Automatic Transmission - Theory & Operation, & Disassembly & Assembly - 6F50: Specifications Mercury Sable V

GENERAL SPECIFICATIONS

GENERAL SPECIFICATIONS

TORQUE SPECIFICATIONS TABLE

TORQUE SPECIFICATIONS TABLE

a Refer to the procedure in this article.

Scheme 25

This automatic transaxle is a 6-speed transaxle with electronic shift control. It is designed for operation in a transverse powertrain for Front Wheel Drive (FWD) and All-Wheel Drive (AWD) vehicles.

This transaxle has a 4-element torque converter design, which includes a Torque Converter Clutch (TCC) and a geartrain with 3 planetary gearsets.

The hydraulic control system of this transaxle uses a solenoid body with 7 electronically controlled solenoids for

1. Shift feel (through line pressure control and shift pressure control)
2. Shift scheduling and timing
3. TCC operation

Scheme 26

Scheme 27

When servicing the transaxle, use the identification tag located on top of the transaxle case.

Scheme 28

Scheme 29

Scheme 30

When servicing the solenoid body, use the identification tag located on top of the transaxle case.

Torque Converter

The torque converter transmits and multiplies torque. The torque converter is a 4-element device

1. Impeller and cover assembly
2. Turbine
3. Reactor
4. Clutch and damper assembly

Rotation of the torque converter housing and impeller set the transmission fluid in motion by driving the impeller blades and pump.

The turbine is driven by the transmission fluid from the impeller and transmits power to the input shaft.

The reactor redirects transmission fluid flow returned from the turbine to the impeller so that it rotates in the same direction as the impeller. This action assists in torque multiplication.

The reactor has a One-Way Clutch (OWC) to hold it stationary during torque multiplication and allows it to rotate at higher vehicle speeds.

Scheme 31

The Torque Converter Clutch (TCC) connects the torque converter housing to the damper when the TCC is applied.

During TCC release, the direction that the transmission fluid flows through the torque converter allows the TCC to release. During TCC apply, the transmission fluid flows in the opposite direction to apply the TCC.

The PCM controls TCC operation using the TCC solenoid in the solenoid body. TCC solenoid operation provides the modulation of hydraulic pressure to change the position of the TCC control valve and TCC regulator apply valve which changes the pressure and transmission fluid direction in the torque converter.

The TCC can be applied in 3rd, 4th, 5th and 6th gears.

Scheme 32

Torque Demand

The torque demand downshift occurs (automatically) during part throttle acceleration when the demand for torque is greater than the engine can provide at that gear ratio. If applied, the transmission will disengage the TCC to provide added acceleration.

Torque Converter Hydraulic Circuits

The PCM controls the TCC solenoid. The TCC solenoid applies hydraulic pressure to the TCC control and regulator apply valves through the TCC SOL SIG circuit. Regulated DRIVE 2 pressure from the multiplex shift valve is directed to the TCC control valve by the TCC regulator apply valve through the REG APPLY circuit. The TCC control valve directs pressure from the REG APPLY circuit to the TCC APPLY circuit to apply the clutch.

The transmission fluid returns to the TCC control valve through the TCC RELEASE hydraulic circuit. The TCC control valve opens the TCC RELEASE circuit to exhaust, so the TCC RELEASE circuit is not pressurized when the TCC is applied.

Scheme 33

When the TCC is released, The TCC solenoid does not apply hydraulic pressure to the TCC control or regulator apply valves. The TCC control valve, in this position, directs hydraulic pressure from the CONV FD circuit to the torque converter through the TCC RELEASE hydraulic circuit and it returns to the TCC control valve through the TCC APPLY circuit.

For torque converter description and function, refer to Torque Converter .

Scheme 34

Torque Converter Clutch (TCC) Solenoid

The TCC solenoid is used in the transaxle control system to control the application, modulation and release of the torque converter clutch.

This transaxle uses a torque converter with the following elements

1. Impeller
2. Turbine
3. Reactor
4. Torque Converter Clutch (TCC)

For component information, refer to Torque Converter .

