Mitsubishi Montero (2002-2004). Manual — part 873

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION DIAGNOSIS

23Ab-33

SYMPTOM CHART <A/T FAULTY OPERATION PREVENTION MACHANISM>

M1232001800264

DATA LIST REFERENCE TABLE

M1231109100100

Shift switch assembly system

17

P.23Ad-48

4LLc detection switch assembly system

18

P.23Ad-67

SYMPTOM

INSPECTION
PROCEDURE

REFERENCE
PAGE

Selector lever can be moved from "P" to "R" position without depressing
brake pedal when ignition key is at any position other than "LOCK"
(OFF) position.

1

P.23Ad-78

Selector lever cannot be moved from "P" to "R" position with brake
pedal depressed when ignition key is at any position other than "LOCK"
(OFF) position.

2

P.23Ad-78

Selector lever can be moved from "P" to "R" position with brake pedal
depressed when ignition key is at "LOCK" (OFF) position.

3

P.23Ad-80

Selector lever cannot be moved from "P" to "R" position smoothly.

4

P.23Ad-80

Selector lever cannot be moved from "P" to "R" position.

5

P.23Ad-81

Ignition key cannot be turned to "LOCK" (OFF) position when selector
lever is at "P" position.

6

P.23Ad-82

Ignition key can be turned to "LOCK" (OFF) position when selector lever
is at any position other than "P" position.

7

P.23Ad-83

MUT-II SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION ITEM INSPECTION REQUIREMENT

NORMAL
CONDITION

2ND SOL
DUTY

33

Second solenoid
valve duty %

Transmission
range: Sport mode

Driving at constant
speed of 10 km/h
(6.2 mph) in 1st gear

100 %

Transmission
range: Sport mode

Driving at constant
speed of 30 km/h (19
mph) in 2nd gear

0 %

Transmission
range: Sport mode

Driving at constant
speed of 50 km/h (31
mph) in 3rd gear

100 %

Transmission
range: Sport mode

Driving at constant
speed of 50 km/h (31
mph) in 4th gear

100 %

Transmission
range: Sport mode

Driving at constant
speed of 70 km/h (43
mph) in 5th gear

0 %

A/T CONT
RLY

54

A/T control relay
output voltage

Ignition switch: ON

Battery positive
voltage

CKP
SENSOR

21

Crankshaft position
sensor

Engine: Idling
(after the worming
up)
Transmission
range: P

Accelerator pedal:
Fully closed

600

− 900 r/min

Accelerator pedal:
Depressed

Gradually rises
from the above
value

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION DIAGNOSIS

23Ab-34

DUAL
PRESS SW

65

Dual pressure switch Engine: Idling

Transmission
range: P, N

A/C switch: ON
(While the A/C
compressor is in
operation)

ON

A/C switch: OFF

OFF

ENGINE
LOAD

57

Engine load
(volumetric
efficiency)

Engine: Idling
Transmission
range: N

Accelerator pedal:
fully closed

→

depressed

Data changes

ISS SENSOR 22

Input shaft speed
sensor

Gear range: 4th
gear

Driving at constant
speed of 50 km/h (31
mph)

1,400

− 1,700 r/

min

L/R SOL
DUTY

31

Low-reverse
solenoid valve duty
%

Transmission
range: Sport mode

Driving at constant
speed of 10 km/h
(6.2 mph) in 1st gear

0 %

Transmission
range: Sport mode

Driving at constant
speed of 30 km/h (19
mph) in 2nd gear

100 %

Transmission
range: Sport mode

Driving at constant
speed of 50 km/h (31
mph) in 3rd gear

100 %

Transmission
range: Sport mode

Driving at constant
speed of 50 km/h (31
mph) in 4th gear

0 %

Transmission
range: Sport mode

Driving at constant
speed of 70 km/h (43
mph) in 5th gear

0 %

O/D SOL
DUTY

34

Overdrive solenoid
valve duty %

Transmission
range: Sport mode

Driving at constant
speed of 10 km/h
(6.2 mph) in 1st gear

100 %

Transmission
range: Sport mode

Driving at constant
speed of 30 km/h (19
mph) in 2nd gear

100 %

Transmission
range: Sport mode

Driving at constant
speed of 50 km/h (31
mph) in 3rd gear

0 %

Transmission
range: Sport mode

Driving at constant
speed of 50 km/h (31
mph) in 4th gear

0 %

Transmission
range: Sport mode

Driving at constant
speed of 70 km/h (43
mph) in 5th gear

0 %

OD OFF
SIGNAL

66

Overdrive off signal
(Auto-cruise ECM
signal)

