Nissan Maxima. Manual — part 1141
TM-28
< SYSTEM DESCRIPTION >
[CVT: RE0F09B]
LOCK-UP AND SELECT CONTROL SYSTEM
Component Parts Location
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AWDIA0564ZZ
LOCK-UP AND SELECT CONTROL SYSTEM
TM-29
< SYSTEM DESCRIPTION >
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Component Description
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TRANSAXLE ASSEMBLY
EXCEPT TRANSAXLE ASSEMBLY
1.
CVT shift selector assembly (Manual
mode select switch and manual
mode position select switch)
2.
Secondary speed sensor
3.
CVT unit harness connector
4.
TCM
5.
Accelerator pedal position (APP)
sensor
7.
Shift positioner indicator
Manual mode indicator
DS mode indicator
8.
Paddle shifters
Name
Function
Torque converter regulator valve
TCC control valve
Select control valve
Select switch valve
Manual valve
TCC solenoid valve
Lock-up select solenoid valve
Primary speed sensor
Secondary speed sensor
CVT fluid temperature sensor
Transmission range switch
Forward clutch
Reverse brake
Torque converter
Name
Function
TCM
Accelerator pedal position sensor
TM-30
< SYSTEM DESCRIPTION >
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SHIFT CONTROL SYSTEM
SHIFT CONTROL SYSTEM
System Diagram
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NOTE:
The gear ratio is set for each position separately.
System Description
INFOID:0000000010113447
In order to select the gear ratio that can obtain the driving force in accordance with driver's intention and the
vehicle condition, TCM monitors the driving conditions, such as the vehicle speed and the throttle position,
selects the optimum gear ratio, and determines the gear change steps to the gear ratio. Then TCM sends the
command to the step motor, controls the inflow/outflow of line pressure from the primary pulley to determine
the position of the moving-pulley and controls the gear ratio.
“D” POSITION
Shifting over all the ranges of gear ratios from the lowest to the high-
est.
“M” POSITION
By moving the selector lever to + side or - side, the manual mode
switch is changed over, and shift change like M/T becomes possible
following the changing gear set line step by step.
“DS” POSITION
• When the selector lever is put in the manual shift gate side, the driver can drive more sporty than “D” posi-
tion.
• “DS” mode can be switched according to the following method.
AWDIA0741GB
SCIA1953E
SCIA1953E
SCIA4582E
SHIFT CONTROL SYSTEM
TM-31
< SYSTEM DESCRIPTION >
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- When the selector lever is in the “D” position, shifting the selector lever to manual shift gate enables switch-
ing to “DS” mode.
- When in “DS” mode, shifting the selector lever to the main gate enables to cancel “DS” mode.
- After switching to manual mode with paddle shifter, switching to “DS” mode can not be enabled even when
the selector lever is shifted to the manual gate. (With paddle shifter)
DOWNHILL ENGINE BRAKE CONTROL (AUTO ENGINE BRAKE CONTROL)
When a downhill slope is detected with the accelerator pedal released, the engine brake will be strengthened
up by downshifting so as not to accelerate the vehicle more than necessary.
ACCELERATION CONTROL
According to vehicle speed and a change of accelerator pedal angle, driver's request for acceleration and driv-
ing scene are judged. This function assists improvement in the acceleration feeling by making the engine
speed proportionate to the vehicle speed. And a shift map that can gain a larger driving force is available for
compatibility of mileage with driveability.
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