Reverse Inhibitor Control

When R is selected while the vehicle is moving forward at speeds over 6 mph (10 km/h), the PCM commands shift solenoid valve C to remain OFF so that shift solenoid valve C pressure (SC) is not applied to the reverse inhibitor valve. Line pressure (3) stops at the reverse inhibitor valve, and is not applied to the shift fork shaft. This control does not switch to the hydraulic circuit leading to reverse while the vehicle is moving forward at speeds over 6 mph (10 km/h).

Fig 1: Reverse Inhibitor Control - Hydraulic Flow Diagram

Courtesy of AMERICAN HONDA MOTOR CO., INC.