ECT Sensor 2 Replacement

Drain the engine coolant (see COOLANT CHECK ).
Raise the vehicle on a lift.
Disconnect the ECT sensor 2 connector (A), then remove ECT sensor 2 (B).

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