Mitsubishi Colt Ralliart. Manual — part 21

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4A9>

13A-38

STEP 10. 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. 3) intake air temperature
sensor connector and A-114 (terminal No.
56) engine-ECU connector or
engine-CVT-ECU connector.

• Check output line for open circuit.

NO :

Repair or replace the connector.

STEP 11. Connector check: A-114 engine-ECU
connector or engine-CVT-ECU connector

Q: Is the check result normal?

YES :

Go to Step 12 .

NO :

Repair or replace the connector.

AK402745

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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

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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-39

STEP 12. Check harness between A-106 (terminal
No. 3) intake air temperature sensor connector
and A-114 (terminal No. 56) engine-ECU
connector or engine-CVT-ECU connector.

• Check output line for short circuit.

Q: Is the check result normal?

YES :

Go to Step 7 .

NO :

Repair the damaged harness wire.

STEP 13. Perform voltage measurement at A-106
intake air temperature sensor connector.

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

nect only terminal No. 3 and No. 4, and then
measure at pick-up harness.

• Ignition switch: ON

• Voltage between terminal No. 3 and earth.

OK:

Ambient temperature at

−20°C: 3.8 − 4.4 V

Ambient temperature at 0

°C: 3.2 − 3.8 V

Ambient temperature at 20

°C: 2.3 − 2.9 V

Ambient temperature at 40

°C: 1.5 − 2.1 V

Ambient temperature at 60

°C: 0.8 − 1.4 V

Ambient temperature at 80

°C: 0.4 − 1.0 V

Q: Is the check result normal?

YES :

Go to Step 7 .

NO :

Go to Step 14 .

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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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-40

STEP 14. Connector check: A-114 engine-ECU
connector or engine-CVT-ECU connector

Q: Is the check result normal?

YES :

Go to Step 15 .

NO :

Repair or replace the connector.

STEP 15. Check harness between A-106 (terminal
No. 3) intake air temperature sensor connector
and A-114 (terminal No. 56) engine-ECU
connector or engine-CVT-ECU connector.

• Check output line for damage.

Q: Is the check result normal?

YES :

Go to Step 16 .

NO :

Repair the damaged harness wire.

AK402745

6

4

2

5

3

1

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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

AK402745

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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-41

STEP 16. Connector check: A-114 engine-ECU
connector or engine-CVT-ECU connector.

Q: Is the check result normal?

YES :

Check harness between A-106 (terminal

No. 4) intake air temperature sensor
connector and A-114 (terminal No. 33)
engine-ECU connector or engine-CVT-ECU
connector.

• Check output line for damage.

NO :

Repair or replace the connector.

AK402745

6

4

2

5

3

1

9

7

8

10

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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