Mitsubishi L200. Manual - part 59

TROUBLESHOOTING

DIESEL FUEL

13A-32

STEP 5. M.U.T.-III diagnosis code.

• After clearing the diagnosis code through M.U.T.-

III, start the engine and confirm whether the diag-
nosis code is output.

Q: Is the diagnosis code set?

YES : 

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, 
the vehicle equipped with the DPF carries 
out the forcible DPF regeneration. (Refer to 
GROUP 17 

− Emission Control − Diesel 

Particulate Filter (DPF) System 

− Forcible 

DPF Regeneration ).

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Use Troubleshooting/

Inspection Service Points 

− How to Cope 

with Intermittent Malfunctions ).

TROUBLESHOOTING

DIESEL FUEL

13A-33

Code No. P0047: Variable Geometry Control Solenoid Valve Circuit Low Input <Euro5>

OPERATION

• Power is supplied to the variable geometry con-

trol solenoid valve (terminal No. 2) from the 
engine control relay (terminal No. 3).

• The engine-ECU (terminal No. 17) makes the 

power transistor in the unit be in "ON" position, 
and that makes currents go on the variable 
geometry control solenoid valve (terminal No. 1).

AKA00128

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Engine control relay

A-20X

17

Engine-ECU

Variable geometry
control solenoid valve

1

2

Variable geometry control solenoid valve circuit

R

W-R

C-105

To engine-ECU

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

10

20A

Fusible link

Relay 
box

W-R

W-B

W-B

W-B

23

3

2

OFF

ON

4

1

A-115

3

A-56

AD

TROUBLESHOOTING

DIESEL FUEL

13A-34

FUNCTION

• The variable geometry control solenoid valve 

controls the vacuum pressure introduced into the 
variable geometry actuator, using the signal from 
the engine-ECU. This allows the boost pressure 
to be adequate for the driving conditions.

TROUBLE JUDGMENT

Check Conditions

• Battery positive voltage is 8 − 16 V.

• 2 seconds later after the engine has started up.

Judgment Criterion

• Variable geometry control solenoid valve output 

voltage is 0.4 V or less (driving current is abnor-
mally low).

PROBABLE CAUSES

• Failed variable geometry control solenoid valve

• Open/short circuit or harness damage in variable 

geometry control solenoid valve circuit or loose 
connector contact

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III actuator test

• Item 36: Variable geometry control solenoid valve

OK: The variable geometry actuator is oper-
ated

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-56 variable 
geometry control solenoid valve 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-56 
variable geometry control solenoid valve 
connector.

• Disconnect connector, and measure at solenoid 

valve side.

• Resistance between terminal No. 1 and No. 2.

OK: 10 

− 14 Ω (at 20°C)

Q: Is the check result normal?

YES : 

Go to Step 4 .

NO : 

Replace the variable geometry control 
solenoid valve.

STEP 4. Perform voltage measurement at A-56 
variable geometry control solenoid valve 
connector.

• Disconnect connector, and measure at harness 

side.

• Ignition switch: ON

• Voltage between terminal No. 2 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 6 .

NO : 

Go to Step 5 .

AK900982

2 1

AC

A-56 (BR)

Harness side
connector

Connector: A-56

AK900982

2 1

AC

A-56 (BR)

Harness side
connector

Connector: A-56

AK900982

2 1

AC

A-56 (BR)

Harness side
connector

Connector: A-56

TROUBLESHOOTING

DIESEL FUEL

13A-35

STEP 5. Connector check: A-20X engine control 
relay connector

Q: Is the check result normal?

YES : 

Check and repair harness between A-56 

(terminal No. 2) variable geometry control 
solenoid valve connector and A-20X 
(terminal No. 3) engine control relay 
connector.

• Check power supply line open/short 

circuit

NO : 

Repair or replace the connector.

STEP 6. Perform voltage measurement at C-105 
engine-ECU connector.

• Disconnect connector, and measure at harness 

side.

• Ignition switch: ON

• Voltage between terminal No. 17 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 8 .

NO : 

Go to Step 7 .

AK501321

2

1

3
4

Relay box's side 
connector

A-20X

Connector: A-20X

AC

AK900982

2 1

AC

A-56 (BR)

Harness side
connector

Connector: A-56

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