Mitsubishi Grandis. Manual — part 836

TROUBLESHOOTING <A/T>

AUTOMATIC TRANSMISSION (FF)

23A-11

5

Engine: idle
Selector lever
position: N

Brake pedal (re-test)

(1) Depressed
(2) Released

Data List No.26

(1) ON
(2) OFF

Stop lamp
switch

26

Stop lamp
switch
system

A/Cswitch

(1) ON
(2) OFF

Data List No.65

(1) ON
(2) OFF

A/C
compress
or relay

−

A/C
compressor
relay
system

Accelerator pedal

(1) Fully closed
(2) Depressed

Data List No.0000

(1) The engine

speed displayed
on the tachometer
is identical to the
engine speed
displayed on
MUT-III.

(2) Gradually

increases from
(1)

Crank
angle
sensor

21

Crank
angle
sensor
system

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/opera
tion
conditions

Test/operation

Judgment value

Check
item

Diagnosis
code No.

Inspection
procedure
if there is
an
abnormalit
y

TROUBLESHOOTING <A/T>

AUTOMATIC TRANSMISSION (FF)

23A-12

6

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
30 km/h in 3rd
gear

(5) Driving at

constant speed of
50 km/h 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 %

LR
solenoid
valve duty
%

31

LR solenoid
valve
system

Data List No.32

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

UD
solenoid
valve duty
%

32

UD
solenoid
valve
system

Data List No.33

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

2NDsolen
oid valve
duty %

33

2ND
solenoid
valve
system

Data List No.34

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

OD
solenoid
valve duty
%

34

OD
solenoid
valve
system

Data List No.29

(1) 0 km/h
(4) 50 km/h

Vehicle
speed
signal

−

Vehicle
speed
signal
system

Data List No.0001

(4) 1,600

− 1,900

r/min

Input shaft
speed
sensor

22

Input shaft
speed
sensor
system

Data List No.0002

(4) 1,600

− 1,900

r/min

Output
shaft
speed
sensor

23

Output
shaft speed
sensor
system

Proced
ure

Pre-test/opera
tion
conditions

Test/operation

Judgment value

Check
item

Diagnosis
code No.

Inspection
procedure
if there is
an
abnormalit
y

TROUBLESHOOTING <A/T>

AUTOMATIC TRANSMISSION (FF)

23A-13

7

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

Selector lever
position and vehicle
speed

(1) Driving at

constant speed
60 km/h in 3rd
gear

(2) Driving at 60

km/h in 3rd gear,
then fully close
the accelerator
pedal

Data List No.36

(1) 70

− 99.6 %

(2) 70

− 99.6 % to

0%

DCC
solenoid
valve duty
%

36, 52

DCC
solenoid
valve
system

Data List No.52

(1)

−10 − 10 r/min

(2) The value

changes from (1)

DCC
amount of
slippage

8

Suspends the
INVECS-II
function using
MUT-III
Selector lever
position: D
(Must be done
on a level and
straight road)

(1) Accelerate to 4th

range at a TPS
output of 1.5 V
(opening angle
20%).

(2) Slowly

decelerate and
stop.

(3) Accelerate to 4th

range at a TPS
output of 2.5 V
(opening angle
50%).

Data List No.11,
0002
The shifting points
correspond with the
MUT-III display and
the TPS voltage
(opening angle) and
output shaft speed,
which are described
in the standard shift
pattern.

Problem
during
shifting

−

Shocks,
engine
racing

Incorrect
shift points

−

All points

−

Some
points

No shifting −

No
diagnosis
codes

22

Input shaft
speed
sensor
system

23

Output
shaft speed
sensor
system

Proced
ure

Pre-test/opera
tion
conditions

Test/operation

Judgment value

Check
item

Diagnosis
code No.

Inspection
procedure
if there is
an
abnormalit
y

TROUBLESHOOTING <A/T>

AUTOMATIC TRANSMISSION (FF)

23A-14

8

Suspends the
INVECS-II
function using
MUT-III
Selector lever
position: D
(Must be done
on a level and
straight road)

(1) Accelerate from

1st gear to 4th
gear.

(2) Downshift to 3rd

gear at speed of
50 km/h in 4th
gear.

(3) Downshift to 2nd

gear at speed of
30 km/h in 3rd
gear.

(4) Downshift to 1st

gear at speed of
20 km/h in 2nd
gear.

Data List No.63

(1) 1st

→ 2nd → 3rd

→ 4th

(2) 4th

→ 3rd

(3) 3rd

→ 2nd

(4) 2nd

→ 1st

No shifting
from 1st to
2nd, or no
shifting
from 2nd
to 1st

31

LR solenoid
valve
system

33

2ND
solenoid
valve
system

41

1ST without
completion
of shifting

42

2ND
without
completion
of shifting

No shifting
from 2nd
to 3rd, or
no shifting
from 3rd
to 2nd

33

2ND
solenoid
valve
system

34

OD
solenoid
valve
system

42

2ND
without
completion
of shifting

43

3RD
without
completion
of shifting

No shifting
from 3rd
to 4th, or
no shifting
from 4th to
3rd

32

UD
solenoid
valve
system

33

2ND
solenoid
valve
system

43

3RD
without
completion
of shifting

44

4TH without
completion
of shifting

Proced
ure

Pre-test/opera
tion
conditions

Test/operation

Judgment value

Check
item

Diagnosis
code No.

Inspection
procedure
if there is
an
abnormalit
y