Mitsubishi Space Star. Manual - part 109

AUTOMATIC TRANSMISSION – 

Special Tools

23-3

Tool

Use

Name

Number

MD998330 
(including
MD998331)

Oil pressure gauge
(2,942 kPa)

Measurement of oil pressure

MD998332

Adapter

MD998900

Adapter

MB990635 or 
MB991113

Steering linkage 
puller

Ball joint disconnection

MB991610

Oil filter wrench

Removal and installation of automatic trans-
mission oil filter

GENERAL
SERVICE
TOOL
MZ203827

Engine lifter

Supporting the engine assembly during
removal and installation of the transmission

MB991453

Engine hanger 
assembly

Supporting the engine assembly during
removal and installation of the transmission

AUTOMATIC TRANSMISSION – 

Troubleshooting <A/T>

23-4

TROUBLESHOOTING <A/T>

STANDARD FLOW OF DIAGNOSIS TROUBLESHOOTING

Inhibitor switch and APS check

(Refer to P.23-45.)

No diagnosis code
output (no abnormality)

Ask about trouble symptoms.

Check the A/T fluid.

NG

Replace the A/T fluid.

OK

Check the trouble symptoms.

Reading of a diagnosis code

(Refer to P.23-4.)

Communication
with the MUT-

II

is not possible

Inspection procedure check by

trouble symptom

Procedure 1 (Refer to P.23-20.)

Diagnosis code output exists

No diagnosis code
output

Road test (Refer to P.23-6.)

Diagnosis code output
exists

Go to Diagnosis Code List

(Refer to P.23-11.)

No diagnosis code
output (abnormality
exists)

Check for the cause.

Not found

NG

NG

Repair

OK

Go to Trouble Symptom List

(Refer to P.23-19.)

Verification test (road test)

Found

END

Erase of a diagnosis code

(Refer to P.23-4.)

Transient malfunction (Refer to

GROUP 00 – Points to Note for

Transient Malfunctions.)

OK

AUTOMATIC TRANSMISSION – 

Troubleshooting

23-5

DIAGNOSIS FUNCTION

1. N range lamp

The N range lamp flashes at a frequency of approximately
1 Hz if there is an abnormality in any of the items in the
table below which are related to the A/T system.  Check the
diagnosis code output if the N range lamp is flashing at a
frequency of approximately 1 Hz.

N range lamp flashing items

Input shaft speed sensor

Output shaft speed sensor

Each solenoid valve

Out of phase at each shift point

A/T control relay

Caution
If the N range lamp is flashing at a frequency of
approximately 2 Hz (faster than at 1 Hz), it means that
the automatic transmission fluid temperature is too high.
Stop the vehicle in a safe place and wait until the N range
lamp switches off.

2. Method of reading the diagnosis code

Use the MUT-

II

 or the N range lamp to take a reading of

the diagnosis codes. (Refer to GROUP 00 – How to Use
Troubleshooting/Inspection Service Points.)

ROAD TEST

Check by the following procedure.

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

1

Ignition switch: 
OFF

Ignition switch
(1) ON

Data list No. 54
Battery voltage [V]

Control relay

54

A/T Control 
relay  system 
(23-18)

AUTOMATIC TRANSMISSION – 

Troubleshooting <A/T>

23-6

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

2

Ignition switch: 
ON
Engine: Stopped
Selector lever 

Selector lever 
position
(1) P, (2) R, 
(3) N, (4) D

Data list No. 61
(1) P, (2) R, (3)N,
(4) D

Inhibitor switch

–

Inhibitor switch 
system (23-29)

Selector lever 
position: P

Selector lever 
position
(1) D (1st gear)
(2) Selector sports

mode (1st
gear)

(3) Upshift and

hold the selec-
tor lever (2nd
gear)

(4) Downshift and

hold the selec-
tor lever (1st
gear)

Data list
     

No.67 No.68 No.69

(1) OFF OFF OFF
(2) ON   OFF OFF
(3) ON   ON   OFF
(4) ON   OFF  ON
Shift indicator lamp
(1) D and 1

illuminate

(2) Only 1

illuminates

(3) Only 2

illuminates

(4) Only 1

illuminates

Select switch
Upshift switch
Downshift
switch

–

Shift switch
assembly sys-
tem (23-29)

Accelerator pedal
(1) Released
(2) Half depressed
(3) Depressed

Data list No. 11
(1) 400 – 1,000 mV
(2) Gradually rises

from (1)

(3) 4,500  – 5,000

mV

Accelerator
pedal position
sensor

11
12
14

Accelerator
pedal position
sensor system
(23-12)

Data list No. 25
(1) OFF
(2) ON

Wide open 
throttle switch

25

Wide open
throttle switch
system (23-14)

Brake pedal
(1) Depressed
(2) Released

Data list No. 26
(1) ON
(2) OFF

Stop lamp
switch

26

Stop lamp switch
system (23-15)

3

Ignition switch:
ST
Engine: Stopped

Starting test with
lever P or N range

Starting should be 
possible

Starting 
possible or 
impossible

–

Starting 
impossible
(23-20)

4

Warming up

Drive for 15
minutes or more so
that the A/T fluid
temperature
becomes 70 –
80



C.

Data list No. 15
Gradually rises to
70 – 80



C

A/T fluid 
temperature
sensor

15

A/T fluid
temperature
sensor system
(23-12)