Nissan Versa Sedan. Manual — part 839
TM-262
< SYSTEM DESCRIPTION >
[CVT: RE0F11A]
COMPONENT PARTS
*: These components are included in control valve assembly.
CVT CONTROL SYSTEM : TCM
INFOID:0000000009268059
• The vehicle driving status is judged based on the signals from the sensors, switches, and other control units,
and the optimal transaxle control is performed.
• For TCM control items, refer to
TM-274, "CVT CONTROL SYSTEM : System Description"
CVT CONTROL SYSTEM : ROM Assembly
INFOID:0000000009268060
• The ROM assembly is installed to control valve.
Component
Function
IPDM E/R
The TCM receives the A/C compressor feedback signal via CAN communica-
tions from the IPDM E/R.
TCM
TM-262, "CVT CONTROL SYSTEM : TCM"
Transmission range switch
TM-263, "CVT CONTROL SYSTEM : Transmission Range Switch"
Primary speed sensor
TM-263, "CVT CONTROL SYSTEM : Primary Speed Sensor"
CVT unit
—
Control
valve
ROM assembly*
TM-262, "CVT CONTROL SYSTEM : ROM Assembly"
CVT fluid temperature sensor*
TM-264, "CVT CONTROL SYSTEM : CVT Fluid Temperature Sensor"
Secondary pressure sensor*
TM-264, "CVT CONTROL SYSTEM : Secondary Pressure Sensor"
Primary pressure solenoid valve*
TM-265, "CVT CONTROL SYSTEM : Primary Pressure Solenoid Valve"
Low brake solenoid valve*
TM-265, "CVT CONTROL SYSTEM : Low Brake Solenoid Valve"
High clutch & reverse brake solenoid
valve*
TM-265, "CVT CONTROL SYSTEM : High Clutch & Reverse Brake Solenoid
Valve"
Torque converter clutch solenoid valve*
TM-265, "CVT CONTROL SYSTEM : Torque Converter Clutch Solenoid Valve"
Line pressure solenoid valve*
TM-266, "CVT CONTROL SYSTEM : Line Pressure Solenoid Valve"
Output speed sensor
TM-264, "CVT CONTROL SYSTEM : Output Speed Sensor"
Secondary speed sensor
TM-263, "CVT CONTROL SYSTEM : Secondary Speed Sensor"
G sensor
TM-266, "CVT CONTROL SYSTEM : G Sensor"
Overdrive control switch
TM-266, "CVT CONTROL SYSTEM : Overdrive Control Switch"
Combination meter
The TCM receives the sport mode switch signal via CAN communications from
the combination meter.
ABS actuator and electric unit (control unit)
The TCM receives the following signals via CAN communications from the ABS
actuator and electric unit (control unit).
• Vehicle speed signal
• VDC operation signal
• VDC malfunction signal
ECM
• For purposes including improving the feeling when shifting and preventing
drops in engine speed, control signals are exchanged between the ECM and
TCM, and real-time cooperative control is performed according to the vehicle
driving conditions. (Engine and CVT integrated control)
- Engine and CVT integrated control signal
• The TCM receives the following signals via CAN communications from the
ECM.
- Engine speed signal
- Accelerator pedal position signal
- Closed throttle position signal
• TCM sends and receives the following signals with ECM through CAN com-
munication to perform D position N idle control.
- N idle instruction signal
BCM
The TCM receives the following signals via CAN communications from the
BCM.
• Stop lamp switch signal
• Turn indicator signal
COMPONENT PARTS
TM-263
< SYSTEM DESCRIPTION >
[CVT: RE0F11A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
• The ROM assembly stores the calibration data (characteristic value) of each solenoid valve. TCM enables
accurate hydraulic control by obtaining the calibration data.
CVT CONTROL SYSTEM : Transmission Range Switch
INFOID:0000000009268061
• The transmission range switch is installed to upper part of transaxle case.
• The transmission range switch detects the selector lever position.
CVT CONTROL SYSTEM : Primary Speed Sensor
INFOID:0000000009268062
• The primary speed sensor is installed to side cover of transaxle.
• The primary speed sensor detects primary pulley speed.
• The primary speed sensor generates the ON-OFF pulse (short waveform) in proportion to the rotating body
speed which is “The higher the rotating body speed is, the faster the change cycle is”. The TCM judges the
rotating speed from the changing cycle of this pulse signal.
CVT CONTROL SYSTEM : Secondary Speed Sensor
INFOID:0000000009268063
• The secondary speed sensor is installed to side cover of transaxle.
