SECTION 307-01: Automatic Transaxle/Transmission — 6R80
2014 Mustang Workshop Manual
DESCRIPTION AND OPERATION
Procedure revision date: 01/07/2013

Transmission Operation

 

Transmission Operation Overview

Transmission operation is controlled by the PCM.

Torque Converter

This transmission uses a torque converter with the following elements:

For component information, refer to Torque Converter in this section.

Planetary Gearsets

Operation of this transmission involves the use of 2 planetary gearsets that have the following components:

Apply Clutches

This transmission uses the following clutches to operate the 2 planetary gearsets:

For information about planetary gearsets or the apply clutches, refer to Mechanical Components and Functions in this section.

Hydraulic System

The hydraulic operation of this transmission includes the following components:

For component information, refer to Hydraulic System in this section.

Electronic Operation

The PCM controls the operation of this transmission with the following solenoids:

For solenoid information, refer to Transmission Electronic Control System in this section.

 

Park Position

Mechanical Operation

Apply components:

Planetary Gearset Operation

Front planetary gearset driving components:

Front planetary gearset driven components:

Front planetary gearset held components:

Rear planetary gearset driving components:

Rear planetary gearset driven components:

Rear planetary gearset held components:



 Park Position Clutch Application Chart

Gear Forward A (1,2,3,4) Direct B (3,5,R) Inter-mediate C (2,6) Low/ Reverse D (1,R) Overdrive E (4,5,6) Low-OWC
Park       H    
Planetary Components Front planetary carrier-to-No. 3 sun gear Front carrier-to-No. 2 sun gear No. 2 sun gear Rear planetary carrier Input shaft-to-rear planetary carrier Rear planetary carrier

For component information, refer to Mechanical Components and Functions in this section.

Park Position Power Flow
Hydraulic Operation

Line pressure hydraulic circuits:

Torque converter circuits:

Cooler and lubrication hydraulic circuits:

Solenoid hydraulic circuits:

Clutch hydraulic circuits:

For hydraulic circuit information, refer to Hydraulic Circuits in this section.

Electrical Operation

Solenoid operation:



 Park Position Solenoid Operation Chart

Selector Lever Position PCM Commanded Gear Shift Solenoid TCC NL
SSA NL (1,2,3,4) SSB NH (3,5,R) SSC NL (CB 2,6) SSD NH (CB L/R 4,5,6) SSE NC
P P Off On Off On On Off

CB = Clutch brake

NC = Normally closed

NH = Normally high

NL = Normally low


For solenoid information, refer to Transmission Electronic Control System in this section.

 Printable / zoomable view of this graphic

 

Reverse Position

Mechanical Operation

Apply components:

Planetary Gearset Operation

Front planetary gearset driving components:

Front planetary gearset driven components:

Front planetary gearset held components:

Rear planetary gearset driving components:

Rear planetary gearset driven components:

Rear planetary gearset held components:



 Reverse Position Clutch Application Chart

Gear Forward A (1,2,3,4) Direct B (3,5,R) Inter-mediate C (2,6) Low/ Reverse D (1,R) Overdrive E (4,5,6) Low-OWC
Reverse   D   H    
Planetary Components Front planetary carrier-to-No. 3 sun gear Front carrier-to-No. 2 sun gear No. 2 sun gear Rear planetary carrier Input shaft-to-rear planetary carrier Rear planetary carrier

For component information, refer to Mechanical Components and Functions in this section.

Reverse Position Power Flow
Hydraulic Operation

Line pressure hydraulic circuits:

Torque converter circuits:

Cooler and lubrication hydraulic circuits:

Solenoid hydraulic circuits:

Clutch hydraulic circuits:

For hydraulic circuit information, refer to Hydraulic Circuits in this section.

Electrical Operation

Solenoid operation:



 Reverse Position Solenoid Operation Chart

Selector Lever Position PCM Commanded Gear Shift Solenoid TCC NL
SSA NL (1,2,3,4) SSB NH (3,5,R) SSC NL (CB 2,6) SSD NH (CB L/R 4,5,6) SSE NC
R R Off Off Off Off On Off

CB = Clutch brake

NC = Normally closed

NH = Normally high

NL = Normally low


For solenoid information, refer to Transmission Electronic Control System in this section.

 Printable / zoomable view of this graphic

 

Neutral Position

Mechanical Operation

Apply components:

Planetary Gearset Operation

Front planetary gearset driving components:

Front planetary gearset driven components:

Front planetary gearset held components:

Rear planetary gearset driving components:

Rear planetary gearset driven components:

Rear planetary gearset held components:



 Neutral Position Clutch Application Chart

Gear Forward A (1,2,3,4) Direct B (3,5,R) Inter-mediate C (2,6) Low/ Reverse D (1,R) Overdrive E (4,5,6) Low-OWC
Neutral       H    
Planetary Components Front planetary carrier-to-No. 3 sun gear Front carrier-to-No. 2 sun gear No. 2 sun gear Rear planetary carrier Input shaft-to-rear planetary carrier Rear planetary carrier

For component information, refer to Mechanical Components and Functions in this section.

Neutral Position Power Flow
Hydraulic Operation

Line pressure hydraulic circuits:

Torque converter circuits:

Cooler and lubrication hydraulic circuits:

Solenoid hydraulic circuits:

Clutch hydraulic circuits:

For hydraulic circuit information, refer to Hydraulic Circuits in this section.

Electrical Operation

Solenoid operation:



 Neutral Position Solenoid Operation Chart

Selector Lever Position PCM Commanded Gear Shift Solenoid TCC NL
SSA NL (1,2,3,4) SSB NH (3,5,R) SSC NL (CB 2,6) SSD NH (CB L/R 4,5,6) SSE NC
N N Off On Off On a On a Off
a Solenoid state changes if vehicle is moving forward with the selector lever in the NEUTRAL position.

CB = Clutch brake

NC = Normally closed

NH = Normally high

NL = Normally low


For solenoid information, refer to Transmission Electronic Control System in this section.

 Printable / zoomable view of this graphic

 

1st Gear

Mechanical Operation

Apply components:

Planetary Gearset Operation

Front planetary gearset driving components:

Front planetary gearset driven components:

Front planetary gearset held components:

Rear planetary gearset driving components:

Rear planetary gearset driven components:

Rear planetary gearset held components:



 1st Gear Clutch Application Chart

Gear Forward A (1,2,3,4) Direct B (3,5,R) Inter-mediate C (2,6) Low/ Reverse D (1,R) Overdrive E (4,5,6) Low-OWC
1st Gear D D     H a   H
1st Gear Manual D     H   H
Planetary Components Front planetary carrier-to-No. 3 sun gear Front carrier-to-No. 2 sun gear No. 2 sun gear Rear planetary carrier Input shaft-to-rear planetary carrier Rear planetary carrier
a Clutch released when vehicle speed is above 3 mph.

For component information, refer to Mechanical Components and Functions in this section.

Power Flow
Hydraulic Operation

Line pressure hydraulic circuits:

Torque converter circuits:

Cooler and lubrication hydraulic circuits:

Solenoid hydraulic circuits:

Clutch hydraulic circuits:

For hydraulic circuit information, refer to Hydraulic Circuits in this section.

Electrical Operation

Solenoid operation:



 1st Gear Solenoid Operation Chart

Selector Lever Position PCM Commanded Gear Shift Solenoid TCC NL
SSA NL (1,2,3,4) SSB NH (3,5,R) SSC NL (CB 2,6) SSD NH (CB L/R 4,5,6) SSE NC
D 1 On On Off Off b On Off
1 1 On On Off Off On Off
b Solenoid is On when vehicle is above 3 mph.

CB = Clutch brake

NC = Normally closed

NH = Normally high

NL = Normally low


For solenoid information, refer to Transmission Electronic Control System in this section.

 Printable / zoomable view of this graphic

 

2nd Gear

Mechanical Operation

Apply components:

  • Forward clutch (A) applied
  • Intermediate clutch (C) applied
Planetary Gearset Operation

Front planetary gearset driving components:

  • Ring gear (input shaft)

Front planetary gearset driven components:

  • Planetary carrier

Front planetary gearset held components:

  • Sun gear (splined to pump assembly)

Rear planetary gearset driving components:

  • No. 3 sun gear

Rear planetary gearset driven components:

  • Planetary carrier
  • Ring gear (output shaft)

Rear planetary gearset held components:

  • No. 2 sun gear


 2nd Gear Clutch Application Chart

Gear Forward A (1,2,3,4) Direct B (3,5,R) Inter-mediate C (2,6) Low/ Reverse D (1,R) Overdrive E (4,5,6) Low-OWC
2nd Gear D and Manual 2 D   H     O/R
Planetary Components Front planetary carrier-to-No. 3 sun gear Front carrier-to-No. 2 sun gear No. 2 sun gear Rear planetary carrier Input shaft-to-rear planetary carrier Rear planetary carrier
  • D = Drive Clutch
  • H = Hold Clutch
  • O/R = Overrunning

For component information, refer to Mechanical Components and Functions in this section.

