Content .. 108 109 110 111 ..

Mitsubishi Space Star. Manual - part 110

AUTOMATIC TRANSMISSION –

Troubleshooting <A/T>

23-7

No.

Inspection
procedure page
if there is an
abnormality

Diag-
nosis
code
No.

Check item

Judgement value

Test and operation

State prior to test
and operation

Engine: Idling
Selector lever
position: N

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

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

Stop lamp
switch

Stop lamp switch
system (23-15)

A/C switch
(1) ON
(2) OFF

Data list No. 65
(1) ON
(2) OFF

Dual pressure
switch

–

Dual pressure
switch system
(23-30)

Accelerator pedal
(1) Released
(2) Half depressed

Data list No. 21
(1) 550 – 850 r/min
Gradually rises
from (1)

Crank angle
sensor

Crank angle
sensor system
(23-12)

Selector lever
position
(1) N

→

Should be no
abnormal shifting
shocks

Malfunction
when starting

–

Engine stalling
during shifting
(23-23)

(1) N

→

(2) N

→

Time lag should be
within 2 seconds

–

Shocks when
changing from N
to D and large
time lag (23-23)

–

Shocks when
changing from N
to R and large
time lag (23-24)

–

Shocks when
changing from N
to D,N to R and
large time lag
(23-25)

Driving
impossible

–

Does not move
forward (23-21)

–

Does not
reverse (23-22)

–

Does not move
(forward or
reverse) (23-22)

AUTOMATIC TRANSMISSION –

Troubleshooting <A/T>

23-8

No.

State prior to test
and operation

Test and operation

Judgement value

Check item

Diag-
nosis
code
No.

Inspection
procedure page
if there is an
abnormality

Selector lever
position: Sports
mode
(Carry out on a

Selector lever
position and
vehicle speed
(1) Idli

1 t

Data list No. 63
(2) 1st, (4) 3rd, (3)
2nd, (5) 4th

Shift condition

–

(Carry out on a
flat and straight
road.)

(1) Idling in 1st

(Vehicle
stopped)

(2) Driving at

constant speed

Data list No. 31
(2) 0 %, (4) 100 %,
(3) 100 %, (5) 100
%

Low and reverse
solenoid valve

Low and reverse
solenoid valve
system (23-15)

constant s eed
of 10 km/h in
1st

(3) Driving at

constant speed

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

Underdrive
solenoid valve

Underdrive
solenoid valve
system (23-15)

constant speed
of 30 km/h in
2nd

(4) Driving at

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

Second
solenoid valve

Second solenoid
valve system
(23-15)

( )

50 km/h in
3rd with accel-
erator fully
closed

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

Overdrive
solenoid valve

Overdrive
solenoid valve
system (23-15)

closed

(5) Driving at

constant speed
of 50 km/h in
4th

Data list No. 29
(1) 0 km/h
(4) 50 km/h

Vehicle speed
sensor

–

Vehicle speed
sensor system
(23-31)

4th
(Each
condition
should be

Data list No. 22
(4) 1,800 – 2,100

r/min

Input shaft
speed sensor

Input shaft speed
sensor system
(23-13)

should be
maintained for
10 seconds or
more.)

Data list No. 23
(4) 1,800 – 2,100

r/min

Output shaft
speed sensor

Output shaft
speed sensor
system (23-14)

Selector lever
position: Sports
mode
(Carry out on a
flat and straight
road )

Selector lever
position and
vehicle speed
(1) Release the ac-

celerator pedal
fully while driv

Data list No. 36
(1) 0 %
(2) Approx. 70 – 90

Damper clutch
control solenoid
valve

36
52

Damper clutch
control solenoid
valve system
(23-16)

road.)

fully while driv-
ing at 50 km/h
in 3rd gear.

(2) Driving at

constant speed
of 50 km/h in
3rd gear.

Data list No. 52
(1) Approx.

100 – 300 r/min

(2) Approx.

