Reverse

REVERSE





When the gear selector lever is moved to the reverse (R) position (from the park position), the following changes occur in the transaxle's hydraulic and electrical systems.


Pressure Regulation
Manual Valve: With the manual valve in the reverse position, line pressure is directed into the reverse fluid circuit, in addition to the PRND4 and PRN fluid circuits as in park.
Pressure Regulator and Boost Valves: Reverse fluid is routed to the boost valve and assists torque signal fluid pressure. The addition of reverse fluid pressure increases the operating range of line pressure in reverse.
TR Switch: Reverse fluid is routed through the 1-2 shift valve and to the TR Switch. The TR Switch signals the PCM that the transaxle is in reverse.


Reverse Clutch Applies
Reverse Clutch: Reverse clutch fluid pressure applies the reverse clutch.

Lo and Reverse Band Remains Applied:
1-2 Shift Solenoid: The PCM keeps the solenoid energized in reverse and 1-2 signal fluid pressure acts on the 1-2 shift valve.
1-2 Shift Valve: 1-2 signal fluid pressure keeps the 1-2 shift valve in the downshifted position. Lo/PRN fluid continues to feed the lo band fluid circuit.
Lo and Reverse Servo: Reverse fluid is routed to the outer area of the servo to increase the servo apply pressure in reverse.


Torque Converter Clutch
Pressure Regulator Valve: Line pressure is routed through the PR valve and into the converter feed fluid circuit. Converter feed fluid is routed to the TCC feed limit valve.
TCC Feed Limit Valve: Converter feed fluid is routed through the valve and into the TCC feed limit fluid circuit. The TCC feed limit valve limits the maximum fluid pressure in the TCC feed limit fluid circuit and the torque converter.
TCC Regulated Apply Valve: Spring force holds the valve in the release position, thereby blocking line pressure.
TCC Control Valve: Spring force holds the valve in the release position and TCC feed limit fluid is routed into the release fluid circuit. Also, fluid returning from the converter in the apply fluid circuit is routed through the valve and into the cooler fluid circuit.
Torque Converter: Release fluid pressure is routed to the torque converter to keep the TCC released. Fluid leaves the converter in the apply fluid circuit.


Cooler and Lube
Lube 1: Cooler fluid is routed through the transaxle oil cooler located in the vehicle radiator and into the lube 1 fluid circuit. Lube 1 fluid is routed through the input shaft to lubricate transaxle components in the front of the transaxle.
Lube 2: The lube 2 fluid circuit is fed by line pressure at the pressure regulator valve. Lube 2 fluid is routed through the oil feed pipes and into the forward clutch support. Lube 2 fluid provides lubrication in the rear of the transaxle.

Important: The explanation in each gear range is, for the most part, limited to what changes from the previous range. However, some component descriptions are repeated for clarity and continuity.