Power Flow
Hydraulic Operation

Line pressure hydraulic circuits:

  • The position of the main regulator valve controls line pressure. The position of the main regulator valve is dependent on the pressure applied to it by the LPC solenoid through the VFS5 circuit.
  • The main regulator valve varies pressure in the PUMP circuit by controlling hydraulic flow from the SCHG circuit into the pump suction circuit.
  • Line pressure is supplied to the:
    • manual valve.
    • lubrication control valve.
    • converter release regulator valve.
    • bypass clutch control regulator valve.
    • solenoid pressure regulator valve.
    • D1 latch and regulator valves.
  • In drive, the manual valve directs line pressure to the No. 1 shuttle valve and clutch A, C and E regulator valves.
  • The No. 1 shuttle ball directs line pressure to the clutch B regulator valve.

Torque converter circuits:

  • When the TCC is released, the converter release regulator valve applies pressure to the torque converter through the CREL circuit to release the TCC .
  • CREL pressure exits the torque converter through the CAPLY circuit to the bypass clutch control regulator valve.
  • The bypass clutch control regulator valve directs the pressure from the CAPLY circuit back to the converter release regulator valve through the CAPLY EX circuit.
  • The converter release regulator valve directs the pressure from the CAPLY EX circuit to the drain back valve through the DBACK circuit.

Cooler and lubrication hydraulic circuits:

  • The lubrication control valve directs line pressure to the transmission fluid cooler or the thermal bypass valve through the COOLF circuit.
  • When the transmission fluid exits the transmission fluid cooler or thermal bypass valve, it provides lubrication to the transmission through the LUBE circuit. For information about transmission lubrication, refer to Mechanical Components and Functions in this section.

Solenoid hydraulic circuits:

  • The solenoid pressure regulator valve supplies regulated line pressure to the shift, LPC and TCC solenoid through the SREG hydraulic circuit.
  • The LPC solenoid applies varying pressure to the main regulator valve through the VFS5 hydraulic circuit. The LPC solenoid regulates line pressure by controlling the position of the main regulator valve.
  • SSA supplies pressure to the clutch A regulator and latch valves to position the valves for forward clutch (A) application.
  • SSC supplies pressure to the clutch C regulator valve to position the valve for intermediate clutch (C) application.

Clutch hydraulic circuits:

  • Regulated line pressure from the clutch A regulator valve is supplied to the forward clutch (A) to apply the clutch.
  • Regulated line pressure from the clutch C regulator valve is supplied to the intermediate clutch (C) to apply the clutch.

For hydraulic circuit information, refer to Hydraulic Circuits in this section.

Electrical Operation

Solenoid operation:



 2nd Gear Solenoid Operation Chart

Selector Lever Position PCM Commanded Gear Shift Solenoid TCC NL
SSA NL (1,2,3,4) SSB NH (3,5,R) SSC NL (CB 2,6) SSD NH (CB L/R 4,5,6) SSE NC
D and 2 2 On On On On Off Off

CB = Clutch brake

NC = Normally closed

NH = Normally high

NL = Normally low


For solenoid information, refer to Transmission Electronic Control System in this section.

 Printable / zoomable view of this graphic

 

3rd Gear

Mechanical Operation

Apply components:

  • Forward clutch (A) applied
  • Direct clutch (B) applied
Planetary Gearset Operation

Front planetary gearset driving components:

  • Ring gear (input shaft)

Front planetary gearset driven components:

  • Planetary carrier

Front planetary gearset held components:

  • Sun gear (splined to pump assembly)

Rear planetary gearset driving components:

  • No. 3 sun gear
  • No. 2 sun gear

Rear planetary gearset driven components:

  • Planetary carrier
  • Ring gear (output shaft)

Rear planetary gearset held components:

  • None


 3rd Gear Clutch Application Chart

Gear Forward A (1,2,3,4) Direct B (3,5,R) Inter-mediate C (2,6) Low/ Reverse D (1,R) Overdrive E (4,5,6) Low-OWC
3rd Gear D and Manual 3 D D       O/R
Planetary Components Front planetary carrier-to-No. 3 sun gear Front carrier-to-No. 2 sun gear No. 2 sun gear Rear planetary carrier Input shaft-to-rear planetary carrier Rear planetary carrier
  • D = Drive Clutch
  • O/R = Overrunning

For component information, refer to Mechanical Components and Functions in this section.