3rd Gear Torque Converter Clutch (TCC) Released

Mechanical Operation - Apply components

1. Forward (1, 2, 3, 4) clutch
2. Direct (3, 5, R) clutch

Planetary Gearset Operation - Front planetary gearset driven components

1. Planetary carrier
2. Ring gear

Center planetary gearset driven components

1. Sun gear
2. Planetary carrier
3. Ring gear

Rear planetary gearset driven components

1. Sun gear
2. Planetary carrier
3. Ring gear

Front planetary gearset held components

1. Sun gear

Center planetary gearset held components

1. None

Rear planetary gearset held components

1. None

3RD GEAR CLUTCH APPLICATION CHART

For component information, refer to Mechanical Components and Functions .

Scheme 35

Hydraulic Operation - Line pressure hydraulic circuits

1. Line pressure from the pump is supplied to the manual valve.
2. Line pressure is regulated by the pressure regulator valve.
3. The pressure regulator valve is controlled by varying pressure from the LPC solenoid through the LPC circuit.

Torque converter circuits

1. Regulated line pressure from the pressure regulator valve is directed to the TCC control valve through the CONV FD hydraulic circuit.
2. 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.
3. Transmission fluid from the TCC RELEASE returns to the TCC control valve through the TCC APPLY circuit.

Cooler and lubrication hydraulic circuits

1. The TCC control valve directs transmission fluid from the TCC APPLY circuit (return circuit from the torque converter when the TCC is released) to the COOLER FEED circuit.
2. In the COOLER FEED circuit, transmission fluid flows through the transmission fluid cooler or the thermal bypass valve to the LUBE circuit.

Solenoid hydraulic circuits

1. The LPC solenoid applies varying pressure to the pressure control valve through the LPC hydraulic circuit. The LPC solenoid regulates line pressure by controlling the position of the pressure regulator valve.
2. SSA applies pressure to the forward (1, 2, 3, 4) clutch regulator valve to apply the forward clutch.
3. SSB applies pressure to the direct (3, 5, R) clutch regulator valve to apply the direct clutch.

Clutch hydraulic circuits

1. Line pressure from the manual valve is directed to the multiplex shift valve through the DRIVE 1 hydraulic circuit.
2. The multiplex shift valve directs DRIVE 1 pressure to the forward (1, 2, 3, 4) clutch regulator valve through the DRIVE 2, CB26FD/CB1234FD and CB1234 SUP hydraulic circuits. The DRIVE 2 hydraulic circuit also feeds the C35R SUPPLY hydraulic circuit which supplies the direct (3, 5, R) clutch regulator valve with pressure.
3. The low/reverse/overdrive (4, 5, 6) clutch regulator valve directs DRIVE 2 pressure to the multiplex shift valve through the VALVE LATCH hydraulic circuit to latch the multiplex shift valve.
4. Regulated CB1234 SUP pressure from the forward (1, 2, 3, 4) clutch regulator valve is directed to the forward (1, 2, 3, 4) clutch through the CB1234 hydraulic circuit to apply the clutch.
5. Regulated C35R SUPPLY pressure from the direct (3, 5, R) clutch regulator valve is directed to the direct (3, 5, R) clutch through the C35R hydraulic circuit to apply the clutch.

For additional hydraulic circuit and information, refer to Hydraulic Circuits .

Electrical Operation - Solenoid operation

3RD GEAR (TCC RELEASED) SOLENOID OPERATION CHART

Scheme 36

Scheme 37

4th Gear Torque Converter Clutch (TCC) Released

Mechanical Operation - Apply components

1. Forward (1, 2, 3, 4) clutch
2. Overdrive (O/D) (4, 5, 6) clutch

Planetary Gearset Operation - Front planetary gearset driven components

1. Planetary carrier
2. Ring gear

Center planetary gearset driven components

1. Sun gear
2. Planetary carrier
3. Ring gear

Rear planetary gearset driven components

1. Planetary carrier

Front planetary gearset held components

1. Sun gear

Center planetary gearset held components

1. None

Rear planetary gearset held components

1. None

4TH GEAR CLUTCH APPLICATION CHART

For component information, refer to Mechanical Components and Functions .

