Mitsubishi Montero Sport (2004+). Manual — part 159

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-49

(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 12.
NO : Go to Step 10.

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 go to Step 13.

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-50

STEP 11. Check for open circuit and harness damage
between volume airflow 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 13.
NO : Repair it. Then go to Step 13.

STEP 12. Check connector C-90 at PCM for damage.
Q: Is the connector in good condition?

YES : Replace the volume airflow sensor. Then go to Step

13.

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

Connector Inspection

P.00E-2

. Then go to Step 13.

STEP 13. 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 P0102 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

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-51

DTC P0106: Manifold Absolute Pressure Circuit Range/Performance Problem

BL

ACK

BL

ACK

2 3

1

GREEN-

YELL

OW

YELL

OW

AK301860

Manifold Absolute Pressure Sensor Circuit

A-12
(MU802723)

1

POWERTRAIN CONTROL MODULE (PCM)

3

2

MANIFOLD ABSOLUTE
PRESSURE SENSOR

12

17

91

57

46

5V

C-90

71

76

77

72 73 74

75

79 80

78

81

87 88

89

91

90

92

97

98

82

93

83

94

84 85

95

86

96

C-91
(MU803782)

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)

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

C-91

JOINT
CONNEC-
TOR (4)

AK200033AC

CONNECTOR: A-12

MANIFOLD
ABSOLUTE
PRESSURE
SENSOR

A-12(B)

AK103738AE

CONNECTORS: C-90, C-91

PCM

C-91(GR)

C-90(GR)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-52

.

CIRCUIT OPERATION

• A 5-volt voltage is supplied to the manifold abso-

lute pressure sensor power terminal (terminal No.
3) from the PCM (terminal No. 46). The ground
terminal (terminal No. 2) is grounded with PCM
(terminal No. 57).

• A voltage that is proportional to the intake mani-

fold pressure is sent to the PCM (terminal No. 91)
from the manifold absolute pressure sensor out-
put terminal (terminal No. 1).

.

TECHNICAL DESCRIPTION

• The manifold absolute pressure sensor outputs a

voltage which corresponds to the intake manifold
pressure.

• The PCM checks whether this voltage is within a

specified range.

.

DESCRIPTIONS OF MONITOR METHODS
Compare load value with manifold absolute pressure

sensor output voltage.

.

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)

• Engine coolant temperature sensor

• Throttle position sensor

.

AK103912AB

CONNECTOR: C-71

C-71