Mitsubishi L200. Manual — part 278

TROUBLESHOOTING

AUTOMATIC TRANSMISSION

23A-19

3

Ignition switch:
START

Starting test at P or
N position

Starting should be
possible

Starting
possible/
not
possible

−

Starting not
possible

4

Driving after
engine has
warmed up

Drive for 15 minutes
or more until the A/
T fluid temperature
rises to 70

− 80°C.

Data List No.7
Gradually rises to 70
− 80°C

A/T fluid
temperatu
re sensor

P1763,
P1764

A/T fluid
temperature
sensor system

5

Engine: idle
Selector lever
position: N

A/C switch

(1) ON
(2) OFF

Data List No.21

(1) ON
(2) OFF

A/C
compress
or relay

−

A/C
compressor
relay system

Accelerator pedal

(1) Fully closed
(2) Depressed

Data List No.1

(1) The engine

speed displayed
on the tachometer
is identical to the
engine speed
displayed on
M.U.T.-III.

(2) Gradually

increases from (1)

Crank
angle
sensor

−

Refer to
GROUP 13A

−

Troubleshootin
g.

Selector lever
position

(1) N to D
(2) N to R

No abnormal shock
during shifting
Within 2 seconds of
time lag

Malfunctio
n when
starting
off

−

Engine stalls
during shifting

−

N to D shocks,
large time lag

−

N to R shocks,
large time lag

−

N to D, N to R
shocks, large
time lag

Driving
not
possible

−

Does not move
forward

−

Does not
reverse

−

Does not move
(forward or
reverse)

Proced
ure

Pre-test/
operation
conditions

Test/operation

Judgment value

Check
item

Diagnosi
s code
No.

Inspection
procedure if
there is an
abnormality

TROUBLESHOOTING

AUTOMATIC TRANSMISSION

23A-20

6
<4A/T>

Selector lever
position: D
(Must be done
on a level and
straight road.)

Selector lever
position and vehicle
speed (Each
condition should be
maintained for 10
seconds or more.)

(1) Engine idling in

1st gear (vehicle
stopped)

(2) Driving at

constant speed
of 10 km/h in 1st
gear

(3) Driving at

constant speed
of 20 km/h in 2nd
gear

(4) Driving at

constant speed
of 30 km/h in 3rd
gear

(5) Driving at

constant speed
of 40 km/h in 4th
gear

Data List No.11

(2) 1st
(3) 2nd
(4) 3rd
(5) 4th

Shift
position

−

−

Data List No.12

(2) 0%
(3) 100%
(4) 100%
(5) 100%

LR
solenoid
valve duty
%

P1773

LR solenoid
valve system

Data List No.13

(2) 0%
(3) 0%
(4) 0%
(5) 100%

UD
solenoid
valve duty
%

P1774

UD solenoid
valve system

Data List No.14

(2) 100%
(3) 0%
(4) 100%
(5) 0%

2NDsolen
oid valve
duty %

P1775

2ND solenoid
valve system

Data List No.15

(2) 100%
(3) 100%
(4) 0%
(5) 0%

OD
solenoid
valve duty
%

P1776

OD solenoid
valve system

Data List No.5

(4) 1,100

− 1,400 r/

min

Input
shaft
speed
sensor

P1766

Input shaft
speed sensor
system

Data List No.6

(4) 1,100

− 1,400 r/

min

Output
shaft
speed
sensor

P1767

Output shaft
speed sensor
system

Proced
ure

Pre-test/
operation
conditions

Test/operation

Judgment value

Check
item

Diagnosi
s code
No.

Inspection
procedure if
there is an
abnormality

TROUBLESHOOTING

AUTOMATIC TRANSMISSION

23A-21

6
<5A/T>

Selector lever
position: Sport
mode (Must
be done on a
level and
straight road.)

Selector lever
position and vehicle
speed (Each
condition should be
maintained for 10
seconds or more.)

(1) Engine idling in

1st gear (vehicle
stopped)

(2) Driving at

constant speed
of 10 km/h in 1st
gear

(3) Driving at

constant speed
of 20 km/h in 2nd
gear

(4) Driving at

constant speed
of 40 km/h in 3rd
gear

(5) Driving at

constant speed
of 60 km/h in 4th
gear

(6) Driving at

constant speed
of 70 km/h in 5th
gear

Data List No.11

(2) 1st
(3) 2nd
(4) 3rd
(5) 4th
(6) 5th

Shift
position

−

−

Data List No.12

(2) 0%
(3) 100%
(4) 100%
(5) 0%
(6) 0%

LR
solenoid
valve duty
%

P1773

LR solenoid
valve system

Data List No.13

(2) 0%
(3) 0%
(4) 0%
(5) 0%
(6) 100%

UD
solenoid
valve duty
%

P1774

UD solenoid
valve system

Data List No.14

(2) 100%
(3) 0%
(4) 100%
(5) 100%
(6) 0%

2NDsolen
oid valve
duty %

P1775

2ND solenoid
valve system

Data List No.15

(2) 100%
(3) 100%
(4) 0%
(5) 0%
(6) 0%

OD
solenoid
valve duty
%

P1776

OD solenoid
valve system

Data List No.16

(2) 0%
(3) 0%
(4) 0%
(5) 100%
(6) 100%

RED
solenoid
valve duty
%

P1777

Reduction
solenoid valve
system

Data List No.5

(5) 1,600

− 1,900 r/

min

Input
shaft
speed
sensor

P1766

Input shaft
speed sensor
system

Data List No.6

(5) 1,600

− 1,900 r/

min

Output
shaft
speed
sensor

P1767

Output shaft
speed sensor
system

Proced
ure

Pre-test/
operation
conditions

Test/operation

Judgment value

Check
item

Diagnosi
s code
No.

Inspection
procedure if
there is an
abnormality

TROUBLESHOOTING

AUTOMATIC TRANSMISSION

23A-22

7

Selector lever
position: D
(Must be done
on a level and
straight road.)

Selector lever
position and vehicle
speed

(1) Driving at

constant speed
90 km/h in 3rd
gear <4A/T> or
100 km/h in 4th
gear <5A/T>

(2) Driving at 90

km/h in 3rd gear
<4A/T> or 100
km/h in 4th gear
<5A/T>, then
fully close the
accelerator pedal

Data List No.17

(1) 70

− 99.6%

(2) 70

− 99.6% to

0%

DCC
solenoid
valve duty
%

P1778,
P1786,
P1787

DCC solenoid
valve system

Data List No.10

(1)

−10 to 10 r/min

(2) The value

changes from (1)

DCC
amount of
slippage

Proced
ure

Pre-test/
operation
conditions

Test/operation

Judgment value

Check
item

Diagnosi
s code
No.

Inspection
procedure if
there is an
abnormality