Toyota
Nissan Versa
 Sedan Service Manual
Transmission & driveline » Transaxle & transmission (TM)
Transaxle

Transaxle : cross-sectional view

Transaxle : cross-sectional view

1. Converter housing 2. Oil pump 3. Low clutch 4. Rear planetary gear 5. Low & reverse brake 6. Front planetary gear 7. Low one-way clutch 8. High clutch 9. Reverse clutch 10. 2-4 brake band (Brake band) 11. Band servo piston 12. Side cover 13. Output gear 14. Idler gear 15. Transaxle case 16. Reduction pinion gear 17. Final gear 18. Differential case 19. Input shaft 20. Torque converter

Transaxle : system diagram

Transaxle : system diagram

Transaxle : system description

DESCRIPTION

With the use of 2 sets of planetary gears, A/T enables 4-speed transmission for forward and 1-speed transmission for backward, depending on the combination of 3 sets of multiple-disc clutches, a set of multiple-disc brakes, a set of one-way clutches and a set of brake bands.

CLUTCH/BRAKE AND BAND CHART

CLUTCH/BRAKE AND BAND CHART

*: Operates during "progressive" acceleration.

P POSITION (PARKING MECHANISM)

When the selector lever is shifted to the "P" position, the parking pole engages with the parking gear (integrated with the idler gear), fixing the output shaft in place.

TRACTION TRANSMISSION OF EACH RANGE

"P" position, "N" position

TRACTION TRANSMISSION OF EACH RANGE

The drive force from the input shaft is not transmitted because all clutches and bands are released.

"1" position, "D1" position

TRACTION TRANSMISSION OF EACH RANGE

  • The drive force from the input shaft is transmitted via the engaged low clutch and turns the rear sun gear forwards.

    This causes the rear internal gear to turn backwards, however it is stopped by the one-way clutch.

    The rear gear turns forward and the force is transmitted to the output gear after being slowed down.

NOTE: When coasting, because the front carrier is able to turn forward, engine braking does not occur.

  • The status of each planetary gear is as shown below.  

"1" position, "D1" position, engine brake

TRACTION TRANSMISSION OF EACH RANGE

  • The drive force from the input shaft is transmitted via the engaged low clutch and turns the rear sun gear forwards.

    This causes the rear internal gear to turn backwards, however it is stopped by the one-way clutch.

    The rear carrier turns forward and the force is transmitted to the output gear after being slowed down.

  • The status of each planetary gear is as shown below. 

"2" position, "D2" position

TRACTION TRANSMISSION OF EACH RANGE

  • In 1st gear, the front sun gear is turning in reverse. However the 2-4 brake operates and fixes the front sun gear in place. When this happens, the front carrier turns in the forward direction. As a result, when the front internal gear transmits force to the output gear, it turns forward at a faster speed than when in 1st gear.
  • Because the rear internal gear and front carrier are turning forward, the one-way clutch turns freely.
  • The status of each planetary gear is as shown below.  

"D3" position

TRACTION TRANSMISSION OF EACH RANGE

  • The low clutch and high clutch that are connected to the input shaft are engaged, creating a single power transmitting mechanism and rotating while engaged.
  • The status of each planetary gear is as shown below.  

"D4" position

TRACTION TRANSMISSION OF EACH RANGE

  • The drive force input from the input shaft is transmitted by forward rotation of the engaged high clutch to the front carrier. Operation of the 2-4 brake fastens the front sun gear in place, causing the front carrier to turn forward. As a result, the front internal gear turns faster, the rear carrier turns forward, and force is transmitted to the output gear.
  • The status of each planetary gear is as shown below. 

"R" position

TRACTION TRANSMISSION OF EACH RANGE

  • The drive force from the input shaft is transmitted by forward rotation of the engaged reverse clutch to the front sun gear. Engagement of the low & reverse brake fastens the front carrier in place, causing the front internal gear to turn in reverse and transmitting force by reverse rotation to the output gear.
  • The status of each planetary gear is as shown below.  

Transaxle : component description

Name (abbreviation) FUNCTION
Torque converter Amplifies the drive force from the engine and transmits it to the transmission input shaft.
Oil pump Driven by the engine, this component supplies oil to the torque converter, control valve assembly, and lubricated parts.
4-point gear Transmits drive force from the transmission mechanism to the output gear, idler gear, reduction gear, and final gear.
Low clutch (L/C) Connects the rear sun gear and input shaft
High clutch (H/C) Connects the front carrier and input shaft
Reverse clutch (R/C) Connects the front sun gear and input shaft
Low & reverse brake (L&R/B) Fastens the rear internal gear and front carrier in place.
2-4 brake (2-4/B) Brake band that fastens the front sun gear in place.
One-way clutch (OWC) This clutch prevents reverse turning of the front carrier and rear internal gear. It operates not hydraulically but mechanically.
Planetary gear Transmits drive force to various positions by engagement and release of the clutches and bands.

Shift lock system

Shift lock system : system description

The selector lever cannot be shifted from "P" position to any other position unless the ignition switch is in the ON position and the brake pedal is depressed.

Key lock system

Key lock system : system description

  • The key lock mechanism also operates as a shift lock: With the ignition switch turned to ON, selector lever cannot be shifted from "P" position to any other position unless brake pedal is depressed.

    With the key removed, selector lever cannot be shifted from "P" position to any other position.

    The key cannot be removed unless selector lever is placed in "P" position.

