626 LX L4-2.0L DOHC (1999)
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SHIFT SOLENOID 1 (SS1) HYDRAULIC CIRCUIT
Fluid under SF circuit pressure flows through SS1 when the PCM turns it to ON. SSI is at ON in the D, 2 and 1 range/first gear, as well as in D
range/fourth gear.
When SS1 is at ON in first gear, fluid under pressure in the S1 hydraulic circuit moves the 1-2 shift valve, but not the 3-4 shift valve. The reason for
this is that the fluid under line pressure in the L1 circuit prevents movement of the 3-4 shift valve in the first gear.
When SS1 is at ON in the fourth gear, fluid under pressure in the SI hydraulic circuit moves the 3-4 shift valve, but not the 1-2 shift valve. The reason
for this is that the fluid under line pressure in the L34 circuit prevents movement of the 1-2 shift valve in the fourth gear.
When SS1 is at OFF, the SI circuit connects to exhaust while the SF circuit is blocked.