Reverse Inhibitor Control

When the R position is selected while the vehicle is moving forward at speeds over 6 mph (10 km/h), the PCM turns shift solenoid valves A and C ON, and shift solenoid valve B remains ON. The reverse CPC valve is moved to the right side and covers the port to stop. Line pressure (3') to the servo valve. Line pressure (3') is not applied to the servo valve, and the 5th clutch pressure (50) is not applied to the 5th clutch, as a result, power is not transmitted to the reverse direction.

Fig 1: Hydraulic Flow Diagram - Reverse Inhibitor Control

Courtesy of AMERICAN HONDA MOTOR CO., INC.