Mitsubishi Montero Sport (2004+). Manual - part 626

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-69

DTC 22 (P0715): Input Shaft Speed Sensor System

Input Shaft Speed Sensor System

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-70

.

CIRCUIT OPERATION

• The input shaft speed sensor generates 0 ⇔ 5 

volts pulse signal when the input shaft rotates. 
The pulse signal frequency increases with a rise 
in input shaft speed.

• The input shaft speed sensor is connected to the 

PCM (terminals 57 and 103) via the input shaft 
speed sensor connector (terminals 1 and 2).

• The PCM detects the input shaft speed by the 

signal input to terminal 103.

• The input shaft speed sensor generates the pulse 

signal as the teeth of the reverse clutch retainer 
pass the magnetic tip of the sensor.

.

AC202362

2 3

1

CONNECTOR: B-16

AB

B-16 (B)

AC202363

4

3

10 11

9

8

5

12

1
6

2
7

9 10

8

6 7

31 32

30

29

21

20

19

18

5

4

2

1

3

27

26

24

23

25

16

15

14

13

12

28

17

33

22

11

22

9 10

20

19

6 7 8

21

17

1516

5

14

12 13

3

2

4

18

11

1

CONNETORS: C-30, C-71, C-96

AB

C-30

C-71

C-96

C-30

C-71

C-96

AC202316

PCM

60

46

26

57

45

44

64

55 56

65

62 63

52 53

5051

61

42

59

48

41
47
58

43
49

54

120

107

119

106

129 130

118

105

117

114115116

126127128

104

111

103

112

108

101102

109110

121122123

124

113

125

CONNECTORS: C-90, C-92

AB

C-90

C-92

C-90 (GR)

C-92 (GR)

AC202365

JUNCTION BLOCK (REAR)

2

1

M

4

3

19 20

6

17

7

5

15

14

16

8

18

3

11 12

4

2

10

1

9

13

CONNECTORS: D-08, D-13

AB

D-08

D-13

D-08

D-13

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-71

DESCRIPTIONS OF MONITOR METHODS
If there is no detection pulse from input shaft speed 
sensor (turbine rotation) even during driving test at 
more than specified speed, PCM judges that input 
shaft speed sensor has a failure.

.

MONITOR EXECUTION
Continuous

.

MONITOR EXECUTION CONDITIONS (Other 
monitor and Sensor)

Other Monitor (There is no temporary DTC stored 

in memory for the item monitored below)

• DTC 29 (P0500): Vehicle speed sensor malfunc-

tion

Sensor (The sensor below is determined to be 

normal)

• Vehicle speed sensor

.

LOGIC FLOW CHARTS (Monitor Sequence)

.

AC205223

N

E

 : 

Engine speed

START

Yes

No

Transmission fluid 
temperature sensor 
voltage < 4.5 V

Transmission range 
switch position is in 
D, 3, 2 or L range

Shift stage is 1st or 2nd
and N

E

 < 2,600 r/min

Vehicle speed > 30 km/h (19 mph)

Yes

No

Yes

No

Yes

No

Pulses of input shaft speed 
sensor are not inputted

Continuous failure for 4 secs.

Good

Malfunction

END

Yes

No

Yes

No

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-72

DTC SET CONDITIONS

Check Conditions

• Transmission range switch position: D, 3, 2 or L.

• Vehicle speed: 30 km/h (19 mph) or more.

• Transmission fluid temperature sensor voltage: 

4.5 volts or less.

Judgement Criteria

• Input shaft speed signal: no signal change. (4 

seconds)

• If DTC 22 (P0715) is set consecutively four times, 

the transmission is locked into 3rd gear or 2nd 
gear as a fail-safe measure, and the "N" range 
light flashes once per second.

.

OBD-II DRIVE CYCLE PATTERN
Start the engine, shift to 3rd gear or higher, and drive 
at 40 km/h (25 mph) or more for 10 seconds.

.

TROUBLESHOOTING HINTS (The most likely 
causes for this code to be set are:)

• Malfunction of the input shaft speed sensor circuit

• Malfunction of the reverse clutch retainer

• Damaged harness, connector

• Malfunction of the PCM

DIAGNOSIS

Required Special Tool:

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B

STEP 1. Using scan tool MB991958, check data list item 22: 
Input Shaft Speed Sensor.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Start the engine.
(3) Set scan tool MB991958 to data reading mode.

• Item 22: Input Shaft Speed Sensor.

• When driving at constant speed of 50 km/h (31 

mph), the display should be "1,400 

− 1,700 r/min" 

(Gear range: 3rd gear).

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?

YES : It can be assumed that this malfunction is intermittent. 

Refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points 

− How to 

Cope with Intermittent Malfunction 

P.00-7

.

NO :  Go to Step 2.

AK303629AB

MB991911

MB991827

MB991824 

16-PIN