Mitsubishi L200. Manual - part 115

TROUBLESHOOTING

DIESEL FUEL

13A-256

STEP 6. Check harness between A-152 (terminal 
No. 2) battery current sensor connector and C-
105 (terminal No. 39) engine-ECU connector.

• Check output line for open/short circuit.

Q: Is the check result normal?

YES : 

Go to Step 7 .

NO : 

Repair the damaged harness wire.

STEP 7. M.U.T.-III data list

• Item No. 402: Battery temperature sensor

OK: At ambient temperature (atmospheric 
temperature) of battery temperature sensor, 
or equivalent

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 8. Perform resistance measurement at A-
152 battery current sensor connector.

• Disconnect connector and measure at harness 

side.

• Resistance between terminal No. 3 and earth.

OK: Continuity (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 11 .

NO : 

Go to Step 9 .

AKB00274

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3

2

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A-152 (GR)

Harness side
connector

Connector: A-152

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

AKB00274

1

3

2

4

A-152 (GR)

Harness side
connector

Connector: A-152

AB

TROUBLESHOOTING

DIESEL FUEL

13A-257

STEP 9. Connector check: C-103 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 10 .

NO : 

Repair or replace the connector.

STEP 10. Check harness between A-152 (terminal 
No. 3) battery current sensor connector and C-
103 (terminal No. 155) engine-ECU connector.

• Check earthing line for open circuit and damage.

Q: Is the check result normal?

YES : 

Go to Step 7 .

NO : 

Repair the damaged harness wire.

AKA00090

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144

C-103 (B)

C-103 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-103

AB

AKB00274

1

3

2

4

A-152 (GR)

Harness side
connector

Connector: A-152

AB

AKA00090

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C-103 (B)

C-103 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-103

AB

TROUBLESHOOTING

DIESEL FUEL

13A-258

STEP 11. Connector check: C-105 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 12 .

NO : 

Repair or replace the connector.

STEP 12. Check harness between A-152 (terminal 
No. 2) battery current sensor connector and C-
105 (terminal No. 39) engine-ECU connector.

• Check output line for damage.

Q: Is the check result normal?

YES : 

Go to Step 7 .

NO : 

Repair the damaged harness wire.

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

AKB00274

1

3

2

4

A-152 (GR)

Harness side
connector

Connector: A-152

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

TROUBLESHOOTING

DIESEL FUEL

13A-259

Code No. P0545: No.1 Exhaust Gas Temperature Sensor Circuit Low Input <Euro5>

OPERATION

• A power voltage of 5 V is applied to the No.1 

exhaust gas temperature sensor output terminal 
(terminal No. 1) from the engine-ECU (terminal 
No. 58).

• The power voltage is earthed to the engine-ECU 

(terminal No. 82) from the No.1 exhaust gas tem-
perature sensor (terminal No. 2).

FUNCTION

• The No.1 exhaust gas temperature sensor con-

verts the exhaust gas temperature into a voltage 
and inputs the voltage signal to the engine-ECU.

• Engine-ECU uses this voltage output for DPF 

regeneration control.

• The No.1 exhaust gas temperature sensor is a 

kind of resistor, which has characteristics to 
reduce its resistance as the exhaust gas temper-
ature rises. Therefore, the sensor output voltage 
varies with the exhaust gas temperature, and 
becomes lower as the exhaust gas temperature 
rises.

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 No.1 exhaust gas temperature sensor output 

voltage is 0.255 V or less.

PROBABLE CAUSES

• Failed No.1 exhaust gas temperature sensor

• Short circuit in No.1 exhaust gas temperature 

sensor circuit or connector damage

AKB00275

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1 2

AB

O-G

BR-L

Engine-ECU

No. 1 exhaust gas
temperature sensor

A-149

MU802601

No. 1 Exhaust Gas Temperature Sensor Circuit

2

82

1

58

5 V

C-105

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