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Home >> Mitsubishi >> 2007 >> Eclipse SE, Standard >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling >> On-Vehicle Service >> Fan Control Module Check < 3.8L Engine >
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Fan Control Module Check < 3.8L Engine >

  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 

    Fig 1: Identifying Fan Control Module 3 Terminal Connector
    G04236983Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  3. Connect the fan control module connector, and disconnect the condenser fan motor connector
  4. Ensure that the A/C switch is off, and start the engine and run it at idle
  5. Measure the voltage between the fan control module-side connector terminals

    Standard value: 1 volt or less 

    WARNING: Stay clear of the fan when the fan starts running.
    Fig 2: Identifying Condenser Fan Motor 2 Terminal Connector
    G04236984Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  6. Turn the A/C switch to the "ON" position
  7. Measure the voltage between the fan control module-side connector terminals while the fan is running. The voltage should repeat the values 1) and 2) below

    Standard value: 

    1. 8.2 +/- 2.6 volts 
    2. Battery positive voltage +/- 2.6 volts 
  8. If the voltage does not repeatedly change as indicated, replace the radiator fan motor
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