Page 1225 of 3870
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
2. Connect special tool MB991923 (check harness) between the PCM and
the bod
y-side harness connector.
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor
Page 1228 of 3870
NO: Go to Step 4.
STEP 4. Check fan control module connector A23 and PCM connector B-
18 for loose, corroded or damaged terminals, or terminals pushed back in
the connector.
Fig. 30: Locating Connector A
-23
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor
Page 1229 of 3870
Fig. 31: Checking Connector B
-18
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor
Page 1230 of 3870
Q: Are the connectors in good condition?
YES: Go to Step 5.
NO: Repair or replace the damaged components.
STEP 5. Check the harness wire between PCM connector B-18 (terminal
10) and fan control module connector A-23 (terminal 2)
.
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor
Page 1232 of 3870
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
Fig. 33: Identifying Connector A
-23
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Are the harness wires between PCM connector B-18 and fan control
module connector A-23 damaged?
YES: Repair or replace them, then go to Step 7 .
NO: Go to Step 6.
STEP 6. Check the fan control module at PCM connector B-18.
1. Disconnect PCM connector
B-18.
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor
Page 1234 of 3870
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
2. Pull out the pin 10 and connect it to the body ground.
Fig. 35: Checking Fan Control Module
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Reconnect PCM connector B-18 with pin 10 still removed.
4. Turn the ignition switch to the "ON" position.
Q: Do the radiator fan motor and condenser fan motor stop?
YES: Re
place the PCM. Then
go to Ste
p 7.
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor
Page 1235 of 3870
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
Page 1236 of 3870
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
