Mitsubishi Eclipse. Manual - part 300

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-693

STEP 5. Check connector C-60 at ECM <M/T> or connector 
C-54 at PCM <A/T> for damage.
Q: Is the harness connector in good condition?

YES : Replace the ECM or PCM. Then go to Step 6.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 6.

AK300415

82

78

8180

89

90

91

92

79

87

71

74 73 72

76 75

77

85

88

83

84

86

CONNECTOR: C-60 <M/T>

AB

C-60 (G)

HARNESS CONNECTOR:
COMPONENT SIDE

AK300412

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

C-54 (GR)

CONNECTOR: C-54 <A/T>

AB

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-694

STEP 6. Using scan tool MB991958, read the diagnostic 
trouble code (DTC).

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Read the DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC P1603 set?

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

AK300810

AB

MB991911

16-PIN

MB991827

MB991824 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-695

DTC P2227: Barometric Pressure Circuit Range/Performance Problem

AK300332

7

4 5 6

1 2 3

GREEN-

YELL

OW

GREEN-

WHITE

BROWN

C-54 <A/T>
(MU803781)

C-60 <M/T>
(MU803772)

ENGINE CONTROL
MODULE (ECM) <M/T>
OR
POWERTRAIN CONTROL
MODULE (PCM) <A/T>

81 <M/T>*1
46 <A/T>*3

5 V

85 <M/T>*1
55 <A/T>*3

40 <M/T>*2
16 <A/T>*4

B-14

BAROMETRIC PRESSURE SENSOR
(INCORPORATED IN VOLUME 
AIRFLOW SENSOR)

1

2

5

82

78

81

80

89 90 91 92

79

87

71

74

73

72

76

75

77

85

88

83 84

86

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

Barometric Pressure Sensor Circuit

2

3 4

5 6

7 8

9

11 12 13 14 15 16 17 18 19 20

30

21 22 23

24 25

26 27 28 29

3132 33

34 35

1

10

C-50 <A/T>
(MU803784)

NOTE
*1: ECM connector C-60 <M/T>
*2: ECM connector C-53 <M/T>
*3: PCM connector C-54 <A/T>
*4: PCM connector C-50 <A/T>

C-53 <M/T>
(MU803771)

34

33

32

36

35

37

42

45

31

39

38

46

40 41

43 44

AK300053

CONNECTOR: B-14

AC

BAROMETRIC
PRESSURE
SENSOR

B-14 (B)

AK300060

ECM

CONNECTORS: C-53, C-60 <M/T>

AN

C-53 (G)

C-60 (G)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-696

.

CIRCUIT OPERATION

• A 5-volt voltage is supplied to the barometric 

pressure sensor power terminal (terminal No. 1) 
from the ECM (terminal No. 81) <M/T> or PCM 
(terminal No. 46) <A/T>. The ground terminal 
(terminal No. 5) is grounded with ECM (terminal 
No. 40) <M/T> or PCM (terminal No. 16) <A/T>.

• A voltage that is proportional to the atmospheric 

pressure is sent to the ECM (terminal No. 85) 
<M/T> or PCM (terminal No. 55) <A/T> from the 
barometric pressure sensor output terminal (ter-
minal No. 2).

.

TECHNICAL DESCRIPTION

• The barometric pressure sensor outputs a volt-

age which corresponds to the barometric pres-
sure.

• The ECM <M/T> or PCM <A/T> checks whether 

this voltage is within a specified range.

.

DESCRIPTIONS OF MONITOR METHODS
Barometric pressure sensor output voltage does not 

change for specified period. (approximately 1 
week)

.

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

.

AK300060

PCM

CONNECTORS: C-50, C-54 <A/T>

AO

C-54 (GR)

C-50 (GR)