Mitsubishi Outlander (2003+). Manual - part 82

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-191

COMMENT ON TROUBLE SYMPTOM

œ

Engine-ECU has detected failed sensor or failed 
actuator. Or failure is possibly caused by short 
circuit or other faults.

PROBABLE CAUSE

œ

Short circuit in between engine warning lamp and 
engine-ECU circuit.

œ

Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1: MUT-II self-diag code

Q: Diagnosis code set?

YES : 

Inspection chart for diagnosis code (Refer 

to 

3

13A



.)

NO : 

Go to Step 2 .

STEP 2: Connector check: C-135 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 3 .

NO : 

Repair

STEP 3: Measure voltage at C-135 engine-ECU 
connector.

œ

Disconnect connector, and measure at the har-
ness side.

œ

Ignition switch: ON

œ

Voltage between terminal No. 36 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 4 .

NO : 

Check intermediate connector C-105, and 

repair if necessary. If intermediate 
connector is normal, check and repair 
harness between C-05 (terminal No. 14) 
combination meter connector and C-135 
(terminal No. 22) engine-ECU connector.

œ

Check output line for short circuit.

AK300256

34 33 32

36 35

37

42

45

31

39

38

46

40

41

43

44

AB

CONNECTOR: C-135

C-135

Harness side connector

AK300256

34 33 32

36 35

37

42

45

31

39

38

46

40

41

43

44

AB

CONNECTOR: C-135

C-135

Harness side connector

AK300305

G

G

22

4

1

2

15 14 1312

3

17

11

8

9

10

6

7

5

19

16

2120

18

AB

Harness side connector

CONNECTOR: C-05

C-05 (L)

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-192

STEP 4: Check the trouble symptoms.

Q: Does trouble symptom persist?

YES : 

Replace engine-ECU.

NO : 

Intermittent malfunction (Refer to GROUP 
00 

-

 How to Use 

Troubleshooting/Inspection Service Points 

3

00



).

Inspection Procedure 5: Starting impossible (No Initial Combustion)

COMMENT ON TROUBLE SYMPTOM

œ

Failure is possibly caused by failed starter itself 
or failed related circuit.

PROBABLE CAUSE

œ

Failed battery

œ

Failed starter motor

œ

Open/short circuit in starter associated circuit or 
loose connector contact

DIAGNOSIS PROCEDURE

STEP 1: Check battery voltage.

œ

Measure battery voltage at cranking.

OK: 8 V or higher

Q: Is the check result normal?

YES : 

Go to Step 2 .

NO : 

Check battery (Refer to GROUP 54A 

-

 

Battery 

-

 On-vehicle Service 

-

 Battery Test 

3

54A



).

STEP 2: MUT-II data list

œ

Item 18: Cranking signal

OK: 

ON (Ignition switch: ST)
OFF (Ignition switch: ON)

Q: Is the check result normal?

YES : 

Go to Step 8 .

NO : 

Go to Step 3 .

STEP 3: Connector check: C-137 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 4 .

NO : 

Repair.

AK300254

82

78

8180

89

90

91

92

79

87

71

74 73 72

76 75

77

85

88

83

84

86

AB

CONNECTOR: C-137

C-137

Harness side connector

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-193

STEP 4: Measure voltage at C-137 engine-ECU 
connector.

œ

Disconnect connector, and measure at the har-
ness side.

œ

Ignition switch: ST

œ

Voltage between terminal No. 71 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 7 .

NO : 

Go to Step 5 .

STEP 5: Connector check: C-303 ignition switch 
connector

Q: Is the check result normal?

YES : 

Go to Step 6 .

NO : 

Repair.

STEP 6: Check ignition switch.

œ

Check ignition switch (Refer to GROUP 54A 

-

 

Ignition Switch 

-

 Ignition Switch 

3

54A



).

Q: Is the check result normal?

YES : 

Check intermediate connectors C-106 and 

B-19, and repair if necessary. If intermediate 
connector are normal, check and repair 
harness between C-137 (terminal No. 71) 
inhibitor switch connector and C-303 
(terminal No. 5) ignition switch connector.

œ

Check power supply line for 
open/short circuit.

NO : 

Replace ignition switch.

AK300254

82

78

8180

89

90

91

92

79

87

71

74 73 72

76 75

77

85

88

83

84

86

AB

CONNECTOR: C-137

C-137

Harness side connector

1

2

3

4

5

6

AK300304

CONNECTOR: C-303

C-303

Harness side
connector

AB

AK300254

82

78

8180

89

90

91

92

79

87

71

74 73 72

76 75

77

85

88

83

84

86

AB

CONNECTOR: C-137

C-137

Harness side connector

1

2

3

4

5

6

AK300304

CONNECTOR: C-303

C-303

Harness side
connector

AB

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-194

STEP 7: Connector check: C-303 ignition switch 
connector and B-26 starter connector

Q: Is the check result normal?

YES : 

Check intermediate connectors C-106 and 

B-19, and repair if necessary. If intermediate 
connectors are normal, check and repair 
harness between C-303 (terminal No. 5) 
ignition switch connector and B-26 (terminal 
No. 1) starter connector.

œ

Check output line for short circuit.

NO : 

Repair.

STEP 8: Check connector: B-26 starter connector

Q: Is the check result normal?

YES : 

Go to Step 9 .

NO : 

Repair.

STEP 9: Measure voltage at B-26 starter 
connector.

œ

Disconnect connector, and measure at the har-
ness side.

œ

Ignition switch: ST

œ

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 .

1

2

3

4

5

6

AK300304

CONNECTOR: C-303

C-303

Harness side
connector

AB

AK300306

1

AB

Harness side
connector

CONNECTOR: B-26

B-26 (B)

AK300306

1

AB

Harness side
connector

CONNECTOR: B-26

B-26 (B)

AK300306

1

AB

Harness side
connector

CONNECTOR: B-26

B-26 (B)