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Fig. 20: Connecting Special Tool MB991923 Between PCM & Body Side Harness
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Start the engine and allow it to idle.
4. Measure the voltage between terminal number 10 and ground.
Fig. 21: Measuring Voltage Between Terminal No. 10 and Ground
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Is the voltage 0.7 volt or more when the radiator fan is operating?
YES: Go to Step 1
3.
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NO: Go to Step 12.
STEP 12. Check the harness wire between PCM connector B-18 and fan
control module connector A-23.
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Fig. 22: Checkin
g Harness Wire Between PCM Connector
B-18 And Fa
n
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Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
Fig. 23: Locating Connector A
-23
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Are the harness wires between PCM connector B-18 (terminal 10) and
fan control module connector A-23 (terminal 2) damaged?
YES: Repair or replace them, then go to Step 14 .
NO: Go to Step 13.
STEP 13. Check the fan control module at PCM connector B-18 (terminal
10).
1. Do not disconnect PCM connector B-18.
2. Pull out terminal number 10.
3. Turn the i
gnition switch to the "ON"
position.
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Q: Do the radiator fan motor and condenser fan motor operate?
YES: Replace the PCM. Then go to Step 14.
NO: Replace the radiator fan motor. Then go to Step 14.
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Fig. 24: Locating Connector B
-18
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Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
STEP 14. 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 4: Radiator Fan and Condenser Fan do not Change Speed or Stop 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 The fan controller has variable control of the radiator fan motor and the condenser
fan motor speeds using signals transmitted from the PCM. TROUBLESHOOTING HINTS NOTE: If the engine coolant temperature reaches 110°C (230°F) 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" (OFF) position [the fan stops its rotation when the
engine coolant temperature decreases to 110°C (230° F) or
lower.]
2004 Mitsubishi Endeavor Limited 2004 ENGINE Engine Cooling - Endeavor
