Fan Controller Check

WARNING: This page is about a different car, the 2004 Mitsubishi Eclipse. However, it is still accessible from the selected car via links, so may be relevant.

Remove condenser fan motor connector.
Start the engine and run it at idle.
Turn the A/C switch to ON and maintain the coolant temperature at 80°C (176°F) or less.

Fig 1: Measuring Voltage Between Fan Controller-Side Connector Terminals

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

When measuring the voltage between the fan controller-side connector terminals, check that the value changes repeatedly as indicated by (1) - (3) below.
1. 0 V
2. 8.2 plus/minus 2.6V
3. Battery positive voltage plus/minus 2.6 V
If the voltage does not repeatedly change as indicated, replace the radiator fan motor and the fan controller assembly.