Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 187

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-447

VAF
SENSOR

12

Volume air
flow sensor
(mass air

flow rate)

*5

•

Engine
coolant
temperature
: 80

−

95

°

C

(176

−

203

°

F)

•

Lights,
electric
cooling fan
and all
accessories
: "OFF"

•

Transaxle:
neutral (A/T:
"P" range)

Engine is idling 12

−

38 HZ

(1.7

−

4.2 g/s)

-

-

2,500 r/min

55

−

95 Hz (7.9

−

12.1 g/s)

Engine is
revved

Frequency (or
air flow
volume)
increases in
response to
revving

CRANK
SENSOR

22

*6

Crankshaft
position

sensor

*1

•

Engine: cranking

•

Tachometer: connected

Engine speeds
displayed on
the scan tool
and
tachometer are
identical.

Code No.
P0335

P.13A-181

Engine: idling

Engine coolant
temperature is
-20

°

C (-40

°

F)

1,275

−

1,475

r/min

Engine coolant
temperature is
0

°

C (32

°

F)

1,220

−

1,420

r/min

Engine coolant
temperature is
20

°

C (68

°

F)

1,100

−

1,300

r/min

Engine coolant
temperature is
40

°

C (104

°

F)

930

−

1,130

r/min

Engine coolant
temperature is
80

°

C (176

°

F)

600

−

800

r/min

MUT-II SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPECTION
PROCEDURE
NO.

REFERENCE
PAGE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-448

ECT
SENSOR

21

*6

Engine
coolant
temperature
sensor

Ignition switch:
"ON" or with
engine running

Engine coolant
temperature is
-20

°

C (-4

°

F)

-20 deg C
(-4 deg F)

Code No.
P0115,
P0116,
P0117

P.13A-68

,

P.13A-76

,

P.13A-82

Engine coolant
temperature is
0

°

C (32

°

F)

0 deg C
(32 deg F)

Engine coolant
temperature is
20

°

C (68

°

F)

20 deg C
(68 deg F)

Engine coolant
temperature is
40

°

C(104

°

F)

40 deg C
(104 deg F)

Engine coolant
temperature is
80

°

C (176

°

F)

80 deg C
(176 deg F)

ENGINE
LOAD

87

*6

Calculation
load value

•

Engine:
warming up

Engine is idling 12

−

32%

-

-

2,500 r/min

10

−

30%

HO2S
BANK1
S1

A1

*

6

Heated
oxygen
sensor (front)

Engine:
Warming up
(air/fuel
mixture is
made leaner
when
decelerating,
and is made
richer when
revving.)

When at 4000
r/min, engine is
suddenly
decelerated

0.2 V or less

→

0.6

−

1 V (After

several
seconds have
elapsed)

Code No.
P0130,
P0133,
P0134

P.13A-109

,

P.13A-118

,

P.13A-120

Engine:
Warming up
(the heated
oxygen sensor
signal is used
to check the
air/fuel mixture
ratio, and
control
condition is
also checked
by the ECM
<M/T> or PCM
<A/T>)

Engine is idling Voltage

changes
repeatedly
between 0.4 V
or less and 0.6

−

1 V.

2,500 r/min

HO2S
BANK1
S2

A2

*

6

Heated
oxygen
sensor (rear)

Engine:
warming up

Revving

0 and 0.6

−

1 V

alternate.

Code No.
P0136,
P0139

P.13A-133

,

P.13A-142

MUT-II SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPECTION
PROCEDURE
NO.

REFERENCE
PAGE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-449

IAT
SENSOR

13

*6

Intake air
temperature
sensor

Ignition switch:
"ON" or with
engine running

Intake air
temperature is
-20

°

C (-4

°

F)

-20 deg C
(-4 deg F)

Code No.
P0111

P.13A-59

Intake air
temperature is
0

°

C (32

°

F)

0 deg C
(32 deg F)

Intake air
temperature is
20

°

C (68

°

F)

20 deg C
(68 deg F)

Intake air
temperature is
40

°

C (104

°

F)

40 deg C
(104 deg F)

Intake air
temperature is
80

°

C (176

°

F)

80 deg C
(176 deg F)

IG.
TIMING
ADV

44

*6

Ignition coils
and ignition
power
transistor

•

Engine:
warming up

•

Timing light
is set (to
check actual
ignition
timing)

Engine is idling 2 -18 deg

-

-

2,500 r/min

22

−

42 deg

LONG
TRIM B1

81

*6

Long-term
fuel trim

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

-12.5

−

12.5%

Code No.
P0171,
P0172

P.13A-151

,

P.13A-157

SHORT
TRIM B1

82

*6

Short-term
fuel trim

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

-25

−

16.8%

Code No.
P0171,
P0172

P.13A-151

,

P.13A-157

SYS.
STATUS
B1

88

*6

Fuel control
condition

Engine:
warming up

2,500 r/min

Closed loop

-

-

When engine
is suddenly
revved

Open circuit

−

drive condition

TP
SENSOR

8A

*

6

Throttle
position
sensor

Ignition switch:
"ON"

Set to idle
position

0.535

−

0.735

V (0

−

1%)

Code No.
P0121,
P0122,
P0123

P.13A-90

,

P.13A-98

,

P.13A-103

Gradually open Increases in

proportion to
throttle
opening angle

Open fully

4.5

−

5.5 V

(80

−

100%)

MUT-II SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPECTION
PROCEDURE
NO.

REFERENCE
PAGE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-450

ACTUATOR TEST REFERENCE TABLE

M1131009000057

VAF
SENSOR

12

*6

Volume air
flow sensor
(mass air

flow rate)

*5

•

Engine
coolant
temperature
: 80

−

95

°

C

(176

−

203

°

F)

•

Lights,
electric
cooling fan
and all
accessories
: "OFF"

•

Transaxle:
neutral (A/T:
"P" range)

Engine is idling 1.7

−

4.2 gm/s

-

-

2,500 r/min

10

−

30 gm/s

Engine is
revved

Frequency (or
air flow
volume)
increases in
response to
revving

VSS

24

*6

Vehicle
speed sensor

Drive at 40 km/h (25 mph).

Approximately
40 km/h (25
mph)

Code No.
P0500

<M/T>

P.13A-280

,

<A/T>

P.13A-288

MUT-II SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPECTION
PROCEDURE
NO.

REFERENCE
PAGE

MUT-II
SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

DRIVE
CONTENTS

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPECTION
PROCEDURE
NO.

REFERENCE
PAGE

EGR
SOLEN
OID

10

EGR
solenoid

Solenoid
valve turns
from OFF to
ON.

Ignition switch: "ON"

Clicks when
solenoid
valve is
driven.

Code No.
P0403

P.13A-201

EVAP
PURGE
SOL

08

Evaporative
emission
purge
solenoid

Solenoid
valve turns
from OFF to
ON.

Ignition switch: "ON"

Clicks when
solenoid
valve is
driven.

Code No.
P0443

P.13A-221

EVAP
VENT
SOL

29

Evaporative
emission
ventilation
solenoid

Solenoid
valve turns
from OFF to
ON.

Ignition switch: "ON"

Clicks when
solenoid
valve is
driven.

Code No.
P0446

P.13A-229