Mitsubishi Pajero Pinin. Manual - part 174

 

  Index      Mitsubishi     Mitsubishi Pajero Pinin - service repair manual 2001 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  172  173  174  175   ..

 

 

Mitsubishi Pajero Pinin. Manual - part 174

 

 

AUTOMATIC TRANSMISSION – 

Troubleshooting <A/T>

23-6

ROAD TEST

No.

State prior to test
and operation

Test and operation

Judgement value

Check item

Inspection item if there
is an abnormality

1

Ignition switch: 
ON
Engine: Stopped

Ignition switch
(1) ON
(2) OFF

Data list No. 14
(1) Approx. 5V
(2) 0V

APS (Power
supply voltage)

Code No.13, 14 
APS system (P.23-10)

g

Overdrive switch
(1) ON
(2) OFF

Data list No. 35
(1) OD
(2) OD-OFF

Overdrive
switch

Overdrive switch
system (P.23-25)

Selector lever 
position
(1) P
(2) R
(3) N
(4) D
(5) 2
(6) L

Data list No. 37
(1) P, R, D
(2) P, R, D
(3) N
(4) P, R, D
(5) 2
(6) L

Inhibitor switch

Inhibitor switch
system (P.23-25)

Brake pedal
(1) Depressed
(2) Released

Data list No. 28
(1) ON
(2) OFF

Stop lamp
switch

Stop lamp switch
system (P.23-26)

2

Ignition switch:
ST
E

i

S

d

Starting test with
selector lever P or
N position

Starting should be 
possible

Starting 
possible or 
impossible

Does not move
(P.23-17)

Engine: Stopped

N position

impossible

Lockup malfunction
(P.23-24)

3

Engine: Warmed
up

Drive for 15
minutes or more so
that the automatic
fluid temperature
becomes 70 –
90

_

C.

Data list No. 15
Gradually rises to
70 – 90

_

C

A/T fluid 
temperature
sensor

A/T fluid temperature
sensor system
(P.23-10)

4

Engine: Idling
Selector lever 
position: N

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

depressed
(approx

Data list No. 13
(1) 0 – 5 %
(2) Gradually rises

from (1)

(3) 85 – 100 %

APS (Throttle 
opening angle)

Code No.13, 14 
APS system (P.23-10)

(approx. 
2 seconds)

Data list No. 22
(1) OFF
(2) ON

Wide open
throttle switch

Wide open throttle
switch system
(P.23-11)

Selector lever 
position
(1) N 

  D

Should be no 
abnormal shifting 
shocks

Does not move

Does not move
forward and reverse
(P.23-17)

(1) N 

  D

(2) N 

  R

Time lag should be
within 2 seconds

Does not move
forward only (P.23-18)

Does not reverse only
(P.23-18)

Shocks when
shifting

Large shocks
(P.23-22)

5

Engine: Idling
(Vehicle stopped)
Selector lever 

Accelerator pedal
(1) Released

Data list No. 27
(1) 1st

Solenoid valve
No.1

Code No.41, 42 
Solenoid valve No.1
system (P.23-13)

Selector lever 
position: D

Solenoid valve
No.2

Code No.43, 44 
Solenoid valve No.2
system (P.23-13)

AUTOMATIC TRANSMISSION – 

Troubleshooting <A/T>

23-7

No.

State prior to test
and operation

Test and operation

Judgement value

Check item

Inspection item if there
is an abnormality

6

Selector lever
position: D
Overdrive switch:

Shift position and 
vehicle speed
(1) Idling 

Data list No. 27
(1) 1st
(2) 1st

Solenoid valve
No.1

Code No.41, 42 
Solenoid valve No.1
system (P.23-13)

Overdrive switch:
OFF

(1) Idling 

(Vehicle
stopped)

(2) Driving at 

5 km/h

(2) 1st
(3) 3rd
(4) 2nd

Solenoid valve
No.2

Code No.43, 44 
Solenoid valve No.2
system (P.23-13)

5  km/h

(3) Driving at 

constant 
speed of 
50 k /h

Data list No. 31
(3) 1,800 – 2,000

rpm

Input shaft
speed sensor

Input shaft speed
sensor system
(P.23-11)

50 km/h 
(20 seconds 
or more)

(4) Driving at 

Data list No. 32
(3) 1,800 – 2,000

rpm

Output shaft 
speed sensor

Output shaft speed
sensor system
(P.23-11)

(4) Driving  at 

constant 
speed of 
40 km/h with 
the selector 
lever in 2

Data list No. 41
(2) ON
(3) OFF
(4) ON

Solenoid valve
No.1

Code No.41, 42 
Solenoid valve No.1
system (P.23-13)

lever  in  2 
position

Data list No. 43
(2) OFF
(3) ON
(4) ON

Solenoid valve
No.2

Code No.43, 44 
Solenoid valve No.2
system (P.23-13)

Data list No. 47
(1) OFF
(2) OFF
(3) ON
(4) Accelerates

smoothly and

Solenoid valve
No.3
Malfunction
when shifting

Code No.47, 48 
Solenoid valve No.3
system (P.23-13)
Shifting point
abnormality (P.23-20)

smoothly 

and

no abnormal
shocks should
occur.

