Mitsubishi Pajero Pinin. Manual — part 52

GDI –

Troubleshooting

13A-74

Item
No.

Refer-
ence
page

Inspection
procedure
No.

Normal condition

Requirements

Check items

41

Injector drive
time *

2

D

Engine coolant
temperature: 80
– 95

_

C

L

l

t i

Idling

0.5 – 0.7 ms*

1

Code
No.41

13A-25

D

Lamps, electric
cooling fan and
all accessories:
OFF

2,500 r/min

0.4 – 0.8 ms

OFF

D

Transmission:
Neutral (A/T: P
range)

Sudden racing

Increases

44

Ignition
advance

D

Engine: After
warm-up

Idling

12 – 20

_

BTDC *

2

Code
No.44

13A-27

advance

warm u

D

Set a timing
light.

2,500 r/min

20 – 40

_

BTDC

No.44

49

A/C relay

Engine: After warm-
up, idling

A/C switch: OFF

OFF (compressor
clutch is not oper-
ating)

Procedure
No.32

13A-69

A/C switch: ON

ON (compressor
clutch is operating)

66

Brake vacuum
sensor

D

Engine coolant
temperature: 80
– 95

_

C

D

Lamps, electric
cooling fan and
all accessories:
OFF

D

Transmission:
Neutral
(A/T: P range)

Stop the engine
from idling speed,
and then depress
the brake pedal
several times with
the ignition switch
on.

Displayed pres-
sure increases.

Code
No.66

13A-32

67

Stop lamp
switch

Ignition switch: ON

Brake pedal:
Depressed

OFF

Procedure
No.33

13A-70

Brake pedal:
Released

ON

68

EGR valve

D

Engine coolant
temperature: 80
– 95

_

C

D

Lamps, electric
cooling fan and

Idling

0 – 15 STEP

Procedure
No.29

13A-67

cooling fan and
all accessories:
OFF

D

Transmission:
Neutral
(A/T: P range)

2,500 r/min

0 – 10 STEP

GDI –

Troubleshooting

13A-75

Item
No.

Refer-
ence
page

Inspection
procedure
No.

Normal condition

Requirements

Check items

74

Fuel pressure
sensor

D

Engine coolant
temperature: 80
– 95

_

C

D

Lamps, electric
cooling fan and
all accessories:
OFF

D

Transmission:
Neutral
(A/T: P range)

After 3 minutes
have passed at
idling condition

4 – 6.9 MPa

Code
No.56

13A-29

77

Accelerator
pedal position
sensor

(2nd

Ignition switch: ON

Release the accel-
erator pedal.

700 – 1,400 mV

Code
No.77

13A-33

sensor

(2nd

channel)

Depress the accel-
erator pedal gradu-
ally.

Increases in re-
sponse to the ped-
al depression
stroke.

Depress the accel-
erator pedal fully.

4,100 mV or more

78

Accelerator
pedal position
sensor

Ignition switch: ON

Release the accel-
erator pedal.

935 – 1,135 mV

Code
No.78

13A-34

sensor
(1st channel)*

3

Depress the accel-
erator pedal gradu-
ally.

Increases in re-
sponse to pedal
depression stroke.

Depress the accel-
erator pedal fully.

4,100 mV or more

79

Throttle posi-
tion sensor (1st
channel)

D

Engine coolant
temperature: 80
– 95

_

C

Release the accel-
erator pedal.

450 – 800 mV

Code
No.79

13A-35

channel)

– 95

_

C

D

Ignition switch:
ON (Engine
stopped)

Depress the accel-
erator pedal gradu-
ally.

Increases in re-
sponse to pedal
depression stroke.

Depress the accel-
erator pedal fully.

3,900 – 4,900 mV

Engine: After warm-
up idling

No load

450 – 1,000 mV

up, idling

A/C switch: OFF

→

ON

Increases by 100 –
600 mV.

Selector lever: N

→

D range

Increases by 0 –
200 mV.

