Mitsubishi Lancer. Manual - part 261

TROUBLESHOOTING

ENGINE COOLING

14-10

STEP 11. Measure the terminal voltage at fan 
control relay connector A-09X.

AC303510

AB

Fan control relay

Relay box

Connector: A-09X

A-09X

(1) Disconnect fan control relay connector A-09X 

(remove the fan control relay) and measure relay 
box side connector.

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

AC303517AB

A-09X Connector
(Relay box side)

(3) Measure the voltage between fan control relay 

connector A-09X terminal 1 and body earth.

• The voltage should measure system voltage.

(4) Turn the ignition switch to the "LOCK" (OFF) 

position.

(5) Connect fan control relay connector A-09X 

(install the fan control relay).

Q: Is the measured voltage system voltage?

YES : 

Go to Step 14 .

NO : 

Go to Step 12 .

STEP 12. Check the J/C No.6 C-12 <L.H. drive 
vehicles> or C-134 <R.H. drive vehicles>, 
intermediate connector A-13 <L.H. drive 
vehicles> C-111 <R.H. drive vehicles> and fan 
control relay connector A-09X.

AC303524

Connector: C-12 <L.H. drive vehicles>

AB

C-12

C-12

AC303525

Connector: C-134 <R.H. drive vehicles>

AB

C-134

C-134

AC303526

Connector: A-13 <L.H. drive vehicles>

AB

A-13

A-13

AC303527

Connector: C-111 <R.H. drive vehicles>

AB

C-111

C-111

6

1

5

12

11

7

9

8

10

2 3

4

AC303510

AB

Fan control relay

Relay box

Connector: A-09X

A-09X

TROUBLESHOOTING

ENGINE COOLING

14-11

Q: Are there connectors in good condition?

YES : 

Go to Step 13 .

NO : 

Repair or replace the connector. Then go to 
Step 24 .

STEP 13. Check the harness wire between J/C 
No.6 C-12 terminal 33 <L.H. drive vehicles> or 
C-134 terminal 33 <R.H. drive vehicles> and fan 
control relay connector A-09X terminal 1.

AC303524

Connector: C-12 <L.H. drive vehicles>

AB

C-12

C-12

AC303525

Connector: C-134 <R.H. drive vehicles>

AB

C-134

C-134

AC303510

AB

Fan control relay

Relay box

Connector: A-09X

A-09X

Q: Are these harness wires in good condition?

YES : 

An intermittent malfunction is suspected 

(Refer to GROUP 00 - How to use 
troubleshooting 

P.00-5

).

NO : 

Repair the damaged harness wire. Then go 
to Step 24 .

STEP 14. Check the continuity between fan 
control relay connector A-09X and body earth.

AC303510

AB

Fan control relay

Relay box

Connector: A-09X

A-09X

(1) Disconnect fan control relay connector A-09X 

(remove the fan control relay) and measure relay 
box side connector.

AC303533AB

A-09X Connector
(Relay box side)

(2) Measure the resistance between fan control relay 

connector A-09X terminal 3 and body earth.

• Continuity exists.

(3) Connect fan control relay connector A-09X 

(install the fan control relay).

Q: Does the continuity exists?

YES : 

An intermittent malfunction is suspected 

(Refer to GROUP 00 - How to use 
troubleshooting 

P.00-5

).

NO : 

Go to Step 15 .

TROUBLESHOOTING

ENGINE COOLING

14-12

STEP 15. Check the fan control relay connector 
A-09X.

AC303510

AB

Fan control relay

Relay box

Connector: A-09X

A-09X

Q: Is the connector in good condition?

YES : 

Go to Step 16 .

NO : 

Repair the connector or replace the relay 
box. Then go to Step 24 .

STEP 16. Check the harness wire between fan 
control relay connector A-09X terminal 3 and 
body earth.

AC303510

AB

Fan control relay

Relay box

Connector: A-09X

A-09X

Q: Is the harness wire in good condition?

YES : 

An intermittent malfunction is suspected 

(Refer to GROUP 00 - How to use 
troubleshooting 

P.00-5

).

NO : 

Repair the damaged harness wire. Then go 
to Step 24 .

STEP 17. Check the continuity between cooling 
fan motor drive control unit connector A-18 and 
body earth.

AC100293

A-18

3

2

1

Connector: A-18

AD

(1) Disconnect cooling fan motor drive control unit 

connector A-18 and measure wiring harness side 
connector.

AC303534AB

A-18 Connector
(Wiring harness side)

(2) Measure the resistance between cooling fan 

motor drive control unit connector A-18 terminal 1 
and body earth.

• Continuity exists.

(3) Connect cooling fan motor drive control unit 

connector A-18.

Q: Dose the continuity exists?

YES : 

Go to Step 20 .

NO : 

Go to Step 18 .

TROUBLESHOOTING

ENGINE COOLING

14-13

STEP 18. Check the cooling fan motor drive 
control unit connector A-18.

AC100293

A-18

3

2

1

Connector: A-18

AD

Q: Is the connector in good condition?

YES : 

Go to Step 19 .

NO : 

Repair or replace the connector. Then go to 
Step 24 .

STEP 19. Check the harness wire between 
cooling fan motor drive control unit connector 
A-18 terminal 1 and body earth.

AC100293

A-18

3

2

1

Connector: A-18

AD

Q: Is the harness wire in good condition?

YES : 

An intermittent malfunction is suspected 

(Refer to GROUP 00 - How to use 
troubleshooting 

P.00-5

).

NO : 

Repair the damaged harness wire. Then go 
to Step 24 .

STEP 20. Check the cooling fan motor drive 
control unit connector A-18, intermediate 
connector A-13 <L.H. drive vehicles> or C-111 
<R.H. drive vehicles> and engine-ECU connector 
C-123 <M/T> or engine-A/T-ECU connector C-122 
<A/T>.

AC100293

A-18

3

2

1

Connector: A-18

AD

AC303526

Connector: A-13 <L.H. drive vehicles>

AB

A-13

A-13

AC303527

Connector: C-111 <R.H. drive vehicles>

AB

C-111

C-111

6

1

5

12

11

7

9

8

10

2 3

4