Mitsubishi Eclipse. Manual - part 156

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-117

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

STEP 6. 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-5

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0112 set?

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

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-118

DTC P0113: Intake air temperature Circuit High Input

AK300333

2 3

7

4 5 6

1

BROWN

RED

-BL

U

E

C-60 <M/T>
(MU803772)

C-54 <A/T>
(MU803781)

40 <M/T>*1
16 <A/T>*3

72 <M/T>*2
64 <A/T>*4

B-14

INTAKE AIR TEMPERATURE SENSOR
(INCORPORATED IN VOLUME 
AIRFLOW SENSOR)

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

5

6

5 V

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

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

Intake Air Temperature Sensor Circuit

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

AD

B-14 (B)

INTAKE AIR
TEMPERATURE
SENSOR

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-119

.

CIRCUIT OPERATION

• Approximately 5 volts are applied to the intake air 

temperature sensor output terminal (terminal No. 
6) from the ECM (terminal No. 72) <M/T> or PCM 
(terminal No. 64) <A/T> via the resistor in the 
ECM <M/T> or PCM <A/T>. The ground terminal 
(terminal No. 5) is grounded with ECM (terminal 
No. 40) <M/T> or PCM (terminal No. 16) <A/T>.

• The intake air temperature sensor is a negative 

temperature coefficient type of resistor. When the 
intake air temperature rises, the resistance 
decreases.

• The intake air temperature sensor output voltage 

increases when the resistance increases and 
decreases when the resistance decreases.

.

TECHNICAL DESCRIPTION

• The intake air temperature sensor converts the 

intake air temperature to a voltage.

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

this voltage is within a specified range.

.

DESCRIPTIONS OF MONITOR METHODS
Intake air temperature sensor output voltage is out of 

specified range.

.

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)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-120

DTC SET CONDITIONS

Logic Flow Chart

.

Check Conditions

• 2 seconds or more have passed since the staring 

sequence was completed.

Judgement Criteria

• Intake air temperature sensor output voltage has 

continued to be 4.6 volts or higher [corresponding 
to an air intake temperature of 

−40°C (−104°F) or 

lower] for 2 seconds.

.

OBD-ll DRIVE CYCLE PATTERN
Refer to Diagnostic Function 

− OBD-ll Drive Cycle − 

Procedure 6 

− Other Monitor 

P.13A-5

.

.

TROUBLESHOOTING HINTS (The most likely 
causes for this code to be set are: )

• Intake air temperature sensor failed.

• Open intake air temperature sensor circuit, or 

connector damage.

• ECM failed. <M/T>

• PCM failed. <A/T>

DIAGNOSIS

Required Special Tools:

• MB991958 (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991911: Main Harness B

START

OUTPUT VOLTAGE < 0.2V

END

NO

NO

NO

YES

YES

YES

MALFUNCTION

GOOD

CONTINUOUS

FAILURE FOR 2secs

OUTPUT VOLTAGE > 4.6V

MONITORING

CONDITIONS

NO

YES

AK301424