Mitsubishi Galant. Manual — part 182

MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-409

HO2S
BANK1
S2

59

Heated oxygen
sensor (rear)

Engine:
warming up

Revving

0 and 600

−

1,000 mV
alternate.

Code
No.P0136,P0
139

P.13A-
127

,

P.13

A-135

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:
"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

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-57

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-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>

13A-410

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

INJECTOR
S 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:
"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

MANIFOL
D SNSR

95

Manifold
differential
pressure
sensor

Engine: warming up, idling

64

−

78 kPa

Code
No.P1400

P.13A-
299

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>

13A-411

PSP
SWITCH

27

Power steering
pressure
switch

Engine: idling

Steering
wheel
stationary

OFF

Code
No.P0551

P.13A-
282

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

14

Throttle
position sensor

Ignition switch:
"ON"

Set to idle
position

535

−

735 mV

(0

−

1%)

Code
No.P0121,P0
122,P0123

P.13A-
87

,

P.13A

-
94

,

P.13A

-99

Gradually
open

Increases in
proportion to
throttle
opening angle

Open fully

4,500

−

5,500

mV (80

−

100%)

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:
"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

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>

13A-412

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-
170

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