator fan: Stopped
DVoltage between terminal No. 33
and earth
OK:Voltage rises 0.2 to 3.5 V when
headlamp is turned OFF and
ON.
DVoltage between terminal No. 41
and earth
OK:Voltage drops whenheadlamp
is turned OFF and ON.NGCheck the following connectors:
C-40, B-21, B-03NG
Repair
OK
Check the harness between the
engine-ECU and earth joint.
DCheck for disconnection and
damage of the earth cable.
(2) NGCheck the following connector:
C-39NG
Repair
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
engine-ECU and battery.
DCheck for disconnection,
short-circuit and damage of the
power cable.Repair
OK
Measure at the C-115 and C-126
engine-ECU connectors.
DMeasure the engine-ECU terminal
voltage.
(1) Voltage between terminal No. 80
and earth
OK:System voltage
(2) Voltage between terminal No. 13
and earth
Voltage between terminal No. 26
and earth
(Ignition switch: ON)
OK:0.5 V or less(1) NGCheck the following connectors:
C-115, C-129, C-05, C-135NG
Repair
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.)
From the previous page

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-77
Inspection Procedure 18
Battery dies
Probable cause
Causes shown on right are suspected.DBattery malfunction
DG terminal short - circuit
DAlternator malfunction
DEngine-ECU malfunction
OK
To the next page
OK
Check the following connector:
C-122NG
Repair
OK
Replace the alternator.NG
OK
Check the harness between the
alternator and ignition switch.
DCheck for damage of the power
cable.Repair NG
OK
Check the harness between the
alternator intermediate connector and
alternator.
DCheck for disconnection and
short-circuit of the power cable.Repair NG
OK
Check the harness between the
alternator intermediate connector and
alternator.
DCheck for short-circuit of the output
cable.Repair
OK
Measure at the B-14 alternator
intermediate connector.
DDisconnect the connector to
measure at the male connector
side.
DIgnition switch: ON
DVoltage between terminal No. 10
and earth
OK:System voltageNGCheck the following connector:
B-22NG
Repair
OK
Check and repair the harness between
the alternator intermediate connector
and ignition switch.
DCheck for disconnection and
short-circuit of the power cable.
OK
Measure at the B-14 alternator
intermediate connector.
DDisconnect the connector to
measure at the female connector
side.
DIgnition switch: ON
DVoltage between terminal No. 9 and
earth
OK:System voltageNGCheck the following connectors:
C-130, C-01, C-213, C-29 drive vehicles>NG
Repair
OK
Check the following connector:
B-14NG
Repair
Check the battery.
(Refer to GROUP 54 - Battery.)NGReplace the battery.

MPI -Troubleshooting13A-82
Inspection Procedure 22
Engine-ECU power supply, engine control relay, ignition
switch-IG1 system
Probable cause
When the ignition switch ON signal is input to the engine-ECU, the engine-ECU
turns the engine control relay ON.
This starts the supply of the battery voltage to the engine-ECU, sensor and
actuator.DIgnition switch malfunction
DEngine control relay malfunction
DEngine-ECU malfunction
OK
Check the engine control relay. (Refer to P.13A-132.)NGReplace the engine control relay.
OK
Check the following connector:B-11XNG
Check the battery. (Refer to GROUP 54 - Battery.)NGReplace the battery.
Repair
OK
OK
Measure at the B-11X engine control
relay connector.
DRemove the relay, and measure
at the connector side.
DVoltage between terminal No. 2
and earth
DVoltage between terminal No. 1
and earth
OK:System voltageNGCheck the following connector:A-13NG
OK
Check the harness between the
battery and engine control relay.
DCheck for disconnection and
short-circuit of the power cable.NGRepair
Repair
NGOK
Check and repair the following
connector:C-126Measure at the C-126 engine-ECU
connector.
DMeasure the engine-ECU terminal
voltage.
DIgnition switch: ON
DVoltage between terminal No. 12
and earth
DVoltage between terminal No. 25
and earth
OK:System voltage
To the next page

MPI -Troubleshooting13A-84
Check the harness and connector of the engine control relay
output power for short-circuit.NG
NG
OK
Check the harness between the engine control relay and
engine-ECU.
DCheck for disconnection, short-circuit and damage of the
output cable.NG
OK
Check the following connector:C-126NG
Intermittent malfunction (Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
From the previous page
Repair
OKRepair
Repair
OK
OK
Check the following connector:A-13NG
Repair
Check the harness between the battery and engine control
relay.
DCheck for damage of the power cable.NG
OKRepair
Check the harness between the engine control relay and
engine-ECU.
DCheck for damage of the output cable.NG
OKRepair
OKCheck the trouble symptoms.
Replace the engine-ECU.

MPI -Troubleshooting13A-85
Inspection Procedure 23
Fuel pump system
Probable cause
DThe engine-ECU turns the fuel pump relay ON during cranking and engine
operation, and supplies the drive power to the fuel pump.
DWhen operating with a low load, the engine-ECU supplies power to the fuel
pump via the resistor. When operating with a high load, power is directly
supplied and the fuel pump fuel discharge amount is increased.DFuel pump relay 1 malfunction
DFuel pump relay 2 malfunction
DFuel pump relay 3 malfunction
DFuel pump resistor malfunction
DFuel pump malfunction
DFuel pump circuit disconnection, short-circuit, or
connector contact defect
DEngine-ECU malfunction
NG
Intermittent malfunction (Refer to
GROUP 00 - Points to Note for
Intermittent Malfunctions.)OKMUT-IIActuator Test
No. 07: Fuel pump
(Refer to P.13A-107.)
NGMUT-IIActuator Test
No. 13: Fuel pump relay 3
(Refer to P.13A-107.)OK
NG
Replace the fuel pump relay 3.NG
NG
Repair
Check the fuel pump relay 1, fuel
pump relay 2 and fuel pump registor.
(Refer to P.13A-132.)
OK
Measure at the B-140 fuel pump
relay 3.
DDisconnect the connector to
measure at the harness side.
DVoltage between terminal No. 2,
terminal No. 4 and earth
(Ignition switch: ON)
OK:System voltageNG
OK
Check the fuel pump relay 3.
(Refer to P.13A-132.)
OK
Check and repair the harness
between the fuel pump resistor and
fuel pump relay 3. OK
NG
Repair OK
NG
Check the trouble symptoms.
RepairOK
Check the harness between the fuel
pump relay 3 and fuel pump resistor.
Replace the engine-ECU.
Check and repair the harness
between the fuel pump relay 3 and
engine-ECU.
Check the following connector:C-122Measure at the C-122 engine-ECU
connector.
DDisconnect the connector to
measure at the harness side.
DDisconnect the C-126
engine-ECU connector, and earth
the terminal No. 22.
DVoltage between terminal No. 126
and earth
(Ignition switch: ON)
OK:System voltageNG
OK
Check the following connectors:
C-209, C-135(1) NG
Repair NG
NG
Check the trouble symptoms.
Check and repair the harness
between the fuel pump relay 1 and
battery.
(2) NGNG
OK
Check the following connector:
C-210Repair
NGCheck the trouble symptoms.
OK
Check the following connectors:
C-223, C-08 ,
C-102 (3) NG
NG
Repair
NG
Check and repair the harness
between the fuel pump relay 1 and
body earth.
Check the trouble symptoms.OK
To the next page
Measure at the C-223 fuel pump
relay 1.
DDisconnect the connector to
measure at the harness side.
(1) Voltage between terminal No. 3
and earth
OK:System voltage
(2) Voltage between terminal No. 1
and earth
(Ignition switch: ON)
OK:Battery voltage
(2) Resistance between terminal No.
4 and earth
OK:2Ωor less
Repair OK
Check the ignition switch. (Refer to
GROUP 54 - Ignition Switch.)
Check the harness between the fuel
pump relay 1 and ignition switch.
NG

MPI -Troubleshooting13A-87
Inspection Procedure 24
Radiator fan control relay system
Probable cause
When the engine control relay turns ON, the radiator fan control relay turns ON
simultaneously, and power is supplied to the fan controller.
The radiator fan motor is driven when the fan motor drive signal is input to the
fan controller from the engine-ECU.DRadiator fan control relay malfunction
DFan controller malfunction
DRadiator fan motor malfunction
DEngine-ECU malfunction
OK
(1) NG
OK
DCheck the radiator fan control relay. (Refer to GROUP 14
- On-vehicle Service.)NGReplace the radiator fan control relay.
Check the following connector:A-09XNG
Repair
OK
OK
(2) NGCheck the following connectors:
C-136 , A-13
, C-108, B-11XNG
OK
Check and repair the harness
between the radiator fan control relay
and body earth.
DCheck for disconnection and
damage of the earth cable.
Repair
OK
Check the following connector:A-21
Check and repair the harness
between the radiator fan control relay
and engine control relay.
DCheck for disconnection and
short-circuit of the power cable.
(3) NGCheck and repair the harness
between the battery and radiator fan
control relay.
DCheck for disconnection and
short-circuit of the power cable.
Measure at the A-09X radiator fan
control relay connector.
DRemove the relay, and measure
at the connector side.
(1) Resistance between terminal No.
3 and earth
OK:2Ωor less
(2) Voltage between terminal No. 1
and earth
(Ignition switch: ON)
OK:System voltage
(3) Voltage between terminal No. 4
and earth
OK:System voltage
NG
Repair
OK
Measure at the A-21 fan controller
connector.
DDisconnect the connector to
measure at the harness side.
DIgnition switch: ON
DVoltage between terminal No. 3
and earth
OK:System voltage
To the next pageNG
OK
Check the harness between the
radiator fan control relay and fan
controller.
DCheck for disconnection and
short-circuit of the output cable.NG
Repair
OK
Check the following connectors:
C-136 , A-13
, C-108, B-11XNG
Repair
OK
OK
Check the harness between the
radiator fan control relay and engine
control relay.
DCheck for damage of the power
cable.NG
Repair
Check and repair the harness
between the radiator fan control relay
and body earth.
DCheck for damage of the earth
cable.