Mitsubishi Montero Sport (2004+). Manual — part 353

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-825

STEP 6. Check connector B-01 at transmission range
switch for damage.
Q: Is the connector in good condition?

YES : Go to Step 7.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then confirm that the

malfunction symptom is eliminated.

STEP 7. Check the transmission range switch.
Refer to GROUP 23A, On-vehicle Service

− Essential Service −

Transmission range switch continuity check

P.23A-435

.

Q: Are there any abnormalities?

YES : Go to Step 8.
NO : Repair or replace it. Then confirm that the malfunction

symptom is eliminated.

STEP 8. Measure the power supply voltage at transmission
range switch connector B-01.
(1) Disconnect the connector B-01 and measure at the harness

side.

(2) Turn the ignition switch to the "START" position.

(3) Measure the voltage between terminal No. 10 and ground.

• Voltage should be battery positive voltage.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is battery positive voltage (approximately 12 volts)

present?
YES : Go to Step 9.
NO : Check connector C-30 and C-41 at intermediate

connector for damage, and repair or replace as
required. Refer to GROUP 00E, Harness Connector
Inspection

P.00E-2

. If intermediate connector are in

good condition, repair harness wire between ignition
switch connector D-15 (terminal No. 5) and
transmission range position switch connector B-01
(terminal No. 10) because of open circuit. Then
confirm that the malfunction symptom is eliminated.

AK200050

5

10

4 3 2 1

6

7

8

9

AB

CONNECTOR: B-01

B-01(B)

HARNESS CONNECTOR:
COMPONENT SIDE

AK200050

5

10

4 3 2 1

6

7

8

9

AB

CONNECTOR: B-01

B-01(B)

HARNESS CONNECTOR:
COMPONENT SIDE

AK000651

5

10

4 3 2 1

6

7

8

9

B-01 HARNESS
CONNECTOR:
COMPONENT SIDE

AD

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-826

STEP 9. Check for open circuit and short circuit to ground
and harness damage between transmission range switch
connector B-01 (terminal No. 9) and starter relay connector
A-50X (terminal No. 3).

NOTE: Check harness after checking intermediate connector
C-30 and C-41. If intermediate connector are damaged, repair
or replace them. Refer to GROUP 00E, Harness Connector
Inspection

P.00E-2

. Then confirm that the malfunction symp-

tom is eliminated.
Q: Is the harness wire in good condition?

YES : Go to Step 10.
NO : Repair it. Then confirm that the malfunction symptom

is eliminated.

STEP 10. Check connector C-90 at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 11.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then confirm that the

malfunction symptom is eliminated.

AK200050

5

10

4 3 2 1

6

7

8

9

AB

CONNECTOR: B-01

B-01(B)

HARNESS CONNECTOR:
COMPONENT SIDE

AK303397

1

4

3

2

AB

CONNECTOR: A-50X

A-50X

HARNESS CONNECTOR:
COMPONENT SIDE

AK103762

42

43

48

49

50

51

52

53

54

55

56

57

46 45 44

58

59

60

61

62

63

64

65

66

47

41

AB

CONNECTOR: C-90

C-90(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-827

STEP 11. Check for open circuit and short circuit to ground
and harness damage between starter relay connector
A-50X (terminal No. 2) and PCM connector C-90 (terminal
No. 58).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then confirm that the malfunction

symptom is eliminated.

NO : Repair it. Then confirm that the malfunction symptom

is eliminated.

AK303397

1

4

3

2

AB

CONNECTOR: A-50X

A-50X

HARNESS CONNECTOR:
COMPONENT SIDE

AK103762

42

43

48

49

50

51

52

53

54

55

56

57

46 45 44

58

59

60

61

62

63

64

65

66

47

41

AB

CONNECTOR: C-90

C-90(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-828

INSPECTION PROCEDURE 31: Ignition Circuit System.

BL

ACK

BL

ACK

-

WHITE

BL

ACK

-

WHITE

BL

ACK

-

WHITE

BL

ACK

-W

HITE

BL

UE

BL

ACK

-YELL

OW

WHITE

WHITE

WHITE

BL

ACK

-

WHITE

BL

ACK

-

WHITE

BROWN

BROWN-

WHITE

BROWN-

RED

AK303655

Ignition Circuit

IG1

ST

LOCK

ACC

IG2

2

IGNITION
SWITCH

R

12

3 4 5 6

1 2

A-05
(MU802725)

13

11 12

A-06
(MU802723)

2

1

A-45

A-06

A-05

1 2

A-44

1 2

A-46

1

1

1

2

13

12

11

6

43

11

13

2

2

IGNITION
COIL

2

5

3

1

IGNITION POWER
TRANSISTOR

POWERTRAIN
CONTROL
MODULE (PCM)

C-89

SPARK
PLUG

No.6

No.3

No.5

No.2

No.4

No.1

4

3

JUNCTION
BLOCK

4

TO TACHOMETER

24

23

25

ENGINE SPEED
DETECTION
CONNECTOR

1

A-37

JOINT
CONNECTOR (4)

1

26

1 2 3
4 5 6

D-15

1
3

2
4

D-08
(MU801342)

1

10

2 3 4 5 6 7 8 9

11

12 13 14 15 16 17 18 19 20 21 22

23 24 25 26 27 28 29 30 31 32 33

C-71

47

41

42 43

48 49 50 51 52 53 54 55 56 57

46

45

44

58

59

60 61 62 63

64 65 66

C-90
(MU803781)

10

2

3 4

5 6

7 8

9

11 12 13 14 15 16 17 18 19 20

30

21 22 23

24

25

26 27 28 29

31 32 33

34 35

1

C-89
(MU803784)

WHITE

WHITE