Scheme 38

Hydraulic Operation - Line pressure hydraulic circuits

1. Line pressure from the pump is supplied to the manual valve.
2. Line pressure is regulated by the pressure regulator valve.
3. The pressure regulator valve is controlled by varying pressure from the LPC solenoid through the LPC circuit.

Torque converter circuits

1. Regulated line pressure from the pressure regulator valve is directed to the TCC control valve through the CONV FD hydraulic circuit.
2. 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.
3. Transmission fluid from the TCC RELEASE returns to the TCC control valve through the TCC APPLY circuit.

Cooler and lubrication hydraulic circuits

1. The TCC control valve directs transmission fluid from the TCC APPLY circuit (return circuit from the torque converter when the TCC is released) to the COOLER FEED circuit.
2. In the COOLER FEED circuit, transmission fluid flows through the transmission fluid cooler or the thermal bypass valve to the LUBE circuit.

Solenoid hydraulic circuits

1. The LPC solenoid applies varying pressure to the pressure control valve through the LPC hydraulic circuit. The LPC solenoid regulates line pressure by controlling the position of the pressure regulator valve.
2. SSA applies pressure to the forward (1, 2, 3, 4) clutch regulator valve to apply the forward clutch.
3. SSD applies pressure to the low/reverse/overdrive (4, 5, 6) clutch regulator valve to apply the O/D clutch.

Clutch hydraulic circuits

1. Line pressure from the manual valve is directed to the multiplex shift valve through the DRIVE 1 hydraulic circuit.
2. The multiplex shift valve directs DRIVE 1 pressure to the forward (1, 2, 3, 4) clutch regulator valve through the DRIVE 2, CB26FD/CB1234FD and CB1234 SUP hydraulic circuits. The DRIVE 2 hydraulic circuit also feeds the CBLR/C456 clutch regulator valve.
3. Regulated CB1234 SUP pressure from the forward (1, 2, 3, 4) clutch regulator valve is directed to the forward (1, 2, 3, 4) clutch through the CB1234 hydraulic circuit to apply the clutch.
4. Line pressure from the pump is supplied to the low/reverse/overdrive (4, 5, 6) regulator valve.
5. Regulated line pressure from the low/reverse/overdrive (4, 5, 6) regulator valve is sent to the multiplex shift valve assembly through the CBLR/C456 SUPPLY hydraulic circuit.
6. The multiplex shift valve directs the transmission fluid to the multiplex manual valve through the C456 SUPPLY hydraulic circuit.
7. The multiplex manual valve directs pressure from the C456 SUPPLY circuit to the O/D (4, 5, 6) clutch through the C456 hydraulic circuit to apply the clutch.
8. The C456 hydraulic circuit supplies pressure to the VALVE LATCH circuit to latch the multiplex shift valve and also supplies pressure to the intermediate (2, 6) clutch regulator valve.

For additional hydraulic circuit and information, refer to Hydraulic Circuits .

Electrical Operation - Solenoid operation

4TH GEAR (TCC RELEASED) SOLENOID OPERATION CHART

Scheme 39

Scheme 40

4th Gear Torque Converter Clutch (TCC) Applied

Mechanical Operation - Apply components

1. Forward (1, 2, 3, 4) clutch
2. O/D (4, 5, 6) clutch
3. TCC

Planetary Gearset Operation - Front planetary gearset driven components

1. Planetary carrier
2. Ring gear

Center planetary gearset driven components

1. Sun gear
2. Planetary carrier
3. Ring gear

Rear planetary gearset driven components

1. Planetary carrier

Front planetary gearset held components

1. Sun gear

Center planetary gearset held components

1. None

Rear planetary gearset held components

1. None

4TH GEAR TCC APPLIED CLUTCH APPLICATION CHART

For component information, refer to Mechanical Components and Functions .

