Mitsubishi Montero Sport (2004+). Manual — part 614

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-21

6

Transmission
range: N (on a
flat and straight
road.)

Transmission
range and vehicle
speed (Each
condition should
be maintained for
10 seconds or
more.)
(1) Idling in L
position (Vehicle
stopped)
(2) Driving at
constant speed of
10 km/h (6.2 mph)
in L position
(3) Driving at
constant speed of
30 km/h (19 mph)
in 2 position
(4) Driving at
constant speed of
50 km/h (31 mph)
in 3 position
(5) Driving at
constant speed of
50 km/h (31 mph)
in D position

Data list No.63
(2) 1st, (3) 2nd, (4)
3rd, (5) 4th

Shift position

−

−

Data list No.31
(2) 0%, (3) 100%,
(4) 100%, (5)
100%

Low-reverse
solenoid valve
duty %

31

Low-reverse
solenoid valve
system
(

P.23A-224

)

Data list No.32
(2) 0%, (3) 0%, (4)
0%, (5) 100%

Underdrive
solenoid valve
duty %

32

Underdrive
solenoid valve
system
(

P.23A-240

)

Data list No.33
(2)100%, (3) 0%,
(4) 100%, (5) 0%

Second solenoid
valve duty %

33

Second
solenoid valve
system
(

P.23A-254

)

Data list No.34
(2) 100%, (3)
100%, (4) 0%, (5)
0%

Overdrive
solenoid valve
duty %

34

Overdrive
solenoid valve
system
(

P.23A-268

)

Data list No.29
(1) 0 km/h (0 mph)
(4) 50 km/h (31
mph)

Vehicle speed
sensor

29

Vehicle speed
sensor system
(

P.23A-215

)

STEP CONDITION

BEFORE TEST/
OPERATION

TEST/
OPERATION

STANDARD

INSPECTION
ITEM

DTC INSPECTION

PROCEDURE
PAGE

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-22

6

Data list No.22
(4) 1,400

− 1,700

r/min

Input shaft
speed sensor

22

Input shaft
speed sensor
system
(

P.23A-69

)

Data list No.23
(4) 1,400

− 1,700

r/min

Output shaft
speed sensor

23

Output shaft
speed sensor
system
(

P.23A-91

)

7

Transmission
range: 3 (on a
flat and straight
road.)

Transmission
range and vehicle
speed
(1) Driving at
speed of 60 km/h
(37 mph) in 3rd
gear
(2) Driving at
constant speed of
60 km/h (37 mph)
(3) Release
accelerator pedal
(Speed under 50
km/h (31 mph))

Data list No.36
(2) 70

− 99.6%

(3) 70

− 99.6% →

0%

Torque
converter clutch
solenoid valve
duty %

36,
52,
53

Torque
converter clutch
solenoid system
(

P.23A-282

,

P.23A-310

,

P.23A-315

)

Data list No.52
(2)

−10 to 10 r/min

(3) The value
changes from (2)

Torque
converter clutch
amount of
slippage

8

Use scan tool
MB991958
(MUT-III sub
assembly) to
stop the
INVECS-II
function.
Transmission
range: D (on a
flat and straight
road.)

(1) Accelerate to
4th gear at a TP
sensor output of
1.5 V (accelerator
opening angle of
30%).
(2) Slowly
decelerate to a
stop.
(3) Accelerate to
4th gear at a TP
sensor output of
2.5 V (accelerator
opening angle of
50%).

Data list No.11, 23
The shifting points
correspond with
the scan tool
display and the TP
sensor voltage
(opening angle)
and output shaft
speed, which are
shown in the
standard shift
pattern.

Malfunction
when shifting

−

Shift shock and
slipping
(

P.23A-362

)

Does not shift
according to
instructions

−

Early or late
shifting in all
gears
(

P.23A-364

)

−

Early or late
shifting in all
gears
(

P.23A-367

)

STEP CONDITION

BEFORE TEST/
OPERATION

TEST/
OPERATION

STANDARD

INSPECTION
ITEM

DTC INSPECTION

PROCEDURE
PAGE

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-23

8

Does not shift

−

No diagnostic
trouble code
(

P.23A-369

)

22

Input shaft
speed sensor
system
(

P.23A-69

)

23

Output shaft
speed sensor
system
(

P.23A-91

)

8

Use scan tool
MB991958
(MUT-III sub
assembly) to
stop the
INVECS-II
function.
Transmission
range: D (on a
flat and straight
road.)

(1) Accelerator
from 1st gear to
4th gear.
(2) While driving at
60 km/h (37 mph)
in 4th gear, down
shift to 3 range.
(3) While driving at
40 km/h (25 mph)
in 3rd gear, down
shift to 2 range.
(4) While driving at
20 km/h (12 mph)
in 2nd gear, down
shift to L range.

Data list No.63
(1) 1st

→ 2nd →

3rd

→ 4th

(2) 4th

→ 3rd

(3) 3rd

→ 2nd

(4) 2nd

→ 1st

Does not shift
from 1 to 2 or 2
to 1

31

Low-reverse
solenoid valve
system
(

P.23A-224

)

33

Second
solenoid valve
system
(

P.23A-254

)

41

1st gear
incorrect ratio
(

P.23A-297

)

42

2nd gear
incorrect ratio
(

P.23A-297

)

Does not shift
from 2 to 3 or 3
to 2

33

Second
solenoid valve
system
(

P.23A-254

)

34

Overdrive
solenoid valve
system
(

P.23A-268

)

42

2nd gear
incorrect ratio
(

P.23A-297

)

STEP CONDITION

BEFORE TEST/
OPERATION

TEST/
OPERATION

STANDARD

INSPECTION
ITEM

DTC INSPECTION

PROCEDURE
PAGE

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-24

8

43

3rd gear
incorrect ratio
(

P.23A-297

)

Does not shift
from 3 to 4 or 4
to 3

32

Underdrive
solenoid valve
system
(

P.23A-240

)

33

Second
solenoid valve
system
(

P.23A-254

)

43

3rd gear
incorrect ratio
(

P.23A-297

)

44

4th gear
incorrect ratio
(

P.23A-297

)

9

Transmission
range: N (on a
flat and straight
road.)

Monitor data list
No.22 and No.23
with the scan tool
MB991958
(MUT-III sub
assembly).
(1) Move selector
lever to R range,
drive at constant
speed of 10 km/h
(6.2 mph).

The ratio between
data list No.22 and
No.23 should be
the same as the
gear ratio when
reversing.

Does not match 22

Input shaft
speed sensor
system
(

P.23A-69

)

23

Output shaft
speed sensor
system
(

P.23A-91

)

46

Reverse gear
incorrect ratio
(

P.23A-297

)

STEP CONDITION

BEFORE TEST/
OPERATION

TEST/
OPERATION

STANDARD

INSPECTION
ITEM

DTC INSPECTION

PROCEDURE
PAGE