Mitsubishi Outlander (2003+). Manual — part 80

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-183

STEP 2: Connector check: C-136 engine-ECU
connector

Q: Is the check result normal?

YES :

Go to Step 3 .

NO :

Repair.

STEP 3: Check harness between C-24 (terminal
No. 7) diagnosis connector and C-136 (terminal
No. 62) engine-ECU connector.

NOTE: Before Checking harness, check intermedi-
ate connectors C-105 and C-02, and repair if neces-
sary.

œ

Check communication line for open/short circuit
and damage.

Q: Is the check result normal?

YES :

Go to Step 4 .

NO :

Repair.

STEP 4: Check the trouble symptom.

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

).

AK300268

58

60

61

53 52 51

55 54

56

59

62

57

AB

CONNECTOR: C-136

C-136

Harness side connector

AK203424

1 2 3 4 5 6

12

11

10

1516

14

13

9

7 8

Harness side connector

AE

Connector: C-24

C-24 (B)

AK300268

58

60

61

53 52 51

55 54

56

59

62

57

AB

CONNECTOR: C-136

C-136

Harness side connector

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-184

Inspection Procedure 3: The Engine Warning Lamp Does not Illuminate Right after the Ignition Switch
is Turned The "ON" Position

OPERATION

œ

Battery voltage is applied to engine warning lamp
of combination meter connector (terminal No. 42)
from ignition switch.

œ

Engine-ECU (terminal No. 36) makes power tran-
sistor in unit be in "ON" position, and that makes
currents go on engine warning lamp of combina-
tion meter connector (terminal No. 14).

AK300302

1 2 3
4 5 6

34

33

32

36

35

37

42

45

31

39

38

46

40 41

43 44

31

G

G

32 33 34 35 36 37 38 39 40 41

42 43 44 45 46 47 48 49 50 51 52

G

G

12

8

11

10

19 20 2122

9

17

1

4

3

2

6

5

7

15

18

1314

16

R

IG2

ST

LOCK

ACC

IG1

2

7.5A

C-203

C-205

C-105

Ignition switch

C-303

2

L-B

B-W

R-W

R-W

6

25

J/B

C-04

C-05

Malfunction indicator lamp
(Engine warning lamp)

C-135

Engine-ECU

7

36

Malfunction indicator lamp (Engine warning lamp) circuit

42

14

AB

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

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-185

COMMENTS ON TROUBLE SYMPTOM

œ

Engine-ECU turns on engine warning lamp for 5
seconds to check for burnt-out bulb immediately
after ignition switch is turned to ON.

œ

If engine warning lamp is not lit just after turning
ignition switch to "ON" position, failure is possibly
caused by burn-out bulb, open/short circuit or
other faults.

PROBABLE CAUSE

œ

Engine warming lamp bulb burnt out

œ

Failed ignition switch

œ

Open/short circuit in engine warning lamp circuit
for or loose connector contact

œ

Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1: Check engine start-up.

Q: Is engine started?

YES :

Go to Step 2 .

NO :

Check engine-ECU power supply, engine
control relay and ignition switch IG1 system
(Refer to Inspection Procedure 23

3

13A

).

STEP 2: Check engine warning lamp for burnt-
out bulb.

Q: Is the check result normal?

YES :

Go to Step 3 .

NO :

Replace engine warning lamp.

STEP 3: Connector check: C-04 combination
meter connector

Q: Is the check result normal?

YES :

Go to Step 4 .

NO :

Repair

STEP 4: Measure voltage at C-04 combination
meter connector.

œ

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

œ

Ignition switch: ON

œ

Voltage between terminal No. 42 and earth.

OK: System voltage

Q: Is the check result normal?

YES :

Go to Step 6 .

NO :

Go to Step 5 .

AK300303

41

G

G

40 39 38 37 36 35 34 33 32 31

52 51 50 49 48 47 46 45 44 43 42

AB

Harness side connector

CONNECTOR: C-04

C-04

AK300303

41

G

G

40 39 38 37 36 35 34 33 32 31

52 51 50 49 48 47 46 45 44 43 42

AB

Harness side connector

CONNECTOR: C-04

C-04

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-186

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

Q: Is the check result normal?

YES :

Check intermediate connectors C-203 and

C-205, and repair if necessary. If
intermediate connectors are normal, check
and repair harness between C-04 (terminal
No. 42) combination meter connector and
C-303 (terminal No. 2) ignition switch
connector.

œ

Check power supply line for
open/short circuit.

NO :

Repair

STEP 6: Connector check: C-135 engine-ECU
connector

Q: Is the check result normal?

YES :

Go to Step 7 .

NO :

Repair.

STEP 7: 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 9 .

NO :

Go to Step 8 .

1

2

3

4

5

6

AK300304

CONNECTOR: C-303

C-303

Harness side
connector

AB

AK300303

41

G

G

40 39 38 37 36 35 34 33 32 31

52 51 50 49 48 47 46 45 44 43 42

AB

Harness side connector

CONNECTOR: C-04

C-04

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