Mitsubishi L200. Manual — part 105

TROUBLESHOOTING

DIESEL FUEL

13A-216

STEP 4. Check harness between C-103 (terminal
No. 115) engine-ECU connector and A-45
(terminal No. 6) EGR valve assembly connector.

• Check output line for open/short circuit and dam-

age.

Q: Is the check result normal?

YES :

Go to Step 5 .

NO :

Repair the damaged harness wire.

STEP 5. Check harness between C-103 (terminal
No. 130) engine-ECU connector and A-45
(terminal No. 4) EGR valve connector.

• Check output line for open/short circuit and dam-

age.

Q: Is the check result normal?

YES :

Go to Step 6 .

NO :

Repair the damaged harness wire.

STEP 6. M.U.T.-III diagnosis code

• After clearing the diagnosis code through M.U.T.-

III, start the engine and confirm whether the diag-
nosis code is output.

Q: Is the diagnosis code set?

AKA00090

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

146

147

148

149

150

151

152

153

154

155

156

157

158

117

145

116

144

C-103 (B)

C-103 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-103

AB

AK501331

1

2

3

4

5

6

AB

Harness side
connector

A-45 (GR)

Connector: A-45

AKA00090

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

146

147

148

149

150

151

152

153

154

155

156

157

158

117

145

116

144

C-103 (B)

C-103 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-103

AB

AK501331

1

2

3

4

5

6

AB

Harness side
connector

A-45 (GR)

Connector: A-45

TROUBLESHOOTING

DIESEL FUEL

13A-217

YES :

Replace the engine-ECU. When the engine-

ECU is replaced, write the chassis number
(Refer to GROUP 00

− Precautions Before

Service

− How to Perform Chassis Number

Writing ). After replacing the engine-ECU,
register the injector identification code and
learn fuel injection (Refer to GROUP 00

−

Precautions Before Service

− What The

Common Rail Engine Learns ). After
registering the injector identification code,
the vehicle equipped with the DPF carries
out the forcible DPF regeneration. (Refer to
GROUP 17

− Emission Control − Diesel

Particulate Filter (DPF) System

− Forcible

DPF Regeneration ).

NO :

Intermittent malfunction (Refer to GROUP
00

− How to Use Troubleshooting/

Inspection Service Points

− How to Cope

with Intermittent Malfunctions ).

TROUBLESHOOTING

DIESEL FUEL

13A-218

Code No. P0405: EGR Valve Position Sensor Circuit Low Input <Except Euro5>

OPERATION

• A power voltage of 5 V is applied to the EGR

valve assembly power terminal (terminal No. 3)
from the engine-ECU (terminal No. 71) and
earthed to the engine-ECU (terminal No. 81) from
the EGR valve assembly (terminal No. 2).

• The sensor signal is inputted to the engine-ECU

(terminal No. 57) from the EGR valve assembly
output terminal (terminal No. 1).

FUNCTION

• The EGR valve assembly detects the position of

the EGR valve and sends the signal to the
engine-ECU.

• Based on the signal, the engine-ECU performs

the feedback control of the EGR valve.

TROUBLE JUDGMENT

Check Conditions

• Battery positive voltage is 8 − 16 V

• 2 seconds later after the ignition switch has been

in "ON" position or the engine has started up.

Judgment Criterion

• The EGR valve position sensor output voltage is

0.20 V or less for 0.5 second.

PROBABLE CAUSES

• Failed EGR valve position sensor

• Open/short circuit or harness damage in EGR

valve position sensor circuit or loose connector
contact

• Failed engine-ECU

AKA00103

1

2 3

4

5 6

1

2

3

4

5 6 7 8 9

10 1112 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

49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72

43 44 45 46 47 48

73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96

5 V

71

3

EGR valve assembly

SB

G-B

BR-B

57

81

1

2

EGR valve Position Sensor Circuit

C-105

A-45

(MU802056)

Wire colour code
B: Black LG: Light green G: Green L: Blue W: White Y: Yellow SB: Sky blue BR: Brown O: Orange GR: Grey
R: Red P: Pink V: Violet PU: Purple SI: Silver

Engine-ECU

AB

TROUBLESHOOTING

DIESEL FUEL

13A-219

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

• Refer to Data List Reference Table

P.13A-542

.

a. Item 16: EGR valve position sensor

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 ).

NO :

Go to Step 2 .

STEP 2. Connector check: A-45 EGR valve
assembly connector

Q: Is the check result normal?

YES :

Go to Step 3 .

NO :

Repair or replace the connector.

STEP 3. Perform voltage measurement at A-45
EGR valve assembly connector.

• Disconnect connector, and measure at harness

side.

• Ignition switch: ON

• Voltage between terminal No. 3 and earth.

OK: 4.9

− 5.1 V

Q: Is the check result normal?

YES :

Go to Step 9 .

NO :

Go to Step 4 .

STEP 4. Perform voltage measurement at C-105
engine-ECU connector.

• Measure engine-ECU terminal voltage.

• Ignition switch: ON

• Voltage between terminal No. 71 and earth.

OK: 4.9

− 5.1 V

Q: Is the check result normal?

YES :

Go to Step 8 .

NO :

Go to Step 5 .

AK501331

1

2

3

4

5

6

AB

Harness side
connector

A-45 (GR)

Connector: A-45

AK501331

1

2

3

4

5

6

AB

Harness side
connector

A-45 (GR)

Connector: A-45

AKA00089

1

2

3

4

5

6

7

8

9

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

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

43

44

45

46

47

48

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

C-105 (B)

C-105 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-105

AB