Nissan Murano: System Description / Component Parts. Driveline System

Nissan Murano (Z52) 2015-2024 Service Manual / Transmission & Driveline / Driveline :: Transfer: Ty21c / System Description / Component Parts. Driveline System

Component Parts Location

Inside storage room

Rear final drive

No.	Component	Function
1.	Steering angle sensor	Mainly transmits the following signal to AWD control unit via CAN communication: Steering angle sensor signal Refer to Component Parts Location for detailed component location.
2.	Combination meter [AWD (All-Wheel Drive) warning icon/display]	Mainly transmits the following signal to AWD control unit via CAN communication: Parking brake switch signal Mainly receives the following signal from AWD control unit via CAN communication: AWD warning icon/display signal Refer to Component Parts Location for detailed component location.
3.	ABS (Anti-lock Braking System) actuator and electric unit (control unit)	Mainly transmits the following signals to AWD control unit via CAN communication: Nissan Murano Vehicle speed signal Stop lamp switch signal (brake signal) Yaw rate sensor signal Side G sensor signal Decel G sensor signal Refer to Component Parts Location for detailed component location.
4.	ECM (Engine Control Module)	Mainly transmits the following signals to AWD control unit via CAN communication: Accelerator pedal position signal Engine speed signal Refer to Component Parts Location for detailed component location.
5.	TCM (Transmission Control Module)	Mainly transmits the following signals to AWD control unit via CAN communication: Input shaft revolutional signal CVT ratio signal Refer to Component Parts Location for detailed component location.
6.	AWD control unit	Refer to AWD Control Unit.
7.	Electric controlled coupling	Refer to Electric Controlled Coupling.
8.	AWD solenoid	Refer to AWD Solenoid.

AWD Control Unit

The AWD control unit is located behind the back door kicking plate.
Controls driving force distribution by signals from each sensor from front wheel driving mode (100:0) to 4-wheel driving mode (50:50).
Front wheel driving conditions is available by fail-safe function if malfunction is detected in AWD system.
AWD actuator relay is integrated with AWD control unit, and supplies AWD solenoid with voltage.

AWD Solenoid

Controls electric controlled coupling by command current from AWD control unit.

Electric Controlled Coupling

Electric controlled coupling (1) is integrated with rear final drive and transmits driving force to rear final drive. For operation, refer to Operation Description.

AWD Warning Icon/Display

AWD warning icon/display is displayed when there is a malfunction in AWD system. AWD warning icon/display indicates the Nissan Murano vehicle is in fail-safe mode and shifting to front-wheel drive or 4-wheel drive (rear-wheels still have some driving torque).

AWD WARNING ICON/DISPLAY INDICATION

Condition	AWD warning icon/display
AWD system malfunction
Protection function is activated due to heavy load to electric controlled coupling. (AWD system is not malfunctioning and AWD system changes to front wheel drive.) When this message is displayed, refer to Description.	(Displaying for approximately 1 minute and then turned OFF)
Large difference in diameter of front/rear tires When this message is displayed, refer to Diagnosis Procedure.	(Continuing to display until ignition switch OFF)
Other than above (system normal)	OFF

CAUTION:

AWD warning icon/display is displayed due to data reception error, CAN communication error etc.

System Description

Structure and Operation

Sectional View 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) Operation Description POWER TRANSFER DIAGRAMELECTRIC CONTROLLED COUPLING The AWD control unit supplies command current to electric controlled coupling (AWD solenoid)...

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