Nissan Murano Z51. Manual - part 468

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AWD SYSTEM

System Description

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DESCRIPTION

• AWD controls distribution of drive power between front-wheel drive (100:0) and 4-wheel drive (50:50) condi-

tions according to signals from sensors.

• By receiving the steering angle sensor signal, yaw rate sensor signal, side G sensor signal and decel G sen-

sor signal, vehicle with VDC corrects a torque distribution for front and rear wheels according to a driving
operation and a behavior of the vehicle during cornering and improves drivability and safety on a slippery
road surface.

• It transmits/receives each signal from the following AWD control unit via CAN communication line.

1.

Adapter case

2.

Transfer case

3.

Gear ring bearing (Transfer case side)

4.

Pinion front bearing

5.

Pinion sleeve

6.

Drive pinion

7.

Companion flange

8.

Pinion rear bearing

9.

Drive gear

10. Gear ring bearing (Adapter case side)

JPDIE0015ZZ

Component parts

Function

ABS actuator and electric unit (control unit)

Transmits the following signals via CAN communication to AWD control unit.
• Vehicle speed signal
• Stop lamp switch signal (brake signal)
• Yaw rate sensor signal
• Side G sensor signal
• Decel G sensor signal

ECM

Transmits the following signals via CAN communication to AWD control unit.
• Accelerator pedal position signal
• Engine speed signal

AWD SYSTEM

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AUTO Mode

• Electronic control allows optimal distribution of torque to front/rear wheels to match road conditions.
• AWD mode makes possible stable driving possible with no wheel spin, on snowy roads or other slippery sur-

faces.

• On roads which do not require 4-wheel drive, AUTO mode contributes to improved fuel economy by driving

in conditions close to front-wheel drive.

• Sensor inputs determine the vehicle's turning condition, and tight cornering/braking are controlled by distrib-

uting optimum torque to rear wheels.

NOTE:
Light tight-corner braking symptom may occur depending on driving condition in AUTO mode. This is not mal-
function.

LOCK Mode 

• Front/rear wheel torque distribution is fixed, ensuring stable driving when climbing slopes.
• Vehicle will switch automatically to AUTO mode if vehicle speed increases. If vehicle speed then decreases,

the vehicle automatically returns to direct 4-wheel driving conditions. The AWD LOCK indicator lamp keeps
illuminating.

• LOCK mode will change to AUTO mode automatically, when the vehicle has been driven at a high speed.

The AWD LOCK indicator lamp turns off.

• LOCK mode will change to AUTO mode automatically, when the ignition switch is turned “OFF”.
NOTE:
• Every time AWD LOCK switch is pressed, AUTO mode and LOCK mode switch each other. 
• If there is a significant difference in pressure or wear between tires, full vehicle performance is not available.

Tire conditions are detected, and LOCK mode may be prohibited, or else speeds at which LOCK mode is
enabled may be restricted.

• Heavy tight-corner braking symptom occurs when vehicle is driven in the following conditions: LOCK mode,

steering wheel is turned fully to either sides, and accelerator pedal is depressed.

CAUTION:

Never switch to LOCK when rotation speed of front and rear wheel differs.

POWER TRANSFER DIAGRAM

OPERATION PRINCIPLE

Electric Controlled Coupling

Combination meter

Transmits conditions of parking brake switch signal via CAN communication to AWD con-
trol unit.

Receives the following signals via CAN communication from AWD control unit.
• AWD warning lamp signal
• AWD LOCK indicator lamp signal

Steering angle sensor

Transmits conditions of steering angle sensor signal via CAN communication to AWD 
control unit.

Component parts

Function

SDIA1607E

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< SYSTEM DESCRIPTION >

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AWD SYSTEM

1.

The AWD control unit supplies command current to electric con-
trolled coupling (AWD 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.

Component Parts Location

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SDIA2035E

SDIA1844E

1.

AWD LOCK indicator lamp

2.

AWD warning lamp

3.

AWD lock switch

4.

AWD control unit

5.

AWD solenoid (in rear final drive)

A.

Combination meter

B.

Center console (Front side)

C.

Instrument driver lower cover removed

D.

Rear final drive assembly

JPDIE0052ZZ

AWD SYSTEM

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Component Description

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Component parts

Reference/Function

AWD control unit

DLN-12, "Description"

Wheel sensors

BRC-33, "Description"

AWD solenoid

DLN-14, "Description"

Electric controlled coupling

Transmits driving force to rear final drive.

AWD warning lamp

DLN-24, "Description"

AWD LOCK indicator lamp

DLN-26, "Description"

AWD lock switch

DLN-22, "Description"

ABS actuator and electric unit (control unit)

DLN-13, "Description"

ECM

DLN-17, "Description"

Combination meter

DLN-26, "Description"

Steering angle sensor

BRC-62, "Description"