Mitsubishi Galant 9G. Manual — part 486

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-22

Accelerator pedal
(1) Fully closed
(2) Depressed
(3) Fully open

Data list No.11
(1) 300

− 700 mV

(2) Gradually rises
from (1)
(3) 4,000 mV or
more

TP sensor

−

Group 13A
<2.4L Engine>,
Diagnostic
Trouble Code
Procedures

−

DTCs P0122,
0123: Throttle
Position Sensor
System
(

P.13A-159

,

P.13A-169

).

Group 13B
<3.8L Engine>,
Diagnostic
Trouble Code
Procedures

−

DTCs P0122,
0123: Throttle
Position Sensor
System
(

P.13B-162

,

P.13B-172

).

Brake pedal
(1) Depressed
(2) Released

Data list No.26
(1) ON
(2) OFF

Stoplight
switch

26

Stoplight switch
system
(

P.23A-111

).

3

Ignition switch:
ST
Engine: Stopped

Cranking test with
lever in P or N range

Cranking should be
possible

Cranking

-

Engine does
not crank
(

P.23A-282

).

4

Engine warming
up

Drive for 15 minutes
or more so that the
transmission fluid
temperature
becomes 70

− 80°C

(158

− 176°F)

Data list No.15
Gradually rises to 70
− 80°C (158 −

176

°F)

Transmissi
on fluid
temperatur
e sensor

15,
16

Transmission
fluid
temperature
sensor system
(

P.23A-45

,

P.23A-59

).

5

Engine: Idling
Transmission
range: N

Brake pedal (Retest)
(1) Depressed
(2) Released

Data list No.26
(1) ON
(2) OFF

Stoplight
switch

26

Stoplight switch
system
(

P.23A-111

).

STEP

CONDITION
BEFORE
TEST/OPERATION

TEST/OPERATION

STANDARD

INSPECTION
ITEM

DTC

INSPECTION
PROCEDURE
PAGE

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-23

Accelerator pedal
(1) Fully closed
(2) Depressed

Data list No.21
(1) Engine
tachometer and the
scan tool MB991958
(MUT-III sub
assembly) shows the
same engine speed
(2) Gradually rises
from (1)

Crankshaft
position
sensor

21

Group 13A
<2.4L Engine>,
Diagnostic
Trouble Code
Procedures

−

DTC P0335:
Crank shaft
Position Sensor
System
(

P.13A-548

).

Group 13B
<3.8L Engine>,
Diagnostic
Trouble Code
Procedures

−

DTC P0335:
Crank shaft
Position Sensor
System
(

P.13B-604

).

Transmission range
(1) N

→ D

(2) N

→ R

Should be no
abnormal shift
shocks
Time delay when
engaging should be
within 2 seconds

Malfunction
when
starting

-

Engine stalls
when moving
selector lever
from N to D or
N to R
(

P.23A-291

).

-

Shift shock
when shifting
from N to D and
long delay
(

P.23A-293

).

-

Shift shock
when shifting
from N to R and
long delay
(

P.23A-296

).

-

Shift shock
when shifting
from N to D, N
to R and long
delay
(

P.23A-299

).

Does not
move

-

Does not move
forward
(

P.23A-285

).

-

Does not move
backward
(

P.23A-287

).

STEP

CONDITION
BEFORE
TEST/OPERATION

TEST/OPERATION

STANDARD

INSPECTION
ITEM

DTC

INSPECTION
PROCEDURE
PAGE

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-24

-

Does not move
(forward or
backward)
(

P.23A-290

).

6

Transmission
range: N
<Vehicles
without sport
mode>, Sport
mode <Vehicles
with sport
mode> (on a flat
and straight
road)

Gear range and
vehicle speed (Each
condition should be
maintained for 10
seconds or more).
(1) Idling in 1st gear
(Vehicle stopped)
(2) Driving at
constant speed of 10
km/h (6.2 mph) in 1st
gear
(3) Driving at
constant speed of 30
km/h (19 mph) in 2nd
gear
(4) Driving at
constant speed of 50
km/h (31 mph) in 3rd
gear
(5) Driving at
constant speed of 60
km/h (37 mph) in 4th
gear

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-revers
e solenoid
valve duty
%

31

Low-reverse
solenoid valve
system
(

P.23A-187

).

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

Underdrive
solenoid
valve duty
%

32

Underdrive
solenoid valve
system
(

P.23A-200

).

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

Second
solenoid
valve duty
%

33

Second
solenoid valve
system
(

P.23A-211

).

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

Overdrive
solenoid
valve duty
%

34

Overdrive
solenoid valve
system
(

P.23A-222

).

Data list No.22
(4) 1,400

− 1,700

r/min

Input shaft
speed
sensor

22

Input shaft
speed sensor
system
(

P.23A-69

).

STEP

CONDITION
BEFORE
TEST/OPERATION

TEST/OPERATION

STANDARD

INSPECTION
ITEM

DTC

INSPECTION
PROCEDURE
PAGE

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-25

Data list No.23
(4) 1,400

− 1,700

r/min

Output
shaft speed
sensor

23

Output shaft
speed sensor
system
(

P.23A-90

).

7

Transmission
range: 3
<Vehicles
without sport
mode>, sport
mode <Vehicles
without sport
mode> (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% to 0%

Torque
converter
clutch
solenoid
valve duty
%

36,
52,
53

Torque
converter clutch
solenoid
system
(

P.23A-233

,

P.23A-258

,

P.23A-263

).

Data list No.52
(2)

−10 to 10 r/min

(3) The value
changes from (2)

Torque
converter
clutch
amount of
slippage

8

Use the 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 throttle
position sensor
output of 1.5 V
(accelerator opening
angle of 25%)
(2)Slowly decelerate
to a stop
(3)Accelerate to 4th
gear at a throttle
position 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-300

).

Does not
shift
according
to
instructions

-

Early or late
shifting in all
gears
(

P.23A-303

).

-

Early or late
shifting in some
gears
(

P.23A-305

).

Does not
shift

-

No diagnostic
trouble code
(

P.23A-307

).

STEP

CONDITION
BEFORE
TEST/OPERATION

TEST/OPERATION

STANDARD

INSPECTION
ITEM

DTC

INSPECTION
PROCEDURE
PAGE