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Mitsubishi Colt Ralliart. Manual - part 753

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-337

Crank angle
sensor

• Engine: Cranking

• Tachometer:

Connected

Compare engine
speed on
tachometer with the
value displayed on
M.U.T.-III

Matched

−

• Engine: Idle

operation (At
approximately 1
minute later from
when the engine
starting sequence
is completed, the
engine is in the
steady state.)

• Transmission:

Neutral

• A/C switch: OFF

Coolant
temperature:

−20°C

1,300

− 1,500

r/min

Coolant
temperature: 0

°C

1,290

− 1,490

r/min

Coolant
temperature: 20

°C

1,250

− 1,450

r/min

Coolant
temperature: 40

°C

1,160

− 1,360

r/min

Coolant
temperature: 85

°C

650

− 850 r/min

Barometric
pressure
sensor

Ignition switch: ON

Altitude: 0 m

101 kPa

Code No.
P0105

P.13B-37

Altitude: 600 m

95 kPa

Altitude: 1,200 m

88 kPa

Altitude: 1,800 m

81 kPa

Volumetric
efficiency

• Engine coolant

temperature: 80

−

°C

• Lamps, electric

cooling fan and all
accessories: OFF

• Transmission:

Neutral

Idle operation

− 26%

−

2,500 r/min

− 26%

Excessive
acceleration

According to
acceleration,
volumetric
efficiency is
increases

Injector
driving
time

• Engine coolant

temperature: 80

−

°C

• Lamps, electric

cooling fan and all
accessories: OFF

• Transmission:

Neutral

Idle operation

0.9

− 2.3 ms

−

2,500 r/min

0.5

− 2.5 ms

Excessive
acceleration

Increases

Ignition
advance
value

• Engine coolant

temperature: 80

−

°C

• Lamps, electric

cooling fan and all
accessories: OFF

• Transmission:

Neutral

Idle operation (At
approximately 1
minute passes after
the engine starting
sequence is
completed, and
then the engine is in
the steady state)

− 18°BTDC

−

2,500 r/min

− 40°BTDC

Item
No.

Inspection
item

Inspection condition

Normal
condition

Inspection
procedure
No.

Reference
page

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-338

A/C
compressor
relay

Engine: After
warm-up, idle
operation

A/C switch: OFF

OFF

Procedure
No. 24

P.13B-317

A/C switch: ON
(when the
compressor clutch
is operated)

Oxygen
sensor
(rear)

Engine: After
warm-up, idle
operation

At excessive
acceleration

200

− 800 mV Code No.

P0136

P.13B-78

Stop lamp
switch

Ignition switch: ON

Brake pedal:
Depressed

−

Brake pedal:
Released

OFF

Accelerator
pedal
position
sensor (sub)

Ignition switch: ON

Release the
accelerator pedal

300

− 700 mV Code No.

P2127,
P2128

P.13B-220

P.13B-224

Depress the
accelerator pedal

Increases in
response to
the pedal
depression
stroke

Depress the
accelerator pedal
fully

2,000

− 2,500

Accelerator
pedal
position
sensor
(main)

Ignition switch: ON

Release the
accelerator pedal

800

− 1,200 mV Code No.

P2122,
P2123

P.13B-212

P.13B-217

Depress the
accelerator pedal

Increases in
response to
the pedal
depression
stroke

Depress the
accelerator pedal
fully

4,000

− 4,800

Item
No.

Inspection
item

Inspection condition

Normal
condition

Inspection
procedure
No.

Reference
page

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-339

Throttle
position
sensor
(main)

• Remove the intake

air hose at the
throttle body

• Disconnect the

connector of the
electronic-controlle
d throttle valve

• Connect only

terminals No. 1,
No. 2, No. 3 and
No. 4 between
disconnected
connectors 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-53

P.13B-57

Fully open the
throttle valve with
your finger

4,000

− 4,800

• Engine coolant

temperature: 80

−

°C

• Lamps, electric

cooling fan and all
accessories: OFF

• Transmission:

Neutral

• Engine: Idle

operation

No load

350

− 750 mV

A/C switch :
OFF

→ ON

Voltage rises

Variable
valve timing
phase angle

Idling without load

− 5°CA

−

Running with high load

The angle
advance

Vehicle
speed

Drive 40 km/h

Approximately
40 km/h

Code No.
P0500

P.13B-166

Air flow
sensor

• Engine coolant

temperature: 80

−

°C

• Lamps, electric

cooling fan and all
accessories: OFF

• Transmission:

Neutral

Idle operation

0.3

− 2.3 g/s

−

2,500 r/min

2.1

− 8.1 g/s

Excessive
acceleration

Increases in
response to
acceleration

Item
No.

Inspection
item

Inspection condition

Normal
condition

Inspection
procedure
No.

Reference
page

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-340

Intake air
temperature
sensor

Ignition switch: ON or
engine running

Intake air
temperature:

−20°C

Code No.
P0110

P.13B-38

Intake air
temperature: 0

°C

Intake air
temperature: 20

°C

Intake air
temperature: 40

°C

Intake air
temperature: 80

°C

Engine
coolant
temperature
sensor

Ignition switch: ON or
engine running

Coolant
temperature:

−20°C

Code No.
P0115

P.13B-45

Coolant
temperature: 0

°C

Coolant
temperature: 20

°C

Coolant
temperature: 40

°C

Coolant
temperature: 80

°C

Crank angle
sensor

• Engine: Cranking

• Tachometer:

Connected

Compare engine
speed on
tachometer with the
value displayed on
M.U.T.-III

Matched

−

• Engine: Idle

operation (At
approximately 1
minute later from
when the engine
starting sequence
is completed, the
engine is in the
steady state.)

• Transmission:

Neutral

• A/C switch: OFF

Coolant
temperature:

−20°C

1,350

− 1,550

r/min

Coolant
temperature: 0

°C

1,190

− 1,390

r/min

Coolant
temperature: 20

°C

950

− 1,150

r/min

Coolant
temperature: 40

°C

850

− 1,050

r/min

Coolant
temperature: 85

°C

650

− 850 r/min

Vehicle
speed signal

Drive 40 km/h

Approximately
40 km/h

Code No.
P0500

P.13B-166

Item
No.

Inspection
item

Inspection condition

Normal
condition

Inspection
procedure
No.

Reference
page

Main

Index

Group

TOC

Content .. 751 752 753 754 ..