Mitsubishi Colt Ralliart. Manual - part 93

 

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Mitsubishi Colt Ralliart. Manual - part 93

 

 

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-326

FUNCTION

• In response to a signal from the engine-ECU 

<M/T> or engine-CVT-ECU <CVT>, the purge 
control solenoid valve controls the flow rate of the 
purge air to be introduced into the surge tank.

PROBABLE CAUSES

• Failed purge control solenoid valve

• Open/short/damaged circuit in purge control sole-

noid value circuit or loose connector contact

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

<CVT>

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III actuator test

• Item 08: Purge control solenoid valve

OK: Operating sound can be heard and the 
valve vibrates

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 : 

Go to Step 2 .

STEP 2. Connector check: A-108 purge control 
solenoid valve connector

Q: Is the check result normal?

YES : 

Go to Step 3 .

NO : 

Repair or replace the connector.

STEP 3. Perform resistance measurement at 
A-108 purge control solenoid valve connector.

• Disconnect connector, and measure at solenoid 

valve side.

• Resistance between terminal No. 1 and No. 2.

OK: 30 

 34  (at 20°C)

Q: Is the check result normal?

YES : 

Go to Step 4 .

NO : 

Replace purge control solenoid valve.

STEP 4. Perform voltage measurement at A-108 
purge control solenoid valve connector.

• Disconnect connector, and measure at harness 

side.

• Ignition switch: ON

• Voltage between terminal No. 2 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 6 .

NO : 

Go to Step 5 .

AK402007

1

2

AC

Connector: A-108

A-108 (B)

A-108 Harness side
connector

AK402007

1

2

AC

Connector: A-108

A-108 (B)

A-108 Harness side
connector

AK402007

1

2

AC

Connector: A-108

A-108 (B)

A-108 Harness side
connector

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-327

STEP 5. Connector check: B-106 engine control 
relay connector

Q: Is the check result normal?

YES : 

Check intermediate connector A-17, B-112, 

and repair if necessary. If intermediate 
connector is normal, check and repair 
harness between A-108 (terminal No. 2) 
purge control solenoid valve 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 6. Perform voltage measurement at A-114 
engine-ECU connector or engine-CVT-ECU 
connector.

• Disconnect connector, and measure at harness 

side.

• Ignition switch: ON

• Voltage between terminal No. 38 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 8 .

NO : 

Go to Step 7 .

3

2

1

4

AK402060

B-106
J/B side 
connector

B-106

Connector: B-106
J/B (front side)

AC

AK402007

1

2

AC

Connector: A-108

A-108 (B)

A-108 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-328

STEP 7. Connector check: A-114 engine-ECU 
connector or engine-CVT-ECU connector

Q: Is the check result normal?

YES : 

Check and repair harness between A-108 

(terminal No. 1) purge control solenoid valve 
connector and A-114 (terminal No. 38) 
engine-ECU connector or engine-CVT-ECU 
connector.

• Check output line for open/short 

circuit.

NO : 

Repair or replace the connector.

STEP 8. Connector check: A-114 engine-ECU 
connector or engine-CVT-ECU connector

Q: Is the check result normal?

YES : 

Go to Step 9 .

NO : 

Repair or replace the 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

AK402007

1

2

AC

Connector: A-108

A-108 (B)

A-108 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-329

STEP 9. Check harness between A-108 (terminal 
No. 1) purge control solenoid valve connector 
and A-114 (terminal No. 38) engine-ECU 
connector or engine-CVT-ECU connector.

• Check output line for damage.

Q: Is the check result normal?

YES : 

Go to Step 10 .

NO : 

Repair the damaged harness wire.

STEP 10. Check harness between A-108 (terminal 
No. 2) purge control solenoid valve connector 
and B-106 (terminal No. 4) engine control relay 
connector.

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

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 11 .

NO : 

Repair the damaged harness wire.

AK402007

1

2

AC

Connector: A-108

A-108 (B)

A-108 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

AK402007

1

2

AC

Connector: A-108

A-108 (B)

A-108 Harness side
connector

3

2

1

4

AK402060

B-106
J/B side 
connector

B-106

Connector: B-106
J/B (front side)

AC

Main

Index

Group

TOC

 

 

 

 

 

 

 

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