Nissan Versa

 Sedan Service Manual

Transmission & driveline » Transaxle & transmission (TM)
Transaxle

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 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

*: 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

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

"1" position, "D1" position

• 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

• 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

• 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

• 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

• 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

• 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.

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)