Mitsubishi L200. Manual - part 197

 

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Mitsubishi L200. Manual - part 197

 

 

TROUBLESHOOTING

DIESEL FUEL

13A-584

Engine-ECU Harness Side Connector Terminal Arrangement

AK800888

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

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

118

119

120

121

122

123

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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

AB

D-215

D-213

Engine-ECU harness side connector

Terminal No.

Inspection item

Normal condition (Check condition)

− 2

No. 1 injector

Approximately 0.45 

Ω (at 20°C)

73 

− 75 

<Euro5>
25 

− 75 <Except 

Euro5>

No. 2 injector

49 

− 50 

<Euro5>
25 

− 50 <Except 

Euro5>

No. 3 injector

25 

− 27 

<Euro5>

− 27 <Except 

Euro5>

No. 4 injector

17 

− 101

Variable geometry control solenoid 
valve <Euro5>

10 

− 14 Ω (at 20°C)

30 

− 36

EGR gas temperature sensor 
<Euro5>

55 

− 78 kΩ (at −20°C)

29 

− 41 kΩ (at 0°C)

17 

− 23 kΩ (at 20°C)

10 

− 14 kΩ (at 40°C)

7.1 

− 8.8 kΩ (at 60°C)

4.8 

− 5.9 kΩ (at 80°C)

32 

− 38

No. 2 intake air temperature sensor 
<Except Euro5>

13 

− 18 kΩ (at −20°C)

5.1 

− 6.9 kΩ (at 0°C)

2.0 

− 3.0 kΩ (at 20°C)

0.9 

− 1.5 kΩ (at 40°C)

0.40 

− 0.78 kΩ (at 60°C)

0.23 

− 0.42 kΩ (at 80°C)

39 

− 155

Battery temperature sensor <Euro5> 4.9 

− 5.3 kΩ (at 0°C)

2.2 

− 2.6 kΩ (at 20°C)

1.0 

− 1.4 kΩ (at 40°C)

55 

− 79

Fuel temperature sensor

2.0 

− 3.0 kΩ (at 20 °C)

58 

− 82

No. 1 exhaust gas temperature 
sensor
<Euro5>

120 

− 560 kΩ (at 20°C)

TROUBLESHOOTING

DIESEL FUEL

13A-585

INSPECTION PROCEDURE USING 
OSCILLOSCOPE

M1133004600588

The output signals of the sensors and the conditions 
of the actuation signals of the actuators can be 
inspected visually by observing the waveforms on 
the oscilloscope.

CAMSHAFT POSITION SENSOR AND 
CRANK ANGLE SENSOR

Measurement Method

1. Disconnect the camshaft position sensor 

connector and connect the special tool test 

harness (MB991709) in between (All terminals 
should be connected).

59 

− 83

No. 2 exhaust gas temperature 
sensor (catalyst temperature)
<Euro5>

120 

− 560 kΩ (at 20°C)

60 

− 84

No. 3 exhaust gas temperature 
sensor (DPF temperature)
<Euro5>

120 

− 560 kΩ (at 20°C)

62 

− 86

No. 1 intake air temperature sensor

13 

− 18 kΩ (at −20°C)

4.8 

− 7.0 kΩ (at 0°C)

2.1 

− 2.8 kΩ (at 20°C)

0.9 

− 1.5 kΩ (at 40°C)

0.47 

− 0.69 kΩ (at 60°C)

0.27 

− 0.39 kΩ (at 80°C)

63 

− 87

Engine coolant temperature sensor

14 

− 17 kΩ (at −20°C)

5.1 

− 6.5 kΩ (at 0°C)

2.1 

− 2.7 kΩ (at 20°C)

0.9 

− 1.3 kΩ (at 40°C)

0.48 

− 0.68 kΩ (at 60°C)

0.26 

− 0.36 kΩ (at 80°C)

116 

− Body 

earth

Engine-ECU earth

Continuity (2 

Ω or less)

117 

− Body 

earth
145 

− Body 

earth
114 

− 129

Throttle valve control servo

0.3 

− 100 Ω (at 20 °C)

131 

− 146

Suction control valve

Approximately 2.1 

Ω (at 20°C)

Terminal No.

Inspection item

Normal condition (Check condition)

3

2

1

3

2

1

AK501436

Special patterns
pick-up

Oscilloscope

AB

Camshaft position 
sensor connector

Crank angle sensor
connector

TROUBLESHOOTING

DIESEL FUEL

13A-586

2. Connect the oscilloscope special pattern pickup to 

camshaft position sensor terminal No. 2.

3. Disconnect the crank angle sensor intermediate 

connector and connect the special tool test 
harness (MB991709) in between.

4. Connect the oscilloscope special pattern pickup to 

crank angle sensor terminal No. 2.

Alternate Method (Test harness not available)
1. Connect the oscilloscope special pattern pickup to 

engine-ECU terminal No. 66 (When checking the 
camshaft position sensor signal wave pattern.)

2. Connect the oscilloscope special pattern pickup to 

engine-ECU terminal No. 67 (When checking the 
crank angle sensor signal wave pattern.)

Standard Wave Pattern
Observation conditions

Wave Pattern Observation Points

• Check that cycle time T becomes shorter when 

the engine speed increases.

Examples of Abnormal Wave Patterns

Example 1
Cause of problem

Sensor interface malfunction

Wave pattern characteristics

Rectangular wave pattern is output even when 

the engine is not started.

Example 2
Cause of problem

Loose timing belt
Abnormality in sensor disk

Wave pattern characteristics

Function

Special patterns

Pattern height

Low

Pattern selector

Display

Engine speed

Idle

AK501437

0

0

5

5

(V)

Time

Crank angle
sensor output
wave pattern

Camshaft 
position
sensor output
wave pattern

Standard Wave Pattern

2 engine revolutions
(1 camshaft revolution)

AB

AK501438

AK501439

TROUBLESHOOTING

DIESEL FUEL

13A-587

Wave pattern is displaced to the left or right.

SUCTION CONTROL VALVE

Measurement Method

1. Disconnect the suction control valve connector, 

and then connect the special tool test harness 
(MB991658) in between (All terminals should be 
connected).

2. Connect the oscilloscope special pattern pickup to 

terminal No. 1, of the suction control valve 
connector.

Alternate Method (Test harness not available)
1. Connect the oscilloscope special pattern pickup to 

engine-ECU terminal No. 131.

Standard Wave Pattern

Observation conditions

Wave Pattern Observation Points
When fuel pressure rises while the engine load is 
high, the driving time of the suction control valve 
becomes short.

AK900016

1

2

AB

Special
patterns
pickup

Oscilloscope

AK501441

0

5

(V)

Time

Standard Wave Pattern

AB

Function

Special patterns

Pattern height

Variable

Variable knob

Adjust while viewing 
the wave pattern

Pattern selector

Display

Engine

Idle

AK501442

Engine load is high

AB

 

 

 

 

 

 

 

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