Nissan Pathfinder. Manual — part 1142
STRUCTURE AND OPERATION
TM-27
< SYSTEM DESCRIPTION >
[CVT: RE0F10E]
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• The CVT oil warmer is installed on the front part of transaxle
assembly.
• When engine is started while engine and CVT are cold, engine
coolant temperature rises more quickly than CVT fluid tempera-
ture. CVT oil warmer is provided with two circuits for CVT and
engine coolant respectively so that warmed engine coolant warms
CVT quickly. This helps shorten CVT warming up time, improving
fuel economy.
• A cooling effect is obtained when CVT fluid temperature is high.
CVT Fluid Cooler
• The CVT fluid cooler is installed to the vehicle front LH.
• The CVT fluid cooler prevents CVT fluid temperature from an
abnormal increase while driving the vehicle. When flowing into the
CVT fluid cooler, CVT fluid is cooled by driving blast while driving
the vehicle.
Bypass Valve
• The bypass valve is installed to the CVT fluid cooler.
• Bypass valve controls CVT fluid flow.
• When CVT fluid temperature is low, the bypass valve is open. Most of CVT fluid therefore returns to the tran-
saxle without flowing into the cooler core that has larger flow resistance.
JSDIA4001ZZ
JSDIA4002ZZ
JSDIA4091ZZ
JSDIA4092GB
TM-28
< SYSTEM DESCRIPTION >
[CVT: RE0F10E]
STRUCTURE AND OPERATION
• When CVT fluid temperature rises [to approximately 65
°C (149°F)], bypass valve fully closes and allows
CVT fluid to flow into cooler core. CVT fluid flowing into cooler core is cooled by air stream caused by vehicle
travel and returned to transaxle.
Heater Thermostat
• The heater thermostat is installed on the front part of transaxle
assembly.
• The heater thermostat open and close with set temperature.
SHIFT LOCK SYSTEM
SHIFT LOCK SYSTEM : System Description
INFOID:0000000009177506
The shift lever cannot be shifted from the “P” position unless the brake pedal is depressed while the ignition
switch is set to ON. The shift lock is unlocked by turning the shift lock solenoid ON when the ignition switch is
set to ON, the park position switch is turned ON (selector lever is in “P” position), and the stop lamp switch is
turned ON (brake pedal is depressed) as shown in the operation chart in the figure. Therefore, the shift lock
solenoid receives no ON signal and the shift lock remains locked if all of the above conditions are not fulfilled.
However, selector operation is allowed if the shift lock release button is pressed.
SHIFT LOCK OPERATION AT “P” POSITION
When Brake Pedal Is Not Depressed (No Selector Operation Allowed)
The shift lock solenoid (A) is turned OFF (not energized) and the
solenoid rod (B) is extended with the spring when the brake pedal is
not depressed (no selector operation allowed) with the ignition
switch ON.
The connecting lock lever (C) is located at the position shown in the
figure when the solenoid rod is extended. It prevents the movement
of the detent rod (D). For these reasons, the selector lever cannot be
shifted from the “P” position.
When Brake Pedal Is Depressed (Shift Operation Allowed)
JSDIA4093GB
JSDIA4004ZZ
JPDIA0612ZZ
STRUCTURE AND OPERATION
TM-29
< SYSTEM DESCRIPTION >
[CVT: RE0F10E]
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The shift lock solenoid (A) is turned ON (energized) when the brake
pedal is depressed with the ignition switch ON. The solenoid rod (B)
is compressed by the electromagnetic force. The connecting lock
lever (C) rotates when the solenoid is activated. Therefore, the
detent rod (D) can be moved. For these reasons, the selector lever
can be shifted to other positions.
“P” POSITION HOLD MECHANISM (IGNITION SWITCH LOCK)
The shift lock solenoid (A) is not energized when the ignition switch
is in any position other than ON. In this condition, the shift mecha-
nism is locked and “P” position is held. The operation cannot be per-
formed from “P” position if the brake pedal is depressed with the
ignition switch ON when the operation system of shift lock solenoid is
malfunctioning. However, the lock lever (B) is forcibly rotated and the
shift lock is released when the shift lock release button (C) is
pressed from above. Then the selector operation from “P” position
can be performed.
CAUTION:
Use the shift lock release button only when the selector lever cannot be operated even if the brake
pedal is depressed with the ignition switch ON.
JPDIA0613ZZ
D
: Detent rod
JPDIA0614ZZ
TM-30
< SYSTEM DESCRIPTION >
[CVT: RE0F10E]
SYSTEM
SYSTEM
CVT CONTROL SYSTEM
CVT CONTROL SYSTEM : System Description
INFOID:0000000009177507
SYSTEM DIAGRAM
MAIN CONTROL CONTENTS OF TCM
LIST OF CONTROL ITEMS AND INPUT/OUTPUT
JSDIA4007GB
Controls
Reference
Line pressure control
TM-35, "LINE PRESSURE CONTROL : System Description"
Shift control
TM-36, "SHIFT CONTROL : System Description"
Select control
TM-38, "SELECT CONTROL : System Description"
Lock-up control
TM-39, "LOCK-UP CONTROL : System Description"
Fail-safe
Self-diagnosis function
Communication function with CONSULT
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