Mitsubishi Lancer. Manual — part 259

GENERAL INFORMATION

ENGINE COOLING

14-2

GENERAL INFORMATION

M1141000100371

The cooling system is designed to keep every part of
the engine at appropriate temperature in whatever
condition the engine may be operated. The cooling
method is of the water-cooled, pressure forced circu-
lation type in which the water pump pressurizes cool-
ant and circulates it throughout the engine. If the
coolant temperature exceeds the prescribed temper-

ature, the thermostat opens to circulate the coolant
through the radiator as well so that the heat
absorbed by the coolant may be radiated into the air.
The water pump is of the centrifugal type and is
driven by the alternator drive belt from the crank-
shaft. The radiator is the corrugated fin, down flow
type.

Item

Specification

Radiator

Performance kJ/h

4G13

Standard vehicles

137,720

Vehicles with capacity up radiator
(option)

161,288

4G18

Standard vehicles

161,288

Vehicles with capacity up radiator
(option)

181,800

4G63

181,800

A/T oil cooler

Performance kJ/h

5,651

SERVICE SPECIFICATIONS

M1141000300687

Item

Standard value

Limit

Fan controller V

A/C OFF 1 or less

-

A/C ON

Repeat

8.2

± 0.7

System voltage

± 2.6

-

High-pressure valve opening pressure of radiator cap kPa

93

− 123

Minimum 83

Range of coolant antifreeze concentration of radiator %

30

− 60

-

Thermostat

Valve opening temperature of
thermostat

° C

4G1

88

± 1.5

-

4G6

82

± 1.5

-

Full-opening temperature of
thermostat

° C

4G1

100

-

4G6

95

-

Valve lift mm

8.5 or more

-

LUBRICANT

ENGINE COOLING

14-3

LUBRICANT

M1141000400338

Item

Specified coolant

Quantity L

Engine coolant (including
condense tank)

DIAQUEEN SUPER LONG LIFE COOLANT
or an equivalent

4G1

5.0

4G6

7.0

SEALANTS

M1141000500324

Item

Specified sealant

Cylinder block drain plug

3M Nut Locking Part No.4171 or equivalent

Water pump <4G1>, Thermostat case
<4G6>, Cooling water outlet hose fitting
<4G6>

MITSUBISHI GENUINE Part No.MD970389 or equivalent

SPECIAL TOOLS

M1141000600581

Tool

Number

Name

Use

B991502

MB991502

M.U.T.-II sub
assembly

Reading diagnosis code

MB991910

MB991826

MB991955

MB991911

MB991824

MB991827

MB991825

A

B

C

D

E

F

DO NOT USE

SPECIAL TOOLS

ENGINE COOLING

14-4

MB991955

A: MB991824
B: MB991827
C: MB991910
D: MB991911
E: MB991825
F: MB991826

M.U.T.-III sub
assembly

A: Vehicle

communication
interface (V.C.I.)

B: M.U.T.-III USB

cable

C: M.U.T.-III main

harness A (Vehicles
with CAN
communication
system)

D: M.U.T.-III main

harness B (Vehicles
without CAN
communication
system)

E: M.U.T.-III

measurement
adapter

F: M.U.T.-III trigger

harness

Checking the A/T
(Diagnosis display using the
M.U.T.-III)

MB991223

A

D

C

B

AZ

DO NOT USE

MB991223

A: MB991219
B: MB991220
C: MB991221
D: MB991222

Harness set

A: Check harness
B: LED harness
C: LED harness

adapter

D: Probe

Making voltage and
resistance measurement
during troubleshooting

A: Connector pin contact

pressure inspection

B: Power circuit inspection
C: Power circuit inspection
D: Commercial tester

connection

Tool

Number

Name

Use

MB992006

TROUBLESHOOTING

ENGINE COOLING

14-5

TROUBLESHOOTING

INSPECTION CHART FOR TROUBLE
SYMPTOMS

M1141005600360

Trouble symptom

Inspection
procedure No.

Reference page

Cooling fan (L.H.) and Cooling fan (R.H.) <4G1 (Vehicles with
A/C)> or A/C condenser fan <4G6> do not operate

1

P.14-6

Cooling fan (L.H.) and Cooling fan (R.H.) <4G1 (Vehicles with
A/C)> or A/C condenser fan <4G6> do not change speed or stop

2

P.14-16

Cooling fan (L.H.) does not operate {When cooling fan (R.H.)
<4G1> or A/C condenser fan <4G6> operate} <Vehicles with A/C>

3

P.14-19

Cooling fan (R.H.) <4G1> or A/C condenser fan <4G6> does not
operate {When cooling fan (L.H.) operate} <Vehicles with A/C>

4

P.14-20

MB992006

Extra fine probe

Making voltage and
resistance measurement
during troubleshooting

MB991871

MB991871

LLC changer

Coolant refilling

Tool

Number

Name

Use