Mitsubishi 380. Manual - part 233

 

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Mitsubishi 380. Manual - part 233

 

 

ENGINE COOLING DIAGNOSIS

ENGINE COOLING

14-16

STEP 19. Check the harness wire between fan controller 
connector A-24 terminal 1 and body earth.

Q: Is the harness wire in good condition?

YES : An intermittent malfunction is suspected (Refer to 

GROUP 00 - How to use troubleshooting 

00-7

).

NO :  Repair the damaged harness wire. Then go to Step 

24.

04DB008A

1

2

3

A-24

Connector: A-24

ENGINE COOLING DIAGNOSIS

ENGINE COOLING

14-17

STEP 20. Check the fan controller connector A-24, 
intermediate connector A-13 and engine-ECU connector 
B-21.

Q: Are these connectors in good condition?

YES : Go to Step 21.
NO :  Repair or replace the connector. Then go to Step 24.

04DB008A

1

2

3

A-24

Connector: A-24

AK303148

CONNECTOR: A-13

AB

A-13(GR)

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

ENGINE COOLING DIAGNOSIS

ENGINE COOLING

14-18

STEP 21. Check the harness wire between fan controller 
connector A-24 terminal 2 and engine-ECU connector B-21  
terminal 71.

Q: Are these harness wires in good condition?

YES : Go to Step 22.
NO :  Repair the damaged harness wire. Then go to Step 

24.

04DB008A

1

2

3

A-24

Connector: A-24

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

ENGINE COOLING DIAGNOSIS

ENGINE COOLING

14-19

STEP 22. Check the fan controller.

(1) Disconnect fan controller connector A-24.

(2) Back out connector terminal pin 2 from connector housing.
(3) Reconnect the connector with connector terminal pin 2 still 

removed.

(4) Turn the ignition switch to the "ON" position.
(5) Check for the cooling fan operation.

• The cooling fan rotates. (with connector terminal pin 2 

disconnected)

(6) Check for the cooling fan operation.

• Using a suitable probe connect the fan controller termi-

nal 2 at controller side to earth.The cooling fan stops. 
(When pin 2 of fan controller is connected to earth)

(7) Turn the ignition switch to the "OFF" position.
(8) Disconnect fan controller connector A-24, and re-locate  

connector terminal pin 2 into connector housing.

(9) Reconnect the connector with connector terminal pin 2 

installed correctly.

Q: Does the cooling fan rotate? And when the fan 

controller pin 2  is connected to the body earth, does 
the cooling fan stop?
YES : 
Go to Step 23.
NO :  Replace the fan motor and fan controller (Refer to 

14-25

). Then go to Step 24.

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

04DB008A

1

2

3

A-24

Connector: A-24

 

 

 

 

 

 

 

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