Mitsubishi Eclipse. Manual — part 351

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-897

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 the engine
at 4,000 r/min,
decelerate
suddenly

0.2 volt or less Code No.

P0130, P0131,
P0132, P0133,
P0134

P.13A-214

,

P.13A-233

,

P.13A-241

,

P.13A-247

,

P.13A-253

When engine is
suddenly

0.6

− 1 volt

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
volt or less and
0.6

− 1 volt.

2,500 r/min

HO2S
BANK2
S2

59

Heated
oxygen sensor
(rear)

Engine:
warming up

Revving

0 and 600

−

1,000 millivolts
alternate.

Code No.
P0136, P0137,
P0138, P0139

P.13A-277

,

P.13A-294

,

P.13A-302

,

P.13A-308

HO2S
BANK1
S2

A2

*6

Heated
oxygen sensor
(rear)

Engine:
warming up

Revving

0 and 0.6

− 1

volt alternate.

Code No.
P0136, P0137,
P0138, P0139

P.13A-277

,

P.13A-294

,

P.13A-302

,

P.13A-308

MUT-III
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>

13A-898

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 STEP

−

−

A/C switch: OFF
→ ON

Increases by
10

− 70 STEP

• A/C switch:

"OFF"

• Selector

lever: "N" to
"D" range

Increases by 5
− 50 STEP

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, P0112,
P0113

P.13A-101

,

P.13A-111

,

P.13A-118

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)

MUT-III
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>

13A-899

IAT
SENSOR

13

*6

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, P0112,
P0113

P.13A-101

,

P.13A-111

,

P.13A-118

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

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

MUT-III
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>

13A-900

INJECTOR
BNK2

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

LONG
TRIM B1

81

*6

Long-Term
Fuel Trim
(trim)

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

−12.5 − 12.5 % Code No.

P0171, P0172

P.13A-328

,

P.13A-337

MAP
SENSOR

95

Manifold
absolute
pressure
sensor

• Engine:

coolant
temperature
: 80

− 90°C

(176

−

203

°F)

• Lights,

electric
cooling fan
and all
accessories
: OFF

• Transaxle:

Neutral
(A/T: P
range)

• Ignition

switch: ON

Engine stopped
[At altitude of 0 m
(0 ft.)]

101 kPa (29.8
in.Hg)

Code No.
P0106, P0107,
P0108

P.13A-53

,

P.13A-68

,

P.13A-89

Engine stopped
[At altitude of 600
m (1,969 ft.)]

95 kPa (28.1
in.Hg)

Engine stopped
[At altitude of
1,200 m (3,937
ft.)]

88 kPa (26.0
in.Hg)

Engine stopped
[At altitude of
1,800 m (5,906
ft.)]

81 kPa (23.9
in.Hg)

Engine: Idling

16

− 36 kPa

(4.7

− 10.6

in.Hg)

When engine is
suddenly raced

Varies

MUT-III
SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPECTION
PROCEDURE
NO.

REFERENCE
PAGE