Reverse Position
Transaxle Operation
Transaxle Operation Overview Transaxle Operation Overview
Park Position
Reverse Position (below)
Neutral Position
1st Gear Above 6 km/h (4 mph)
2nd Gear
3rd Gear
4th Gear
5th Gear
6th Gear Torque Converter Clutch (TCC) Applied
5th Gear Failsafe
Reverse Position
Mechanical Operation
Apply components:
- Low/reverse clutch applied
- Direct (3, 5, R) clutch applied
Planetary Gearset Operation
Front planetary gearset driven components:
- Planetary carrier
Center planetary gearset driven components:
- Sun gear (does not contribute to power flow)
Rear planetary gearset driven components:
- Sun gear
Front planetary gearset held components:
- None
Center planetary gearset held components:
- Center ring (does not contribute to power flow)
Rear planetary gearset held components:
- Planetary carrier
Reverse Position Clutch Application Chart
For component information, refer to Mechanical Components and Functions Mechanical Components and Functions.
Reverse Position Power Flow
Hydraulic Operation
Line pressure hydraulic circuits:
- Line pressure from the pump is supplied to the main pressure regulator valve, low reverse/456 regulator valve, manual valve, solenoid regulator valve and control pressure regulator.
- Line pressure is controlled by the position of the main pressure regulator valve.
- The position of the main pressure regulator valve is controlled by varying pressure from the LPC solenoid through the VBS LINE circuit.
Torque converter circuits:
- Regulated line pressure from the main pressure regulator valve is directed to the TCC control valve through the CONV FD hydraulic circuit.
- When the TCC is released, CONV FD pressure is directed to the TCC RELEASE circuit by the TCC control valve. Pressure from the TCC RELEASE circuit releases the TCC.
- Fluid from the TCC RELEASE returns to the TCC control valve through the TCC APPLY circuit.
Cooler and lubrication hydraulic circuits:
- The TCC control valve directs fluid from the TCC APPLY circuit (return circuit from the torque converter when the TCC is released) to the COOLER FD circuit.
- In the COOLER FD circuit, transmission fluid flows through the transmission fluid cooler or the thermal bypass valve to the LUBE circuit in the input shaft to supply lubrication to the transaxle.
Solenoid hydraulic circuits:
- The LPC solenoid applies varying pressure to the main pressure regulator valve through the VBS LINE hydraulic circuit. The LPC solenoid regulates line pressure by controlling the position of the main pressure regulator valve.
- SSB applies pressure to the 35R regulator and latch valves to apply the direct (3, 5, R) clutch.
- SSD applies pressure to the low reverse/456 regulator valve to apply the low/reverse clutch.
- SSE applies pressure to the clutch control bypass valve to position the valve to direct regulated line pressure in the CBR1/C456 circuit to the CBR1 circuit to apply the low/reverse clutch.
Clutch hydraulic circuits:
- Line pressure supplied to the manual valve is directed to the clutch control bypass valve through the REVERSE circuit.
- The clutch control bypass valve directs the REVERSE circuit to the 35R regulator valve through the C35R FD circuit, DRIVE 2/C35R FD shuttle ball and DRIVE 2/C35R FD circuit. To apply the direct (3, 5, R) clutch, SSB applies varying solenoid pressure to the 35R regulator and latch valves. As the 35R regulator valve moves, it supplies the direct (3, 5, R) clutch and 35R latch valve with regulated line pressure through the C35R circuit. The 35R latch valve directs the regulated line pressure to the opposite side of the 35R regulator valve through the C35R FDBK circuit for gradual direct (3, 5, R) clutch engagement.
- Line pressure from the pump is supplied to the low reverse/456 regulator valve. To apply the low/reverse clutch, SSD supplies varying solenoid pressure to the low reverse/456 regulator and latch valves. As the regulator valve moves, it supplies the clutch control bypass valve and low reverse/456 latch valve with regulated line pressure through the CBR1/C456 circuit. The low reverse/456 latch valve directs the regulated line pressure to the opposite side of the regulator valve through the CBR1/C456 FDBK circuit for gradual low/reverse clutch engagement.
- Regulated line pressure at the clutch control bypass valve in the CBR1/C456 circuit is directed to the low/reverse clutch through the CBR1 circuit to apply the clutch.
For additional hydraulic circuit information, refer to Hydraulic Circuits Hydraulic Circuits.
Electrical Operation
Solenoid operation:
Reverse Position Solenoid Operation Chart
NC = Normally closed
NH = Normally high
NL = Normally low
