Nissan Rogue manuals

Nissan Rogue Service Manual: Structure and operation

TRANSAXLE

TRANSAXLE : Cross-Sectional View

Transaxle : cross-sectional view

  1. Converter housing
  2. Oil pump
  3. Planetary gear
  4. Control valve
  5. Oil pan
  6. Steel belt
  7. Primary pulley
  8. Secondary pulley
  9. Side cover
  10. Transaxle case
  11. Differential case
  12. Final gear
  13. Reduction gear
  14. Idler gear
  15. Output gear
  16. Drive sprocket
  17. Torque converter
  18. Driven sprocket
  19. Oil pump chain
  1. FWD
  2. AWD

TRANSAXLE : Operation Status

Transaxle : operation status

TRANSAXLE : Transaxle Mechanism

TORQUE CONVERTER (WITH LOCK-UP FUNCTION)

In the same way as a conventional A/T, the torque converter is a system that increases the engine torque and transmits the torque to the transaxle. A symmetrical 3-element, 1-stage, 2-phase type is used here.

OIL PUMP

Utilizes a vane-type oil pump that is driven by the engine through the oil pump drive chain in order to increase efficiency of pump discharge volume in low-speed zone and optimize pump discharge volume in high-speed zone. Discharged oil from oil pump is transmitted to control valve. It is used as the oil of primary and secondary pulley operation, the oil of clutch operation, and the lubricant for each part.

PLANETARY GEAR

Operation of Planetary gear

Operation of Planetary gear

BELT & PULLEY

It is composed of a pair of pulleys (the groove width is changed freely in the axial direction) and the steel belt (the steel plates are placed continuously and the belt is guided with the multilayer steel rings on both sides).

The groove width changes according to wrapping radius of steel belt and pulley from low status to overdrive status continuously with non-step. It is controlled with the oil pressures of primary pulley and secondary pulley.

Belt & pulley

Steel Belt

It is composed of multiple steel plates A and two steel rings B stacked to a several number. The feature of this steel belt transmits power with compression of the steel plate in contrast with transmission of power in pulling with a rubber belt. Friction force is required with the pulley slope to transmit power from the steel plate. The force is generated with the following mechanism: Oil pressure applies to the secondary pulley to nip the plate. ⇒The plate is pushed and extended outward. ⇒The steel ring shows withstands.

⇒Pulling force is generated on the steel ring. ⇒The plate of the primary pulley is nipped between the pulley. ⇒Friction force is generated between the steel belt and the pulley.

Therefore, responsibilities are divided by the steel plate that transmits the power with compression and the steel ring that maintains necessary friction force. In this way, the tension of the steel ring is distributed on the entire surface and stress variation is limited, resulting in good durability.

Steel Belt

Pulley

The primary pulley (input shaft side) and the secondary pulley (output shaft side) have the shaft with slope (fixed cone surface), movable sheave (movable cone surface that can move in the axial direction) and oil pressure chamber at the back of the movable sheave.

The movable sheave slides on the shaft to change the groove width of the pulley. Input signals of engine load (accelerator pedal opening), primary pulley speed and secondary pulley speed change the operation pressures of the primary pulley and the secondary pulley, and controls the pulley groove width.

Pulley

FINAL DRIVE AND DIFFERENTIAL

The deceleration gears are composed of 2 stages: primary deceleration (output gear, idler gear pair) and secondary deceleration (reduction gear, final gear pair). All of these gears are helical gears.

The lubrication oil is the same as the CVT fluid which lubricates the entire transaxle

Final drive and differential

TRANSAXLE : Oil Pressure System

Oil pressure required for operation of the transaxle transmission mechanism is generated by oil pump, oil pressure control valve, solenoid valve, etc.

Transaxle : oil pressure system

TRANSAXLE : Component Description

Part name Function
Torque converter Increases engine torque and transmits it to the transaxle.
Oil pump Utilizes a vane-type oil pump that is driven by the engine through the oil pump drive chain in order to increase efficiency of pump discharge volume in low-speed zone and optimize pump discharge volume in high-speed zone. Discharged oil from oil pump is transmitted to control valve. It is used as the oil of primary and secondary pulley operation, the oil of clutch operation, and the lubricant for each part.
Forward clutch The forward clutch is wet and multiple plate type clutch that consists of clutch drum, piston, drive plate, and driven plate. It is a clutch to move the vehicle forward by activating piston hydraulically, engaging plates, and directly connecting sun gear and input shaft.
Reverse brake The reverse brake is a wet multiple-plate type brake that consists of transaxle case, piston, drive plate, and driven plate. It is a brake to move the vehicle in reverse by activating piston hydraulically, engaging plates, and fixing planetary gear.
Internal gear The internal gear is directly connected to forward clutch drum. It is a gear that moves the outer edge of pinion planet of planet carrier. It transmits power to move the vehicle in reverse when the planet carrier is fixed.
Planet carrier Composed of a carrier, pinion planet, and pinion shaft. This gear fixes and releases the planet carrier in order to switch between forward and reverse driving.
Sun gear Sun gear is a set part with planet carrier and internal gear. It transmits transmitted force to primary fixed sheave. It rotates in forward or reverse direction according to activation of either forward clutch or reverse brake.
Input shaft The input shaft is directly connected to forward clutch drum and transmits traction force from torque converter.

In shaft center, there are holes for hydraulic distribution to primary pulley and hydraulic distribution for lockup ON/OFF.

