Shift Control Mechanism

To shift gears, the PCM controls shift solenoid valves A, B, C and D, and automatic transmission (A/T) clutch pressure control solenoid valves A, B, and C The shift solenoid valves change the positions of the shift valves in the valve body which open and close ports to send hydraulic pressure to the appropriate clutch A/T clutch pressure control solenoid valves A, B, and C change the position of CPC valves A and B, and the reverse CPC valve, to control hydraulic pressure going to the clutches, which allows smooth shifts between gears