Shift Control - Grade Logic Control
The grade logic control system is used to control shifting in D, D3 (seven-position transmission), and S with automatic shift mode (five-position transmission). To control shifting while the vehicle is ascending or descending a slope, the PCM compares actual driving conditions with memorized driving conditions, based on the input from the accelerator pedal position sensor, the throttle position sensor, the engine coolant temperature sensor, the barometric pressure sensor, the brake pedal position switch signal, and the shift lever position signal.