Mitsubishi Lancer Evolution IX. Manual — part 475

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI)

13A-375

49

A/C relay

Engine: After
warm-up, idle
operation after
warm-up

A/C switch: OFF

OFF

Procedure
No. 28

P.13A-3
44

A/C
switch:
ON

A/C
compressor is
not driven

OFF

A/C
compressor is
driven

ON

59

Oxygen
sensor
(rear)

Engine: After
warm-up

At excessive
acceleration

0 mV or less

⇔

600

− 1,000 mV

(altered)

Code
No.P0136

P.13A-8
8

7E

Variable
valve timing
phase angle

Engine: After
warm-up

Idling without load

0

− 5°CA

−

−

2,500 r/min without any
load

8

− 12°CA

12
*

5

Air flow
sensor

• Engine coolant

temperature: 80
−95°C

• Lamps, electric

cooling fan and
all accessories:
OFF

• Transmission:

Neutral

Idle operation

19

− 6.7 gm/s

−

−

2,500 r/min

7.9

− 12.1 gm/s

Acceleration

According to
acceleration,
frequency is
amplified.

13
*

5

Intake air
temperature
sensor

Ignition switch:
"ON" or engine
running

Intake air temperature:
−20°C

−20°C

Code No.
P0110

P.13A-4
5

Intake air temperature:
0

°C

0

°C

Intake air temperature:
20

°C

20

°C

Intake air temperature:
40

°C

40

°C

Intake air temperature:
80

°C

80

° C

21
*

5

Engine
coolant
temperature
sensor

Ignition switch:
"ON" or engine
running

Coolant temperature:
−20°C

−20°C

Code No.
P0115

P.13A-5
2

Coolant temperature:
0

°C

0

°C

Coolant temperature:
20

°C

20

°C

Coolant temperature:
40

°C

40

°C

Coolant temperature:
80

°C

80

°C

Item
No.

Inspection
item

Inspection condition

Normal condition

Inspection
procedure
No.

Reference
page

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI)

13A-376

22
*

5

Crank angle
sensor

• Engine:

Cranking

• Tachometer:

Connected

Compare engine speed
on tachometer with the
value displayed on
M.U.T.-II/III

Matched

−

−

Engine: Idle
operation

Coolant temperature:
−20°C

1,200

− 1,400

r/min

Coolant temperature:
0

°C

1,200

− 1,400

r/min

Coolant temperature:
20

°C

1,200

− 1,400

r/min

Coolant temperature:
40

°C

1,050

− 1,250

r/min

Coolant temperature:
80

°C

750

− 950 r/min

24
*

5

Vehicle
speed
sensor

Drive 40 km/h

Approximately 40
km/h

Code No.
P0500

P.13A-1
87

81
*

5

Long-term
fuel
compensati
on

Engine: After warm-up 2,500 r/min without
any load (during closed loop)

−12.5 to 12.5%

Code No.
P0170

P.13A-1
01

82
*

5

Shot-term
fuel
compensati
on

Engine: After warm-up 2,500 r/min without
any load (during closed loop)

−20 to 20%

Code No.
P0170

P.13A-1
01

87
*

5

Calculation
load value

Engine: After
warm-up

Idle operation

15

− 35%

−

−

2,500 r/min

15

− 35%

88
*

5

Fuel control
condition

Engine: After
warm-up

2,500 r/min

Closed loop

−

−

Acceleration

Open loop

−drive

condition

8A
*

5

Throttle
position
sensor
(Throttle
opening
angle)

Ignition switch:
"ON"

Set to Idle position

0

− 1%

Code No.
P0120

P.13A-6
0

Release accelerator
pedal gradually

Increased
according to
accelerator pedal
stroke

Release accelerator
pedal fully

80

− 100%

Item
No.

Inspection
item

Inspection condition

Normal condition

Inspection
procedure
No.

Reference
page

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI)

13A-377

NOTE:

.

*1: On the new vehicle (mileage: 500 km or less), air flow sensor output frequency may be higher by

approximately 10%.

*2: Injector drive time ranges shown are when power voltage is 11 V and the cranking speed is 250 r/min.

or less.

*3: On the new vehicle (mileage: 500 km or less), injector drive time may be longer by approximately 10%.
*4: On the new vehicle (mileage: 500 km or less), the number of steps of stepper motor may be larger by

approximately 30 steps.

*5: When service data in check mode is selected, the data is not displayed.

A1
*

5

Oxygen
sensor

Engine: After
warm-up (leaner by
deceleration, richer
by acceleration)

Excessive deceleration
from 4,000 r/min

0.2 V or less

Code No.
P0130

P.13A-7
5

At excessive
acceleration

0.6

− 1 V

Engine: After
warm-up (using
oxygen sensor,
check air-fuel ratio
as well as control
status by
engine-ECU.

Idle operation

0.2 V or less

2,500 r/min

0.6

− 1 V

A2
*

5

Oxygen
sensor
(rear)

Engine: After
warm-up

At excessive
acceleration

0 V or less

⇔ 0.6

− 1 V (altered)

Code
No.P0136

P.13A-8
8

Item
No.

Inspection
item

Inspection condition

Normal condition

Inspection
procedure
No.

Reference
page

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI)

13A-378

ACTUATOR TEST REFERENCE TABLE

M1131152501324

Item
No.

Inspection
item

Drive content

Inspection conditions

Normal
condition

Code No.
/Inspection
procedure
No.

Reference
page

01

Injector

Cut off No. 1
injector

Engine: After warm-up,
idle operation (Cut off
injectors sequentially to
check for a cylinder that
does not change engine in
idle status.

Engine is
changed
(becomes
unstable or
stalled)

Code No.
P0201

P.13A-10
5

02

Cut off No. 2
injector

Code No.
P0202

P.13A-11
1

03

Cut off No. 3
injector

Code No.
P0203

P.13A-11
7

04

Cut off No. 4
injector

Code No.
P0204

P.13A-12
3

07

Fuel pump

Drive fuel pump
to circulate fuel

Ignition
switch: "ON"

Hold return
hose with
fingers to
feel pulse of
fuel flowing

Pulse is felt

Procedure
No. 24

P.13A-31
3

Check for
pump
operating
noise near
fuel tank

Operating
noise audible

08

Purge
control
solenoid
valve

Switch solenoid
valve from OFF
to ON

Ignition switch: "LOCK"
(OFF)

When the valve
is actuated,
operating noise
is audible

Code No.
P0443

P.13A-18
2

09

Fuel
pressure
control
solenoid
valve

Switch solenoid
valve from OFF
to ON

Ignition switch: "ON"

When the valve
is actuated,
operating noise
is audible

Code No.
P0090

P.13A-19

10

EGR control
solenoid
valve

Switch solenoid
valve from OFF
to ON

Ignition switch: "ON"

When the valve
is actuated,
operating noise
is audible.

Code No.
P0403

P.13A-17
5

12

Waste gate
solenoid
valve

Switch solenoid
valve from OFF
to ON

Ignition switch: "ON"

When the valve
is actuated,
operating noise
is audible

Code No.
P0243

P.13A-13
0

13

Fuel pump
relay 3

Fuel pump Relay
3 turns from OFF
to ON

Ignition switch: "ON"

Sound of
Operation is
heard

Procedure
No. 24

P.13A-31
3

17

Basic ignition
timing

Switch
engine-ECU to
ignition timing
adjusting mode

• Engine: Idle operation

• Install timing light

5

° BTDC

−

−