Mitsubishi Galant (2004+). Manual - part 618

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-23

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-283

).

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-46

, 

P.23A-60

).

STEP CONDITION 

BEFORE 
TEST/OPERATION

TEST/OPERATION

STANDARD

INSPECTION 
ITEM

DTC INSPECTION 

PROCEDURE PAGE

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-24

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-112

).

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-542

).

Group 13B <3.8L 
Engine>, 
Diagnostic Trouble 
Code Procedures 
− DTC P0335: 
Crank shaft 
Position Sensor 
System 
(

P.13B-583

).

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

).

-

Does not move 
(forward or 
backward) 
(

P.23A-290

).

STEP CONDITION 

BEFORE 
TEST/OPERATION

TEST/OPERATION

STANDARD

INSPECTION 
ITEM

DTC INSPECTION 

PROCEDURE PAGE

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-25

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-188

).

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-70

).

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 
<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

STEP CONDITION 

BEFORE 
TEST/OPERATION

TEST/OPERATION

STANDARD

INSPECTION 
ITEM

DTC INSPECTION 

PROCEDURE PAGE

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-26

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-306

).

Does not 
shift

-

No diagnostic 
trouble code 
(

P.23A-307

).

22

Input shaft speed 
sensor system 
(

P.23A-70

).

23

Output shaft speed 
sensor system 
(

P.23A-91

).

STEP CONDITION 

BEFORE 
TEST/OPERATION

TEST/OPERATION

STANDARD

INSPECTION 
ITEM

DTC INSPECTION 

PROCEDURE PAGE