Scheme 41

Hydraulic Operation - Line pressure hydraulic circuits

1. Line pressure from the pump is supplied to the manual valve.
2. Line pressure is regulated by the pressure regulator valve.
3. The pressure regulator valve is controlled by varying pressure from the LPC solenoid through the LPC circuit.

Torque converter circuits

1. Line pressure from the manual valve is directed to the multiplex shift valve through the DRIVE 1 hydraulic circuit.
2. The multiplex shift valve directs DRIVE 1 pressure to the TCC regulator apply valve through the DRIVE 2 hydraulic circuit.
3. When the TCC is applied, the TCC regulator apply valve directs regulated DRIVE 2 pressure to the TCC control valve through the REG APPLY hydraulic circuit. The TCC control valve directs DRIVE 2 pressure to the TCC APPLY hydraulic circuit to apply the TCC.
4. Transmission fluid from the TCC APPLY circuit returns to the TCC control valve unpressurized through the TCC RELEASE circuit and returns to the sump through the EXH port.

Cooler and lubrication hydraulic circuits

1. Regulated line pressure from the pressure regulator valve is directed to the TCC control valve through the CONV FD hydraulic circuit.
2. The TCC control valve directs transmission fluid from the CONV FD circuit to the COOLER FEED circuit.
3. In the COOLER FEED circuit, transmission fluid flows through the transmission fluid cooler or the thermal bypass valve to the LUBE circuit.

Solenoid hydraulic circuits

1. The LPC solenoid applies varying pressure to the pressure control valve through the LPC hydraulic circuit. The LPC solenoid regulates line pressure by controlling the position of the pressure regulator valve.
2. SSA applies pressure to the forward (1, 2, 3, 4) clutch regulator valve to apply the forward clutch.
3. SSD applies pressure to the low/reverse/overdrive (4, 5, 6) clutch regulator valve to apply the Overdrive (O/D) clutch.
4. The TCC solenoid applies pressure to the TCC control valve and the TCC regulator apply valve to apply the TCC.

Clutch hydraulic circuits

1. Line pressure from the manual valve is directed to the multiplex shift valve through the DRIVE 1 hydraulic circuit.
2. The multiplex shift valve directs DRIVE 1 pressure to the forward (1, 2, 3, 4) clutch regulator valve through the DRIVE 2, CB26FD/CB1234FD and CB1234 SUP hydraulic circuits. The DRIVE 2 hydraulic circuit also feeds the CBLR/C456 clutch regulator valve.
3. Regulated CB1234 SUP pressure from the forward (1, 2, 3, 4) clutch regulator valve is directed to the forward (1, 2, 3, 4) clutch through the CB1234 hydraulic circuit to apply the clutch.
4. Line pressure from the pump is supplied to the low/reverse/overdrive (4, 5, 6) regulator valve.
5. Regulated line pressure from the low/reverse/overdrive (4, 5, 6) regulator valve is sent to the multiplex shift valve assembly through the CBLR/C456 SUPPLY hydraulic circuit.
6. The multiplex shift valve directs the fluid to the multiplex manual valve through the C456 SUPPLY hydraulic circuit.
7. The multiplex manual valve directs pressure from the C456 SUPPLY circuit to the Overdrive (O/D) (4, 5, 6) clutch through the C456 hydraulic circuit to apply the clutch.
8. The C456 hydraulic circuit supplies pressure to the VALVE LATCH circuit to latch the multiplex shift valve and also supplies pressure to the intermediate (2, 6) clutch regulator valve.

For additional hydraulic circuit and information, refer to Hydraulic Circuits .

