Nissan Quest E52. Manual - part 1196

TM-14

< SYSTEM DESCRIPTION >

[CVT: RE0F09B]

COMPONENT PARTS

• 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 : Secondary Pressure Solenoid Valve

INFOID:0000000009650067

• The secondary pressure solenoid valve is included in the control valve assembly.
• The secondary pressure solenoid valve controls secondary valve. For detailed secondary valve, refer to 

TM-

21, "TRANSAXLE : Component Description"

.

• The secondary pressure solenoid valve contains a 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 : Line Pressure Solenoid Valve

INFOID:0000000009650068

• The line pressure solenoid valve is included in the control valve assembly.
• Line pressure solenoid valve controls pressure regulator valve. For detailed pressure regulator valve, refer

to 

TM-21, "TRANSAXLE : Component Description"

.

• The line pressure solenoid valve contains a 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:0000000009650069

• The torque converter clutch solenoid valve is included in the control valve assembly.
• The torque converter clutch solenoid valve controls TCC control valve. For detailed TCC control valve, refer

to 

TM-21, "TRANSAXLE : Component Description"

.

• The torque converter clutch solenoid valve contains a 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 : Lock-up Select Solenoid Valve

INFOID:0000000009650070

• The lock-up select solenoid valve is included in the control valve assembly.
• The lock-up select solenoid valve controls the select switch valve. For detailed secondary valve, refer to 

TM-

21, "TRANSAXLE : Component Description"

.

• The lock-up select solenoid valve contains an ON/OFF solenoid valve.

NOTE:

JSDIA1831GB

COMPONENT PARTS

TM-15

< SYSTEM DESCRIPTION >

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• The only operations of the valve spool installed inside the coil are pressing or not pressing the ball which

seals the hydraulic supply section into the seat. This A/T uses N/L (Normal Low) type.

• When voltage is not applied to the coil, the force of the pilot pressure presses the ball against the seat,

stopping the pilot pressure at that point.

• When voltage is applied to the coil, the valve is pulled in the direction of the coil, disengaging the hydraulic

seal which the ball creates. This supplies pilot pressure to the operating locations.

CVT CONTROL SYSTEM : Step Motor

INFOID:0000000009650071

The step motor changes the step by turning 4 coils ON/OFF according to the signal from TCM. As a result, the
flow of line pressure to primary pulley is changed and pulley ratio is controlled.

CVT CONTROL SYSTEM : ROM Assembly

INFOID:0000000009650072

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 : Shift Position Indicator

INFOID:0000000009650073

• The shift position indicator is located in the combination meter.
• TCM transmits shift position signal to combination meter via CAN communication. The actual shift position is

displayed on combination meter according to the signal.

CVT CONTROL SYSTEM : Overdrive Control Switch

INFOID:0000000009650074

• The overdrive control switch is installed on the selector lever knob.
• If the overdrive control switch is pressed when the O/D OFF indicator lamp on the combination meter is not

lit, the status changes to overdrive OFF and the O/D OFF indicator lamp illuminates.

• If the overdrive control switch is pressed when the O/D OFF indicator lamp on the combination meter is lit,

the overdrive OFF status is canceled and the O/D OFF indicator lamp turns off.

CVT CONTROL SYSTEM : O/D OFF Indicator Lamp

INFOID:0000000009650075

• The O/D OFF indicator lamp is located in the combination meter.
• The O/D OFF indicator lamp illuminates when the overdrive function is deactivated (O/D OFF).
• For checking the bulb, this lamp turns on for a certain period of time when the ignition switch turns ON, and

then turns off.

CVT CONTROL SYSTEM : Stop Lamp Relay

INFOID:0000000009650076

The stop lamp relay is turned ON by the stop lamp switch operation.

SHIFT LOCK SYSTEM

Condition (status)

O/D OFF indicator lamp

Ignition switch OFF.

OFF

Ignition switch ON.

ON (Approx. 2 seconds)

Overdrive control switch is pressed when the selector lever is in the “D” position 
and the O/D OFF indicator lamp is OFF (when system is normal).

ON

Overdrive control switch is pressed when the selector lever is in the “D” position 
and the O/D OFF indicator lamp is ON.

OFF

Selector lever is shifted from the “D” position to another position when the O/D 
OFF indicator lamp is ON.

OFF

TM-16

< SYSTEM DESCRIPTION >

[CVT: RE0F09B]

COMPONENT PARTS

SHIFT LOCK SYSTEM : Component Parts Location

INFOID:0000000009650077

COMPONENT DESCRIPTION

A.

CVT shift selector assembly

B.

Brake pedal, upper

JSDIA2754ZZ

No.

Component

Function

1

Shift lock release button

Forcibly releases the shift lock when pressed.

2

Shift lock solenoid

It operates according to the signal from the stop lamp switch and moves the lock lever.

3

Park position switch

It detects that the selector lever is in “P” position.

4

Stop lamp switch

• The stop lamp switch turns ON when the brake pedal is depressed.
• When the stop lamp switch turns ON, the shift lock solenoid is energized.

STRUCTURE AND OPERATION

TM-17

< SYSTEM DESCRIPTION >

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STRUCTURE AND OPERATION

TRANSAXLE

TRANSAXLE : Exploded View

INFOID:0000000009650078

TRANSAXLE : Planetary Gear

INFOID:0000000009650079

• A planetary gear type of forward/reverse selector mechanism is installed between the torque converter and

primary pulley.

1.

Converter housing

2.

Oil pump

3.

Forward clutch

4.

Reverse brake

5.

Planetary carrier

6.

Primary pulley

7.

Steel belt

8.

Sun gear

9.

Side cover

10. Internal gear

11. Secondary pulley

12. Final gear

13. Differential case

14. Idler gear

15. Reduction gear

16. Taper roller bearing

17. Output gear

18. Parking gear

19. Input shaft

20. Torque converter

JSDIA2729ZZ