Power Flow
Hydraulic Operation

Line pressure hydraulic circuits:

  • The position of the main regulator valve controls line pressure. The position of the main regulator valve is dependent on the pressure applied to it by the LPC solenoid through the VFS5 circuit.
  • The main regulator valve varies pressure in the PUMP circuit by controlling hydraulic flow from the SCHG circuit into the pump suction circuit.
  • Line pressure is supplied to the:
    • manual valve.
    • lubrication control valve.
    • converter release regulator valve.
    • bypass clutch control regulator valve.
    • solenoid pressure regulator valve.
    • D1 latch and regulator valves.
  • In drive, the manual valve directs line pressure to the No. 1 shuttle valve and clutch A, C and E regulator valves.
  • The No. 1 shuttle ball directs line pressure to the clutch B regulator valve.

Torque converter circuits:

  • When the TCC is released, the converter release regulator valve applies pressure to the torque converter through the CREL circuit to release the TCC .
  • CREL pressure exits the torque converter through the CAPLY circuit to the bypass clutch control regulator valve.
  • The bypass clutch control regulator valve directs the pressure from the CAPLY circuit back to the converter release regulator valve through the CAPLY EX circuit.
  • The converter release regulator valve directs the pressure from the CAPLY EX circuit to the drain back valve through the DBACK circuit.

Cooler and lubrication hydraulic circuits:

  • The lubrication control valve directs line pressure to the transmission fluid cooler or the thermal bypass valve through the COOLF circuit.
  • When the transmission fluid exits the transmission fluid cooler or thermal bypass valve, it provides lubrication to the transmission through the LUBE circuit. For information about transmission lubrication, refer to Mechanical Components and Functions in this section.

Solenoid hydraulic circuits:

  • The solenoid pressure regulator valve supplies regulated line pressure to the shift, LPC and TCC solenoid through the SREG hydraulic circuit.
  • The LPC solenoid applies varying pressure to the main regulator valve through the VFS5 hydraulic circuit. The LPC solenoid regulates line pressure by controlling the position of the main regulator valve.
  • SSA supplies pressure to the clutch A regulator and latch valves to position the valves for forward clutch (A) application.
  • SSB supplies pressure to the clutch B regulator valve to position the valve for direct clutch (B) application.

Clutch hydraulic circuits:

  • Regulated line pressure from the clutch A regulator valve is supplied to the forward clutch (A) to apply the clutch.
  • Regulated line pressure from the clutch B regulator valve is supplied to the direct clutch (B) to apply the clutch.

For hydraulic circuit information, refer to Hydraulic Circuits in this section.

Electrical Operation

Solenoid operation:



 3rd Gear Solenoid Operation Chart

Selector Lever Position PCM Commanded Gear Shift Solenoid TCC NL
SSA NL (1,2,3,4) SSB NH (3,5,R) SSC NL (CB 2,6) SSD NH (CB L/R 4,5,6) SSE NC
D and 3 3 On Off Off On Off Off

CB = Clutch brake

NC = Normally closed

NH = Normally high

NL = Normally low


For solenoid information, refer to Transmission Electronic Control System in this section.

 Printable / zoomable view of this graphic

 

4th Gear

Mechanical Operation

Apply components:

  • Forward clutch (A) applied
  • Overdrive clutch (E) applied
Planetary Gearset Operation

Front planetary gearset driving components:

  • Ring gear (input shaft)

Front planetary gearset driven components:

  • Planetary carrier

Front planetary gearset held components:

  • Sun gear (splined to pump assembly)

Rear planetary gearset driving components:

  • No. 3 sun gear
  • Planetary carrier

Rear planetary gearset driven components:

  • Ring gear (output shaft)

Rear planetary gearset held components:

  • None


 4th Gear Clutch Application Chart

Gear Forward A (1,2,3,4) Direct B (3,5,R) Inter-mediate C (2,6) Low/ Reverse D (1,R) Overdrive E (4,5,6) Low-OWC
4th Gear D D       D O/R
Planetary Components Front planetary carrier-to-No. 3 sun gear Front carrier-to-No. 2 sun gear No. 2 sun gear Rear planetary carrier Input shaft-to-rear planetary carrier Rear planetary carrier
  • D = Drive Clutch
  • O/R = Overrunning

For component information, refer to Mechanical Components and Functions in this section.