Electrical Operation - Solenoid operation

4TH GEAR (TCC APPLIED) SOLENOID OPERATION CHART

Scheme 42

Scheme 43

5th Gear Torque Converter Clutch (TCC) Released

Mechanical Operation - Apply components

1. O/D (4, 5, 6) clutch
2. Direct (3, 5, R) clutch

Planetary Gearset Operation - Front planetary gearset driven components

1. Planetary carrier

Center planetary gearset driven components

1. Sun gear (does not contribute to power flow)

Rear planetary gearset driven components

1. Sun gear
2. Planetary carrier
3. Ring gear

Front planetary gearset held components

1. None

Center planetary gearset held components

1. None

Rear planetary gearset held components

1. None

5TH GEAR CLUTCH APPLICATION CHART

For component information, refer to Mechanical Components and Functions .

Scheme 44

Hydraulic Operation - Line pressure hydraulic circuits

1. Line pressure from the pump is supplied to the manual valve.
2. Line pressure is regulated by the pressure regulator valve.
3. The pressure regulator valve is controlled by varying pressure from the LPC solenoid through the LPC circuit.

Torque converter circuits

1. Regulated line pressure from the pressure regulator valve is directed to the TCC control valve through the CONV FD hydraulic circuit.
2. 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.
3. Transmission fluid from the TCC RELEASE returns to the TCC control valve through the TCC APPLY circuit.

Cooler and lubrication hydraulic circuits

1. The TCC control valve directs transmission fluid from the TCC APPLY circuit (return circuit from the torque converter when the TCC is released) to the COOLER FEED circuit.
2. In the COOLER FEED circuit, transmission fluid flows through the transmission fluid cooler or the thermal bypass valve to the LUBE circuit.

Solenoid hydraulic circuits

1. The LPC solenoid applies varying pressure to the pressure control valve through the LPC hydraulic circuit. The LPC solenoid regulates line pressure by controlling the position of the pressure regulator valve.
2. SSB applies pressure to the direct (3, 5, R) clutch regulator valve to apply the direct clutch.
3. SSD applies pressure to the low/reverse/overdrive (4, 5, 6) clutch regulator valve to apply the O/D clutch.

Clutch hydraulic circuits

1. Line pressure from the manual valve is directed to the multiplex shift valve through the DRIVE 1 hydraulic circuit.
2. The multiplex shift valve directs DRIVE 1 pressure to the C35R clutch regulator valve through the DRIVE 2 and C35R SUPPLY hydraulic circuits.
3. Line pressure from the pump is supplied to the low/reverse/overdrive (4, 5, 6) regulator valve.
4. Regulated line pressure from the low/reverse/overdrive (4, 5, 6) regulator valve is sent to the multiplex shift valve assembly through the CBLR/C456 SUPPLY hydraulic circuit.
5. The multiplex shift valve directs the CBLR/C456 SUPPLY transmission fluid to the multiplex manual valve through the C456 SUPPLY hydraulic circuit.
6. The multiplex manual valve directs pressure from the C456 SUPPLY circuit to the Overdrive (O/D) (4, 5, 6) clutch through the C456 hydraulic circuit to apply the clutch.
7. The C456 hydraulic circuit supplies pressure to the VALVE LATCH circuit to latch the multiplex shift valve and also supplies pressure to the intermediate (2, 6) clutch regulator valve.
8. Regulated C35R SUPPLY pressure from the direct (3, 5, R) clutch regulator valve is directed to the direct (3, 5, R) clutch through the C35R hydraulic circuit to apply the clutch.

For additional hydraulic circuit and information, refer to Hydraulic Circuits .

Electrical Operation - Solenoid operation

5TH GEAR TCC RELEASED SOLENOID OPERATION CHART

Scheme 45

Scheme 46

5th Gear Torque Converter Clutch (TCC) Applied

Mechanical Operation - Apply components

1. O/D (4, 5, 6) clutch
2. Direct (3, 5, R) clutch
3. TCC

Planetary Gearset Operation - Front planetary gearset driven components

1. Planetary carrier

Center planetary gearset driven components

1. Sun gear (does not contribute to power flow)

Rear planetary gearset driven components

1. Sun gear
2. Planetary carrier
3. Ring gear

Front planetary gearset held components

1. None

Center planetary gearset held components

1. None

Rear planetary gearset held components

1. None

5TH GEAR TCC APPLIED CLUTCH APPLICATION CHART

For component information, refer to Mechanical Components and Functions .