• The secondary speed sensor detects secondary pulley speed.
• The secondary speed sensor generates the ON-OFF pulse (short waveform) in proportion to the rotating
body speed which is “The higher the rotating body speed is, the faster the change cycle is”. The TCM judges
the rotating speed from the changing cycle of this pulse signal.
JSDIA1824GB
JSDIA1824GB
TM-264
< SYSTEM DESCRIPTION >
[CVT: RE0F11A]
COMPONENT PARTS
CVT CONTROL SYSTEM : Output Speed Sensor
INFOID:0000000009268064
• The output speed sensor is installed to the back side of transaxle case.
• The output speed sensor detects final gear speed. TCM evaluates the vehicle speed from the final gear rev-
olution.
• The output speed sensor generates the ON-OFF pulse (short waveform) in proportion to the rotating body
speed which is “The higher the rotating body speed is, the faster the change cycle is”. The TCM judges the
rotating speed from the changing cycle of this pulse signal.
CVT CONTROL SYSTEM : CVT Fluid Temperature Sensor
INFOID:0000000009268065
• The CVT fluid temperature sensor is installed to control valve.
• The CVT fluid temperature sensor detects CVT fluid temperature in oil pan.
• The fluid temperature sensor uses a thermistor, and changes the signal voltage by converting changes in the
CVT fluid temperature to a resistance value. TCM evaluates the CVT fluid temperature from the signal volt-
age value.
CVT CONTROL SYSTEM : Secondary Pressure Sensor
INFOID:0000000009268066
• The secondary pressure sensor is installed to control valve.
• The secondary pressure sensor detects the pressure applied to the secondary pulley.
JSDIA1824GB
JSDIA1825GB
COMPONENT PARTS
TM-265
< SYSTEM DESCRIPTION >
[CVT: RE0F11A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
• When pressure is applied to the ceramic device in the secondary pressure sensor, the ceramic device is
deformed, resulting in voltage change. TCM evaluates the secondary pressure from its voltage change. Volt-
age is increased along with pressure increase.
CVT CONTROL SYSTEM : Primary Pressure Solenoid Valve
INFOID:0000000009268067
• The primary pressure solenoid valve is installed to control valve.
• The primary pressure solenoid valve controls the primary pressure control valve. For information about the
primary pressure control valve, refer to
TM-271, "TRANSAXLE : Component Description"
• The primary pressure solenoid valve uses the linear solenoid valve [N/H (normal high) type].
NOTE:
• The principle of the linear solenoid valve utilizes the fact that the force pressing on the valve spool installed
inside the coil increases nearly in proportion to the current. This allows it to produce a fluid pressure that is
proportional to this pressing force.
• The N/H (normal high) produces hydraulic control when the coil is not energized.
CVT CONTROL SYSTEM : Low Brake Solenoid Valve
INFOID:0000000009268068
• The low brake solenoid valve is installed to control valve.
• The low brake solenoid valve adjusts the tightening pressure of the low brake.
• The low brake solenoid valve uses the linear solenoid valve [N/L (normal low) type].
NOTE:
• The principle of the linear solenoid valve utilizes the fact that the force pressing on the valve spool installed
inside the coil increases nearly in proportion to the current. This allows it to produce a fluid pressure that is
proportional to this pressing force.
• The N/L (normal low) type does not produce hydraulic control when the coil is not energized.
CVT CONTROL SYSTEM : High Clutch & Reverse Brake Solenoid Valve
INFOID:0000000009268069
• The high clutch & reverse brake solenoid valve is installed to control valve.
• The high clutch & reverse brake solenoid valve adjusts the tightening pressure of the high clutch and reverse
brake.
• The high clutch & reverse brake solenoid valve uses the linear solenoid valve [N/H (normal high) type].
NOTE:
• The principle of the linear solenoid valve utilizes the fact that the force pressing on the valve spool installed
inside the coil increases nearly in proportion to the current. This allows it to produce a fluid pressure that is
proportional to this pressing force.
• The N/H (normal high) produces hydraulic control when the coil is not energized.
CVT CONTROL SYSTEM : Torque Converter Clutch Solenoid Valve
INFOID:0000000009268070
• The torque converter clutch solenoid valve is installed to control valve.
• The torque converter clutch solenoid valve controls the torque converter clutch control valve. For information
about the torque converter clutch control valve, refer to
TM-271, "TRANSAXLE : Component Description"
.
• The torque converter clutch solenoid valve utilizes a linear solenoid valve [N/L (normal low) type].
NOTE:
JSDIA1831GB
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