Reverse Inhibitor Control
When R is selected while the vehicle is moving forward at a speed above 6 mph (10 km/h), the PCM turns shift solenoid valves A and C ON, and shift solenoid valves B and D OFF. Shift solenoid valve D is kept OFF, and shift valve D is kept in the left side to cover the line pressure port (3) leading to the servo valve. The servo valve is kept in the forward position. Shift solenoid valve A is turned ON, shift valve A is moved to the right side and covers the port to stop line pressure (1 A) leading to the 5th clutch. The servo valve is not applied line pressure, the 5th clutch is not applied 5th clutch pressure, as a result, power is not transmitted to the reverse direction.
NOTE:
- When used, "left" or "right" indicates direction on the hydraulic circuit.
- The illustration shows the seven-position transmission; the manual-valve-position differs in the five-position transmission.