Mitsubishi Montero Sport (2004+). Manual - part 170

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-93

STEP 2. Check the intake air temperature sensor.
(1) Disconnect the intake air temperature sensor connector 

A-01

(2) Measure the resistance between intake air temperature 

sensor side connector terminal No. 5 and No. 6.

(3) Measure resistance while heating the sensor using a hair 

drier.

Standard value:

13 

− 17 kΩ [at −20°C (−4°F)]

5.3 

− 6.7 kΩ [at 0°C (32°F)]

2.3 

− 3.0 kΩ [at 20°C (68°F)]

1.0 

− 1.5 kΩ [at 40°C (104°F)]

0.56 

− 0.76 kΩ [at 60°C (140°F)]

0.30 

− 0.42 kΩ [at 80°C (176°F)]

Q: Is the resistance at the standard value?

YES : Go to Step 3.
NO :  Replace the volume airflow sensor. Then go to Step 9.

STEP 3. Check connector A-01 at the intake air 
temperature sensor for damage.
Q: Is the connector in good condition?

YES : Go to Step 4.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 9.

AK103913

3

4

5

1

2

6

7

CONNECTOR: A-01

A-01(B)

AB

HARNESS 
CONNECTOR: 
COMPONENT SIDE

AK000319AB

1 2 3 4 5 6 7

INTAKE AIR TEMPERATURE
SENSOR SIDE CONNECTOR

AKX01621 AB

INTAKE AIR
TEMPERATURE
SENSOR

AK103913

3

4

5

1

2

6

7

CONNECTOR: A-01

A-01(B)

AB

HARNESS 
CONNECTOR: 
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-94

STEP 4. Measure the continuity at intake air temperature 
sensor harness side connector A-01.
(1) Disconnect the connector A-01 and measure at the harness 

side.

(2) Check for the continuity between terminal No. 5 and 

ground.

• Should be less than 2 ohms.

Q: Does continuity exist?

YES : Go to Step 7.
NO :  Go to Step 5.

STEP 5. Check connector C-90 at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 6.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 9.

AK103913

3

4

5

1

2

6

7

CONNECTOR: A-01

A-01(B)

AB

HARNESS 
CONNECTOR: 
COMPONENT SIDE

AKX01409AM

A-01 HARNESS CONNECTOR: 
COMPONENT SIDE

7 6 5 4 3 2 1

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-95

STEP 6. Check for harness damage between intake air 
temperature sensor connector A-01 (terminal No. 5) and 
PCM connector C-90 (terminal No. 57) .
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 9.
NO :  Repair it. Then go to Step 9.

STEP 7. Check connector C-90 at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 8.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 9.

AK103913

3

4

5

1

2

6

7

CONNECTOR: A-01

A-01(B)

AB

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

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-96

STEP 8. Check for harness damage between intake air 
temperature sensor connector A-01 (terminal No. 6) and 
PCM connector C-90 (terminal No. 64) .
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 9.
NO :  Repair it. Then go to Step 9.

STEP 9. 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 P0111 set?

YES : Repeat the troubleshooting.
NO :  The procedure is complete.

AK103913

3

4

5

1

2

6

7

CONNECTOR: A-01

A-01(B)

AB

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