Slippage (vibration)
(P.23-23)

7

Selector lever
position: D
Overdrive switch:

Shift position and 
vehicle speed
(1) Driving at 

Data list No. 27
(1) 4th

Solenoid valve
No.1

Code No.41, 42 
Solenoid valve No.1
system (P.23-13)

Overdrive switch:
ON

(1) Driving  at 

constant 
speed of 
50 km/h 
(20 seconds

Solenoid valve
No.2

Code No.43, 44 
Solenoid valve No.2
system (P.23-13)

(20  seconds 
or more)

Data list No. 41
(1) OFF

Solenoid valve
No.1

Code No.41, 42 
Solenoid valve No.1
system (P.23-13)

Data list No. 43
(1) OFF

Solenoid valve
No.2

Code No.43, 44 
Solenoid valve No.2
system (P.23-13)

AUTOMATIC TRANSMISSION – 

Troubleshooting <A/T>

23-8

No.

State prior to test
and operation

Test and operation

Judgement value

Check item

Inspection item if there
is an abnormality

8

Selector lever 
position: D
Overdrive switch:

Monitor data list
No. 13, 27, and 32
with the MUT-

II

.

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

Malfunction
when shifting

Upshifting does not
occur (P.23-19)

Overdrive switch:
ON

with the MUT

II

.

(1) Accelerate to

4th gear at APS
opening angle

be the same as the
specified output
shaft speed
(vehicle speed)

Downshifting does not
occur (P.23-20)

o e

g a g e

of 30 %.

(2) Gently 

decelerate to a
standstill

( e c e s eed)
and no abnormal
shocks should
occur.
F

(4) (5)

d (6)

Shifting point
abnormality (P.23-20)

standstill.

(3) Accelerate to

4th gear at APS
opening angle
of 50 %

For (4), (5) and (6),
downshifting
should occur
immediately 
after the shifting

Upshifting occurs
spontaneously
(P.23-19)

of  50  %.

(4) While driving at

50 km/h in 4th
gear, set the

after the shifting 
operation is made.

Incorrect drive gear
position (P.23-21)

gear,  set  the
overdrive
switch to OFF
position.

(5) Whil d i i

Malfunction
when driving
the vehicle

Large shocks
(P.23-22)

(5) While driving at

50 km/h in 3rd
gear, move the
selector

lever

the vehicle

Slippage (vibration)
(P.23-23)

selector lever
to 2 position.

(6) While driving at

20 km/h in 2nd

Lockup malfunction
(P.23-24)

20 km/h in 2nd
gear, move the
selector lever
to L position.

Abnormal engine
braking (P.23-24)

SHIFT PATTERN

D range (Overdrive switch: ON)

Throttle opening (%)

100

Output shaft speed (r/min)

20

1

2

2

3

4

3

0

1,000

2,000

3,000

4,000

5,000

6,000

3

4

Vehicle speed (km/h)

0

40

60

80

50

2

1

3

2

100

150

AUTOMATIC TRANSMISSION – 

Troubleshooting <A/T>

23-9

INSPECTION CHART FOR DIAGNOSIS CODE

Code

Diagnosis item

Reference page

13

Accelerator pedal position sensor system 
(Throttle opening voltage)

Sensor malfunction,
open circuit, short circuit

23-10

14

Accelerator pedal position sensor system 
(Throttle power supply voltage)

Open circuit, 
short circuit

23-10

15

A/T fluid temperature sensor system

Open circuit

23-10

16

A/T fluid temperature sensor system

Short circuit

23-10

22

Wide open throttle switch

Open circuit, 
short circuit

23-11

31

Input shaft speed sensor system

Open circuit

23-11

32

Output shaft speed sensor system

Open circuit

23-11

38

Vehicle speed sensor system

Open circuit

23-12

41

Solenoid valve No.1 system

Open circuit

23-13

42

Solenoid valve No.1 system

Short circuit

23-13

43

Solenoid valve No.2 system

Open circuit

23-13

44

Solenoid valve No.2 system

Short circuit

23-13

47

Solenoid valve No.3 system

Open circuit

23-13

48

Solenoid valve No.3 system

Short circuit

23-13

55

Abnormal communication with engine-ECU

Open circuit

23-14

 

 

 

 

 

 

 

Content   ..  172  173  174  175   ..