ECT Sensor 2 Replacement

Drain the engine coolant (see COOLANT CHECK ).
Remove the splash shield.
Disconnect the ECT sensor 2 connector (A).

Fig 1: ECT Sensor 2, Connector And O-Ring With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove ECT sensor 2 (B).
Install the parts in the reverse order of removal with a new O-ring (C) coated with clean engine oil, then refill the radiator with engine coolant (see COOLANT CHECK ).