Shift Control

WARNING: This page is about a different car, the 2004 Honda Odyssey, 2003 Honda Odyssey, and 2002 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.

The PCM instantly determines which gear should be selected by various signals sent from sensors and switches, and it actuates the shift solenoid valves A, B, and C to control shifting.

Also, as grade logic control system has been adopted to control shifting in the D and D3 positions. The PCM compares actual driving conditions with memorized driving conditions, based on the input from 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, to control shifting while the vehicle is ascending or descending a slope.

Fig 1: Electronic Control System Shift Control Functional Diagram

Courtesy of AMERICAN HONDA MOTOR CO., INC.

The PCM turns on the shift solenoid valves A, B, and C to control shifting transmission gear. The combination of driving signals to shift solenoid valves A, B, and C are shown in the table.

Fig 2: Shift Solenoid Valve Application Table

Courtesy of AMERICAN HONDA MOTOR CO., INC.