MITSUBISHI ENDEAVOR 2004 Service Repair Manual

the radiator fan is operating is less than 0.7V, go to next step. If the voltage
when the radiator fan is operating is 0.7V or more, go to step 13 .
12. Check the Blue/Orange wire between terminal No. 10 of PCM connector B-18
(Green) and terminal No. 2 of fan control module connector A-23. See Fig. 7

and Fig. 11
. If wiring is damaged repair or replace as necessary and retest. If
wiring is okay, go to next step.
13. Pull out terminal No. 10 of PCM connector B-18 (Green). See Fig. 11
. Turn
the ignition switch to the ON position. If the radiator fan motor and condenser
fan motor operate, replace the PCM and retest. If the radiator and the
condenser fan motor do not operate, replace the radiator fan motor and retest.
Fig. 7: Locating Fan Control Module Connector (A
-23)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
NOTE: Do not disconnect PCM connector B-18 (Green).

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Fig. 8: Locating Fan Control Relay Connector (A
-10X)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

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Fig. 9: Locating Intermediate Connector (A
-13)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

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Fig. 10: Locating Multi
-Port Fuel Injection (MFI) Relay Connector (B
-16X)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

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Fig. 11: Locating Powertrain Control Module (PCM) Connector (B
-18)

Courtes
y of MITSUBISHI MOTOR SALES OF AMERICA
.

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2004 ENGINE COOLING Electric Cooling Fans - Endeavor

Fig. 12: Identifying Power Plant ECU Check Harness (MB991923)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
TEST B: RADIATOR FAN & CONDENSER FAN DO NOT CHANGE SPEED OR STOP Technical Description The fan control module has variable control of the radiator fan motor and the
condenser fan motor speeds using signals transmitted from the PCM. Troubleshooting Hints
Malfunction of fan control relay. Malfunction of fan control module. Malfunction of PCM.
Diagnosis 1. Check the fan control relay. See FAN CONTROL RELAY
under
COMPONENT TESTS. If fan control relay is okay, go to next step. If fan
control module is damaged, repair or replace as necessary and retest.
2. Check the harness wire between terminal No. 2 of fan control relay connector
A-10X and terminal No. 3 of fan control module connector A-18. See Fig. 7

and Fig. 8
. If wiring is damaged, repair or replace as necessary and retest. If
wiring is okay, go to next step.
3. Disconnect all the connectors from the PCM. Connect Power Plant ECU Check
Harness (MB991923
) between the PCM and the bod
y-side harness connector.
NOTE: If the engine coolant temperature reaches 230°F (110°C) or
higher, the radiator fan control runs the radiator fan for up
to 5 minutes even after the ignition switch is turned to the
LOCK position. The fan stops its rotation when the engine
coolant temperature decreases to 230°F (110°C) or l ower.
NOTE: Measure the output circuit voltage at terminal No. 10 of
PCM connector B-18 by using Power Plant ECU Check
Harness (MB991923). See Fig. 11
and Fig. 12
.

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See Fig. 12
. Start the engine and allow it to idle. Measure the voltage between
terminal No. 10 of connector B-18 and ground. See Fig. 12
. If the voltage
when the radiator fan is not operating is more than 0.3V, go to next step. If the
voltage when the radiator fan is not operating is less than 0.3V, retest.
4. Check fan control module connector A-23 and PCM connector B-18 for loose,
corroded, or damaged terminals, or terminals pushed back in the connector.
See Fig. 7
and Fig. 11
. If connectors are okay, go to next step. If connectors
are damaged, repair or replace as necessary and retest.
5. Check the harness wire between terminal No. 10 of PCM connector B-18
(Green) and terminal No. 2 of fan control module connector A-23. See Fig. 7

and Fig. 11
. If wiring is damaged repair or replace as necessary and retest. If
wiring is okay, go to next step.
6. Disconnect PCM connector B-18 (Green). See Fig. 11
. Pull out pin No. 10 and
connect it to a body ground. Reconnect PCM connector with pin No. 10 still
removed. Turn the ignition switch to ON position. If the radiator fan motor and
condenser fan motor fan motor stop operating, replace the PCM and retest. If
the radiator fan motor and condenser fan motor do not stop operating, replace
the fan control module and retest.
TEST C: RADIATOR FAN DOES NOT OPERATE Technical Description The cause could be a malfunction of the radiator fan motor or an open circuit
between the fan control module and the radiator fan. Troubleshooting Hints
Malfunction of radiator fan motor.
Diagnosis If radiator fan does not operate, replace the radiator fan.
NOTE: Check terminal No. 7 of intermediate connector A-13,
repair it and then check wiring. See Fig. 9
.

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TEST D: CONDENSER FAN DOES NOT OPERATETechnical Description The cause could be a malfunction of the condenser fan motor or an open circuit
between the fan control module and the radiator fan. Troubleshooting Hints
Malfunction of condenser fan motor. Malfunction of fan control module.
Diagnosis 1. Check the condenser fan motor. See CONDENSER FAN MOTOR
under
COMPONENT TESTS. If condenser fan motor is okay, go to next step. If
radiator fan motor is not okay, replace radiator fan motor and retest.
2. Check the fan control module. See FAN CONTROL MODULE
under
COMPONENT TESTS. If fan control module is okay, retest. If fan control
module is not okay, replace radiator fan motor and retest.
REMOVAL & INSTALLATION RADIATOR FAN Removal & Installation 1. Drain engine coolant.
2. Remove air cleaner.
3. Remove radiator grille.
4. Remove rubber hose. See Fig. 13
.
5. Remove radiator upper hose.
6. Disconnect fan motor connector.
7. Remove shroud assembly.
8. Remove radiator fan.
9. Remove radiator fan motor (integrated with fan control module).
10. Remove condenser fan.

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11. Remove condenser fan motor.
12. To install, reverse removal procedures.
Fig. 13: Exploded View Of Radiator & Radiator Fans

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
WIRING DIAGRAMS See COOLING FAN in appropriate SYSTEM WIRING DIAGRAMS article in
ELECTRICAL.
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