Input Shaft (Mainshaft) Speed Sensor Replacement: M/T

Raise the vehicle on a lift.
Remove the splash shield.
Disconnect the input shaft (mainshaft) speed sensor connector (A).

Fig 1: Identifying Input Shaft (Mainshaft) Speed Sensor With Connector And O-Ring
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the input shaft (mainshaft) speed sensor (B).
Install the parts in the reverse order of removal with a new O-ring (C).
If needed, refill the manual transmission fluid (see TRANSMISSION FLUID INSPECTION AND REPLACEMENT ).