Fan Control Module Check

Remove the fan control module connector.
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: Measuring Voltage Between Harness-Side Connector Terminals
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Connect the fan control module connector, and disconnect the condenser fan motor connector.
Ensure that the A/C switch is off, and start the engine and run it at idle.
Measure the voltage between the fan control module-side connector terminals.
Standard value: 1 V or less
Turn the A/C switch to the "ON" position.
WARNING: Stay clear of the fan when the fan starts running.
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 V 2)

2) Battery positive voltage+/-2.6 V
If the voltage does not repeatedly change as indicated, replace the fan control module.

Fig 2: Measuring Voltage Between Fan Control Module-Side Connector Terminals
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.