Mitsubishi Outlander GS45X. Manual — part 1579

ENGINE COOLING DIAGNOSIS

TSB Revision

ENGINE COOLING

14-19

STEP 7. Measure the terminal voltage at ETACS-ECU
connector C-312.
(1) Disconnect the ETACS-ECU connector C-312 and measure

at the harness connector side.

(2) Turn the ignition switch to the "ON" position.
(3) Measure the terminal voltage between ETACS-ECU

connector C-312 terminal number 2 and body ground, and
between ETACS-ECU connector C-312 terminal number 8
and body ground.

OK: Battery positive voltage.

Q: Is the measured voltage battery positive voltage?

YES : Go to Step 13.
NO : Go to Step 8.

STEP 8. Check the radiator fan relay connector A-34X,
condenser fan relay connector A-35X, fan control relay
connector A-36X, and ETACS-ECU connector C-312, for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Refer to GROUP 00E, Harness Connector Inspection

P.00E-2

Q: Are the connectors and terminals in good condition?

YES : Go to Step 9.
NO : Repair or replace the damaged connectors or replace

the relay box. Then go to Step 23.

STEP 9. Check the harness wire between fusible link
number 28 and condenser fan relay connector A-35X
terminal number 3, between fusible link number 28 and
condenser fan relay connector A-35X terminal number 4,
between condenser fan relay connector A-35X terminal
number 4 and fan control relay connector A-36X terminal
number 1, and between fusible link number 29 and radiator
fan relay connector A-34X terminal number 3, for damage.
Check harness wire for open/short circuit and damage.
Q: Are the harness wires in good condition?

YES : Go to Step 10.
NO : Repair or replace the damaged harness wire. Then go

to Step 23.

ACA02108 AD

C-312 Harness connector:
Component side

ENGINE COOLING DIAGNOSIS

TSB Revision

ENGINE COOLING

14-20

STEP 10. Check the harness wire between radiator fan
relay connector A-34X terminal number 1 and ETACS-ECU
connector C-312 terminal number 2, between condenser
fan relay connector A-35X terminal number 1 and
ETACS-ECU connector C-312 terminal number 8, and
between fan control relay connector A-36X terminal
number 3 and ETACS-ECU connector C-312 terminal
number 8, for damage.
Check harness wire for open/short circuit and damage.
Q: Are the harness wires in good condition?

YES : Go to Step 11.
NO : Repair or replace the damaged harness wire. Then go

to Step 23.

STEP 11. Check the radiator fan relay, the condenser fan
relay and the fan control relay.
Refer to

P.14-31

Q: Are the relays in good condition?

YES : Go to Step 12.
NO : Replace the damaged relay. Then go to Step 23.

STEP 12. Check the fusible link number 28 and fusible link
number 29.
Q: Are the fusible links in good condition?

YES : Go to Step 20.
NO : Replace the damaged fusible link. Then go to Step

23.

STEP 13. Check the radiator fan relay connector A-34X,
condenser fan relay connector A-35X, fan control relay
connector A-36X, radiator fan motor connector A-05, and
condenser fan motor connector A-43, for loose, corroded
or damaged terminals, or terminals pushed back in the
connector.
Refer to GROUP 00E, Harness Connector Inspection

P.00E-2

Q: Are the connectors and terminals in good condition?

YES : Go to Step 14.
NO : Repair or replace the damaged connectors or replace

the relay box. Then go to Step 23.

STEP 14. Check the harness wire between fusible link
number 28 and condenser fan relay connector A-35X
terminal number 4, and between fusible link number 29
and radiator fan relay connector A-34X terminal number 4,
for damage.
Check harness wire for open/short circuit and damage.
Q: Are the harness wires in good condition?

YES : Go to Step 15.
NO : Repair or replace the damaged harness wire. Then go

to Step 23.

ENGINE COOLING DIAGNOSIS

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ENGINE COOLING

14-21

STEP 15. Check the harness wire between radiator fan
relay connector A-34X terminal number 2 and radiator fan
motor connector A-05 terminal number 1, and between
condenser fan relay connector A-35X terminal number 2
and condenser fan motor connector A-43 terminal number
1, for damage.
Check harness wire for open/short circuit and damage.
Q: Are the harness wires in good condition?

YES : Go to Step 16.
NO : Repair or replace the damaged harness wire. Then go

to Step 23.

STEP 16. Check the harness wire between radiator fan
motor connector A-05 terminal number 2 and fan control
relay connector A-36X terminal number 2, and between
condenser fan motor connector A-43 terminal number 2
and body ground, for damage.
Check harness wire for open/short circuit and damage.
Q: Is the check result normal?

YES : Go to Step 17.
NO : Repair or replace the damaged harness wire. Then go

to Step 23.

STEP 17. Check the harness wire between fan control relay
connector A-36X terminal number 4 and condenser fan
relay connector A-35X terminal number 2, and between fan
control relay connector A-36X terminal number 5 and body
ground, for damage.
Check harness wire for open/short circuit and damage.
Q: Are the harness wires in good condition?

YES : Go to Step 18.
NO : Repair or replace the damaged harness wire. Then go

to Step 23.

STEP 18. Check the radiator fan relay, the condenser fan
relay and the fan control relay.
Refer to

P.14-31

Q: Are the relays in good condition?

YES : Go to Step 19.
NO : Replace the damaged relay. Then go to Step 23.

STEP 19. Check the radiator fan motor and the condenser
fan motor.
Refer to

P.14-33

Q: Are the fan motors in good condition?

YES : Go to Step 20.
NO : Replace the damaged fan motor (Refer to

P.14-52

Then go to Step 23.

ENGINE COOLING DIAGNOSIS

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ENGINE COOLING

14-22

STEP 20. Using scan tool MB991958, read the ETACS
system DTC.
Using scan tool to read the ETACS system DTC (Refer to
GROUP 54A, ETACS, Troubleshooting

− Diagnostic Function

P.54A-729

Q: Is any DTC set?

YES : Replace the ETACS-ECU (Refer to GROUP 54A,

ETACS

− ETACS-ECU

P.54A-825

). Then go to Step

23.

NO : Go to Step 21.

STEP 21. Using scan tool MB991958, check the MFI system
actuator test.
Using scan tool to check the MFI system actuator test (Refer to
GROUP 13B, MFI Diagnosis

− Diagnostic Function

P.13B-11

• Item 14: Cooling fan

(Refer to GROUP 13B, MFI Diagnosis

− Actuator Test Ref-

erence Table

P.13B-858

)

Q: Is the check result normal?

YES : Go to Step 22.
NO : Replace the ECM [Refer to GROUP 13B, Engine

Control Module (ECM)

P.13B-903