Mitsubishi Galant (2004+). Manual - part 1652

ON-VEHICLE SERVICE

TSB Revision

ENGINE COOLING

14-7

ENGINE COOLANT REPLACEMENT

M1141001200478

WARNING

When removing the radiator cap, use care to avoid 
contact with hot coolant or steam. Place a shop towel 
over the cap and turn the cap counterclockwise a lit-
tle to let the pressure escape through the vinyl tube. 
After relieving the steam pressure, remove the cap by 
slowly turning it counterclockwise.

1. Drain the water from the radiator, heater core and engine 

after unplugging the radiator drain plug and removing the 
radiator cap.

2. Drain the water in the water jacket by unplugging the drain 

plug of the cylinder block.

3. Remove the radiator condenser tank assembly and drain the 

coolant.

4. Drain the coolant then clean the path of the coolant by 

injecting water into the radiator from the radiator cap area.

AC304173AC

CYLINDER BLOCK 
DRAIN PLUG

INTAKE MANIFOLD

<2.4L ENGINE>

AC306131AB

<3.8L ENGINE: LEFT BANK>

CYLINDER BLOCK
DRAIN PLUG

AC306132AB

<3.8L ENGINE: RIGHT BANK>

CYLINDER BLOCK
DRAIN PLUG

ON-VEHICLE SERVICE

TSB Revision

ENGINE COOLING

14-8

5. Apply the designated sealant to the screw area of the 

cylinder block drain plug, and then tighten to the standard 
torque.

Specified sealant: 3M

 AAD Part No.8731 or equiva-

lent

Tightening torque:

<2.4L Engine> 44 

± 5 N⋅m (33 ± 3 ft-lb)

<3.8L Engine> 39 

± 5 N⋅m (29 ± 3 ft-lb)

6. Securely tighten the radiator drain plug.
7. Assemble the radiator condenser tank assembly.

CAUTION

• Do not use alcohol or methanol anti-freeze or any 

engine coolants mixed with alcohol or methanol 
anti-freeze. The use of an improper anti-freeze can 
cause corrosion of the aluminum components.

• If the coolant contact the PremAir direct ozone reduc-

tion (DOR) radiator, wash it with water at once. <Vehi-
cles for California emission regulation> (2.4L Engine)

8. By referring to the section on coolant, select an appropriate 

concentration for safe operating temperature within the 
range of 30 to 60 %. Use special tool MB991871 to refill the 
coolant. A convenient mixture is a 50 % water and 50 % 
antifreeze solution [freezing point: 

−31°C (−32.8 °F)].

Recommended antifreeze: Long Life Antifreeze 

Coolant or an equivalent

Quantity: 

<2.4L Engine> 7.7 dm

3

 (8.1 quarts)

<3.8L Engine> 8.7 dm

3

 (9.2 quarts)

NOTE: For how to use special tool MB991871, refer to its 
manufacturer’s instructions.

9. Reinstall the radiator cap.
10.Start the engine and let it warm up until the thermostat 

opens.

11.After repeatedly revving the engine up to 3,000 r/min several 

times, stop the engine.

12.Remove the radiator cap after the engine has cooled, and 

pour in coolant up to the brim. Reinstall the cap.

CAUTION

Do not overfill the radiator condenser tank assembly.
13.Add coolant to the radiator condenser tank assembly 

between the "FULL" and "LOW" mark if necessary.

ENGINE COOLANT CONCENTRATION TEST

M1141001100396

Refer to GROUP 00, RECOMMENDED LUBRICANTS AND 
LUBRICANT CAPACITIES TABLE 

P.00-34

.

AC304677 AC

CYLINDER BLOCK
DRAIN PLUG

<2.4L ENGINE, 3.8L ENGINE: RIGHT BANK>

AC200625AD

CYLINDER BLOCK
DRAIN PLUG

<3.8L ENGINE: LEFT BANK>

AC306129

AIR HOSE

MB991871

AB

ON-VEHICLE SERVICE

TSB Revision

ENGINE COOLING

14-9

FAN CONTROL RELAY CONTINUITY CHECK

M1141006200310

RADIATOR FAN RELAY CHECK

M1141004400028

BATTERY 
VOLTAGE

TERMINAL NO. TO 
BE CONNECTED 
TO TESTER

CONTINUITY TEST 
RESULTS

Not applied

4 

− 2

Open circuit

Connect 
terminal No.3 
and battery (

−) 

terminal.
Connect 
terminal No.1 
and battery (+) 
terminal.

4 

− 2

Less than 2 ohms

AC305017

1

3

4

2

3

4

1

2

AC307445

FAN CONTROL RELAY

AB

BATTERY 
VOLTAGE

TERMINAL NO. TO 
BE CONNECTED 
TO TESTER

CONTINUITY TEST 
RESULTS

Not applied

2 

− 4

Less than 2 ohms

2 

− 5

Open circuit

Connect 
terminal No.3 
and battery (

−) 

terminal.
Connect 
terminal No.1 
and battery (+) 
terminal.

2 

− 5

Less than 2 ohms

AC306697

1

3

4

2

3

2

1

5

5

4

AC307444

RADIATOR FAN
RELAY

AB

ON-VEHICLE SERVICE

TSB Revision

ENGINE COOLING

14-10

RADIATOR FAN MOTOR CHECK

M1141007100093

1. Remove the radiator fan motor connector.
2. Check to see that the fan motor of the radiator turns when 

applying battery power between the connector terminals of 
the radiator fan motor. Also check to see that there is no 
abnormal sound coming from the radiator fan motor at this 
time.

3. If the radiator fan motor is defective, replace it.

AC306130

RADIATOR 
FAN MOTOR

1

2

AB