Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 225

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-99

STEP 3. Check the throttle position sensor.
(1) Disconnect the connector B-07.
(2) Measure the resistance between throttle position sensor

side connector terminal 1 and 4.

Standard value: 3.5

−

6.5 k

Ω

(3) Measure resistance between the throttle position sensor

side connector terminal 1 and 3.

(4) Move the throttle valve from the idle position to the full-open

position.

•

Resistance should change smoothly in proportion to the
opening angle of the throttle valve.

Q: Is the resistance normal?

YES : Go to Step 4.
NO : Replace the throttle position sensor. (Refer to

P.13B-

565

, Throttle Body.) Then go to Step 9.

STEP 4. Check the maladjusted throttle position sensor.
Refer to, Throttle Position Sensor Adjustment (

P.13B-552

).

Q: Is the output voltage normal?

YES : Go to Step 5.
NO : Adjust it. Then go to Step 9.

STEP 5. Check connector C-58, C-62 at ECM <M/T> or
connector C-55, C-59 at PCM <A/T> 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.

ACX02484 AC

CONNECTOR : B-07

THROTTLE
POSITION
SENSOR

AKX01413

THROTTLE POSITION
SENSOR CONNECTOR

1 2 3 4

AB

AK000225

CONNECTORS : C-58, C-62<M/T>,
C-55, C-59<A/T>

C-55

C-58

PCM<A/T>

ECM<M/T>

AK

C-59

C-62

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-100

STEP 6. Check for harness damage between throttle
position sensor connector B-07 terminal 4 and ECM
connector C-58 terminal 42 <M/T> or PCM connector C-55
terminal 46 <A/T>.
Q: Is the harness wire in good condition?

YES : Go to Step 7.
NO : Repair it. Then go to Step 9.

STEP 7. Check for harness damage between throttle
position sensor connector B-07 terminal 3 and ECM
connector C-62 terminal 78 <M/T> or PCM connector C-59
terminal 78 <A/T>.
Q: Is the harness wire in good condition?

YES : Go to Step 8.
NO : Repair it. Then go to Step 9.

ACX02484 AC

CONNECTOR : B-07

THROTTLE
POSITION
SENSOR

AK000225

CONNECTOR : C-58<M/T>, C-55<A/T>

C-55

C-58

PCM<A/T>

ECM<M/T>

AI

ACX02484 AC

CONNECTOR : B-07

THROTTLE
POSITION
SENSOR

AK000225

CONNECTOR : C-62<M/T>, C-59<A/T>

C-59

C-62

PCM<A/T>

ECM<M/T>

AL

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-101

STEP 8. Using scan tool MB991502, check data list item 14:
Throttle Position Sensor.

CAUTION

To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991502 to the data reading mode for item

14, Throttle Position Sensor.

•

With the throttle valve in the idle position, voltage should
be between 0.535 and 0.735 volts.

•

With the throttle valve in the full-open position, voltage
should be between 4.5 and 5.5 volts.

(4) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the sensor operating properly?

YES : It can be assumed that this malfunction is intermittent.

Refer to GROUP 00, How to Use Troubleshooting/
Inspection Service Points (

P.00-6

).

NO : Replace the ECM or PCM. 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

P.13B-4

, Procedure 6

−

Other Monitor.

(2) Check the diagnostic trouble code (DTC).

Q: Is the DTC P0122 is output?

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

AKX01177

16 PIN

MB991502

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-102

DTC P0123: Throttle Position Circuit High Input

AK000689

2 3 4

1

GREEN-YELLO

W

YELLO

W

YELLO

W

BLA

CK

98

78

71

88 89

76 77

72
79
91

73
80

74

75

81
92

82 83
93

84 85

94

86 87

95 96

90

80

87

81

94

85

82

84

93

86

98

99

74

92

73

83

88

91

95

97

96

100

89

78

71

90

76 77

75

72
79

97

49
<M/T>*1
57
<A/T>*3

78
<M/T>*2
78
<A/T>*4

42
<M/T>*1
46
<A/T>*3

5V

AUTO-CRUISE
CONTROL SYSTEM

B-07
(MU802724)

THROTTLE POSITION
SENSOR

4

3

1

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

C-62<M/T>
(MU803783)

C-59<A/T>
(MU803782)

65

43
50

42
49

41
48
60 61

64

46 47
58 59
67 68

45

56
66

52

51

44

53

62

54

63

57

55

C-58<M/T>
(MU803782)

C-55<A/T>
(MU803781)

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

NOTE
*1:ECM connector C-58<M/T>
*2:ECM connector C-62<M/T>
*3:PCM connector C-55<A/T>
*4:PCM connector C-59<A/T>