Scheme 47

Hydraulic Operation - Line pressure hydraulic circuits

1. Line pressure from the pump is supplied to the manual valve.
2. Line pressure is regulated by the pressure regulator valve.
3. The pressure regulator valve is controlled by varying pressure from the LPC solenoid through the LPC circuit.

Torque converter circuits

1. Line pressure from the manual valve is directed to the multiplex shift valve through the DRIVE 1 hydraulic circuit.
2. The multiplex shift valve directs DRIVE 1 pressure to the TCC regulator apply valve through the DRIVE 2 hydraulic circuit.
3. When the TCC is applied, the TCC regulator apply valve directs regulated DRIVE 2 pressure to the TCC control valve through the REG APPLY hydraulic circuit. The TCC control valve directs DRIVE 2 pressure to the TCC APPLY hydraulic circuit to apply the TCC.
4. Transmission fluid from the TCC APPLY circuit returns to the TCC control valve unpressurized through the TCC RELEASE circuit and returns to the sump through the EXH port.

Cooler and lubrication hydraulic circuits

1. Regulated line pressure from the pressure regulator valve is directed to the TCC control valve through the CONV FD hydraulic circuit.
2. The TCC control valve directs transmission fluid from the CONV FD circuit to the COOLER FEED circuit.
3. In the COOLER FEED circuit, transmission fluid flows through the transmission fluid cooler or the thermal bypass valve to the LUBE circuit.

Solenoid hydraulic circuits

1. The LPC solenoid applies varying pressure to the pressure control valve through the LPC hydraulic circuit. The LPC solenoid regulates line pressure by controlling the position of the pressure regulator valve.
2. SSB applies pressure to the direct (3, 5, R) clutch regulator valve to apply the direct clutch.
3. SSD applies pressure to the low/reverse/overdrive (4, 5, 6) clutch regulator valve to apply the O/D clutch.
4. The TCC solenoid applies pressure to the TCC control valve and the TCC regulator apply valve to apply the TCC.

Clutch hydraulic circuits

1. Line pressure from the manual valve is directed to the multiplex shift valve through the DRIVE 1 hydraulic circuit.
2. The multiplex shift valve directs DRIVE 1 pressure to the C35R clutch regulator valve through the DRIVE 2 and C35R SUPPLY hydraulic circuits.
3. Line pressure from the pump is supplied to the low/reverse/overdrive (4, 5, 6) regulator valve.
4. Regulated line pressure from the low/reverse/overdrive (4, 5, 6) regulator valve is sent to the multiplex shift valve assembly through the CBLR/C456 SUPPLY hydraulic circuit.
5. The multiplex shift valve directs the CBLR/C456 SUPPLY transmission fluid to the multiplex manual valve through the C456 SUPPLY hydraulic circuit.
6. The multiplex manual valve directs pressure from the C456 SUPPLY circuit to the O/D (4, 5, 6) clutch through the C456 hydraulic circuit to apply the clutch.
7. The C456 hydraulic circuit supplies pressure to the VALVE LATCH circuit to latch the multiplex shift valve and also supplies pressure to the intermediate (2, 6) clutch regulator valve.
8. Regulated C35R SUPPLY pressure from the direct (3, 5, R) clutch regulator valve is directed to the direct (3, 5, R) clutch through the C35R hydraulic circuit to apply the clutch.

For additional hydraulic circuit and information, refer to Hydraulic Circuits .

