Mitsubishi Montero (2004+). Manual - part 233

 

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Mitsubishi Montero (2004+). Manual - part 233

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-419

STEP 9. Check connector D-134 at PCM for damage.

Q: Is the connector in good condition?

YES : Go to Step 10.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 11.

STEP 10. Check for open circuit and harness damage 
between fuel tank temperature sensor connector G-03 and 

PCM connector D-134.

AK201166

61

62

63

64

65

66

67

68

69

70

71

76

77

78

79

85

86

87

80

72

73

74

75

81

82

83

84

88

89

CONNECTOR: D-134

AB

PCM

D-134(GR)

HARNESS CONNECTOR: 
COMPONENT SIDE

AK200959

1

2

3

AB

CONNECTOR: G-03

G-03(B)

HARNESS 
CONNECTOR: 
COMPONENT SIDE

AK201166

61

62

63

64

65

66

67

68

69

70

71

76

77

78

79

85

86

87

80

72

73

74

75

81

82

83

84

88

89

CONNECTOR: D-134

AB

PCM

D-134(GR)

HARNESS CONNECTOR: 
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-420

NOTE: Check harness after checking intermediate connector 
E-113, D-111 and F-07. If the intermediate connectors are dam-
aged, repair or replace it. Refer to GROUP 00E, Harness Con-
nector Inspection 

P.00E-2

. Then go to Step 11.

Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 11.
NO :  Repair it. Then go to Step 11.

STEP 11. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to 

Diagnostic Function 

− OBD-II Drive Cycle − Procedure 6 − 

Other Monitor 

P.13A-4

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0183 set?

YES : Retry the troubleshooting.
NO :  The inspection is complete.

Continue

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-421

13A

DTC P0201: Injector Circuit Malfunction-Cylinder 1, DTC P0202: Injector Circuit Malfunction-Cylinder 
2, DTC P0203: Injector Circuit Malfunction-Cylinder 3, DTC P0204: Injector Circuit Malfunction- 
Cylinder 4, DTC P0205: Injector Circuit Malfunction-Cylinder 5, DTC P0206: Injector Circuit 
Malfunction-Cylinder 6 

WHITE-

BL

ACK

WHITE-

BL

ACK

RED

RED

RED

RED

RED

RED

AK201140

YELL

OW

-

BL

UE

YELL

OW

-

BL

UE

YELL

OW

-

RED

YELL

OW

-

RED

LIGHT GREEN

ORANGE

ORANGE

BL

UE

BL

UE

WHITE-

RED

WHITE-

RED

LIGHT GREEN

RED

RED

14

1 2
3 4

B-22X

3

2

4

1

MFI
RELAY

8

7

6

5

1 2 3 4

B-44

MU802609

1

1

1

1

21

1

2

1

6

POWERTRAIN
CONTROL
MODULE (PCM)

2

2

2

2

2

2

2

1

7

6

5

5

BATTERY

1 2

B-35

(MU802047)

1 2

B-11

(MU802047)

2

1

B-03

(MU802047)

INJECTOR
No. 3

INJECTOR
No. 4

INJECTOR
No. 5

INJECTOR
No. 6

1 2

B-01

(MU802047)

2

1

B-33

(MU802047)

1 2

B-02

(MU802047)

1

INJECTOR
No. 2

3

INJECTOR
No. 1

8

Injector Circuit

1

2

3

5

6 7 8 9

4

20

21 22

232425

2627

10111213

14 15

16 1718

19

D-132

(MU803802)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-422

.

CIRCUIT OPERATION

• The injector power is supplied from the MFI relay 

(terminal No. 1).

• The PCM controls the injector by turning the 

power transistor in the PCM "ON" and "OFF".

.

TECHNICAL DESCRIPTION

• The amount of fuel injected by the injector is con-

trolled by the amount of continuity time the coil is 
grounded by the PCM.

• A surge voltage is generated when the injectors 

are driven and the current flowing to the injector 
coil is shut off.

• The PCM checks this surge voltage.

.

DESCRIPTIONS OF MONITOR METHODS
Off-surge does not occur after injector is operated.

.

MONITOR EXECUTION
Continuous

.

MONITOR EXECUTION CONDITIONS (Other 
monitor and Sensor)

Other Monitor (There is no temporary DTC stored 

in memory for the item monitored below)

• Not applicable

Sensor (The sensor below is determined to be 

normal)

• Not applicable

.

AK201039

MFI RELAY

B-22X

AB

CONNECTOR: B-22X

AK201038

CONNECTOR: D-132

AB

PCM

D-132(GR)

AK201056

B-03(GR)

B-11(GR)

B-35(GR)

B-33(GR)

B-02(GR)

B-01(GR)

CONNECTORS: B-01, B-02, B-03, B-11, 

B-33, B-35

AB

AK201050

B-44(B)

AB

CONNECTOR: B-44

 

 

 

 

 

 

 

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