Mitsubishi Grandis. Manual — part 778

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI)

13A-363

Data List Reference Table

M1131152001233

Item
No.

Inspection
item

Inspection condition

Normal
condition

Inspection
procedure
No.

Reference
page

11

Cylinder 1,4
oxygen
sensor
(front)

Engine: After
warm-up (leaner by
deceleration, richer
by acceleration)

Excessive
deceleration from
4,000 r/min

200 mV or less Code No.

P0130

P.13A-57

At excessive
acceleration

600

− 1,000

mV

Engine: After
warm-up (using
oxygen sensor, check
air-fuel ratio as well
as control status by
engine-ECU <M/T>
or engine-A/T-ECU
<A/T>.

Idle operation

400 mV or less
⇔ 600 − 1,000
mV (altered)

2,500 r/min

12

Air flow
sensor *

1

• Engine coolant

temperature: 85

−

95

°C

• Lamps, electric

cooling fan and all
accessories: OFF

• Transmission:

Neutral <M/T>, "P"
range <A/T>

Idle operation

2.0

− 4.0 g/s

−

−

2,500 r/min

6.5

− 12.0 g/s

Acceleration

According to
acceleration,
frequency is
amplified.

13

Intake air
temperature
sensor

Ignition switch: ON or
engine running

Intake air
temperature:
−20°C

−20°C

Code No.
P0110

P.13A-30

Intake air
temperature: 0

°C

0

°C

Intake air
temperature: 20

°C

20

°C

Intake air
temperature: 40

°C

40

°C

Intake air
temperature: 80

°C

80

°C

14

Throttle
position
sensor (sub)
*4

• Remove the intake

air hose at the
throttle body

• Disconnect the

throttle position
sensor, and the
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.13A-135
P.13A-139

Fully open the
throttle valve with
your finger

4,000 mV or
more

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI)

13A-364

16

Power
supply
voltage

Ignition switch: "ON"

System
voltage

Procedure
No. 22

P.13A-321

18

Cranking
signal
(ignition
switch-ST)

Ignition switch: ON

Engine: Stopped

OFF

Procedure
No. 22

P.13A-321

Engine: Cranking

ON

21

Engine
coolant
temperature
sensor

Ignition switch: ON or
engine running

Coolant
temperature:
−20°C

−20°C

Code No.
P0115

P.13A-37

Coolant
temperature: 0

°C

0

°C

Coolant
temperature: 20

°C

20

°C

Coolant
temperature: 40

°C

40

°C

Coolant
temperature: 80

°C

80

°C

22

Crank angle
sensor

• Engine: Cranking

• Tachometer:

Connected

Compare engine
speed on
tachometer with the
value displayed on
MUT-III

Matched

Code No.
P0335

P.13A-157

Engine: Idle
operation

Coolant
temperature:
−20°C

1,280

− 1,480

r/min

Coolant
temperature: 0

°C

1,270

− 1,470

r/min

Coolant
temperature: 20

°C

1,230

− 1,430

r/min

Coolant
temperature: 40

°C

1,140

− 1,340

r/min

Coolant
temperature: 90

°C

600

− 800

r/min

25

Barometric
pressure
sensor

Ignition switch: ON

Altitude: 0m

101 kPa

−

−

Altitude: 600m

95 kPa

Altitude: 1,200m

88 kPa

Altitude: 1,800m

81 kPa

29

Inhibitor
switch
<A/T>

Ignition switch: ON

Selector lever: P or
N

P, N

Procedure
No. 5

P.13A-292

Selector lever: D, 2,
L, or R

D, 2, L, R

Item
No.

Inspection
item

Inspection condition

Normal
condition

Inspection
procedure
No.

Reference
page

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI)

13A-365

37

Volumetric
efficiency

• Engine coolant

temperature: 85

−

95

°C

• Lamps, electric

cooling fan and all
accessories: OFF

• Transmission:

Neutral <M/T>, "P"
range <A/T>

Idle operation

15

− 35 %

−

−

2,500 r/min

15

− 35 %

Excessive
acceleration

According to
acceleration,
volumetric
efficiency is
increased.

39

Cylinder 2,3
oxygen
sensor
(front)

Engine: After
warm-up (leaner by
deceleration, richer
acceleration)

Excessive
deceleration from
4,000 r/m

200 mV or less Code No.

P0150

P.13A-82

At excessive
acceleration

600

− 1,000

ms

Engine: After
warm-up (using
oxygen sensor, check
air-fuel ratio as well
as control status by
engine-ECU

Idle operation

400 mV or less
⇔ 600 − 1,000
mV (altered)

2,500 r/min

41

Injectors*

3

• Engine coolant

temperature: 80

−

95

°C

• Lamps, electric

cooling fan and all
accessories: OFF

• Transmission:

Neutral <M/T>, "P"
range <A/T>

Idle operation

2.0

− 3.2 ms

−

−

2,500 r/min

1.7

− 2.9 ms

Excessive
acceleration

Increased

44

Ignition
advance

• Engine: After

warm-up

• Install timing light

(for use to
measure actual
ignition timing)

Idle operation

2

− 18°BTDC

Procedure
No. 26

P.13A-355

2,500 r/min

26

− 46°BTDC

49

A/C relay

Engine: After
warm-up, idle
operation after
warm-up

A/C switch: OFF

OFF

Procedure
No. 25

P.13A-347

A/C
switch
: ON

A/C
compressor
is not driven

OFF

A/C
compressor
is driven

ON

59

Cylinder 1,4
Oxygen
Sensor
(rear)

Engine: After
warm-up

At excessive
acceleration (during
the increase in the
engine speed)

0 mV or less
⇔ 600 − 1,000
mV (altered)

Code No.
P0136

P.13A-69

Item
No.

Inspection
item

Inspection condition

Normal
condition

Inspection
procedure
No.

Reference
page

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI)

13A-366

67

Stop lamp
switch

Ignition switch: ON

Brake pedal:
Depressed

OFF

−

−

Brake pedal:
Released

ON

68

EGR valve

• Engine coolant

temperature: 85

−

95

°C

• Lights and all

accessories: OFF

• Transmission:

Neutral <M/T>, "P"
range <A/T>

Idling

3 STEP

Code No.
P0403

P.13A-176

2,500 r/min

3

− 22 STEP

69

Cylinder 2,3
oxygen
sensor
(rear)

Engine: After
warm-up

At excessive
acceleration (during
the increase in the
engine speed)

0 mV or less
⇔ 600 − 1,000
mV (altered)

Code No.
P0156

P.13A-95

77

Accelerator
pedal
position
sensor (sub)

Ignition switch: ON

Release the
accelerator pedal

400

− 1,000

mV

Code No.
P2127,
P2128

P.13A-256
P.13A-261

Depress the
accelerator pedal
gradually

Increases in
response to
the pedal
depression
stroke

Depress the
accelerator pedal
fully

3,600 mV or
more

78

Accelerator
pedal
position
sensor
(main)

Ignition switch: ON

Release the
accelerator pedal

800

− 1,200

mV

Code No.
P2122,
P2123

P.13A-248
P.13A-253

Depress the
accelerator pedal
gradually

Increases in
response to
the pedal
depression
stroke

Depress the
accelerator pedal
fully

4,000 mV or
more

Item
No.

Inspection
item

Inspection condition

Normal
condition

Inspection
procedure
No.

Reference
page