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Home › Mitsubishi › 2003 › Outlander LS, AWD › Repair and Diagnosis › Engine Mechanical › Cooling System (Mechanical) › Engine Cooling › On-Vehicle Service › Fan Controller Check

Fan Controller Check

  1. Remove the fan controller 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: Removing Fan Controller Connector & Measuring Voltage Between Harness-Side Connector Terminals
    G01864440Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  3. Connect the fan controller 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 controller-side connector terminals.

    Standard value: 1V or less 

    Fig 2: Measuring Voltage Between Fan Controller-Side Connector Terminals
    G01864441Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  6. Turn the A/C switch to the "ON" position.
    7. WARNING: Stay clear of the fan when the fan starts running.
  7. Measure the voltage between the fan controller-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 V 
    2. Battery positive voltage +/- 2.6 V 

  8. If the voltage does not repeatedly change as indicated, replace the fan controller.
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