Mitsubishi L200. Manual - part 113

TROUBLESHOOTING

DIESEL FUEL

13A-248

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 resistance measurement at A-45 
EGR valve assembly connector.

• Disconnect connector, and measure at harness 

side.

• Resistance between terminal No. 2 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: C-105 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 5 . 

NO : 

Repair or replace the connector.

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

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11

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49

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43

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95

96

C-105 (B)

C-105 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-105

AB

TROUBLESHOOTING

DIESEL FUEL

13A-249

STEP 5. Check harness between A-45 (terminal 
No. 2) EGR valve assembly connector and C-105 
(terminal No. 81) engine-ECU connector.

• Check earthing line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 6 .

NO : 

Repair the damaged harness wire.

STEP 6. 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 : 

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, 
carry out the forcible DPF regeneration. 
(Refer to GROUP 17 

− Emission Control − 

Diesel Particulate Filter (DPF) System 

− 

Forcible DPF Regeneration ).

STEP 7. 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 : 

Replace the EGR valve assembly.

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

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14

15

16

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95

96

C-105 (B)

C-105 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-105

AB

TROUBLESHOOTING

DIESEL FUEL

13A-250

Code No. P0502: Vehicle Speed Sensor Low Input <2WD-M/T and 4WD vehicles>

AKA00104

1

2

3

1

2

3
4

101 102

103104 105 106107 108109 110 111112 113 114115

118119 120 121122 123124 125126127 128 129130

131132 133 134135 136137 138139140 141142 143

146147 148 149150 151152 153154155 156 157158

117

145

116

144

10

23

20A

B-01

(MU802723)

Vehicle speed sensor

141

B

W-L

W-L

W-L

W-L

R

R

R

Engine-ECU

A-20X

10

2

A-28

1

3

2

C-29

Vehicle Speed Sensor Circuit

C-103

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

22

11

21

4

J/C (2)

C-127

C-30

5 V

Engine 
control 
relay

4

1

3

2

3

A-115

Relay 
box

W-R

Fusible link

To engine-ECU

W-B

W-B

OFF

ON

NOTE

*1: L.H. drive vehicles
*2: R.H. drive vehicles

W-B

C-53*¹
or
C-35*²

AB

TROUBLESHOOTING

DIESEL FUEL

13A-251

OPERATION

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

speed sensor (terminal No. 3) from the engine-
ECU (terminal No. 114).

FUNCTION

• The vehicle speed sensor converts the vehicle 

speed to the voltage, and then input it into the 
engine-ECU

TROUBLE JUDGMENT

Check Conditions

• Engine is running

• Engine coolant temperature is 80°C or higher

• The last fuel injection rate exceeds the specified 

value.

• Engine speed is 2,900 r/min or more.

Judgment Criterion

• Vehicle speed is 5 km/h or lower for 2 seconds.

PROBABLE CAUSES

• Failed vehicle speed sensor

• Open/short circuit or harness damage in vehicle 

speed sensor circuit or loose connector contact

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. Check the speed meter

Q: Is the check result normal?

YES : 

Go to Step 2 .

NO : 

Check the speed meter (Refer to GROUP 
54A 

−Combination Meter − On-vehicle 

Service 

− Speedometer Check ).

STEP 2. M.U.T.-III data list

• Refer to Data list reference table 

P.13A-542

.

a. Item 4: Vehicle speed 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 3 .

STEP 3. Connector check: C-103 engine-ECU 
connector

Q: Is the check result normal?

YES : 

 Go to Step 4 .

NO : 

Repair or replace the connector.

AKA00090

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

118

119

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146

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154

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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