Content .. 792 793 794 795 ..

Nissan Versa Sedan. Manual - part 794

TM-82

< SYSTEM DESCRIPTION >

[4AT: RE4F03C]

SYSTEM

P0717
P0720

• The gear is fixed in a position of error detection
• Lock-up is prohibited
• Slip lock-up is prohibited

During driving

• Locks in 3GR
• Lock-up is prohibited
• Slip lock-up is prohibited

Other than the above

P072C

Locks in 2GR

—

P072D

Locks in 3GR

—

P072E
P072F

The gear is fixed in neutral until vehicle speed decreases to be-
low 5 km/h (3 MPH) and in 2GR when reaching 5 km/h (3 MPH)
or more

—

P0731

• Locks in 2GR or 3GR
• Lock-up is prohibited

—

P0732

• Locks in 3GR
• Lock-up is prohibited

—

P0733
P0734

• The gear is fixed in neutral until vehicle speed decreases to

below 5 km/h (3 MPH) and in 2GR when reaching 5 km/h (3
MPH) or more

• Lock-up is prohibited

—

P073F

• Locks in 4GR
• Lock-up is prohibited

—

P0740
P0743
P0744

Lock-up is prohibited

—

P074A
P074B

• Locks in 4GR
• Lock-up is prohibited

—

P074C

• The gear is fixed in neutral until vehicle speed decreases to

below 5 km/h (3 MPH) and in 2GR or 3GR when reaching 5
km/h (3 MPH) or more

• Lock-up is prohibited

—

P0973
P0974

• The gear is fixed in neutral until vehicle speed decreases to

below 5 km/h (3 MPH) and in 2GR when reaching 5 km/h (3
MPH) or more

• Lock-up is prohibited

—

P0976
P0977

• Locks in 3GR
• Lock-up is prohibited

—

P0979
P0980

• The gear is fixed in neutral until vehicle speed decreases to

below 5 km/h (3 MPH) and in 3GR when reaching 5 km/h (3
MPH) or more

• Lock-up is prohibited

—

P0982
P0983

• Locks in 3GR
• Lock-up is prohibited

—

P2760

Slip lock-up is prohibited

—

U0073

• The gear is fixed in 3GR until vehicle speed decreases to be-

low 5 km/h (3 MPH) and in 2GR when reaching 5 km/h (3
MPH) or more

• Lock-up is prohibited
• Slip lock-up is prohibited

—

U0100

• Locks in 3GR
• Lock-up is prohibited
• Slip lock-up is prohibited

During driving

• Locks in 2GR
• Lock-up is prohibited
• Slip lock-up is prohibited

Other than the above

U0155

O/D OFF prohibited

—

DTC

Vehicle behavior

Vehicle condition

SYSTEM

TM-83

< SYSTEM DESCRIPTION >

[4AT: RE4F03C]

A/T CONTROL SYSTEM : Protection Control

INFOID:0000000009267846

The TCM becomes the protection control status temporarily to protect the safety when the safety of TCM and

transmission is lost. It automatically returns to the normal status if the safety is secured.

The TCM is equipped with the following protection control.

REVERSE INHIBIT CONTROL

Intercepts the torque transmission and shifts to the neutral status if the selector lever is shifted to “R” position

while the vehicle moves forward at the vehicle speed 10 km/h (7 MPH) or more.

TCM HIGH TEMPERATURE PROTECTION CONTROL

When the ATF becomes hot, the shifting pattern is changed for preventing fluid temperature rise.

TORQUE-DOWN CONTROL WHEN CONTINUOUS STALL OCCURS IN D POSITION

If the accelerator pedal is continually depressed for a certain length of time when the selector lever is in the “D”

position and the vehicle is parked, the engine output is limited for protecting the transaxle.

O/D PROHIBIT CONTROL AT LOW TEMPERATURES

When the ATF temperature is low immediately after engine start, shifting to 4GR is prohibited for protecting the

transaxle and allowing the exhaust gas characteristics to warm up quickly.

U0300

• Locks in 3GR
• Lock-up is prohibited
• Slip lock-up is prohibited

During driving

• Locks in 2GR
• Lock-up is prohibited
• Slip lock-up is prohibited

Other than the above

DTC

Vehicle behavior

Vehicle condition

Operation detection conditions

• Vehicle speed: 10 km/h (7 MPH) or more (when driving forward)
• Selector lever is shifted to “R” position.

Control when activated

Neutral

Recovery condition

• Vehicle speed: 7 km/h (4 MPH) or less

and

• Engine speed: 2,800 rpm or less

Vehicle behavior

• The torque transmission cannot be performed
• There is a shock just before a vehicle stop

Operation detection conditions

ATF temp.: 125

°C (257°F) or more

Control when activated

Change the shift pattern so that higher upshift may be achieved.

Recovery condition

• ATF temp.: 119

°C (246°F) or less

Vehicle behavior

Upshifts at a higher vehicle speed than usual.

Operation detection conditions

The following conditions continue for 20 seconds or more
• Selector lever is in the “D” position or “R” position and the vehicle is stopped

and

• Engine speed: 2,300 – 2,850 rpm

Control when activated

Limits engine output

Recovery condition

• Selector lever is shifted to a position other than “D” or “R”

• The accelerator pedal is released

Vehicle behavior

• Decreased starting performance
• Engine speed hunching when the accelerator pedal is depressed

TM-84

< SYSTEM DESCRIPTION >

[4AT: RE4F03C]

SYSTEM

LINE PRESSURE CONTROL
LINE PRESSURE CONTROL : System Diagram

INFOID:0000000009267847

LINE PRESSURE CONTROL : System Description

INFOID:0000000009267848

• When an engine and A/T integrated control signal (engine torque) equivalent to the engine drive force is

transmitted from the ECM to the TCM, the TCM controls the line pressure solenoid valve.

This line pressure solenoid controls the pressure regulator valve as the signal pressure and adjusts the pres-

sure of the operating oil discharged from the oil pump to the line pressure most appropriate to the driving

state.

• The TCM has stored in memory a number of patterns for the optimum line pressure characteristic for the

driving state.

• In order to obtain the most appropriate line pressure characteristic to meet the current driving state, the TCM

controls the line pressure solenoid current value and thus controls the line pressure.

Normal Control

Operation detection conditions

• ATF temp.: 0

°C (32°F) or less

• ATF temp.: less than 40

°C (104°F) (when IGN is ON)

• Vehicle speed: 65 km/h (40 MPH) or less
• 3GR

Control when activated

4GR prohibited

Recovery condition

Less than 130 seconds following IGN ON
• ATF temp.: 40

°C (104°F) or more

• Vehicle speed: 65 km/h (40 MPH) or higher
After 130 seconds following IGN ON
• ATF temp.: 0

°C (32°F) or more

Vehicle behavior

Shifts up only as far as 3GR.

JSDIA1635GB

SYSTEM

TM-85

< SYSTEM DESCRIPTION >

[4AT: RE4F03C]

Each clutch is adjusted to the necessary pressure to match the

engine drive force.

Back-up Control (Engine Brake)

When the select operation is performed during driving and the A/T is

shifted down, the line pressure is set according to the vehicle speed.

During Shift Change

The necessary and adequate line pressure for shift change is set.

For this reason, line pressure pattern setting corresponds to engine

torque and gearshift selection. Also, line pressure characteristic cor-

responds to engine speed, during engine brake operation.

At Low Fluid Temperature

PCIA0008E

PCIA0009E

PCIA0010E

Content .. 792 793 794 795 ..