Power Flow
Hydraulic Operation

Line pressure hydraulic circuits:

  • The position of the main regulator valve controls line pressure. The position of the main regulator valve is dependent on the pressure applied to it by the LPC solenoid through the VFS5 circuit.
  • The main regulator valve varies pressure in the PUMP circuit by controlling hydraulic flow from the SCHG circuit into the pump suction circuit.
  • Line pressure is supplied to the:
    • manual valve.
    • lubrication control valve.
    • converter release regulator valve.
    • bypass clutch control regulator valve.
    • solenoid pressure regulator valve.
    • D1 latch and regulator valves.
  • In drive, the manual valve directs line pressure to the No. 1 shuttle valve and clutch A, C and E regulator valves.
  • The No. 1 shuttle ball directs line pressure to the clutch B regulator valve.

Torque converter circuits:

  • When the TCC is released, the converter release regulator valve applies pressure to the torque converter through the CREL circuit to release the TCC .
  • CREL pressure exits the torque converter through the CAPLY circuit to the bypass clutch control regulator valve.
  • The bypass clutch control regulator valve directs the pressure from the CAPLY circuit back to the converter release regulator valve through the CAPLY EX circuit.
  • The converter release regulator valve directs the pressure from the CAPLY EX circuit to the drain back valve through the DBACK circuit.

Cooler and lubrication hydraulic circuits:

  • The lubrication control valve directs line pressure to the transmission fluid cooler or the thermal bypass valve through the COOLF circuit.
  • When the transmission fluid exits the transmission fluid cooler or thermal bypass valve, it provides lubrication to the transmission through the LUBE circuit. For information about transmission lubrication, refer to Mechanical Components and Functions in this section.

Solenoid hydraulic circuits:

  • The solenoid pressure regulator valve supplies regulated line pressure to the shift, LPC and TCC solenoid through the SREG hydraulic circuit.
  • The LPC applies varying pressure to the main regulator valve through the VFS5 hydraulic circuit. The LPC solenoid regulates line pressure by controlling the position of the main regulator valve.
  • SSA supplies pressure to the clutch A regulator and latch valves to position the valves for forward clutch (A) application.
  • SSD supplies pressure to the solenoid multiplex valve through the VFS4 circuit.
  • SSE supplies pressure to the solenoid multiplex valve and the drive enable valve through the SS1 circuit to move the valves.
  • The position of the solenoid multiplex valve and the drive enable valve allows pressure from the VFS4 circuit to be directed to the clutch E latch and regulator valves through the CLEC circuit to position the valves for overdrive clutch (E) application.

Clutch hydraulic circuits:

  • Regulated line pressure from the clutch A regulator valve is supplied to the forward clutch (A) to apply the clutch.
  • Regulated line pressure from the clutch E regulator valve is supplied to the overdrive clutch (E) to apply the clutch.

For hydraulic circuit information, refer to Hydraulic Circuits in this section.

Electrical Operation

Solenoid operation:



 4th Gear Solenoid Operation Chart

Selector Lever Position PCM Commanded Gear Shift Solenoid TCC NL
SSA NL (1,2,3,4) SSB NH (3,5,R) SSC NL (CB 2,6) SSD NH (CB L/R 4,5,6) SSE NC
D 4 On On Off Off Off On/Off

CB = Clutch brake

NC = Normally closed

NH = Normally high

NL = Normally low


For solenoid information, refer to Transmission Electronic Control System in this section.

 Printable / zoomable view of this graphic

 

5th Gear

Mechanical Operation

Apply components:

  • Overdrive clutch (E) applied
  • Direct clutch (B) applied
Planetary Gearset Operation

Front planetary gearset driving components:

  • Ring gear (input shaft)

Front planetary gearset driven components:

  • Planetary carrier

Front planetary gearset held components:

  • Sun gear (splined to pump assembly)

Rear planetary gearset driving components:

  • No. 2 sun gear
  • Planetary carrier

Rear planetary gearset driven components:

  • Ring gear (output shaft)

Rear planetary gearset held components:

  • None


 5th Gear Clutch Application Chart

Gear Forward A (1,2,3,4) Direct B (3,5,R) Inter-mediate C (2,6) Low/ Reverse D (1,R) Overdrive E (4,5,6) Low-OWC
5th Gear D   D     D O/R
Planetary Components Front planetary carrier-to-No. 3 sun gear Front carrier-to-No. 2 sun gear No. 2 sun gear Rear planetary carrier Input shaft-to-rear planetary carrier Rear planetary carrier
  • D = Drive Clutch
  • O/R = Overrunning

For component information, refer to Mechanical Components and Functions in this section.