99

Fuel injection
mode

Engine: After warm
up

Idling (for several
minutes after en-
gine start)

Lean compression

–

–

2,500 r/min

Stoichio metric
feedback

Sudden racing after
idle position

Open loop

GDI –

Troubleshooting

13A-76

ACTUATOR TEST REFERENCE TABLE

Item
No.

Inspection
item

Drive contents

Inspection contents

Normal condition

Inspection
procedure
No.

Reference
page

01

Injectors

Cut fuel to No. 1
injector

Engine:
After having
warmed up/Engine

Idling condition
becomes different
(becomes unsta-

Code No.
41

13A-25

02

Cut fuel to No. 2
injector

warmed up/Engine
is idling
(Cut the fuel supply
to each injector in

(becomes unsta-
ble).

03

Cut fuel to No. 3
injector

to each injector in
turn and check
cylinders which
don’t affect idling )

04

Cut fuel to No. 4
injector

don’t affect idling.)

07

Fuel pump
(low pressure)

Fuel pump
operates and
fuel is recirculated.

Ignition switch: ON

Sound of opera-
tion is heard.

Procedure
No. 28

13A-66

08

Purge
control
solenoid valve

Solenoid valve
turns from OFF to
ON.

Ignition switch: ON

Sound of opera-
tion can be heard
when solenoid
valve is
driven.

Procedure
No. 30

13A-68

17

Basic ignition
timing

Set the engine-
ECU to ignition
timing adjustment
mode

Engine: Idling
Timing light is set

5

_

BTDC

–

–

21

Fan controller

Drive the fan motor

Ignition switch: ON

The fan motor
operates

Procedure
No.20

13A-60

34

Electronic-
controlled
throttle valve
system

Close the throttle
valve fully

Ignition switch: ON

Operation sound
can be heard

Code
No.91

13A-36

GDI –

Troubleshooting

GDI –

Troubleshooting

13A-77

CHECK AT THE ENGINE-ECU TERMINALS

TERMINAL VOLTAGE CHECK CHART

Engine-ECU Connector Terminal Arrangement

Terminal
No.

Check item

Check requirements (engine condition)

Normal condition

1

No.1 injector

Engine: Warm up, and then depress the
accelerator pedal suddenly from the idle speed

Decreases slightly for
short time from 9 – 13 V

9

No.2 injector

accelerator pedal suddenly from the idle speed.

short time from 9 – 13 V.

24

No.3 injector

2

No.4 injector

3

No.1 ignition coil

Engine: 3,000 r/min

0.1 – 2.0 V

13

No.2 ignition coil

12

No.3 ignition coil

4

No.4 ignition coil

6

EGR valve (C)

Ignition switch: Immediately after turning ON

5 – 8 V (fluctuates for
approx three seconds)

5

EGR valve (D)

approx. three seconds)

34

EGR valve (A)

32

EGR valve (B)

8

Alternator G terminal

D

Engine: Warm up, and then idling

D

Radiator fan: not operating

D

Headlamp: OFF

→

ON

D

Stop lamp: OFF

→

ON

D

Rear defogger switch: OFF

→

ON

Voltage increases by
0.2 – 3.5 V

14

GDI ECO indicator
lamp

Engine: idling

0 – 3 V

lamp

Engine: Depress the accelerator pedal suddenly
from the idle speed.

System voltage

16

Purge control solenoid
valve

D

Engine coolant tem-
perature:

Engine: stopped

System voltage

valve

perature:
80 – 95

°

C

D

Ignition switch:
ON

Engine: Start the
engine, and then
increase engine speed
up to 3,500 r/min.

Voltage decreases.

18

Fan controller

Radiator and condenser fans are not operating.

0 – 0.3 V

Radiator and condenser fans are operating.

0.7 V or more

20

A/C relay

D

Engine: idling

D

A/C switch: OFF

→

ON

(Compressor is operating)

System voltage, or
changes from momentari-
ly 6 V or more to 0 – 3 V