Nissan X-Trail 32. Manual - part 651

COMPONENT PARTS

DLN-15

< SYSTEM DESCRIPTION >

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4WD Control Unit

INFOID:0000000010991954

• Controls driving force distribution by signals from each sensor from

front wheel driving mode (100:0) to 4-wheel driving mode (50:50).

• Fail-safe mode is available if malfunction is detected in 4WD sys-

tem. For fail-safe, refer to 

DLN-21, "4WD SYSTEM : Fail-Safe"

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4WD ACTUATOR RELAY

4WD actuator relay is integrated with 4WD control unit, and supplies 4WD solenoid with voltage. 

Electric Controlled Coupling

INFOID:0000000010991955

Electric controlled coupling is integrated with rear final drive and transmits driving force to rear final drive. For
operation, refer to 

DLN-17, "Operation Description"

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4WD Solenoid

INFOID:0000000010991956

• 4WD solenoid is integrated with electric controlled coupling.
• Controls electric controlled coupling by command current from 4WD control unit.

Combination meter

Mainly transmits the following signals to 4WD control unit via CAN communication.
• Parking brake switch signal
Mainly receives the following signals from 4WD control unit via CAN communication.
• 4WD warning lamp signal
• 4WD mode indicator lamp signal
• Torque distribution indicator signal
For detailed installation location, refer to 

MWI-7, "METER SYSTEM : Component Parts 

Location"

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ABS actuator and electric unit (con-
trol unit)

Mainly transmits the following signals to 4WD control unit via CAN communication.
• Each wheel speed signal
• Decel G sensor signal
• Side G sensor signal
• Yaw rate sensor signal
For detailed installation location, refer to 

BRC-14, "Component Parts Location"

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4WD mode switch

Refer to 

DLN-16, "4WD Mode Switch"

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4WD control unit
• 4WD actuator relay

Refer to 

DLN-15, "4WD Control Unit"

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Electric controlled coupling

Refer to 

DLN-15, "Electric Controlled Coupling"

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4WD solenoid

Refer to 

DLN-15, "4WD Solenoid"

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No.

Component

Function

JSDIA6388ZZ

DLN-16

< SYSTEM DESCRIPTION >

[TRANSFER: TY21C]

COMPONENT PARTS

4WD Mode Switch

INFOID:0000000010991957

4WD mode is selectable among 2WD mode, AUTO mode, and
LOCK mode by operating the 4WD mode switch while the engine is
running.

JSDIA6389ZZ

STRUCTURE AND OPERATION

DLN-17

< SYSTEM DESCRIPTION >

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STRUCTURE AND OPERATION

Sectional View

INFOID:0000000010991958

Operation Description

INFOID:0000000010991959

POWER TRANSFER DIAGRAM

Transfer cover

Transfer case

Ring gear bearing (transfer case 
side)

Ring gear shaft

Pinion bearing

Drive pinion

Companion flange

Ring gear

Ring gear bearing (transfer cover 
side)

JSDIA3966ZZ

DLN-18

< SYSTEM DESCRIPTION >

[TRANSFER: TY21C]

STRUCTURE AND OPERATION

ELECTRIC CONTROLLED COUPLING

1.

The 4WD control unit supplies command current to electric con-
trolled coupling (4WD solenoid).

2.

The control clutch is engaged by electromagnet and torque is
detected in control clutch.

3.

The cam operates in response to control clutch torque and
applies pressure to main clutch.

4.

The main clutch transmits torque to front wheels according to
pressing power.

• Transmission torque to the rear wheels is determined accord-

ing to command current.

Engine

Transaxle

Transfer

Propeller shaft

Electric controlled coupling

Rear final drive

JSDIA0961ZZ

JSDIA0972GB

SDIA1844E