While auto-cruise
is engaged

Level road

OFF

Uphill grade

ON

MUT-II SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION ITEM INSPECTION REQUIREMENT

NORMAL
CONDITION

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION DIAGNOSIS

23Ab-35

OSS
SENSOR

23

Output shaft speed
sensor

Gear range: 4th
gear

Driving at constant
speed of 50 km/h (31
mph)

1,400

− 1,700 r/

min

TR SWITCH

61

Transmission range
switch

Ignition switch: ON Transmission range:

P

P

Transmission range:
R

R

Transmission range:
N

N

Transmission range:
D

D

SELECT SW 67

Select switch

Ignition switch: ON Transmission range:

D

OFF

Selector lever
operation: Select
sport mode

ON

Selector lever
operation: Upshift
and hold the selector
lever

ON

Selector lever
operation: Downshift
and hold the selector
lever

ON

SHIFT POS

63

Shift position

Transmission
range: Sport mode

Driving at constant
speed of 10 km/h
(6.2 mph) in 1st gear

1st

Transmission
range: Sport mode

Driving at constant
speed of 30 km/h (19
mph) in 2nd gear

2nd

Transmission
range: Sport mode

Driving at constant
speed of 50 km/h (31
mph) in 3rd gear

3rd

Transmission
range: Sport mode

Driving at constant
speed of 50 km/h (31
mph) in 4th gear

4th

Transmission
range: Sport mode

Driving at constant
speed of 70 km/h (43
mph) in 5th gear

5th

Transmission
range: R

Driving at constant
speed of 5 km/h (3.1
mph) in reverse gear

REV

Transmission range: P or N

PN

MUT-II SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION ITEM INSPECTION REQUIREMENT

NORMAL
CONDITION

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION DIAGNOSIS

23Ab-36

SHIFT SW
DOWN

69

Shift switch (Down)

Ignition switch: ON Transmission range:

D

OFF

Selector lever
operation: Select
sport mode

OFF

Selector lever
operation: Upshift
and hold the selector
lever

OFF

Selector lever
operation: Downshift
and hold the selector
lever

ON

SHIFT SW
UP

68

Shift switch (Up)

Ignition switch: ON Transmission range:

D

OFF

Selector lever
operation: Select
sport mode

OFF

Selector lever
operation: Upshift
and hold the selector
lever

ON

Selector lever
operation: Downshift
and hold the selector
lever

OFF

STOPLIGHT
SW

26

Stoplight switch

Ignition switch: ON Brake pedal:

Depressed

ON

Brake pedal:
Released

OFF

TCC
SLIPPAGE

52

Torque converter
clutch amount of
slippage

Warmed up
Transmission
range: Sport mode
Driving at speed of
80 km/h (50 mph)
in 4th gear

Driving at constant
speed of 80 km/h (50
mph)

−10 to 10 r/min

Release accelerator
pedal (at less than
50 km/h (31 mph))

The value should
fluctuate when the
accelerator is
released

TCC SOL
DUTY

36

Torque converter
clutch solenoid valve
duty %

Warmed up
Transmission
range: Sport mode
Driving at speed of
80 km/h (50 mph)
in 4th gear

Driving at constant
speed of 80 km/h (50
mph)

70

− 90 %

Release accelerator
pedal (at less than
50 km/h (31 mph))

70

− 90 % → 0 %

Decreases
gradually as the
vehicle speed
decreases

MUT-II SCAN
TOOL
DISPLAY

ITEM
NO.

INSPECTION ITEM INSPECTION REQUIREMENT

NORMAL
CONDITION