Mitsubishi Montero (2004+). Manual — part 248

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-479

STEP 11. Measure the power supply voltage at crankshaft
position sensor harness side connector B-36.
(1) Disconnect the connector B-36 and measure at the harness

side.

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

(3) Measure the voltage between terminal No. 3 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 13.
NO : Go to Step 12.

STEP 12. Check connector B-22X at MFI relay for damage.
Q: Is the connector in good condition?

YES : Repair harness wire between MFI relay connector

B-22X (terminal No. 1) and crankshaft position sensor
connector B-36 (terminal No. 3) because of open
circuit or short circuit to ground. Then go to Step 21.

NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 21.

AK200962

1

2

3

AB

CONNECTOR: B-36

B-36(B)

CRANKSHAFT
POSITION
SENSOR

HARNESS
CONNECTOR:
COMPONENT SIDE

AKX01417AJ

2 1

3

B-36 HARNESS
CONNECTOR:
COMPONENT SIDE

AK200951

2 1

3

4

B-22X

AB

CONNECTOR: B-22X

HARNESS
CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-480

STEP 13. Check the continuity at crankshaft position
sensor harness side connector B-36.
(1) Disconnect the connector B-36 and measure at the harness

side.

(2) Check for the continuity between terminal No. 1 and

ground.

• Should be less than 2 ohms.

Q: Does continuity exist?

YES : Go to Step 16.
NO : Go to Step 14.

STEP 14. Check connector D-134 at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 15.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 21.

AK200962

1

2

3

AB

CONNECTOR: B-36

B-36(B)

CRANKSHAFT
POSITION
SENSOR

HARNESS
CONNECTOR:
COMPONENT SIDE

AKX01418 AK

2 1

3

B-36 HARNESS
CONNECTOR:
COMPONENT SIDE

AK201166

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85

86

87

80

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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-481

STEP 15. Check for open circuit and harness damage
between crankshaft position sensor connector B-36
(terminal No. 1) and PCM connector D-134 (terminal No.
88).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 21.
NO : Repair it. Then go to Step 21.

AK200962

1

2

3

AB

CONNECTOR: B-36

B-36(B)

CRANKSHAFT
POSITION
SENSOR

HARNESS
CONNECTOR:
COMPONENT SIDE

AK201166

61

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71

76

77

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79

85

86

87

80

72

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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-482

STEP 16. Check connector B-22X at the MFI relay for
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 17.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 21.

STEP 17. Check connector D-134 at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 18.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 21.

AK200951

2 1

3

4

B-22X

AB

CONNECTOR: B-22X

HARNESS
CONNECTOR:
COMPONENT SIDE

AK201166

61

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66

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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