Mitsubishi Outlander (2003+). Manual - part 75

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-163

STEP 4. Connector check: C-135 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Check and repair harness between B-28 

(terminal No. 1) power steering fluid 
pressure switch connector and C-135 
(terminal No. 37) engine-ECU connector.

œ

Check output line for open circuit.

NO : 

Repair.

STEP 5. Connector check: C-135 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 6 .

NO : 

Repair.

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

AK300289

1

AB

Harness side
connector

CONNECTOR: B-28

B-28 (B)

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

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-164

STEP 6. Check harness between B-28 (terminal 
No. 1) power steering fluid pressure switch 
connector and C-135 (terminal No. 37) engine-
ECU connector.

œ

Check output line for short circuit.

Q: Is the check result normal?

YES : 

Go to Step 7 .

NO : 

Repair.

STEP 7. MUT-II Data List

œ

Refer to Data list reference table 

3

13A



.

a. Item 27: Power steering fluid pressure switch

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

-

 How to Use 

Troubleshooting/Inspection Service Points 

3

00



).

NO : 

Replace engine-ECU.

STEP 8. Measure voltage at C-135 engine-ECU 
connector.

œ

Measure engine-ECU terminal voltage.

œ

Engine: Idling

œ

Voltage between terminal No. 37 and earth.

OK: 

System voltage (Steering wheel: Stationary)
1 V or less (Steering wheel: Turned)

Q: Is the check result normal?

YES : 

Go to Step 11 .

NO : 

Go to Step 9 .

STEP 9. Connector check: C-135 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 10 .

NO : 

Repair.

AK300289

1

AB

Harness side
connector

CONNECTOR: B-28

B-28 (B)

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

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

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-165

STEP 10. Check harness between B-28 (terminal 
No. 1) power steering fluid pressure switch 
connector and C-135 (terminal No. 37) engine-
ECU connector.

œ

Check output line for damage.

Q: Is the check result normal?

YES : 

Replace power steering fluid pressure 

switch.

NO : 

Repair.

STEP 11. Connector check: C-135 engine-ECU 
connector 

Q: Is the check result normal?

YES : 

Go to Step 7 .

NO : 

Repair.

AK300289

1

AB

Harness side
connector

CONNECTOR: B-28

B-28 (B)

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

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-166

Code No. P0622: Alternator FR Terminal System

OPERATION

œ

The energized state of the alternator field coil is 
inputted from the alternator (terminal No. 4) to the 
engine-ECU (terminal No. 41).

FUNCTION

œ

A signal of the power supply duty ratio for the 
alternator field coil is inputted to the engine-ECU.

œ

In response to the signal, the engine-ECU 
detects the alternator output current and controls 
the idling speed according to the output current 
(electric load).

TROUBLE JUDGMENT

Check Condition

œ

Engine speed is 50 r/min or more.

Judgment Criterion

œ

Input voltage from alternator FR terminal is the 
system voltage or more for 20 seconds.

PROBABLE CAUSE

œ

Alternator FR terminal circuit open circuited

œ

Failed engine-ECU

AK300290

4

3

2

1

34

33

32

36

35

37

42

45

31

39

38

46

40 41

43 44

Wire colour code
B: Black  LG: Light green  G: Green   L: Blue   W: White   Y: Yellow   SB: Sky blue   BR: Brown    O: Orange   GR: Gray
R: Red   P: Pink   V: Violet

AB

Engine-ECU

Alternator

      B-30
(MU802046)

41

Y-B

Y-B

C-135

B-19
1

4

Alternator circuit

IC Voltage 
regulator