Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 331

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-523

INJECTOR
B1

47

Injectors

(bank 1)

*3

Engine:
cranking

When engine
coolant
temperature is
0

°

C (32

°

F)

13.2

−

19.8 ms -

-

When engine
coolant
temperature is
20

°

C (68

°

F)

33.2

−

49.8 ms

When engine
coolant
temperature is
80

°

C (176

°

F)

8.2

−

12.4 ms

Injectors

(bank 1)

*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 2.1

−

3.3 ms

2500 r/min

1.8

−

3.0 ms

When engine
is suddenly
revved

Increases

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) <3.0L ENGINE>

13B-524

INJECTOR
B2

41

Injectors

(bank 2)

*3

Engine:
cranking

When engine
coolant
temperature is
0

°

C (32

°

F)

13.2

−

19.8 ms -

-

When engine
coolant
temperature is
20

°

C (68

°

F)

33.2

−

49.8 ms

When engine
coolant
temperature is
80

°

C (176

°

F)

8.2

−

12.4 ms

Injectors

(bank 2)

*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 2.1

−

3.3 ms

2,500 r/min

1.8

−

3.0 ms

When engine
is suddenly
revved

Increases

MANIFOL
D SNSR

95

Manifold
differential
pressure
sensor

Engine: warming up, idling

62

−

76 kPa

Code No.
P1400

P.13B-393

PSP
SWITCH

27

Power
steering
pressure
switch

Engine: idling

Steering wheel
stationary

OFF

Code No.
P0551

P.13B-376

Steering wheel
turning

ON

TANK
PRS.
SNSR

73

Fuel tank
differential
pressure
sensor

•

Ignition switch: "ON"

•

Fuel cap removal

−

3.3

−

3.3 kPa

-

-

TP
SENSOR

14

Throttle
position
sensor

Ignition switch:
"ON"

Set to idle
position

535

−

735 mV

(0

−

1%)

Code No.
P0121,
P0122,
P0123

P.13B-88

,

P.13B-96

,

P.13B-102

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

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-525

VAF
RESET
SIG

34

Volume air
flow sensor
reset signal

Engine:
warming up

Engine is idling ON

-

-

2,500 r/min

OFF

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 17

−

46 HZ

(2.2

−

5.7 g/s)

-

-

2,500 r/min

63

−

103 Hz

(9.0

−

14.7 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.13B-248

Engine: idling

Engine coolant
temperature is
-20

°

C (-40

°

F)

1,300

−

1,500

r/min

Engine coolant
temperature is
0

°

C (32

°

F)

1,300

−

1,500

r/min

Engine coolant
temperature is
20

°

C (68

°

F)

1,300

−

1,500

r/min

Engine coolant
temperature is
40

°

C (104

°

F)

1,040

−

1,240

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) <3.0L ENGINE>

13B-526

ECT
SENSOR

21

*6

Engine
coolant
temperature
sensor

Ignition switch:
"ON" or with
engine running

Engine coolant
temperature is

−

20

°

C (-4

°

F)

−

20 degC

(

−

4 degF)

Code No.
P0115,
P0116,
P0117

P.13B-66

,

P.13B-74

,

P.13B-80

Engine coolant
temperature is
0

°

C (32

°

F)

0 degC
(32 degF)

Engine coolant
temperature is
20

°

C (68

°

F)

20 degC
(68 degF)

Engine coolant
temperature is
40

°

C(104

°

F)

40 degC
(104 degF)

Engine coolant
temperature is
80

°

C (176

°

F)

80 degC
(176 degF)

ENGINE
LOAD 2

87

*6

Calculation
load value

•

Engine:
warming up

Engine is idling 10

−

30%

-

-

2,500 r/min

10

−

30%

HO2S
BANK1
S1

A1

*6

Heated
oxygen
sensor (bank
1, sensor 1)

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

When at 4,000
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.13B-109

,

P.13B-118

,

P.13B-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 PCM
<A/T> or ECM
<M/T>.)

Engine is idling Voltage

changes
repeatedly
between 0.4 V
or less and 0.6

−

1 V.

2500 r/min

HO2S
BANK1
S2

A2

*6

Heated
oxygen
sensor (bank
1, sensor 2)

Engine:
warming up

Revving

0 and 0.6

−

1 V

alternate.

Code No.
P0136,
P0139

P.13B-134

,

P.13B-144

MUT-II SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION
ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPECTION
PROCEDURE
NO.

REFERENCE
PAGE