Mitsubishi Colt Ralliart. Manual - part 705

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-145

STEP 6. Connector check: A-114 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair or replace.

STEP 7. Check harness between crank angle 
sensor intermediate connector A-133 (terminal 
No. 2) and engine-ECU connector A-114 (terminal 
No. 13).

•

Check the output line for short circuit.

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair.

STEP 8. 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

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61

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65

66

L

AF

A-114

Connector: 

A-114

Harness side connector

Engine-ECU

Battery

AK402745

6

4

2

5

3

1

9

7

8

10

11

12

13

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58

59

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61

62

63

64

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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

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-146

STEP 9. Perform voltage measurement at A-133 
crank angle sensor intermediate connector.

•

Disconnect the connector, and measure at harness 

side.

• Ignition switch: ON

• Voltage between terminal No. 1 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 11.

NO : 

Go to Step 10.

STEP 10. Connector check: B-106 engine control 
relay connector

Q: Is the check result normal?

YES : 

Check the intermediate connectors A-17 

and B-112, and repair them if necessary. If 
the intermediate connectors are normal, 
check and repair the harness between 
A-133 (terminal No. 1) crank angle sensor 
intermediate connector and B-106 (terminal 
No. 4) engine control relay connector.

• Check power supply line for 

open/short circuit.

NO : 

Repair or replace.

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

AK402095

1

2

3

AC

A-133(DG)

Connector: A-133

Harness side 
connector

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-147

STEP 11. Perform resistance measurement at 
A-133 crank angle sensor intermediate 
connector.

•

Disconnect the connector, and measure at harness 

side.

• Resistance between terminal No. 3 and earth.

OK: Continuity (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 15.

NO : 

Go to Step 12.

STEP 12. Connector check: A-114 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 13.

NO : 

Repair or replace.

STEP 13. Check harness between A-133 (terminal 
No. 3) crank angle sensor intermediate connector 
and A-114 (terminal No. 28) engine-ECU 
connector.

•

Check earthing line for open circuit and damage.

Q: Is the check result normal?

YES : 

Go to Step 14.

NO : 

Repair.

STEP 14. 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.

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

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61

62

63

64

65

66

L

AF

A-114

Connector: 

A-114

Harness side connector

Engine-ECU

Battery

AK402745

6

4

2

5

3

1

9

7

8

10

11

12

13

14

15

16

17

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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

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-148

STEP 15. Perform output waveform check at 
A-133 crank angle sensor intermediate connector 
(using an oscilloscope)

•

Use special tool test harness (MB991658) to connect 

connector, and measure at pick-up harness.

• Engine: Idling

• Transmission: Neutral

• Voltage between terminal No. 2 and earth.

OK: Waveforms should be displayed on 
inspection procedure using an oscilloscope 
(Refer to 

P.13B-352

), its maximum value 

should be 4.8 V or more, and its minimum 
value should be 0.6 V or less with no noise in 
waveform.

Q: Is the check result normal?

YES : 

Go to Step 16.

NO : 

Go to Step 23.

STEP 16. Connector check: A-133-1 crank angle 
sensor connector

Q: Is the check result normal?

YES : 

Go to Step 17.

NO : 

Repair or replace.

STEP 17. Check harness between A-133-1 crank 
angle sensor connector and A-133 crank angle 
sensor intermediate connector.

•

Check the power supply line for open/short circuit 

and damage.

• Check the output line for open/short circuit and 

damage.

• Check earthing line for open circuit and damage.

Q: Is the check result normal?

YES : 

Go to Step 18.

NO : 

Replace the timing belt cover.

AK402095

1

2

3

AC

A-133(DG)

Connector: A-133

Harness side 
connector

AK402096

1

2

3

Connector: A-133-1

Harness side 
connector

A-133-1

AC

AK402095

1

2

3

AC

A-133(DG)

Connector: A-133

Harness side 
connector

AK402096

1

2

3

Connector: A-133-1

Harness side 
connector

A-133-1

AC

Main

Index

Group

TOC