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 splash shield (A).

Fig 1: Identifying Splash Shield
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the damper from the front subframe.

Fig 2: Damper & Front Subframe Bolts With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Disconnect the input shaft (mainshaft) speed sensor connector, and remove the input shaft (mainshaft) speed sensor (A).

Fig 3: O-Ring On Input Shaft (Mainshaft) Speed Sensor With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the new O-ring (B) on the new input shaft (mainshaft) speed sensor, then install the input shaft (mainshaft) speed sensor in the transmission housing.
Check the connector for rust, dirt, or oil, and clean if necessary, then connect it securely.
Install the damper on the front subframe.
Install the splash shield.