To test the auxiliary electric fan motor on air-conditioned models, unplug the electrical connector and use fused jumper wires to connect the fan directly to the battery; if it doesn't work, replace the motor. If the motor functions properly, the issue may be with the condenser fan motor relay, dual switch, air conditioner amplifier, or the wiring, which should be carefully checked for any faults. For a belt-driven fan with a viscous clutch, start by disconnecting the negative battery cable and checking for excessive play in the fan clutch by rocking it back and forth. With the engine cold, manually turn the fan blades to ensure they rotate freely, and inspect for any significant fluid leakage from the clutch assembly, replacing it if necessary. After warming up the engine, turn off the ignition and check for drag when turning the fan by hand; if it turns easily, the fan clutch should be replaced. For removal, disconnect the negative battery cable, remove the front bumper and grille, unplug the fan wire harness, unbolt the fan bracket and shroud assembly, and lift it out of the vehicle. Detach the fan from the motor by removing the motor shaft fastener and the mounting nuts from the bracket. For the belt-driven fan, after disconnecting the negative battery cable, remove the fan shroud and the bolts/nuts attaching the fan/clutch assembly to the water pump hub, then lift the assembly out of the engine compartment. Inspect the fan blades for damage and replace if necessary, and if needed, unbolt the fan from the clutch. Installation is the reverse of removal, ensuring that all mounting nuts and bolts are tightened evenly and securely.