Input Shaft (Mainshaft) Speed Sensor Replacement

Raise the vehicle on a lift, or apply the parking brake, block both rear wheels, and raise the front of the vehicle. Make sure it is securely supported.
Remove the front splash shield (see FRONT SPLASH SHIELD REPLACEMENT ).
Disconnect the input shaft (mainshaft) speed sensor connector, and remove the input shaft (mainshaft) speed sensor (A).

Fig 1: Input Shaft Speed Sensor With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install a new O-ring (B) on the new input shaft (mainshaft) speed sensor, then install the input shaft (mainshaft) speed sensor.
Check the connector for corrosion, dirt, or oil, and clean or repair if necessary, then connect the connector securely.
Install the front splash shield (see FRONT SPLASH SHIELD REPLACEMENT ).