System Description (4WD Models)

• All the vehicles are equipped with an drive mode select switch switches a vehicle mode among SAND, MUD/RUT, SNOW, AUTO, ECO, SPORT, and TOW with the flick of a switch.
• The drive mode selector changes the vehicle mode of the power train, combination meter, chassis function, 4WD function, and driver assistant system.

SYSTEM DIAGRAM 

Courtesy of NISSAN

Component		Signal description
BCM		Mainly transmits the following signals to chassis control module via CAN communication. Drive mode switch signal
ECM		Mainly receives the following signals from chassis control module via CAN communication. Drive mode signal
ABS actuator and electric unit (control unit)		Mainly receives the following signals from chassis control module via CAN communication. Drive mode signal
Combination meter		Mainly receives the following signals from chassis control module via CAN communication. Drive mode signal
Power steering control module		Mainly receives the following signals from chassis control module via CAN communication. Drive mode signal
ADAS control unit 2		Mainly receives the following signals from chassis control module via CAN communication. Drive mode signal
4WD control unit		Mainly receives the following signals from chassis control module via CAN communication. Drive mode signal

CONTROL DESCRIPTION 

• The drive mode selector switches a vehicle mode with the flick of a switch (drive mode select switch) mounted on upper part of the center console and changes the control characteristics of the power train, combination meter, chassis function, driver assistant system, 4WD function.
• When the ignition switch is ON from the OFF state, the drive mode select switch starts in AUTO mode regardless of drive mode during ignition switch ON.
• The vehicle characteristics are controlled from the AUTO mode to any mode listed below:

  SAND	This mode allows for easier driving or starting on sand.
  MUD/RUT	This mode allows for easier driving or starting on a bumpy road surface such as an uneven dirt road or a steep uphill slope.
  SNOW	This mode makes it easier to start and run from snowy roads and frozen roads.
  ECO	Assists the driver's eco-driving. The engine points are adjusted for improved fuel economy, providing such a driving features as smooth starting or constant cruising.
  SPORT	Adjusts the engine points for a higher response. The setting of the steering system is adjusted to moderately increase steering wheel effort for a sporty feel.
  TOW	The mode controls the shifting points to facilitate the acceleration and deceleration while towing.

• For relationship between drive mode and each control item, refer to the following table.

  x: Change from AUTO

  Items	Drivemode						Control
  	SAND	MUD/RUT	SNOW	ECO	SPORT	TOW
  Engine	x	x	x	x	x		Change characteristic of throttle opening, and engine torque control
  Combination meter	x	x	x	x	x	x	Displays the selected drive mode and mode as pop up.
  Steering					x		Controls mode and response of steering
  Intelligent trace control	x	x			x	x	Controls intelligent trace control
  VDC function		x					Controls braking force
  4WD system	x	x	x				Controls drive torque distribution
  Driver assistance function	x	x	x				Controls ADAS function

ENGINE CHARACTERISTICS 

• The engine output characteristics when a mode is switched with the drive mode select switch is as follows.

  Drive mode select switch	Engine output
  AUTO	Normal
  SAND	Accelerator opening characteristics is more aggressive.
  MUD/RUT	Accelerator opening characteristics is more aggressive.
  SNOW	Accelerator opening characteristics is more passive.
  ECO	Accelerator opening characteristics is more passive.
  SPORT	Accelerator opening characteristics is more aggressive.
  TOW*	Normal

  *: The stop/start system is not activated.

COMBINATION METER CHARACTERISTICS 

• The combination meter characteristics when a mode is switched with the drive mode select switch is as follows.

  Drive mode select switch	Combination meter status
  AUTO	Displays the selected drive mode.
  SAND
  MUD/RUT
  SNOW
  ECO
  SPORT
  TOW

STEERING CHARACTERISTICS 

• The steering characteristics when a mode is switched with the drive mode select switch is as follows.

  Drive mode select switch	Steering status
  AUTO	Normal
  SAND	Normal
  MUD/RUT	Normal
  SNOW	Normal
  ECO	Normal
  SPORT	Heavy
  TOW	Normal

INTELLIGENT TRACE CONTROL CHARACTERISTICS 

• The intelligent trace control characteristics when a mode is switched with the drive mode select switch is as follows.

  Drive mode select switch	Intelligent trace control status
  AUTO	Normal
  SAND	OFF
  MUD/RUT	OFF
  SNOW	Normal
  ECO	Normal
  SPORT	OFF
  TOW	OFF

VDC FUNCTION CHARACTERISTICS 

• The VDC function characteristics when a mode is switched with the drive mode select switch is as follows.

  Drive mode select switch	VDC function status
  AUTO	Normal
  SAND	Normal
  MUD/RUT	Quicker BLSD Pressure Build
  SNOW	Normal
  ECO	Normal
  SPORT	Normal
  TOW	Normal

4WD SYSTEM CHARACTERISTICS 

• The 4WD system characteristics when a mode is switched with the drive mode select switch is as follows.

  Drive mode select switch	4WD system status
  AUTO	Normal
  SAND	The optimal driving torque is distributed according to the driving mode selected.
  MUD/RUT	The optimal driving torque is distributed according to the driving mode selected.
  SNOW	The optimal driving torque is distributed according to the driving mode selected.
  ECO	Normal
  SPORT	Normal
  TOW	Normal

DRIVER ASSISTANCE CHARACTERISTICS 

• The Driver assistance function characteristics when a mode is switched with the drive mode select switch is as follows.

  Drive mode select switch	Driver assistance status
  AUTO	Normal
  SAND	ICC: OFF ProPILOT: OFF I-LI: OFF BLIND SPOT INTERVENTION: OFF
  MUD/RUT	ICC: OFF ProPILOT: OFF I-LI: OFF BLIND SPOT INTERVENTION: OFF
  SNOW	ICC: OFF ProPILOT: OFF I-LI: OFF BLIND SPOT INTERVENTION: OFF
  ECO	Normal
  SPORT	Normal
  TOW	Normal