Power Flow
Hydraulic Operation

Line pressure hydraulic circuits:

  • The position of the main regulator valve controls line pressure. The position of the main regulator valve is dependent on the pressure applied to it by the LPC solenoid through the VFS5 circuit.
  • The main regulator valve varies pressure in the PUMP circuit by controlling hydraulic flow from the SCHG circuit into the pump suction circuit.
  • Line pressure is supplied to the:
    • manual valve.
    • lubrication control valve.
    • converter release regulator valve.
    • bypass clutch control regulator valve.
    • solenoid pressure regulator valve.
    • D1 latch and regulator valves.
  • In drive, the manual valve directs line pressure to the No. 1 shuttle valve and clutch A, C and E regulator valves.
  • The No. 1 shuttle ball directs line pressure to the clutch B regulator valve.

Torque converter circuits:

  • When the TCC is released, the converter release regulator valve applies pressure to the torque converter through the CREL circuit to release the TCC .
  • CREL pressure exits the torque converter through the CAPLY circuit to the bypass clutch control regulator valve.
  • The bypass clutch control regulator valve directs the pressure from the CAPLY circuit back to the converter release regulator valve through the CAPLY EX circuit.
  • The converter release regulator valve directs the pressure from the CAPLY EX circuit to the drain back valve through the DBACK circuit.

Cooler and lubrication hydraulic circuits:

  • The lubrication control valve directs line pressure to the transmission fluid cooler or the thermal bypass valve through the COOLF circuit.
  • When the transmission fluid exits the transmission fluid cooler or thermal bypass valve, it provides lubrication to the transmission through the LUBE circuit. For information about transmission lubrication, refer to Mechanical Components and Functions in this section.

Solenoid hydraulic circuits:

  • The solenoid pressure regulator valve supplies regulated line pressure to the shift, LPC and TCC solenoid through the SREG hydraulic circuit.
  • The PCA applies varying pressure to the main regulator valve through the VFS5 hydraulic circuit. LPC solenoid regulates line pressure by controlling the position of the main regulator valve.
  • SSB supplies pressure to the clutch B regulator valve to position the valve for direct clutch (B) application.
  • SSD supplies pressure to the solenoid multiplex valve through the VFS4 circuit.
  • SSE supplies pressure to the solenoid multiplex valve and the drive enable valve through the SS1 circuit to move the valves.
  • The position of the solenoid multiplex valve and the drive enable valve allows pressure from the VFS4 circuit to be directed to the clutch E latch and regulator valves through the CLEC circuit to position the valves for overdrive clutch (E) application.

Clutch hydraulic circuits:

  • Regulated line pressure from the clutch B regulator valve is supplied to the direct clutch (B) to apply the clutch.
  • Regulated line pressure from the clutch E regulator valve is supplied to the overdrive clutch (E) to apply the clutch.

For hydraulic circuit information, refer to Hydraulic Circuits in this section.

Electrical Operation

Solenoid operation:



 5th Gear Solenoid Operation Chart

Selector Lever Position PCM Commanded Gear Shift Solenoid TCC NL
SSA NL (1,2,3,4) SSB NH (3,5,R) SSC NL (CB 2,6) SSD NH (CB L/R 4,5,6) SSE NC
D 5 Off Off Off Off Off On/Off

CB = Clutch brake

NC = Normally closed

NH = Normally high

NL = Normally low


For solenoid information, refer to Transmission Electronic Control System in this section.

 Printable / zoomable view of this graphic

 

6th Gear Torque Converter Clutch (TCC) Applied

Mechanical Operation

Apply components:

  • Overdrive clutch (E) applied
  • Intermediate clutch (C) applied
Planetary Gearset Operation

Front planetary gearset driving components:

  • Ring gear (input shaft)

Front planetary gearset driven components:

  • Planetary carrier (does not contribute to power flow)

Front planetary gearset held components:

  • Sun gear (splined to pump assembly)

Rear planetary gearset driving components:

  • Planetary carrier

Rear planetary gearset driven components:

  • Ring gear (output shaft)

Rear planetary gearset held components:

  • No. 2 sun gear


 6th Gear Torque Converter Clutch (TCC) Applied Clutch Application Chart

Gear Forward A (1,2,3,4) Direct B (3,5,R) Inter-mediate C (2,6) Low/ Reverse D (1,R) Overdrive E (4,5,6) Low-OWC
6th Gear D     H   D O/R
Planetary Components Front planetary carrier-to-No. 3 sun gear Front carrier-to-No. 2 sun gear No. 2 sun gear Rear planetary carrier Input shaft-to-rear planetary carrier Rear planetary carrier
  • D = Drive Clutch
  • H = Hold Clutch
  • O/R = Overrunning

For component information, refer to Mechanical Components and Functions in this section.