Primary pulley It is composed of a pair of pulleys (the groove width is changed freely in the axial direction) and the steel belt. The groove width changes according to wrapping radius of steel belt and pulley from low status to overdrive status continuously with non-step. It is controlled with the oil pressures of primary pulley and secondary pulley.
Secondary pulley
Steel belt
Manual shaft When the manual shaft is in the P position, the parking rod that is linked to the manual shaft rotates the parking pole. When the parking pole rotates, it engages with the parking gear, fixing the parking gear. As a result, the secondary pulley that is integrated with the parking gear is fixed.
Parking rod
Parking pawl
Parking gear
Output gear The deceleration gears are composed of 2 stages: primary deceleration (output gear, idler gear pair) and secondary deceleration (reduction gear, final gear pair). All of these gears are helical gears.
Idler gear
Reduction gear
Differential
Torque converter regulator valve Adjusts the feed pressure to the torque converter to the optimum pressure corresponding to the driving condition.
Pressure regulator valv Adjusts the discharge pressure from the oil pump to the optimum pressure (line pressure) corresponding to the driving condition.
Torque converter clutch control valve Adjusts the torque converter engage and disengage pressures.
Manual valve Distributes the clutch operation pressure to each circuit according to the selector lever position.
Secondary reducing valve Reduces line pressure and adjusts secondary pressure.
Primary reducing valve Reduces line pressure and adjusts primary pressure.
Pilot valve A Reduces line pressure and adjusts pilot pressure to the solenoid valves listed below.
  •  Primary pressure solenoid valve
  •  Secondary pressure solenoid valve
  •  Select solenoid valve
  •  Line pressure solenoid valve
Pilot valve B Reduces pilot pressure and adjusts pilot pressure to the torque converter clutch solenoid valve.

FLUID COOLER & FLUID WARMER SYSTEM

FLUID COOLER & FLUID WARMER SYSTEM : System Description

CVT FLUID COOLER SCHEMATIC

CVT fluid cooler schematic

COMPONENT DESCRIPTION

CVT Oil Warmer

CVT Oil Warmer

Heater Thermostat

Heater Thermostat

CVT Fluid Cooler (Water Cooling Type)

CVT Fluid Cooler (Water Cooling Type)

SHIFT LOCK SYSTEM

SHIFT LOCK SYSTEM : System Description

SHIFT LOCK OPERATION AT P POSITION

When brake pedal is not depressed (no selector operation allowed) When the brake pedal is not depressed with the ignition switch ON, the shift lock solenoid A is OFF (not energized) and the solenoid rod B is extended with spring.

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. The selector lever cannot be shifted from the “P” position for this reason.

Shift lock operation at P position

When brake pedal is depressed (selector lever operation allowed) 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 with the electromagnetic force. The connecting lock lever C rotates when the solenoid rod is compressed. Therefore, the detent rod D can be moved. The selector lever can be shifted to other positions for this reason.

Shift lock operation at P position

FORCIBLE RELEASE OF SHIFT LOCK

Forcible release of shift lock

  1.  Turn ignition switch OFF.
  2.  Apply parking brake.
  3. Press the shift lock release button 1 with suitable tool.
  4.  Press and hold the selector lever knob button and move the selector lever from “P” position to other positions while press the shift lock release button.

Forcible release of shift lock

KEY LOCK SYSTEM

KEY LOCK SYSTEM : System Description

KEY LOCK MECHANISM

The key is not set to LOCK when the selector lever is not selected to P position. This prevents the key from being removed from the key cylinder.

Key lock status

The slider B in the key cylinder A is moved to the left side of the figure when the selector lever is in any position other than “P” position.

The rotator D that rotates together with the key C cannot be rotated for this reason. The key cannot be removed from the key cylinder because it cannot be turned to LOCK .

Key lock status

Key unlock status

The slider B in the key cylinder A is moved to the right side of the figure when the selector lever is in “P” position and the finger is removed from the selector button. The rotator C can be rotated for this reason. The key D can be removed from the key cylinder because it can be turned to LOCK E.

Key unlock status

Component parts
CVT CONTROL SYSTEM CVT CONTROL SYSTEM : Component Parts Location   Engine room, LH Transaxle assembly No. Component Function 1 Combination meter Mainly tra ...

System
CVT CONTROL SYSTEM CVT CONTROL SYSTEM : System Description SYSTEM DIAGRAM MAIN CONTROL CONTENTS OF TCM Controls Reference Line pressure control TM-36, "LINE PRESSURE ...

Other materials:

Symptom diagnosis
ENGINE DOES NOT START WHEN INTELLIGENT KEY IS INSIDE OF VEHICLE Description Engine does not start when push-button ignition switch is pressed while carrying Intelligent Key. NOTE:  Check that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnos ...

C1113, C1145, C1146 yaw rate/side/decel G sensor
DTC Display Item Malfunction detected condition Possible causes C1113 G SENSOR When a malfunction is detected in longitudinal G sensor signal. Harness or connector  Yaw rate/side/decel G sensor • ABS actuator and electric unit (control ...

P0643 sensor power supply
Description ECM supplies a voltage of 5 V to some of the sensors systematically divided into 2 groups, respectively. Accordingly, when a short circuit develops in a sensor power source, a malfunction may occur simultaneously in the sensors belonging to the same group as the short-circuited ...

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