Radiator Fan Switch Replacement

Drain the engine coolant (see COOLANT CHECK ).
Disconnect the radiator fan switch connector, then remove the radiator fan switch (A).

Fig 1: Disconnecting Radiator Fan Switch Connector With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the radiator fan switch with a new O-ring (B).
Fill the reserve tank and radiator with engine coolant, and bleed the air from the cooling system with the heater valve open (see step 8 on COOLANT REPLACEMENT ).