Mitsubishi Montero Sport (2004+). Manual - part 266

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-477

STEP 9. Check for short circuit to ground between 
camshaft position sensor connector A-42 (terminal No. 2) 
and PCM connector C-90 (terminal No. 56).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 18.
NO :  Repair it. Then go to Step 18.

AK200488

1

2

3

AB

CONNECTOR: A-42

A-42(GR)

HARNESS 
CONNECTOR: 
COMPONENT SIDE

CAMSHAFT
POSITION
SENSOR

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-478

STEP 10. Measure the power supply voltage at camshaft 
position sensor connector A-42.
(1) Disconnect the connector A-42 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 12.
NO :  Go to Step 11.

STEP 11. Check connector C-59 at MFI relay for damage.
Q: Is the connector in good condition?

YES : Check connector C-14 at intermediate connector for 

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

P.00E-2

. If intermediate connector is in good 

condition, repair harness wire between MFI relay 
connector C-59 (terminal No. 1) and camshaft 
position sensor connector A-42 (terminal No. 3) 
because of open circuit or short circuit to ground. 
Then go to Step 18.

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

Connector Inspection 

P.00E-2

. Then go to Step 18.

AK200488

1

2

3

AB

CONNECTOR: A-42

A-42(GR)

HARNESS 
CONNECTOR: 
COMPONENT SIDE

CAMSHAFT
POSITION
SENSOR

AK000011

A-42 HARNESS 
CONNECTOR: 
COMPONENT SIDE

3 2 1

AF

AK200023

2 1

3

4

CONNECTOR: C-59

AB

C-59

HARNESS 
CONNECTOR:
COMPONENT 
SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-479

STEP 12. Check for continuity at camshaft position sensor 
connector A-42.
(1) Disconnect the connector A-42 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 13.
NO :  Repair harness wire between camshaft position 

sensor connector A-42 (terminal No. 1) and ground 
because of open circuit or harness damage. Then go 
to Step 18.

STEP 13. Check connector C-59 at the MFI relay for 
damage.
Q: Is the connector in good condition?

YES : Go to Step 14.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 18.

AK200488

1

2

3

AB

CONNECTOR: A-42

A-42(GR)

HARNESS 
CONNECTOR: 
COMPONENT SIDE

CAMSHAFT
POSITION
SENSOR

AK303788

A-42 HARNESS 
CONNECTOR: 
COMPONENT SIDE

3 2 1

AB

AK200023

2 1

3

4

CONNECTOR: C-59

AB

C-59

HARNESS 
CONNECTOR:
COMPONENT 
SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-480

STEP 14. Check connector C-90 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 18.

STEP 15. Check for harness damage between MFI relay 
connector C-59 (terminal No. 1) and camshaft position 
sensor connector A-42 (terminal No. 3).

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

AK200023

2 1

3

4

CONNECTOR: C-59

AB

C-59

HARNESS 
CONNECTOR:
COMPONENT 
SIDE

AK200488

1

2

3

AB

CONNECTOR: A-42

A-42(GR)

HARNESS 
CONNECTOR: 
COMPONENT SIDE

CAMSHAFT
POSITION
SENSOR