Mitsubishi Galant 9G. Manual — part 1212

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>

13B-1148

MAP
SENSOR

95

Manifold
absolutel
pressure
(MAP) sensor

• Ignition

switch: "ON"

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

101 kPa
(29.8 in.Hg)

Code No.
P0106,
P0107,
P0108

P.13B-74

,

P.13B-88

,

P.13B-100

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

95 kPa (28.1
in.Hg)

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

88 kPa (26.0
in.Hg)

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

81 kPa (23.9
in.Hg)

Engine: warming up, idling

16 - 36 kPa
(4.7 - 10.6
in.Hg)

When engine is suddenly
revved

Manifold
pressure
varies

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) <3.8L ENGINE>

13B-1149

MAP/MDP
SNSR.

32*

4

Manifold
absolutel
pressure
(MAP) sensor

• Ignition

switch: "ON"

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

101 kPa
(29.8 in.Hg)

Code No.
P0106,
P0107,
P0108

P.13B-74

,

P.13B-88

,

P.13B-100

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

95 kPa (28.1
in.Hg)

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

88 kPa (26.0
in.Hg)

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

81 kPa (23.9
in.Hg)

Engine: warming up, idling

16 - 36 kPa
(4.7 - 10.6
in.Hg)

When engine is suddenly
revved

Manifold
pressure
varies

MIL
DISTANCE

A9*

4

MIL distance

Running distance in the malfunction indicator
lamp (SERVICE ENGINE SOON or Check
Engine Lamp)

-

-

PSP
SWITCH

27

Power steering
pressure
switch

Engine: idling

Steering wheel
stationary

OFF

Code No.
P0551

P.13B-854

Steering wheel
turning

ON

SHORT
TRIM B1

82*

4

Short-term fuel
trim bank 1

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

−7.4 to 7.4% Code No.

P0171,
P0172

P.13B-414

,

P.13B-425

SHORT
TRIM B2

84*

4

Short-term fuel
trim bank 2

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

−7.4 to 7.4% Code No.

P0174,
P0175

P.13B-432

,

P.13B-442

SYS.
STATUS
B1

88*

4

Fuel control
system status
bank 1 (right)

Engine:
warming up

2,500 r/min

Closed loop Code No.

P0134

P.13B-231

When engine
is suddenly
revved

Open loop

−

drive
condition

SYS.
STATUS
B2

89*

4

Fuel control
system status
bank 2 (left)

Engine:
warming up

2,500 r/min

Closed loop Code No.

P0154

P.13B-341

When engine
is suddenly
revved

Open loop

−

drive
condition

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) <3.8L ENGINE>

13B-1150

TANK
PRS.
SNSR

73

Fuel tank
differential
pressure
sensor

• Ignition switch: "ON"

• Fuel cap removal

−3.3 to 3.3

kPa
(

−0.97 to

0.97 in.Hg)

−

−

TP LEARN
MID

9A

Throttle
position sensor
(main)
mid opening
learning value

Ignition switch: "ON"

600

− 1,200

mV

Code No.
P0122,
P0123

P.13B-162

,

P.13B-172

TP SNSR
(MAIN)

79

Throttle
position sensor
(main)

• Remove the

intake air
hose at the
throttle body

• Disconnect

the throttle
position
sensor
connector,
and then
connect
terminal
numbers
No. 3, No. 4,
No. 5 and
No. 6 with
the use of
the special
tool:
MB991658.

• Ignition

switch: "ON"

Fully close the
throttle valve
with your finger

300

− 700

mV

Code No.
P0122,
P0123

P.13B-162

,

P.13B-172

Fully open the
throttle valve
with your finger

4,000 mV or
more

Engine:
warming up,
idling

No load

520

− 620

mV

A/C switch:
"off"

→ "ON"

Voltage rise

Shift lever: "N"
→"D"

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) <3.8L ENGINE>

13B-1151

TP SNSR
(SUB)

14

Throttle
position sensor
(sub)

• Remove the

intake air
hose at the
throttle body

• Disconnect

the throttle
position
sensor
connector,
and then
connect
terminal
numbers
No. 3, No. 4,
No. 5 and
No. 6 with
the use of
the special
tool:
MB991658.

• Ignition

switch: "ON"

Fully close the
throttle valve
with your finger

2,200

−

2,800 mV

Code No.
P0222,
P0223

P.13B-550

,

P.13B-560

Fully open the
throttle valve
with your finger

4,000 mV or
more

TP
SENSOR

8A*

4

Throttle
position sensor

• Remove the

intake air
hose at the
throttle body

• Disconnect

the throttle
position
sensor
connector,
and then
connect
terminal
numbers
No. 3, No. 4,
No. 5 and
No. 6 with
the use of
the special
tool:
MB991658.

• Ignition

switch: "ON"

Fully close the
throttle valve
with your finger

0

− 5 %

Code No.
P0122,
P0123

P.13B-162

,

P.13B-172

Fully open the
throttle valve
with your finger

88 % or
more

TR
SWITCH

29

Transmission
range switch

P or N

P, N

P0705
(DTC27),
P0705
(DTC28)

P.23A-120

,

P.23A-16

5

Except P or N

D, 2, L, R

MUT-III
SCAN TOOL
DISPLAY

ITEM
NO.

INSPECTION ITEM

INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPECTION
PROCEDURE
NO.

REFERENCE
PAGE