Power Flow
Hydraulic Operation

Line pressure hydraulic circuits:

  • The position of the main regulator valve controls line pressure. The position of the main regulator valve is dependent on the pressure applied to it by the LPC solenoid through the VFS5 circuit.
  • The main regulator valve varies pressure in the PUMP circuit by controlling hydraulic flow from the SCHG circuit into the pump suction circuit.
  • Line pressure is supplied to the:
    • manual valve.
    • lubrication control valve.
    • converter release regulator valve.
    • bypass clutch control regulator valve.
    • solenoid pressure regulator valve.
    • D1 latch and regulator valves.
  • In drive, the manual valve directs line pressure to the No. 1 shuttle valve and clutch A, C and E regulator valves.
  • The No. 1 shuttle ball directs line pressure to the clutch B regulator valve.

Torque converter circuits:

  • When the TCC is applied, the bypass clutch control regulator valve applies pressure to the torque converter through the CAPLY circuit to apply the TCC .
  • CAPLY pressure exits the torque converter through the CREL circuit to the converter release regulator valve.

Cooler and lubrication hydraulic circuits:

  • The lubrication control valve directs line pressure to the transmission fluid cooler or the thermal bypass valve through the COOLF circuit.
  • When the transmission fluid exits the transmission fluid cooler or thermal bypass valve, it provides lubrication to the transmission through the LUBE circuit. For information about transmission lubrication, refer to Mechanical Components and Functions in this section.

Solenoid hydraulic circuits:

  • The solenoid pressure regulator valve supplies regulated line pressure to the shift, LPC and TCC solenoids through the SREG hydraulic circuit.
  • The LPC solenoid applies varying pressure to the main regulator valve through the VFS5 hydraulic circuit. The LPC solenoid regulates line pressure by controlling the position of the main regulator valve.
  • The TCC solenoid supplies pressure to the converter release regulator valve and the bypass clutch control regulator valve to move the position of the valves for TCC application.
  • SSC supplies pressure to the clutch C regulator valve to position the valve for intermediate clutch (C) application.
  • SSD supplies pressure to the solenoid multiplex valve through the VFS4 circuit.
  • SSE supplies pressure to the solenoid multiplex valve and the drive enable valve through the SS1 circuit to move the valves.
  • The position of the solenoid multiplex valve and the drive enable valve allows pressure from the VFS4 circuit to be directed to the clutch E latch and regulator valves through the CLEC circuit to position the valves for overdrive clutch (E) application.

Clutch hydraulic circuits:

  • Regulated line pressure from the clutch C regulator valve is supplied to the intermediate clutch (C) to apply the clutch.
  • Regulated line pressure from the clutch E regulator valve is supplied to the overdrive clutch (E) to apply the clutch.

For hydraulic circuit information, refer to Hydraulic Circuits in this section.

Electrical Operation

Solenoid operation:



 6th Gear Torque Converter Clutch (TCC) Applied Solenoid Operation Chart

Selector Lever Position PCM Commanded Gear Shift Solenoid TCC NL
SSA NL (1,2,3,4) SSB NH (3,5,R) SSC NL (CB 2,6) SSD NH (CB L/R 4,5,6) SSE NC
  6 Off On On Off Off On/Off

CB = Clutch brake

NC = Normally closed

NH = Normally high

NL = Normally low


For solenoid information, refer to Transmission Electronic Control System in this section.

