Mitsubishi L200. Manual - part 110

 

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Mitsubishi L200. Manual - part 110

 

 

TROUBLESHOOTING

DIESEL FUEL

13A-236

YES : 

Go to Step 7 .

NO : 

Repair the damaged harness wire.

STEP 7. M.U.T.-III data list

• Refer to Data List Reference Table 

P.13A-542

a. Item 118: No. 2 exhaust gas temperature sensor 

(catalyst temperature)

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-
159 No. 2 exhaust gas temperature sensor 
(catalyst temperature) 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 11 .

NO : 

Go to Step 9 .

1

2

AKB00272

A-159 (B)

Harness side
connector

Connector: A-159

No. 2 exhaust gas
temperature sensor
(catalyst temperature)

AB

TROUBLESHOOTING

DIESEL FUEL

13A-237

STEP 9. Connector check: C-105 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-159 (terminal 
No. 2) No. 2 exhaust gas temperature sensor 
(catalyst temperature) connector and C-105 
(terminal No. 83) engine-ECU connector.

NOTE: Before checking harness, check intemediate 
connector A-28, and repair if necessary.

• Check earthing line for open circuit and damage.

Q: Is the check result normal?

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

1

2

AKB00272

A-159 (B)

Harness side
connector

Connector: A-159

No. 2 exhaust gas
temperature sensor
(catalyst temperature)

AB

AKA00089

1

2

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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-238

YES : 

Go to Step 7 .

NO : 

Repair the damaged harness wire.

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-159 (terminal 
No. 1) No. 2 exhaust gas temperature sensor 
(catalyst temperature) connector and C-105 
(terminal No. 59) engine-ECU connector.

NOTE: Before checking harness, check intemediate 
connector A-28, and repair if necessary.

• Check output line for damage.

Q: Is the check result normal?

AKA00089

1

2

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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

1

2

AKB00272

A-159 (B)

Harness side
connector

Connector: A-159

No. 2 exhaust gas
temperature sensor
(catalyst temperature)

AB

AKA00089

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2

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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-239

YES : 

Go to Step 7 .

NO : 

Repair the damaged harness wire.

Code No. P0489: EGR Valve Position Sensor Circuit Low Input <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

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10 1112 13 14 15 16 17 18 19 20 21 22 23 24

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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

 

 

 

 

 

 

 

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