Mitsubishi Colt Ralliart. Manual - part 725

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-225

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

• Refer to Data List Reference Table 

P.13B-335

.

a. Item 77: Accelerator pedal position sensor 

(sub)

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunctions 

P.00-13

).

NO : 

Go to Step 2 .

STEP 2. Connector check: B-26 accelerator pedal 
position sensor connector

Q: Is the check result normal?

YES : 

Go to Step 3 .

NO : 

Repair or replace.

STEP 3. Perform resistance measurement at B-26 
accelerator pedal position sensor connector.

• Disconnect connector, and measure at harness 

side.

• Resistance between terminal No. 5 and earth.

OK: Continuity (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 7 .

NO : 

Go to Step 4 .

STEP 4. Connector check: A-08 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 5 .

NO : 

Repair or replace.

AK402092

1

6 5 4 3 2

B-26(B)

AC

Connector: B-26

Harness side 
connector

AK402092

1

6 5 4 3 2

B-26(B)

AC

Connector: B-26

Harness side 
connector

AK402725

77

78

79

80

81

82

83

84

92

93

94

95

96

97

98

99

85

86

87

88

89

90

91

100

101

102

103

104

105

106

115

116

117

118

119

120

121

107

108

109

110

111

112

113

114

130

131

132

133

134

135

136

122

123

124

125

126

127

128

129

72 71

74 73

76 75

R

AI

A-08

Connector: 

A-08

A-08 Special tool power plant ECU check 
harness

Engine-ECU

Battery

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-226

STEP 5. Check harness between B-26 (terminal 
No. 5) accelerator pedal position sensor 
connector and A-08 (terminal No. 87) engine-ECU 
connector.

• Check earthing line for open circuit and damage.

Q: Is the check result normal?

YES : 

Go to Step 6 .

NO : 

Repair.

STEP 6. M.U.T.-III data list

• Refer to Data List Reference Table 

P.13B-335

.

a. Item 77: Accelerator pedal position sensor 

(sub)

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunctions 

P.00-13

).

NO : 

Replace engine-ECU.

STEP 7. Replace the accelerator pedal assembly

• After replacing the accelerator pedal assembly, 

re-check the trouble symptoms.

Q: Is the check result normal?

YES : 

Check end.

NO : 

Replace engine-ECU.

AK402092

1

6 5 4 3 2

B-26(B)

AC

Connector: B-26

Harness side 
connector

AK402725

77

78

79

80

81

82

83

84

92

93

94

95

96

97

98

99

85

86

87

88

89

90

91

100

101

102

103

104

105

106

115

116

117

118

119

120

121

107

108

109

110

111

112

113

114

130

131

132

133

134

135

136

122

123

124

125

126

127

128

129

72 71

74 73

76 75

R

AI

A-08

Connector: 

A-08

A-08 Special tool power plant ECU check 
harness

Engine-ECU

Battery

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-227

Code No. P2135: Throttle Position Sensor (Main and Sub) Range/Performance Problem

OPERATION

• Refer to Code No. P0122: Throttle Position Sen-

sor (main) Circuit Low Input 

P.13B-53

.

• Refer to Code No. P0222: Throttle Position Sen-

sor (sub) Circuit Low Input 

P.13B-112

.

FUNCTION

• Engine-ECU checks the throttle position sensor 

output signal characteristics for abnormal condi-
tions.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is in "ON" position.

• Throttle position sensor (main) output voltage is 

more than 0.2 V and is less than 4.8 V.

• Throttle position sensor (sub) output voltage is 

more than 0.2 V and is less than 4.8 V.

Judgment Criterion

• Total output voltage of main and sub throttle posi-

tion sensors is less than 4.5 V or is more than 5.5 
V.

PROBABLE CAUSE

• Failed throttle position sensor

• Open/short circuit in throttle position sensor cir-

cuit or loose connector contact

DIAGNOSIS PROCEDURE

STEP 1. Connector check: A-114 engine-ECU 
connector and A-107 electronic-controlled 
throttle valve connector

Q: Is the check result normal?

YES : 

Go to Step 2 .

NO : 

Repair or replace.

AK402745

6

4

2

5

3

1

9

7

8

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

L

AF

A-114

Connector: 

A-114

Harness side connector

Engine-ECU

Battery

AK402086

1

6 5 4 3 2

A-107(B)

AC

Connector: A-107

Harness side 

connector

Main

Index

Group

TOC

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI) <4G1>

13B-228

STEP 2. Check harness between A-107 (terminal 
No. 1) electronic-controlled throttle valve 
connector and A-114 (terminal No. 15) 
engine-ECU connector.

• Check output line for short circuit.

Q: Is the check result normal?

YES : 

Go to Step 3 .

NO : 

Repair.

STEP 3. Check harness between A-107 (terminal 
No. 3) electronic-controlled throttle valve 
connector and A-114 (terminal No. 16) 
engine-ECU connector.

• Check output line for short circuit.

Q: Is the check result normal?

YES : 

Go to Step 4 .

NO : 

Repair.

STEP 4. Replace throttle body assembly.

• After throttle body assembly is replaced, re-check 

for trouble symptom.

Q: Does trouble system persist?

YES : 

Replace engine-ECU.

NO : 

Check end.

AK402086

1

6 5 4 3 2

A-107(B)

AC

Connector: A-107

Harness side 

connector

AK402745

6

4

2

5

3

1

9

7

8

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

L

AF

A-114

Connector: 

A-114

Harness side connector

Engine-ECU

Battery

AK402086

1

6 5 4 3 2

A-107(B)

AC

Connector: A-107

Harness side 

connector

AK402745

6

4

2

5

3

1

9

7

8

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

L

AF

A-114

Connector: 

A-114

Harness side connector

Engine-ECU

Battery

Main

Index

Group

TOC