Fluid Pressure Directed In Preparation For a Shift

WARNING: This page is about a different variant/trim than selected.

VFS S4 Solenoid

The VFS S4 solenoid is energized at low pressure allowing LINE fluid to enter the S4 VFS SIGNAL fluid circuit. S4 VFS SIGNAL fluid is directed to the mode 2 ETRS valve and 4th clutch regulator valve.

Mode 2 ETRS Valve

S4 VFS SIGNAL fluid is routed to the mode 2 ETRS valve applying pressure against mode 2 ETRS valve spring force. This allows FEED 0 fluid to be directed into the REVERSE fluid circuit. REVERSE fluid is then directed to the #17 ball check valve and the clutch selector valve.

4th Clutch Regulator Valve

S4 VFS SIGNAL fluid is routed to the 4th clutch regulator valve applying pressure against 4th clutch regulator valve spring force. Pressure on the 4th clutch regulator valve is low enough to not apply the 4th clutch.

#17 Ball Check Valve

REVERSE fluid seats the #17 ball check valve against the FEED 1 fluid circuit. The REVERSE fluid seats the #16 ball check valve and is routed thru orifice #80 into the PARK OFF fluid circuit. PARK OFF fluid is directed to the park release servo piston.

Park Release Servo Piston

PARK OFF fluid is directed to the park release servo piston applying pressure against park release servo piston spring force. The park inhibit solenoid is then energized on.

Clutch Select Control Solenoid

The clutch select control solenoid energizes allowing ACTUATOR FEED LIMIT fluid to enter the CLUTCH SELECT SOLENOID fluid circuit. CLUTCH SELECT SOLENOID fluid is routed to the TCC regulator apply valve and the clutch selector valve.

Clutch Selector Valve and #12 Ball Check Valve

CLUTCH SELECT SOLENOID fluid is routed thru orifice #41 and seats the #12 ball check valve against the 1 REVERSE APPLY fluid circuit which allows CLUTCH SELECT SOLENOID fluid to enter the CLUTCH SELECT VALVE SIGNAL fluid circuit. CLUTCH SELECT VALVE SIGNAL fluid circuit is directed to the clutch selector valve applying pressure against clutch selector valve spring force. REVERSE fluid from the mode 2 ETRS valve is routed to the clutch selector valve which is directed into the REV/57R FEED fluid circuit. REV/57R FEED fluid is directed to the #9 ball check valve.

#9 Ball Check Valve

REV/57R FEED fluid seats the #9 ball check valve against the DRIVE 2 fluid circuit allowing REV/57R FEED to enter the 57R CLUTCH FEED fluid circuit. The 57R CLUTCH FEED fluid is routed thru orifice #46 and to the #8 ball check valve.

#8 Ball Check Valve

The 57R CLUTCH FEED fluid seats the #8 ball check valve and is forced thru orifice #46. 57R CLUTCH FEED fluid is routed to the 5-7 reverse clutch boost valve and to the 5-7 reverse regulator valve.

5-7 Reverse Clutch Boost Valve

The 57R CLUTCH FEED fluid seats the #8 ball check valve and is forced thru orifice #46. 57R CLUTCH FEED fluid is routed to the 5-7 reverse clutch boost valve awaiting valve shift.

5-7 Reverse Regulator Valve

The 57R CLUTCH FEED fluid is routed to the 5-7 reverse regulator valve awaiting valve shift.