  • The shift lock and key lock mechanisms are controlled by the ON-OFF operation of the shift lock solenoid and by the operation of the rotator and slider located inside key cylinder, respectively.
    More about «Transaxle & transmission (TM)»:

    Precautions

    Structure and operation

    Position switch

    Gear oil

    Side oil seal

    Position switch

    Control linkage

    Air breather hose

    5Th main gear assembly

    Transaxle assembly

    Transaxle assembly

    Input shaft and gear

    Mainshaft and gear

    Final drive

    Precautions

    A/T Control system

    A/T Shift lock system

    Transaxle

    A/T control system

    Line pressure control

    Shift change control

    Lock-up control

    Diagnosis description

    Consult function

    TCM

    Diagnosis and repair work flow

    Additional service when replacing TCM

    Additional service when replacing transaxle assembly

    A/T Fluid cooler

    Stall test

    Line pressure test

    U0073 Communication bus a off

    U0100 Lost communication (ECM A)

    U0140 Lost communication (BCM)

    U0155 Lost communication (IPC)

    U0300 Can communication data

    U1000 Can comm circuit

    U1117 Lost communication (ABS)

    P062F EEPROM

    P0705 Transmission range switch A

    P0706 Transmission range sensor A

    P0711 Transmission fluid temperature sensor A

    P0712 Transmission fluid temperature sensor A

    P0713 Transmission fluid temperature sensor A

    P0717 Input speed sensor A

    P0720 Output speed sensor

    P072C Stuck in 1GR

    P072D Stuck in 2GR

    P072E Stuck in 3GR

    P072F Stuck in 4GR

    P0731 1GR Incorrect ratio

    P0732 2GR Incorrect ratio

    P0733 3GR Incorrect ratio

    P0734 4GR Incorrect ratio

    P073E Unable to engage r range

    P073F Unable to engage 1GR

    P0740 Torque converter

    P0743 Torque converter

    P0744 Torque converter

    P074A Unable to engage 2GR

    P074B Unable to engage 3GR

    P074C Unable to engage 4GR

    P0863 TCM Communication

    P0890 TCM

    P0962 Pressure control solenoid A

    P0963 Pressure control solenoid A

    P0973 Shift solenoid A

    P0974 Shift solenoid A

    P0976 Shift solenoid B

    P0977 Shift solenoid B

    P0979 Shift solenoid C

    P0980 Shift solenoid C

    P0982 Shift solenoid D

    P0983 Shift solenoid D

    P2760 Torque converter

    Main power supply and ground circuit

    Overdrive control switch

    O/D OFF indicator lamp

    Shift position indicator circuit

    Shift lock system

    A/T Fluid

    A/T Shift selector

    Control cable

    Key interlock cable

    TCM

    Oil pan

    Output speed sensor

    Differential side oil seal

    Fluid cooler tube

    Transmission assembly

    Service data and specifications (SDS)

    Precautions

    Component parts

    Shift lock system

    Structure and operation

    Fluid cooler & fluid warmer system

    CVT Control system

    Line pressure control

    Shift control

    Lock-up control

    Idle neutral control

    Diagnosis system (TCM)

    TCM

    Diagnosis and repair work flow

    Additional service when replacing TCM

    Additional service when replacing transaxle assembly

    Calibration of G Sensor

    CVT Fluid cooler system

    Stall test

    Line pressure test

    U0073 Communication bus A off

    U0100 Lost communication (ECM A)

    U0140 Lost communication (BCM)

    U0141 Lost communication (BCM A)

    U0155 Lost communication (IPC)

    U0300 Can communication data

    U1000 Can COMM circuit

    U1117 Lost communication (ABS)

    P062F EEPROM

    P0705 Transmission range sensor A

    P0706 Transmission range sensor A

    P0711 Transmission fluid temperature sensor A

    P0712 Transmission fluid temperature sensor A

    P0713 Transmission fluid temperature sensor A

    P0715  Input speed sensor A

    P0720 Output speed sensor

    P0740 Torque converter

    P0743 Torque converter

    P0744 Torque converter

    P0746 Pressure control solenoid A

    P0846 Transmission fluid pressure SEN/SW B

    P0847 Transmission fluid pressure SEN/SW B

    P0848 Transmission fluid pressure SEN/SW B

    P0863 TCM Communication

    P0890 TCM

    P0962 Pressure control solenoid A

    P0963 Pressure control solenoid A

    P0965 Pressure control solenoid B

    P0966 Pressure control solenoid B

    P0967 Pressure control solenoid B

    P0998 Shift solenoid F

    P0999 Shift solenoid F

    P099B Shift solenoid G

    P099C Shift solenoid G

    P1586 G Sensor

    P1588 G Sensor

    P2765 Clutch B speed sensor

    P2857 Clutch A pressure

    P2858 Clutch B pressure

    P2859 Clutch A pressure

    P285A Clutch B pressure

    Main power supply and ground circuit

    Overdrive control switch

    OD OFF indicator lamp

    Shift position indicator circuit

    Shift lock system

    CVT Control system

    CVT Fluid

    CVT Shift selector

    Control cable

    Key interlock cable

    TCM

    Air breather hose

    G Sensor

    Oil pan

    Primary speed sensor

    Secondary speed sensor

    Output speed sensor

    Differential side oil seal

    Water hose

    Fluid cooler hose

    PLUG

    Transmission assembly

    Service data and specifications (SDS)

    Nissan Versa Sedan Service Manual / Transmission & driveline / Transaxle & transmission (TM) / Transaxle

    Nissan Versa Sedan Service Manual

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