Mitsubishi Lancer (4A9 engine). Manual — part 17

PRECAUTIONS BEFORE SERVICE

GENERAL

00-65

• Intake air temperature: −30 to 100°C

• Barometric pressure: 70 kPa or more

• Lamps, radiator fan and all accessories: OFF

• Transmission: Neutral

• Power steering: Static state

3. Select "MPI/GDI/DIESEL" from System select

Screen of the M.U.T.-III.

4. Select "Special Function" from MPI/GDI/DIESEL

Screen.

5. Select "Learning" from Special Function Screen.

6. Select Item No. 1 "Small Injection qt. Learning"

from the Learning Screen to execute learning.

CAUTION

If the vehicle conditions go out of the learning

conditions during idling, learning is interrupted.

To reexecute learning, the ignition switch

must once be turned off.
7. Continue idling for about 3 minutes before

learning is completed.

8. Confirm that the engine warning lamp is off. If it

still blinks, reexecute learning.

SUPPLY PUMP CORRECTION LEARNING PROCEDURE <4N1>

M1001014400277

PURPOSE

The engine-ECU learns the relation between the
suction control valve (linear solenoid valve) of the
supply pump drive current and the fuel injection vol-
ume.

The learning value is calculated from the suction
control valve drive current and the rail pressure sen-
sor output voltage.
When the suction control valve or supply pump is
replaced, therefore, this learning must be executed.
Re-learning is executed when the engine is idling
after the learning value in the engine-ECU has been
reset by the M.U.T.-III.

PRECAUTIONS BEFORE SERVICE

GENERAL

00-66

LEARNING PROCEDURE

CAUTION

To prevent damage to M.U.T.-III, always turn the
ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting M.U.T.-III.

AK800862AB

MB991827

MB991824

MB991910

Diagnosis connector

<L.H. drive vehicles>

AK800863

AB

MB991827

MB991824

Diagnosis connector

<R.H. drive vehicles>

MB991910

1. After the ignition switch is in "LOCK" (OFF)

position, connect the M.U.T.-III to the diagnosis
connector.

2. Turn the ignition switch to the "ON" position. (Do

not start the engine.)

3. Select "MPI/GDI/DIESEL" from System select

Screen of the M.U.T.-III.

4. Select "Special Function" from MPI/GDI/DIESEL

Screen.

5. Select "Initialisation" from Special Function

Screen.

6. Select Item No. 21 "Supply pump exchange

service" from "Initialisation Screen and execute
the initialisation of learning value.

• Accelerator pedal: OFF (not depressed)

• Engine coolant temperature: 60°C or higher

• Fuel temperature: 30°C or higher

7. After initialising, run the engine at idle in the

following conditions for 30 seconds.

8. Confirm that the Item No. 65 "High press. pump

learned status" on M.U.T.-III Data List is "2".

NOTE: "2" indicates that the learning has completed.

PRECAUTIONS BEFORE SERVICE

GENERAL

00-67

INITIALISATION PROCEDURE FOR
LEARNING VALUE IN COMMON RAIL
ENGINE <4N1>

M1001017800070

CAUTION

If the following services shown in the table are
carried out on the common rail engine, use the
M.U.T.-III to initialise the learning value. This is
essential to early and correctly operate the
exhaust gas processing system.
Initialising items

Service items

Initialisation item

Forcible DPF regeneration

At replacing supply pump *

No. 21 Supply pump exchange
service

−

At replacing diesel particulate filter
(DPF)

No. 40 DPF exchange service

−

At replacing exhaust differential
pressure sensor

No. 41 DPF dp sensor exchange
service

Necessary

At replacing catalytic converter

No. 42 DPF system malfunction
service

Necessary

At replacing engine oil (Only in
storing DTC P252F)

No. 43 Engine oil exchange
service

−

At replacing EGR cooler

No. 53 Fuel consumption
initialized

−

NOTE: *: After Initialising the learning value, carry out the supply pump correction learning in order to replace
the supply pump. (Refer to

P.00-65

).

PRECAUTIONS BEFORE SERVICE

GENERAL

00-68

INITIALISATION PROCEDURE

CAUTION

To prevent damage to M.U.T.-III, always turn the
ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting M.U.T.-III.

AK800862AB

MB991827

MB991824

MB991910

Diagnosis connector

<L.H. drive vehicles>

AK800863

AB

MB991827

MB991824

Diagnosis connector

<R.H. drive vehicles>

MB991910

1. After the ignition switch is in "LOCK" (OFF)

position, connect the M.U.T.-III to the diagnosis
connector.

2. Turn the ignition switch to the "ON" position. (Do

not start the engine.)

3. Select "MPI/GDI/DIESEL" from System select

Screen of the M.U.T.-III.

4. Select "Special Function" from MPI/GDI/DIESEL

Screen.

5. Select "Initialization" from Special Function

Screen.

6. Select the appropriate initialising item from the

Initialization Screen to initialise it.

7. Use M.U.T.-III to carry out the forcible DPF

regeneration. [Refer to GROUP 17

− Emission

Control <DIESEL>

− Diesel Particulate Filter

(DPF) System

− Forcible DPF Regeneration ].

BATTERY CURRENT SENSOR
CALIBRATION <Low CO

2

specification,

FFV, 4N1, 4J1>

M1001018600251

PURPOSE

The engine-ECU carries out the electrical generation
control according to the charge level of the battery,
based on the battery current sensor signal. To
improve the effect of reducing the fuel consumption
by the electrical generation control, it is necessary to
accurately detect the charge level of the battery. For
this, if the following services are performed, carry out
the battery current sensor calibration.

• Replacing the battery current sensor

• Replacing the engine-ECU

LEARNING PROCEDURE

1. After the ignition switch is in "LOCK" (OFF)

position, disconnect the battery cable from the
negative battery terminal.

AK900075AB

Battery current
sensor

2. Remove the battery current sensor from the

battery cable (Do not disconnect the battery
current sensor connector).

3. Connect the battery cable without the battery

current sensor to the negative battery terminal.