Mitsubishi Eclipse. Manual — part 278

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-605

.

CIRCUIT OPERATION

• The fuel gauge drive signal is input in ECM (ter-

minal No. 74) <M/T> or PCM (terminal No. 60)
<A/T>.

.

TECHNICAL DESCRIPTION

• Branch the drive signal from the fuel gauge cir-

cuit, and input it into ECM <M/T> or PCM<A/T>.

• The ECM <M/T> or PCM<A/T> detects the

amount of fuel left in the fuel tank with this signal,
and also controls the fuel level warning light.

.

DESCRIPTIONS OF MONITOR METHODS
Detect malfunction if change of fuel level sensor out-

put voltage is small when sum of fuel injection is
large.

.

MONITOR EXECUTION
Continuous

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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

.

AK300120AB

D-17 (GR)

CONNECTOR: D-17

FUEL TEMPERATURE
SENSOR
(INTEGRATED IN
FUEL PUMP MODULE)

AK300060

ECM

CONNECTOR: C-60 <M/T>

AE

C-60 (G)

AK300060AB

C-54 (GR)

PCM

CONNECTOR: C-54 <A/T>

AK300119

CONNECTOR: C-28

AB

C-28

AK300118

CONNECTOR: C-90

AB

C-90

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-606

DTC SET CONDITIONS

Logic Flow Chart

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INDICATED FUEL LEVEL

CHANGE < 2L

ACCUMULATE FUEL CONSUMPTION

THROUGH FUEL INJECTORS.

ACCUMULATED FUEL
CONSUMPTION WILL NOT
RESET WHEN KEY-OFF/ON.

ACCUMULATED FUEL >= SPECIFIED

CONSUMPTION VALUE

START

END

NO

NO

NO

YES

YES

YES

MALFUNCTION

GOOD

MONITORING

CONDITIONS

RESET ACCUMULATE

FUEL CONSUMPTION.

AK301450

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-607

Check Conditions, Judgement Criteria

• When the fuel consumption calculated from the

operation time of the injector amounts to 20 litter,
the diversity of the amount of fuel in tank calcu-
lated from the fuel level sensor is 2 litter or less.

.

OBD-ll DRIVE CYCLE PATTERN
Refer to Diagnostic Function

− OBD-ll Drive Cycle −

Procedure 6

− Other Monitor

P.12-3

.

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

• Fuel level sensor failed.

• Open or shorted fuel level sensor circuit, or har-

ness damage or connector damage.

• ECM failed. <M/T>

• PCM failed. <A/T>

DIAGNOSIS

STEP 1. Check fuel gauge.
Q: Is the fuel gauge functioning?

YES : Go to Step 3.
NO : Go to Step 2.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-608

STEP 2. Check for short circuit to ground between fuel
level sensor connector D-17 (terminal No. 2) and ECM
connector C-60 (terminal No. 74) <M/T> or PCM connector
C-54 (terminal No. 60) <A/T>.

AK300453

1

2

3

4

5

D-17 (GR)

AB

CONNECTOR: D-17

HARNESS CONNECTOR:
COMPONENT SIDE

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