Nissan Quest E52. Instruction — part 1195
TM-10
< SYSTEM DESCRIPTION >
[CVT: RE0F09B]
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
CVT CONTROL SYSTEM
CVT CONTROL SYSTEM : Component Parts Location
INFOID:0000000009650059
COMPONENT DESCRIPTION
A.
Engine room
B.
Engine room, left side
C.
Transaxle assembly
D
Brake pedal, upper
JSDIA2734GB
No.
Component
Function
1
Overdrive control switch
TM-15, "CVT CONTROL SYSTEM : Overdrive Control Switch"
2
BCM
• The TCM receives the following signal via CAN communications from the
BCM for judging the vehicle driving conditions.
- Stop lamp switch signal
COMPONENT PARTS
TM-11
< SYSTEM DESCRIPTION >
[CVT: RE0F09B]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
*: These components are installed in control valve assembly.
CVT CONTROL SYSTEM : TCM
INFOID:0000000009650060
Judges driving condition according to signals from each sensor, and optimally controls variable speed mecha-
nism.
CVT CONTROL SYSTEM : Transmission Range Switch
INFOID:0000000009650061
• The transmission range switch is included in the control valve assembly.
• The transmission range switch includes 4 transmission position switches.
• TCM judges the selector lever position by the transmission range switch signal.
3
ECM
• For purposes including improving the feeling when shifting speeds and
preventing drops in engine speed, control signals are exchanged between
the ECM and TCM, and real-time cooperative control is performed accord-
ing to the vehicle driving conditions. (Engine and CVT integrated control)
- Engine and CVT integrated control signal
NOTE:
General term for the communication (torque-down permission, torque
down request, etc.) exchanged between the ECM and TCM.
• The TCM receives the following signal via CAN communications from the
ECM for judging the vehicle driving conditions.
- Engine speed signal
- Accelerator pedal position signal
4
Combination meter
• The TCM receives the following signal via CAN communications from the
combination meter for judging the driving request from the driver.
- Overdrive control switch signal
5
Shift position indicator
TM-15, "CVT CONTROL SYSTEM : Shift Position Indicator"
6
O/D OFF indicator lamp
TM-15, "CVT CONTROL SYSTEM : O/D OFF Indicator Lamp"
7
Stop lamp relay
TM-15, "CVT CONTROL SYSTEM : Stop Lamp Relay"
8
TCM
TM-11, "CVT CONTROL SYSTEM : TCM"
9
Secondary speed sensor
TM-12, "CVT CONTROL SYSTEM : Secondary Speed Sensor"
10
Control
valve
Transmission range switch*
TM-11, "CVT CONTROL SYSTEM : Transmission Range Switch"
CVT fluid temperature sensor*
TM-12, "CVT CONTROL SYSTEM : CVT Fluid Temperature Sensor"
Secondary pressure sensor*
TM-13, "CVT CONTROL SYSTEM : Secondary Pressure Sensor"
Primary pressure sensor*
TM-13, "CVT CONTROL SYSTEM : Primary Pressure Sensor"
Primary speed sensor*
TM-12, "CVT CONTROL SYSTEM : Primary Speed Sensor"
Line pressure solenoid valve*
TM-14, "CVT CONTROL SYSTEM : Line Pressure Solenoid Valve"
Secondary pressure solenoid valve*
TM-14, "CVT CONTROL SYSTEM : Secondary Pressure Solenoid Valve"
Torque converter clutch solenoid
valve*
TM-14, "CVT CONTROL SYSTEM : Torque Converter Clutch Solenoid
Lock-up select solenoid valve*
TM-14, "CVT CONTROL SYSTEM : Lock-up Select Solenoid Valve"
Step motor*
TM-15, "CVT CONTROL SYSTEM : Step Motor"
ROM assembly*
TM-15, "CVT CONTROL SYSTEM : ROM Assembly"
11
CVT unit connector
—
12
Stop lamp switch
No.
Component
Function
Shift position
Transmission range
switch 1
Transmission range
switch 2
Transmission range
switch 3
Transmission range
switch 4
Transmission range
switch 3 (monitor)
P
OFF
OFF
OFF
OFF
OFF
R
ON
OFF
OFF
ON
OFF
N
ON
ON
OFF
OFF
OFF
TM-12
< SYSTEM DESCRIPTION >
[CVT: RE0F09B]
COMPONENT PARTS
CVT CONTROL SYSTEM : CVT Fluid Temperature Sensor
INFOID:0000000009650062
• The CVT fluid temperature sensor is included in the control valve assembly.
• The CVT fluid temperature sensor detects the CVT fluid temperature and sends a signal to the TCM.
• 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 : Primary Speed Sensor
INFOID:0000000009650063
• The primary speed sensor is included in the control valve assembly.
• The primary speed sensor detects the primary pulley revolution speed and sends a signal to the TCM.
• 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:0000000009650064
• The secondary speed sensor is installed in the rear of transaxle assembly.
D
ON
ON
ON
ON
ON
L
OFF
ON
ON
OFF
ON
Shift position
Transmission range
switch 1
Transmission range
switch 2
Transmission range
switch 3
Transmission range
switch 4
Transmission range
switch 3 (monitor)
JSDIA1825GB
JSDIA2167GB
COMPONENT PARTS
TM-13
< SYSTEM DESCRIPTION >
[CVT: RE0F09B]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
• The secondary speed sensor detects the secondary pulley revolution speed and sends a signal to the TCM.
• 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.
CVT CONTROL SYSTEM : Primary Pressure Sensor
INFOID:0000000009650065
• The primary pressure sensor is included in the transaxle assembly.
• The primary pressure sensor detects primary pressure of CVT and sends a signal to the TCM.
• When pressure is applied to the ceramic device in the primary pressure sensor, the ceramic device is
deformed, resulting in voltage change. TCM evaluates the primary pressure from its voltage change. Voltage
is increased along with pressure increase.
CVT CONTROL SYSTEM : Secondary Pressure Sensor
INFOID:0000000009650066
• The secondary pressure sensor is included in the control valve assembly.
• The secondary pressure sensor detects secondary pressure of CVT and sends a signal to the TCM.
JSDIA1824GB
JSDIA1831GB
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