2004 MITSUBISHI ENDEAVOR engine coolant

NO: Replace the radiator fan motor. Then go to Step 7.
STEP 7. Check the symptoms.
Q: Do the radiator fan and condenser fan operate correctly?
YES: The procedure is complete.
NO: Return to Step 1 .
INSPECTION PROCEDURE 5: 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 motor. TROUBLESHOOTING HINTS Malfunction of radiator fan motor DIAGNOSIS Replace the radiator fan motor. INSPECTION PROCEDURE 6: Condenser Fan does not Operate Radiator Fan and Condenser Fan Drive Circuit Refer to INSPECTION PROCEDURE 3: RADIATOR FAN AND CONDENSER FAN DO NOT OPERATE
.
CIRCUIT OPERATION
The fan control module is powered from fusible link number 2. The PCM judges the required revolution speed of radiator fan motor and
condenser fan motor using the input signals transmitted from A/C switch,
automatic compressor controller, vehicle speed sensor and engine coolant
temperature sensor. The PCM activates the fan control module to drive the
radiator fan motor and condenser fan motor.
TECHNICAL DESCRIPTION
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

The cause could be a malfunction of the condenser fan motor or fan control module.TROUBLESHOOTING HINTS
Malfunction of condenser fan motor Malfunction of fan control module
DIAGNOSIS
STEP 1. Check the condenser fan motor.
Refer to CONDENSER AND CONDENSER FAN MOTOR
.
Q: Is the condenser fan motor in good condition?
YES: Go to Step 2.
NO: Replace the condenser fan motor, then go to Step 3 .
STEP 2. Check the fan control module.
Refer to FAN CONTROL MODULE CHECK
.
Q: Is the fan control module in good condition?
YES: Go to Step 3.
NO: Replace the radiator fan motor, then go to Step 3.
STEP 3. Check the symptoms.
Q: Does the condenser fan operate correctly?
YES: The procedure is complete.
NO: Return to Step 1 .
ON-VEHICLE SERVICE ENGINE COOLANT LEAK CHECK
WARNING:When pressure testing the cooling system, slowly
release cooling system pressure to avoid getting

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

1. Check that the coolant level is up to the filler neck. Install a radiator tester and
apply 160 kPa (23 psi) pressure, and then check for leakage from the radiator
hose or connections.
burned by hot coolant.
CAUTION:
Be sure to completely clean away any moisture
from the places checked. When the tester is taken out, be careful not to
spill any coolant. Be careful when installing and removing the
tester and when testing not to deform the filler
neck of the radiator.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
3. Replace the radiator cap if the reading does not remain at or above the limit.
ENGINE COOLANT REPLACEMENT 1. Drain the water from the radiator, heater core and engine after unplugging the
radiator drain plug and removing the radiator cap.
2. Drain the water in the water jacket by unplugging the drain plug of the cylinder
block. For the right bank side on AWD vehicles, drain the engine coolant from
the water feed tube assembly of the transfer box.
3. Remove the radiator condenser tank assembly and drain the coolant.
4. Drain the coolant then clean the path of the coolant by injecting water into the
radiator from the radiator cap area.
WARNING:When removing the radiator cap, use care to avoid
contact with hot coolant or steam. Place a shop
towel over the cap and turn the cap
counterclockwise a little to let the pressure escape
through the vinyl tube. After relieving the steam
pressure, remove the cap by slowly turning it
counterclockwise.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

Fig. 41: Identifying Cylinder Block Drain Plug

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
6. Securely tighten the radiator drain plug.
7. Assemble the radiator condenser tank assembly.
8. By referring to the section on coolant, select an appropriate concentration for
safe operating temperature within the range of 30 to 60 %. Use MB991871 to
refill the coolant. A convenient mixture is a 50 % water and 50 % antifreeze
solution [freezing point: -31°C (-32.8 °F)].
Recommended antifreeze: Lon
g Life Antifreeze Coolant or an
CAUTION: Do not use alcohol or methanol anti-freeze or any
engine coolants mixed with alcohol or methanol
anti-freeze. The use of an improper anti-freeze
can cause corrosion of the aluminum
components.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

11. After repeatedly revving the engine up to 3,000 r/min several times, stop the
engine.
12. Remove the radiator cap after the engine has cooled, and pour in coolant up to
the brim. Reinstall the cap.
13. Add coolant to the radiator condenser tank assembly between the "FULL" and
"LOW" mark if necessary. ENGINE COOLANT CONCENTRATION TEST Refer to RECOMMENDED LUBRICANTS AND LUBRICANT CAPACITIES
.
FAN CONTROL MODULE CHECK 1. Remove the fan control module connector.
2. Turn the ignition switch to the "ON" position, and measure the voltage
between the harness-side connector terminals.
Standard value: Battery positive voltage
CAUTION: Do not overfill the radiator condenser tank
assembly.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

Fig. 59: Disconnecting Radiator Upper Hose

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
INSTALLATION SERVICE POINTS > >A<< O-RING INSTALLATION Insert the O-ring to the water pipe, and coat the outer portion of the O-ring with
water or en
gine coolant.
CAUTION: Do not allow engine oil or other grease to adhere to
the O-ring

2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor

Fig. 60: Installing O
-Ring

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
> >B<< ENGINE COOLANT TEMPERATURE SENSOR INSTALLATION Apply the specified sealant to the thread of the engine coolant temperature sensor,
and then tighten it to the specified torque.
Specified Sealant:3M(tm) AAD part number 8371 or equivalent
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor