Mitsubishi Colt Ralliart. Manual — part 47

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-142

STEP 19. Check harness between A-133 (terminal
No. 2) crank angle sensor connector and A-114
(terminal No. 13) engine-ECU connector or
engine-CVT-ECU connector.

• Check output line for damage.

Q: Is the check result normal?

YES :

Go to Step 20 .

NO :

Repair the damaged harness wire.

STEP 20. Check the crankshaft sensing ring.

Q: Is the check result normal?

YES :

Replace crank angle sensor.

NO :

Replace the crankshaft sensing ring.

STEP 21. M.U.T.-III data list

• Refer to Data List Reference Table

P.13A-331

.

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 engine-ECU <M/T> or
engine-CVT-ECU <CVT>.

AK402016

1

2

3

AC

Connector: A-133

A-133 (B)

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

AD

A-114

Connector:

A-114

Harness side connector

Engine-ECU <M/T> or
engine-CVT-ECU <CVT>

Battery

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-143

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
<M/T> or engine-CVT-ECU <CVT> (terminal No.
27) from the camshaft position sensor (terminal
No. 1).

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

position sensor output terminal (terminal No. 2)
from the engine-ECU <M/T> or engine-CVT-ECU
<CVT> (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 <M/T> or
engine-CVT-ECU <CVT>

To engine-ECU <M/T> or
engine-CVT-ECU <CVT>

Camshaft Position Sensor Circuit

A-114

Engine
control
relay

Camshaft
position
sensor

A-110
MU802337

B-112

B-108

12

1

4

3

4

6

2

2

27

GR-G

BR-L

R

R

3

1

B-106

1

1

R

Fusible link

16

20A

J/B

AE

A-17

5 V

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 Pu: Purple

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-144

FUNCTION

• The camshaft position sensor detects the top

dead center on the compression stroke of the No.
1 cylinder and inputs a pulse signal to the
engine-ECU <M/T> or engine-CVT-ECU <CVT>.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is in "ON" position <M/T>.

Judgment Criteria

• Pulse signal from crank angle sensor continues

264 times and engine speed is less than 440
r/min <M/T>.

• Camshaft position sensor signal pattern is abnor-

mal <M/T>.

Check Condition

• Ignition switch is in "ON" position <M/T>.

Judgment Criterion

• Camshaft position sensor signal pattern is not

normal for 4 seconds and engine speed is more
than 440 r/min <M/T>.

Check Condition

• While engine is being cranked or operated

<CVT>.

Judgment Criterion

• Camshaft position sensor output voltage has not

been changed (no pulse signal is has been input)
for 4 seconds <CVT>.

PROBABLE CAUSES

• Failed camshaft position sensor

• Open/short circuit in camshaft position sensor cir-

cuit or loose connector contact

• Failed engine-ECU <M/T> or engine-CVT-ECU

<CVT>

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 the connector.

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 .

1

2

3

AK402009

Connector: A-110

AC

A-110 (B)

A-110 Harness side
connector

1

2

3

AK402009

Connector: A-110

AC

A-110 (B)

A-110 Harness side
connector

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-145

STEP 3. Connector check: B-106 engine control
relay connector

Q: Is the check result normal?

YES :

Check intermediate connector A-17 and

B-112, and repair if necessary. If
intermediate connectors are normal, check
and repair harness between A-110 (terminal
No. 3) camshaft position sensor connector
and B-106 (terminal No. 4) engine control
relay connector.

• Check power supply line for

open/short circuit.

NO :

Repair or replace the connector.

STEP 4. Perform voltage measurement at A-110
camshaft position sensor connector.

• Disconnect connector, and measure at harness

side.

• Ignition switch: ON

• Voltage between terminal No. 2 and earth.

OK: 4.9

− 5.1 V

Q: Is the check result normal?

YES :

Go to Step 10 .

NO :

Go to Step 5 .

3

2

1

4

AK402060

B-106
J/B side
connector

B-106

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

AC

1

2

3

AK402009

Connector: A-110

AC

A-110 (B)

A-110 Harness side
connector

1

2

3

AK402009

Connector: A-110

AC

A-110 (B)

A-110 Harness side
connector

Main

Index

Group

TOC