Mitsubishi Colt Ralliart. Manual — part 18

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-26

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

Q: Is the check result normal?

YES :

Go to Step 7 .

NO :

Repair or replace the connector.

STEP 7. Check harness between A-106 (terminal
No. 2) manifold absolute pressure sensor
connector and A-114 (terminal No. 32)
engine-ECU connector or engine-CVT-ECU
connector.

• Check power supply line for short circuit.

Q: Is the check result normal?

YES :

Go to Step 8 .

NO :

Repair the damaged harness wire.

AK402745

6

4

2

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3

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L

AD

A-114

Connector:

A-114

Harness side connector

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

Battery

AK402005

4

3

2 1

AC

A-106

Connector: A-106

A-106 Harness side
connector

AK402745

6

4

2

5

3

1

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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-27

STEP 8. M.U.T.-III data list

• Refer to Data List Reference Table

P.13A-331

.

a. Item No. 32: Manifold absolute pressure sen-

sor

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>.

STEP 9. Perform resistance measurement at
A-106 manifold absolute pressure sensor
connector.

• Disconnect and measure at harness side.

• Resistance between terminal No. 4 and earth.

OK: Continuity (2

Ω or less)

Q: Is the check result normal?

YES :

Go to Step 12 .

NO :

Go to Step 10 .

STEP 10. Connector check: A-114 engine-ECU
connector or engine-CVT-ECU connector

Q: Is the check result normal?

YES :

Go to Step 11 .

NO :

Repair or replace the connector.

AK402005

4

3

2 1

AC

A-106

Connector: A-106

A-106 Harness side
connector

AK402745

6

4

2

5

3

1

9

7

8

10

11

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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-28

STEP 11. Check harness between A-106 (terminal
No. 4) manifold absolute pressure sensor
connector and A-114 (terminal No. 33)
engine-ECU connector or engine-CVT-ECU
connector.

• Check earthing line for open circuit and damage.

Q: Is the check result normal?

YES :

Go to Step 8 .

NO :

Repair the damaged harness wire.

STEP 12. Perform voltage measurement at A-106
manifold absolute pressure sensor connector.

• Use special tool test harness (MB991709) to con-

nect connector and measure at pick-up harness.

• 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 14 .

NO :

Go to Step 13 .

AK402005

4

3

2 1

AC

A-106

Connector: A-106

A-106 Harness side
connector

AK402745

6

4

2

5

3

1

9

7

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66

L

AD

A-114

Connector:

A-114

Harness side connector

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

Battery

AK402005

4

3

2 1

AC

A-106

Connector: A-106

A-106 Harness side
connector

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-29

STEP 13. 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-106

(terminal No. 2) manifold absolute pressure
sensor connector and A-114 (terminal No.
32) engine-ECU connector or
engine-CVT-ECU connector.

• Check power supply line for damage.

NO :

Repair or replace the connector.

STEP 14. Perform voltage measurement at A-106
manifold absolute pressure sensor connector.

• Use special tool test harness (MB991709) to con-

nect connector, and measure at pick-up harness.

• Ignition switch: ON

• Voltage between terminal No. 4 and earth.

OK: 0.5 V or less

Q: Is the check result normal?

YES :

Go to Step 16 .

NO :

Go to Step 15 .

AK402745

6

4

2

5

3

1

9

7

8

10

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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

AK402005

4

3

2 1

AC

A-106

Connector: A-106

A-106 Harness side
connector

AK402005

4

3

2 1

AC

A-106

Connector: A-106

A-106 Harness side
connector

Main

Index

Group

TOC