Electrical Operation - Solenoid operation

5TH GEAR TCC APPLIED SOLENOID OPERATION CHART

Scheme 48

Scheme 49

6th Gear Torque Converter Clutch (TCC) Released

Mechanical Operation - Apply components

1. O/D (4, 5, 6) clutch
2. Intermediate (2, 6) clutch

Planetary Gearset Operation - Front planetary gearset driven components

1. Planetary carrier

Center planetary gearset driven components

1. Sun gear (does not contribute to power flow)
2. Ring gear (does not contribute to power flow)

Rear planetary gearset driven components

1. Planetary carrier
2. Ring gear

Front planetary gearset held components

1. None

Center planetary gearset held components

1. None

Rear planetary gearset held components

1. Sun gear

6TH GEAR CLUTCH APPLICATION CHART

For component information, refer to Mechanical Components and Functions .

Scheme 50

Hydraulic Operation - Line pressure hydraulic circuits

1. Line pressure from the pump is supplied to the manual valve.
2. Line pressure is regulated by the pressure regulator valve.
3. The pressure regulator valve is controlled by varying pressure from the LPC solenoid through the LPC circuit.

Torque converter circuits

1. Regulated line pressure from the pressure regulator valve is directed to the TCC control valve through the CONV FD hydraulic circuit.
2. 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.
3. Transmission fluid from the TCC RELEASE returns to the TCC control valve through the TCC APPLY circuit.

Cooler and lubrication hydraulic circuits

1. The TCC control valve directs transmission fluid from the TCC APPLY circuit (return circuit from the torque converter when the TCC is released) to the COOLER FEED circuit.
2. In the COOLER FEED circuit, transmission fluid flows through the transmission fluid cooler or the thermal bypass valve to the LUBE circuit.

Solenoid hydraulic circuits

1. The LPC solenoid applies varying pressure to the pressure control valve through the LPC hydraulic circuit. The LPC solenoid regulates line pressure by controlling the position of the pressure regulator valve.
2. SSC applies pressure to the intermediate (2, 6) clutch regulator valve to apply the direct (2, 6) clutch.
3. SSD applies pressure to the low/reverse/overdrive (4, 5, 6) clutch regulator valve to apply the O/D clutch.

Clutch hydraulic circuits

1. Line pressure from the manual valve is directed to the multiplex shift valve through the DRIVE 1 hydraulic circuit.
2. The multiplex shift valve directs DRIVE 1 pressure to the intermediate (2, 6) clutch regulator valve through the DRIVE 2 and CB26FD/CB1234FD hydraulic circuits.
3. Line pressure from the pump is supplied to the low/reverse/overdrive (4, 5, 6) regulator valve.
4. Regulated line pressure from the low/reverse/overdrive (4, 5, 6) regulator valve is sent to the multiplex shift valve assembly through the CBLR/C456 SUPPLY hydraulic circuit.
5. The multiplex shift valve directs the CBLR/C456 SUPPLY transmission fluid to the multiplex manual valve through the C456 SUPPLY hydraulic circuit.
6. The multiplex manual valve directs pressure from the C456 SUPPLY circuit to the O/D (4, 5, 6) clutch through the C456 hydraulic circuit to apply the clutch.
7. The C456 hydraulic circuit supplies pressure to the VALVE LATCH circuit to latch the multiplex shift valve and also supplies pressure to the intermediate (2, 6) clutch regulator valve to boost the SSC SIG circuit.
8. Regulated CB26FD/CB1234FD pressure from the intermediate (2, 6) clutch regulator valve is directed to the intermediate (2, 6) clutch through the CB26 hydraulic circuit to apply the clutch.

For additional hydraulic circuit and information, refer to Hydraulic Circuits .

Electrical Operation - Solenoid operation

6TH GEAR TCC RELEASED SOLENOID OPERATION CHART

Scheme 51

Scheme 52

6th Gear Torque Converter Clutch (TCC) Applied

Mechanical Operation - Apply components

1. O/D (4, 5, 6) clutch
2. Intermediate (2, 6) clutch
3. TCC

Planetary Gearset Operation - Front planetary gearset driven components

1. Planetary carrier

Center planetary gearset driven components

1. Sun gear (does not contribute to power flow)
2. Ring gear (does not contribute to power flow)

Rear planetary gearset driven components

1. Planetary carrier
2. Ring gear

Front planetary gearset held components

1. None

Center planetary gearset held components

1. None

Rear planetary gearset held components

1. Sun gear

6TH GEAR TCC APPLIED CLUTCH APPLICATION CHART

For component information, refer to Mechanical Components and Functions .

