Mitsubishi L200. Manual — part 96

TROUBLESHOOTING

DIESEL FUEL

13A-180

DIAGNOSIS PROCEDURE

CAUTION

A high-tension voltage is flowing between the
engine-ECU and the injectors while the engine is
running. Handle them carefully to avoid receiving
electric shocks from the voltage.

STEP 1. M.U.T.-III diagnosis code

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

III, operate the engine in the warm-up state and
confirm and confirm whether the diagnosis code
is output

Q: Is the diagnosis code set?

YES :

Go to Step 2 .

NO :

Intermittent malfunction (Refer to GROUP
00

− How to Use Troubleshooting/

Inspection Service Points

− How to Cope

with Intermittent Malfunctions ).

STEP 2. Check for No.1 fuel injection pipe
clogged

• Remove the No.1 fuel injection pipe.

• Check whether No.1 fuel injection pipe is clogged

or not.

Q: Is it clogged?

YES :

Clean or replace the No. 1 fuel injection

pipe.

NO :

Replace the No.1 injector. After replacing
the injector, register the injector
identification code and learn fuel injection
(Refer to GROUP 00

− Precautions Before

Service

− What The Common Rail Engine

Learns ). Then go to Step 3 .

STEP 3. M.U.T.-III diagnosis code

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

III, operate the engine in the warm-up state and
confirm and confirm whether the diagnosis 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 :

The check is end.

Code No. P0302: No. 2 Cylinder Injector Malfunction (No Injection)

FUNCTION

• The Engine-ECU, by monitoring the variation in

the engine revolution, detects the non-fuel injec-
tion state.

TROUBLE JUDGMENT

Check Conditions

• During the normal engine operation

• Engine coolant temperature is 80°C or higher.

• Crank angle sensor is normal.

Judgment Criterion

• The variation in the engine revolution is more

than the specified value.

PROBABLE CAUSES

• Failed No. 2 injector

• No. 2 fuel injection pipe clogged

• Failed Engine-ECU

DIAGNOSIS PROCEDURE

CAUTION

A high-tension voltage is flowing between the
engine-ECU and the injectors while the engine is
running. Handle them carefully to avoid receiving
electric shocks from the voltage.

STEP 1. M.U.T.-III diagnosis code

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

III, operate the engine in the warm-up state and
confirm and confirm whether the diagnosis code
is output

Q: Is the diagnosis code set?

TROUBLESHOOTING

DIESEL FUEL

13A-181

YES :

Go to Step 2 .

NO :

Intermittent malfunction (Refer to GROUP
00

− How to Use Troubleshooting/

Inspection Service Points

− How to Cope

with Intermittent Malfunctions ).

STEP 2. Check for No. 2 fuel injection pipe
clogged

• Remove the No. 2 fuel injection pipe.

• Check whether No. 2 fuel injection pipe is

clogged or not.

Q: Is it clogged?

YES :

Clean or replace the No. 2 fuel injection

pipe.

NO :

Replace the No. 2 injector. After replacing
the injector, register the injector
identification code and learn fuel injection
(Refer to GROUP 00

− Precautions Before

Service

− What The Common Rail Engine

Learns ). Then go to Step 3 .

STEP 3. M.U.T.-III diagnosis code

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

III, operate the engine in the warm-up state and
confirm and confirm whether the diagnosis 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 :

The check is end.

Code No. P0303: No. 3 Cylinder Injector Malfunction (No Injection)

FUNCTION

• The Engine-ECU, by monitoring the variation in

the engine revolution, detects the non-fuel injec-
tion state.

TROUBLE JUDGMENT

Check Conditions

• During the normal engine operation

• Engine coolant temperature is 80°C or higher.

• Crank angle sensor is normal.

Judgment Criterion

• The variation in the engine revolution is more

than the specified value.

PROBABLE CAUSES

• Failed No. 3 injector

• No. 3 fuel injection pipe clogged

• Failed Engine-ECU

DIAGNOSIS PROCEDURE

CAUTION

A high-tension voltage is flowing between the
engine-ECU and the injectors while the engine is
running. Handle them carefully to avoid receiving
electric shocks from the voltage.

STEP 1. M.U.T.-III diagnosis code

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

III, operate the engine in the warm-up state and
confirm and confirm whether the diagnosis code
is output

Q: Is the diagnosis code set?

YES :

Go to Step 2 .

NO :

Intermittent malfunction (Refer to GROUP
00

− How to Use Troubleshooting/

Inspection Service Points

− How to Cope

with Intermittent Malfunctions ).

STEP 2. Check for No. 3 fuel injection pipe
clogged

• Remove the No. 3 fuel injection pipe.

• Check whether No. 3 fuel injection pipe is

clogged or not.

Q: Is it clogged?

TROUBLESHOOTING

DIESEL FUEL

13A-182

YES :

Clean or replace the No. 3 fuel injection

pipe.

NO :

Replace the No. 3 injector. After replacing
the injector, register the injector
identification code and learn fuel injection.
(Refer to GROUP 00

− Precautions Before

Service

− What The Common Rail Engine

Learns ). Then go to Step 3 .

STEP 3. M.U.T.-III diagnosis code

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

III, operate the engine in the warm-up state and
confirm and confirm whether the diagnosis 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 :

The check is end.

Code No. P0304: No. 4 Cylinder Injector Malfunction (No Injection)

FUNCTION

• The Engine-ECU, by monitoring the variation in

the engine revolution, detects the non-fuel injec-
tion state.

TROUBLE JUDGMENT

Check Conditions

• During the normal engine operation

• Engine coolant temperature is 80°C or higher.

• Crank angle sensor is normal.

Judgment Criterion

• The variation in the engine revolution is more

than the specified value.

PROBABLE CAUSES

• Failed No. 4 injector

• No. 4 fuel injection pipe clogged

• Failed Engine-ECU

DIAGNOSIS PROCEDURE

CAUTION

A high-tension voltage is flowing between the
engine-ECU and the injectors while the engine is
running. Handle them carefully to avoid receiving
electric shocks from the voltage.

STEP 1. M.U.T.-III diagnosis code

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

III, operate the engine in the warm-up state and
confirm and confirm whether the diagnosis code
is output

Q: Is the diagnosis code set?

YES :

Go to Step 2 .

NO :

Intermittent malfunction (Refer to GROUP
00

− How to Use Troubleshooting/

Inspection Service Points

− How to Cope

with Intermittent Malfunctions ).

STEP 2. Check for No.4 fuel injection pipe
clogged

• Remove the No. 4 fuel injection pipe.

• Check whether No.4 fuel injection pipe is clogged

or not.

Q: Is it clogged?

YES :

Clean or replace the No. 4 fuel injection

pipe.

NO :

Replace the No. 4 injector. After replacing
the injector, register the injector
identification code and learn fuel injection
(Refer to GROUP 00

− Precautions Before

Service

− What The Common Rail Engine

Learns ). Then go to Step 3 .

STEP 3. M.U.T.-III diagnosis code

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

III, operate the engine in the warm-up state and
confirm and confirm whether the diagnosis code
is output.

Q: Is the diagnosis code set?

TROUBLESHOOTING

DIESEL FUEL

13A-183

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 :

The check is end.

Code No. P0335: Crank Angle Sensor System

AKA00100

1

2 3

1

2

3

4

5 6 7 8 9

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

25 26

27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

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

Crank Angle Sensor Circuit

Crank
angle
sensor

A-07

MU802337

C-105

R

P

68

3

3

G-R

G-R

67

2

2

B-W

B-Y

91

1

1

A-133

Engine-ECU

5 V

5 V

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

AB