 Printable / zoomable view of this graphic

 

3rd Gear Fail Safe

Mechanical Operation

Apply components:

  • Forward clutch (A) applied
  • Direct clutch (B) applied
Planetary Gearset Operation

Front planetary gearset driving components:

  • Ring gear (input shaft)

Front planetary gearset driven components:

  • Planetary carrier

Front planetary gearset held components:

  • Sun gear (splined to pump assembly)

Rear planetary gearset driving components:

  • No. 3 sun gear
  • No. 2 sun gear

Rear planetary gearset driven components:

  • Planetary carrier
  • Ring gear (output shaft)

Rear planetary gearset held components:

  • None


 3rd Gear Fail Safe Clutch Application Chart

Gear Forward A (1,2,3,4) Direct B (3,5,R) Inter-mediate C (2,6) Low/ Reverse D (1,R) Overdrive E (4,5,6) Low-OWC
3rd Gear D and Manual 3 D D       O/R
Planetary Components Front planetary carrier-to-No. 3 sun gear Front carrier-to-No. 2 sun gear No. 2 sun gear Rear planetary carrier Input shaft-to-rear planetary carrier Rear planetary carrier
  • D = Drive Clutch
  • O/R = Overrunning

For component information, refer to Mechanical Components and Functions in this section.

Power Flow
Hydraulic Operation

Line pressure hydraulic circuits:

  • The position of the main regulator valve controls line pressure. The position of the main regulator valve is dependent on the pressure applied to it by the LPC solenoid through the VFS5 circuit.
  • The main regulator valve varies pressure in the PUMP circuit by controlling hydraulic flow from the SCHG circuit into the pump suction circuit.
  • Line pressure is supplied to the:
    • manual valve.
    • lubrication control valve.
    • converter release regulator valve.
    • bypass clutch control regulator valve.
    • solenoid pressure regulator valve.
    • D1 latch and regulator valves.
  • In drive, the manual valve directs line pressure to the No. 1 shuttle valve and clutch A, C and E regulator valves.
  • The No. 1 shuttle ball directs line pressure to the clutch B regulator valve.

Torque converter circuits:

  • When the TCC is released, the converter release regulator valve applies pressure to the torque converter through the CREL circuit to release the TCC .
  • CREL pressure exits the torque converter through the CAPLY circuit to the bypass clutch control regulator valve.
  • The bypass clutch control regulator valve directs the pressure from the CAPLY circuit back to the converter release regulator valve through the CAPLY EX circuit.
  • The converter release regulator valve directs the pressure from the CAPLY EX circuit to the drain back valve through the DBACK circuit.

Cooler and lubrication hydraulic circuits:

  • The lubrication control valve directs line pressure to the transmission fluid cooler or the thermal bypass valve through the COOLF circuit.
  • When the transmission fluid exits the transmission fluid cooler or thermal bypass valve, it provides lubrication to the transmission through the LUBE circuit. For information about transmission lubrication, refer to Mechanical Components and Functions in this section.

Solenoid hydraulic circuits:

  • The solenoid pressure regulator valve supplies line pressure to the shift, LPC and TCC solenoid through the SREG hydraulic circuit.
  • The LPC solenoid applies full solenoid output pressure to the main regulator valve through the VFS5 hydraulic circuit. With full solenoid output pressure, the main regulator valve provides maximum line pressure during fail safe.
  • SSB supplies maximum solenoid output pressure to the clutch B regulator valve to position the valve for direct clutch (B) application.

Clutch hydraulic circuits:

  • Regulated line pressure from the clutch B regulator valve is supplied to the direct clutch (B) to, apply the clutch. Regulated line pressure from the clutch B regulator valve is also supplied to the clutch A latch valve from the clutch B latch valve through the BREV 5F circuit.
  • The clutch A latch valve directs the regulated line pressure to the drive enable valve through the BREV5 circuit.
  • The drive enable valve directs the BREV5 pressure to the BREVA circuit which supplies the clutch A regulator valve to position the valve to apply the forward clutch (A) with 81% of line pressure.

For hydraulic circuit information, refer to Hydraulic Circuits in this section.

Electrical Operation

Solenoid operation: In failsafe, voltage is removed from all solenoids and the solenoids default to their normal position. If a solenoid is a normally low (NL) solenoid, the solenoid will not supply pressure to the regulator valve, releasing the clutch that it controls. If a solenoid is a normally high (NH) solenoid, the solenoid will provide high pressure to the regulator valve, applying the clutch that it controls.



 3rd Gear Fail Safe Solenoid Operation Chart

Gear SSA NL (1,2,3,4) SSB NH (3,5,R) SSC NL (CB 2,6) SSD NH (CB L/R 4,5,6) SSE NC LPC NH TCC NL
3rd Gear — — — — — — —

CB = Clutch brake

NC = Normally closed

NH = Normally high

NL = Normally low


For solenoid information, refer to Transmission Electronic Control System in this section.

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