Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 186

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-443

CRANK
SENSOR

22

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

CRANK.
SIGNAL

18

Cranking
signal
(ignition
switch-ST)

Ignition switch:
"ON"

Engine:
stopped

OFF

Procedure
No.31
<M/T>
Procedure
No.32
<A/T>

<M/T>

P.13A-423

<A/T>

P.13A-428

Engine:
cranking

ON

ECT
SENSOR

21

Engine
coolant
temperature
sensor

Ignition switch:
"ON" or with
engine running

Engine coolant
temperature is
-20

°

C (-4

°

F)

-20

°

C (-4

°

F)

Code No.
P0115,
P0116,
P0117

P.13A-68

,

P.13A-76

,

P.13A-82

Engine coolant
temperature is
0

°

C (32

°

F)

0

°

C (32

°

F)

Engine coolant
temperature is
20

°

C (68

°

F)

20

°

C (68

°

F)

Engine coolant
temperature is
40

°

C (104

°

F)

40

°

C (104

°

F)

Engine coolant
temperature is
80

°

C (176

°

F)

80

°

C (176

°

F)

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-444

HO2S
BANK1
S1

11

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

200 mV or less

→

600

−

1,000

mV (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 400
mV or less and
600

−

1,000

mV.

2,500 r/min

HO2S
BANK1
S2

59

Heated
oxygen
sensor (rear)

Engine:
warming up

Revving

0 and 600

−

1,000 mV
alternate.

Code No.
P0136,
P0139

P.13A-133

,

P.13A-142

IAC
VALVE
POS

45

Idle air
control
(stepper)

position

*2

•

Engine
coolant
temperature
: 80

−

95

°

C

(176

−

203

°

F)

•

Lights,
electric
cooling fan
and all
accessories
: OFF

•

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

•

Engine:
idling (when
A/C switch
is "ON." A/C
compressor
should be
operating)

A/C switch:
"OFF"

2

−

25 steps

-

-

A/C switch:
"OFF"

→

"ON"

Increases by
10

−

70 steps

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-445

IAT
SENSOR

13

Intake air
temperature
sensor

Ignition switch:
"ON" or with
engine running

Intake air
temperature is
-20

°

C (-4

°

F)

-20

°

C (-4

°

F)

Code No.
P0111

P.13A-59

Intake air
temperature is
0

°

C (32

°

F)

0

°

C (32

°

F)

Intake air
temperature is
20

°

C (68

°

F)

20

°

C (68

°

F)

Intake air
temperature is
40

°

C (104

°

F)

40

°

C (104

°

F)

Intake air
temperature is
80

°

C (176

°

F)

80

°

C (176

°

F)

IG.
TIMING
ADV

44

Ignition coils
and ignition
power
transistor

•

Engine:
warming up

•

Timing light
is set (to
check actual
ignition
timing)

Engine is idling 2 -18

°

BTDC

-

-

2,500 r/min

22

−

42

°

BTDC

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-446

INJECTORS
B2

41

Injectors

*3

Engine:
cranking

When engine
coolant
temperature is
0

°

C (32

°

F)

21.4

−

32.0 ms -

-

When engine
coolant
temperature is
20

°

C (68

°

F)

11.5

−

17.3 ms

When engine
coolant
temperature is
80

°

C (176

°

F)

9.8

−

14.6 ms

Injectors

*4

•

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

−

2.9 ms

2,500 r/min

1.5

−

2.7 ms

When engine
is suddenly
revved

Increases

MANIFOLD
SNSR

95

Manifold
differential
pressure
sensor

Engine: warming up, idling

64

−

78 kPa

Code No.
P1400

P.13A-324

PSP
SWITCH

27

Power
steering
pressure
switch

Engine: idling

Steering wheel
stationary

OFF

Code No.
P0551

P.13A-307

Steering wheel
turning

ON

TANK
PRS.
SNSR

73

Fuel tank
differential
pressure
sensor

•

Ignition switch: "ON"

•

Fuel tank filler tube cap
removal

-3.3

−

3.3 kPa

-

-

TP
SENSOR

14Throttle

position
sensor

Ignition switch:
"ON"

Set to idle
position

535

−

735 mV

(0

−

1%)

Code No.
P0121,P01
22, P0123

P.13A-90

,

P.13A-98

,

P.13A-103

Gradually open Increases in

proportion to
throttle
opening angle

Open fully

4,500

−

5,500

mV (80

−

100%)

MUT-II SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPECTION
PROCEDURE
NO.

REFERENCE
PAGE