Mitsubishi Colt Ralliart. Manual - part 706

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-149

STEP 18. Connector check: B-106 engine control 
relay connector

Q: Is the check result normal?

YES : 

Go to Step 19.

NO : 

Repair or replace.

STEP 19. Check harness between A-133 (terminal 
No. 1) crank angle sensor intermediate connector 
and B-106 (terminal No. 4) engine control relay 
connector.

NOTE: Before checking harness, check intermediate 
connectors A-17 and B-112, and repair if necessary.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 20.

NO : 

Repair.

3

2

1

4

AK402084

J/B side 
connector

B-106

Connector: B-106
J/B (front side)

AC

AK402095

1

2

3

AC

A-133(DG)

Connector: A-133

Harness side 
connector

3

2

1

4

AK402084

J/B side 
connector

B-106

Connector: B-106
J/B (front side)

AC

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-150

STEP 20. Connector check: A-114 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 21.

NO : 

Repair or replace.

STEP 21. Check harness between A-133 (terminal 
No. 2) crank angle sensor intermediate connector 
and A-114 (terminal No. 13) engine-ECU 
connector.

•

Check output line for damage.

Q: Is the check result normal?

YES : 

Go to Step 22.

NO : 

Repair.

STEP 22. Check crank angle sensor sensing 
blade.

Q: Is the check result normal?

YES : 

Replace the crank angle sensor.

NO : 

Replace the crank angle sensor blade.

STEP 23. M.U.T.-III data list

• Refer to Data List Reference Table 

P.13B-335

.

a. Item 22: Crank angle sensor

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunctions 

P.00-13

).

NO : 

Replace the engine-ECU.

AK402745

6

4

2

5

3

1

9

7

8

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

L

AF

A-114

Connector: 

A-114

Harness side connector

Engine-ECU

Battery

AK402095

1

2

3

AC

A-133(DG)

Connector: A-133

Harness side 
connector

AK402745

6

4

2

5

3

1

9

7

8

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

L

AF

A-114

Connector: 

A-114

Harness side connector

Engine-ECU

Battery

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-151

Code No. P0340: Camshaft Position Sensor System

OPERATION

• Power is supplied to the camshaft position sensor 

(terminal No. 3) from the engine control relay (ter-
minal No. 4) and is earthed to the engine-ECU 
(terminal No. 27) through the camshaft position 
sensor (terminal No. 1).

• A power voltage of 5 V is applied to the camshaft 

position sensor (terminal No. 2) from the 
engine-ECU (terminal No. 12).

AK402690

3

1

2

4

1

2 3

19

21

20

18

17

16

15

14

1213

11

8 9

L

10

37
52 53 54 555657585960616263646566

38 39 404142434445464748495051

22 23 24 252627282930313233343536

7

5

3

1

6

4

2

Engine-ECU

To engine-ECU

Camshaft Position Sensor Circuit

      A-114

Wire colour code
B: Black  LG: Light green  G: Green  L: Blue  W: White  Y: Yellow  SB: Sky blue  BR: Brown  O: Orange  GR: Gray
R: Red  P: Pink  V: Violet

  P: Purple

Engine
control
relay

Camshaft
position
sensor

    A-110
MU802337

B-112

B-108

12

1

4

3

4

6

2

2

27

BR-L

L-W

R

R

3

1

B-106

1

1

R

Fusible link

16

20A

J/B

AF

A-17

5 V

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-152

FUNCTION

• The camshaft position sensor detects the top 

dead center on the compression stroke of No. 1 
cylinder and provides the engine-ECU with a 
pulse signal.

TROUBLE JUDGEMENT

Check Condition

• Ignition switch is in "ON" position.

Judgement Criterions

• Pulse signal from crank angle sensor continues 

264 times and engine speed is less than 440 
r/min.

• Crank angle sensor signal pattern is abnormal.

Check Condition

• Ignition switch is in "ON" position.

Judgement Criterion

• Crank angle sensor signal pattern is not normal 

for 4 seconds and engine speed is more than 440 
r/min.

Check Condition

• While engine is being cranked.

Judgement Criterion

• Crank angle sensor output voltage does not vary 

for 4 seconds (no pulse signal input).

PROBABLE CAUSES

• Failed camshaft position sensor

• Open/short circuit in or damage to camshaft posi-

tion sensor circuit, or loose connector contact

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. Connector check: A-110 camshaft 
position sensor connector

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair or replace.

STEP 2. Perform voltage measurement at A-110 
camshaft position sensor connector.

• Disconnect connector and measure at harness 

side.

• Ignition switch: ON

• Voltage between terminal No. 3 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Go to Step 3.

AK402097

1

2

3

AC

Connector: A-110

Harness side 
connector

A-110(B)

AK402097

1

2

3

AC

Connector: A-110

Harness side 
connector

A-110(B)

Main

Index

Group

TOC