Mitsubishi Evolution X. Manual - part 233

ON-VEHICLE SERVICE

TSB Revision

ENGINE COOLING

14-19

COOLING FAN RELAY CONTINUITY CHECK

M1141006201108

.

RADIATOR FAN RELAY CHECK

.

CONDENSER FAN RELAY CHECK

.

Battery voltage Terminal No. to 

be connected 
to tester

Continuity test 
results

Not applied

2 

− 4

Open circuit

Connect 
terminal No. 3 
and battery (+) 
terminal.
Connect 
terminal No. 1 
and battery (

−) 

terminal.

Continuity (Less 
than 2 ohms)

1

3

4

2

4

2

3

1

AC707028

AC705490

AC

Radiator fan relay

Battery voltage Terminal No. to 

be connected 
to tester

Continuity test 
results

Not applied

4 

− 3

Open circuit

Connect 
terminal No.1 
and battery (+) 
terminal.
Connect 
terminal No.2 
and battery (

−) 

terminal.

Continuity (Less 
than 2 ohms)

1

3

4

2

4

2

3

1

AC707029

AC705490

Condenser fan relay

AC

ON-VEHICLE SERVICE

TSB Revision

ENGINE COOLING

14-20

FAN CONTROL RELAY CHECK

Battery voltage Terminal No. to 

be connected 
to tester

Continuity test 
results

Not applied

2 

− 4

Continuity (Less 
than 2 ohms)

Not applied

2 

− 5

Open circuit

Connect 
terminal No. 1 
and battery (+) 
terminal.
Connect 
terminal No. 3 
and battery (

−) 

terminal.

Continuity (Less 
than 2 ohms)

1

3

4

2

AC707030

5

1

3

2

5

4

AC705490

AC

Fan control relay

ON-VEHICLE SERVICE

TSB Revision

ENGINE COOLING

14-21

COOLING FAN MOTOR CHECK

M1141007600225

1. Disconnect the fan motor connector.

2. Check that the fan motor runs when a positive battery 

terminal is connected to the fan motor-side connector 
terminal No.1, and terminal No.2 is grounded. Also check to 
see that there is no abnormal sound emitted from the fan 
motor at this time.

3. If the fan motor is defective, replace it (Refer to 

P.14-31

).

AC706502AC

Condenser fan 
motor connector

Radiator fan 
motor connector

AC706893AC

Condenser fan 
motor connector

AC706894AC

Radiator fan 
motor connector

THERMOSTAT

TSB Revision

ENGINE COOLING

14-22

THERMOSTAT

REMOVAL AND INSTALLATION

M1141002401713

Pre-removal operation
• Engine Coolant Draining (Refer to 

P.14-17

).

• Engine Upper Cover Removal (Refer to GROUP 16, Igni-

tion System 

− Ignition Coil 

P.16-39

).

• Air Cleaner Intake Hose Removal (Refer to GROUP 15, 

Air Cleaner 

P.15-10

).

Post-installation operation
• Air Cleaner Intake Hose Installation (Refer to GROUP 15, 

Air Cleaner 

P.15-10

).

• Engine Upper Cover Installation (Refer to GROUP 16, 

Ignition System 

− Ignition Coil 

P.16-39

).

• Engine Coolant Refilling (Refer to 

P.14-17

).

AC705834

24 ± 3 N·m
18 ± 2 ft-lb

10 ± 2 N·m
89 ± 17 in-lb

1

2

3

4

5

AC

Removal steps 

<<A>>

>>B<<

1.

Radiator lower hose connection

2.

Control wiring harness clamp 
connection

3.

Harness bracket

4.

Cooling water inlet hose fitting

>>A<<

5.

Thermostat

Removal steps (Continued)