0 – 10 r/min

AUTOMATIC TRANSMISSION –

Troubleshooting <A/T>

23-9

No.

State prior to test
and operation

Test and operation

Judgement value

Check item

Diag-
nosis
code
No.

Inspection
procedure page
if there is an
abnormality

Use the MUT-

stop the INVECS-

function.

Monitor data list
No. 11, 23, and 63
with the MUT-

For (1), (2) and (3),
the reading should
be the same as the

Malfunction
when shifting

–

Shocks and
running up
(23-25)

Selector lever
position: D

(1) Accelerate to

4th gear at a

specified output
shaft speed and no

Displaced

hifti

i t

–

All points (23-26)

position: D
(Carry out on a flat
and straight road.)

4th gear at a
throttle position
sensor output

shaft speed and no
abnormal shocks
should occur.

shifting points

–

Some points
(23-27)

and straight road.)

sensor out ut
of 1.5V
(accelerator
opening angle

should occur.
For (4), (5) and (6),
downshifting

Does not shift

–

No diagnosis
code (23-27)

opening angle
of 30 %).

(2) Gently

decelerate to a

should occur
immediately
after the shifting
operation is made.

Input shaft
speed sensor
system (23-13)

decelerate to a
standstill.

(3) Accelerate to

4th gear at a
throttle position

o eration is made.

Output shaft
speed sensor
system (23-13)

throttle position
sensor output
of 2.5 V
(accelerator

Does not shift
from 1 to 2 or 2
to 1

Low and reverse
solenoid valve
system (23-15)

(accelerator
opening angle
of 50%).

(4) While driving at

60 k /h i

4th

Second
solenoid valve
system (23-15)

( )

60 km/h in 4th
gear, shift
down to 3rd

(5) While driving at

1st gear ratio is
not specified
(23-17)

(5) While driving at

40 km/h in 3rd
gear, shift
down to 2nd

(6) Whil d i i

2nd gear ratio is
not specified
(23-17)

(6) While driving at

20 km/h in 2nd
gear, shift
down to 1st

Does not shift
from 2 to 3 or 3
to 2

Second
solenoid valve
system (23-15)

down to 1st

Overdrive
solenoid valve
system (23-15)

2nd gear ratio is
not specified
(23-17)

3rd gear ratio is
not specified
(23-17)

Does not shift
from 3 to 4 or 4
to 3

Underdrive
solenoid valve
system (23-15)

Second
solenoid valve
system (23-15)

3rd gear ratio is
not specified
(23-17)

4th gear ratio is
not specified
(23-17)

AUTOMATIC TRANSMISSION –

Troubleshooting <A/T>

23-10

No.

State prior to test
and operation

Test and operation

Judgement value

Check item

Diag-
nosis
code
No.

Inspection
procedure page
if there is an
abnormality

Selector lever
position: N
(Carry out on a

Monitor data list
No. 22
and No. 23 with the
MUT

The ratio between
data list No. 22 and
No. 23 should be
th

Does not shift

Input shaft
speed sensor
system (23-13)

(Ca y out o a
flat and straight
road.)

MUT-

(1) Move selector

lever to
R range drive

the same as the
gear ratio when
reversing.

Output shaft
speed sensor
system (23-13)

R range, drive
at constant
speed of
10 km/h.

Reverse gear
ratio is not
specified (23-17)

SHIFT PATTERN

UPSHIFT PATTERN

Throttle opening %

Thick line: Standard shift pattern

100

1,000

2,000

3,000

4,000

5,000

6,000

7,000

Output shaft speed r/min

100

150

Vehicle speed km/h

→

movement
range

→

movement
range

200

DOWNSHIFT PATTERN

Throttle opening %

Thick line: Standard shift pattern

100

1,000

2,000

3,000

4,000

5,000

6,000

7,000

Output shaft speed r/min

100

150

Vehicle speed km/h

→

movement
range

→

movement
range

200

(Sports mode)

Content .. 108 109 110 111 ..