Scheme 53

Hydraulic Operation - Line pressure hydraulic circuits

1. Line pressure from the pump is supplied to the manual valve.
2. Line pressure is regulated by the pressure regulator valve.
3. The pressure regulator valve is controlled by varying pressure from the LPC solenoid through the LPC circuit.

Torque converter circuits

1. Line pressure from the manual valve is directed to the multiplex shift valve through the DRIVE 1 hydraulic circuit.
2. The multiplex shift valve directs DRIVE 1 pressure to the TCC regulator apply valve through the DRIVE 2 hydraulic circuit.
3. When the TCC is applied, the TCC regulator apply valve directs regulated DRIVE 2 pressure to the TCC control valve through the REG APPLY hydraulic circuit. The TCC control valve directs DRIVE 2 pressure to the TCC APPLY hydraulic circuit to apply the TCC.
4. Transmission fluid from the TCC APPLY circuit returns to the TCC control valve unpressurized through the TCC RELEASE circuit and returns to the sump through the EXH port.

Cooler and lubrication hydraulic circuits

1. Regulated line pressure from the pressure regulator valve is directed to the TCC control valve through the CONV FD hydraulic circuit.
2. The TCC control valve directs transmission fluid from the CONV FD circuit to the COOLER FEED circuit.
3. In the COOLER FEED circuit, transmission fluid flows through the transmission fluid cooler or the thermal bypass valve to the LUBE circuit.

Solenoid hydraulic circuits

1. The LPC solenoid applies varying pressure to the pressure control valve through the LPC hydraulic circuit. The LPC solenoid regulates line pressure by controlling the position of the pressure regulator valve.
2. SSC applies pressure to the intermediate (2, 6) clutch regulator valve to apply the direct (2, 6) clutch.
3. SSD applies pressure to the low/reverse/overdrive (4, 5, 6) clutch regulator valve to apply the O/D clutch.
4. The TCC solenoid applies pressure to the TCC control valve and the TCC regulator apply valve to apply the TCC.

Clutch hydraulic circuits

1. Line pressure from the manual valve is directed to the multiplex shift valve through the DRIVE 1 hydraulic circuit.
2. The multiplex shift valve directs DRIVE 1 pressure to the intermediate (2, 6) clutch regulator valve through the DRIVE 2 and CB26FD/CB1234FD hydraulic circuits.
3. Line pressure from the pump is supplied to the low/reverse/overdrive (4, 5, 6) regulator valve.
4. Regulated line pressure from the low/reverse/overdrive (4, 5, 6) regulator valve is sent to the multiplex shift valve assembly through the CBLR/C456 SUPPLY hydraulic circuit.
5. The multiplex shift valve directs the CBLR/C456 SUPPLY transmission fluid to the multiplex manual valve through the C456 SUPPLY hydraulic circuit.
6. The multiplex manual valve directs pressure from the C456 SUPPLY circuit to the O/D (4, 5, 6) clutch through the C456 hydraulic circuit to apply the clutch.
7. The C456 hydraulic circuit supplies pressure to the VALVE LATCH circuit to latch the multiplex shift valve and also supplies pressure to the intermediate (2, 6) clutch regulator valve to boost the SSC SIG circuit.
8. Regulated CB26FD/CB1234FD pressure from the intermediate (2, 6) clutch regulator valve is directed to the intermediate (2, 6) clutch through the CB26 hydraulic circuit to apply the clutch.

For additional hydraulic circuit and information, refer to Hydraulic Circuits .

Electrical Operation - Solenoid operation

6TH GEAR TCC APPLIED SOLENOID OPERATION CHART

Scheme 54

Scheme 55