Commander 2WD V8-4.7L VIN P Flex Fuel (2007)
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7 check balls
Operation
OPERATION
NOTE: Refer to the Hydraulic Schematics for a visual aid in determining valve location, operation and design.
SOLENOID SWITCH VALVE
The Solenoid Switch Valve (SSV) controls the direction of the transmission fluid when the L/R-TCC solenoid is energized.
The Solenoid Switch Valve controls line pressure from the LR-TCC solenoid. In 1st gear, the SSV will be in the downshifted position, thus directing
fluid to the L/R clutch circuit. In 2nd, 3rd, 4th, and fifth gears, the solenoid switch valve will be in the upshifted position and directs the fluid into the
torque converter clutch (TCC) circuit.
When shifting into 1st gear, a special hydraulic sequence is performed to ensure SSV movement into the downshifted position. The L/R pressure switch
is monitored to confirm SSV movement. If the movement is not confirmed (the L/R pressure switch does not close), 2nd gear is substituted for 1st. A
DTC will be set after three unsuccessful attempts are made to get into 1st gear in one given key start.
MANUAL VALVE
