626 LX L4-2.0L DOHC (1999)
1-2 SHIFT OPERATION
The PCM controls a 1-2 shift by turning to Shift solenoid 1 (SS1) OFF while Shift solenoid 2 (SS2) remains ON. This results in spring force moving
the 1-2 shift valve to the left side. In second gear, the 2/4 band is applied and the direct clutch is released.
To apply the 2/4 band, fluid under line pressure from the D21 circuit moves through the 1-2 shift valve, 2-3 shift valve and 3-4 shift valve and several
circuits. Fluid in the SA circuit from the 3-4 shift valve applies the 2/4 band. Fluid in the circuits to apply the 2/4 band also moves through the 3-2
control valve and into the ACC circuit for the 2/4 accumulator. As pressure builds during band apply, it is modulated by the accumulator.
