Mitsubishi L200. Manual - part 107

TROUBLESHOOTING

DIESEL FUEL

13A-224

STEP 15. Perform voltage measurement at C-105 
engine-ECU connector.

• Measure engine-ECU terminal voltage.

• Engine: Idling (after warning up)

• Voltage between terminal No. 57 and earth.

OK: 2.0 V or higher

Q: Is the check result normal?

YES : 

Go to Step 17 . 

NO : 

Go to Step 16 . 

STEP 16. Connector check: C-105 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Check and repair harness between A-45 

(terminal No. 1) EGR valve assembly 
connector and C-105 (terminal No. 57) 
engine-ECU connector.

• Check output line for open circuit and 

damage.

NO : 

Repair or replace the connector.

AKA00089

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C-105 (B)

C-105 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-105

AB

AKA00089

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C-105 (B)

C-105 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-105

AB

AK501331

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AB

Harness side 
connector

A-45 (GR)

Connector: A-45

TROUBLESHOOTING

DIESEL FUEL

13A-225

STEP 17. Connector check: C-105 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 7 .

NO : 

Repair or replace the connector.

AKA00089

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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-226

Code No. P0406: EGR Valve Position Sensor Circuit High 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 

4.80 V or more for 0.5 second.

PROBABLE CAUSES

• Failed EGR valve position sensor

• Open circuit in EGR valve position sensor circuit 

or loose connector contact

• Failed engine-ECU

AKA00103

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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-227

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

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AB

Harness side 
connector

A-45 (GR)

Connector: A-45

AK501331

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AB

Harness side 
connector

A-45 (GR)

Connector: A-45

AKA00089

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C-105 (B)

C-105 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-105

AB