Mitsubishi Colt Ralliart. Manual - part 716

 

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Mitsubishi Colt Ralliart. Manual - part 716

 

 

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-189

FUNCTION

• The oil feeder control valve controls the phase 

angle of the intake camshaft by the signal from 
the engine-ECU.

TROUBLE JUDGEMENT

Check Conditions

• Ignition switch is in "ON" position.

• Oil feeder control valve is in OFF position.

Judgement Criterion

• For 4 seconds, driving voltage of oil feeder con-

trol valve in engine ECU is abnormal.

PROBABLE CAUSES

• Failed oil feeder control valve

• Open/short circuit in or damage to the oil feeder 

control valve circuit, or loose connector contact

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. Connector check: A-101 oil feeder 
control valve connector

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair or replace.

STEP 2. Check oil feeder control valve.

• Check oil feeder control valve (Refer to 

P.13B-369

).

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the oil feeder control valve.

STEP 3. Perform voltage measurement at A-101 
oil feeder control valve connector.

Disconnect 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 5.

NO : 

Go to Step 4.

AK402099

1

2

AC

Harness side 
connector

Connector: A-101

A-101(B)

AK402099

1

2

AC

Harness side 
connector

Connector: A-101

A-101(B)

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-190

STEP 4. 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 
B-106 (terminal No. 4) engine control relay 
connector and A-101 (terminal No. 1) oil 
feeder control valve connector

• Check power supply line for 

open/short circuit.

NO : 

Repair or replace.

STEP 5. Perform voltage measurement at A-114 
engine-ECU connector.

Disconnect connector and measure at harness side.

• Ignition switch: ON

• Voltage between terminal No. 52 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Go to Step 6.

3

2

1

4

AK402084

J/B side 
connector

B-106

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

AC

AK402099

1

2

AC

Harness side 
connector

Connector: A-101

A-101(B)

AK402745

6

4

2

5

3

1

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52

53

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63

64

65

66

L

AF

A-114

Connector: 

A-114

Harness side connector

Engine-ECU

Battery

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-191

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

Q: Is the check result normal?

YES : 

Check and repair the harness between 

A-101 (terminal No. 2) oil feeder control 
valve connector and A-114 (terminal No. 52) 
engine-ECU connector.

• Check output line for open/short 

circuit.

NO : 

Repair or replace.

STEP 7. Connector check: B-106 engine control 
relay connector

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair or replace.

AK402745

6

4

2

5

3

1

9

7

8

10

11

12

13

14

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17

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52

53

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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

AK402099

1

2

AC

Harness side 
connector

Connector: A-101

A-101(B)

3

2

1

4

AK402084

J/B side 
connector

B-106

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

AC

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-192

STEP 8. Check harness between B-106 (terminal 
No. 4) engine control relay connector and A-101 
(terminal No. 1) oil feeder control valve 
connector.

NOTE: Before checking harness, check intermediate 
connectors A-17 and B-112, and repair them if nec-
essary.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair.

STEP 9. Connector check: A-114 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 10.

NO : 

Repair or replace.

3

2

1

4

AK402084

J/B side 
connector

B-106

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

AC

AK402099

1

2

AC

Harness side 
connector

Connector: A-101

A-101(B)

AK402745

6

4

2

5

3

1

9

7

8

10

11

12

13

14

15

16

17

18

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21

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51

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66

L

AF

A-114

Connector: 

A-114

Harness side connector

Engine-ECU

Battery

Main

Index

Group

TOC

 

 

 

 

 

 

 

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