FixVault

Shift Control - Grade Logic Control

The grade logic control system has been included to improve shifting in D. The PCM compares actual driving conditions with programmed driving conditions, based on the input from the accelerator pedal position sensor, the engine coolant temperature sensor, the barometric pressure sensor, the brake pedal position switch, and the transmission range switch, to improve shifting while the vehicle is ascending or descending a slope.

Fig 1: Shift Control (Grade Logic Control) - Communication Diagram
G06966803Courtesy of AMERICAN HONDA MOTOR CO., INC.