Nissan Murano. Manual - part 442

 

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Nissan Murano. Manual - part 442

 

 

AWD SYSTEM

DLN-7

< SYSTEM DESCRIPTION >

[TRANSFER: TY20A]

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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

DLN-8

< SYSTEM DESCRIPTION >

[TRANSFER: TY20A]

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

INFOID:0000000009718075

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

DLN-9

< SYSTEM DESCRIPTION >

[TRANSFER: TY20A]

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Component Description

INFOID:0000000009718076

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-25, "Description"

AWD LOCK indicator lamp

DLN-27, "Description"

AWD lock switch

DLN-23, "Description"

ABS actuator and electric unit (control unit)

DLN-13, "Description"

ECM

DLN-18, "Description"

Combination meter

DLN-27, "Description"

Steering angle sensor

BRC-68, "Description"

DLN-10

< SYSTEM DESCRIPTION >

[TRANSFER: TY20A]

DIAGNOSIS SYSTEM (AWD CONTROL UNIT)

DIAGNOSIS SYSTEM (AWD CONTROL UNIT)

CONSULT Function

INFOID:0000000009718077

FUNCTION

CONSULT can display each diagnostic item using the diagnostic test modes as follows.

ECU IDENTIFICATION

AWD control unit part number can be read.

SELF -DIAGNOSTIC RESULT

Before performing the self-diagnosis, start the engine and drive vehicle at 30 km/h (19 MPH) or more for
approximately 1 minute.

Display Item List

Refer to 

DLN-36, "DTC Index"

.

How to Erase Self-Diagnostic Results

Before erasing DTC memory, start the engine and drive at 30 km/h (19 MPH) or more for approximately 1
minute. Check that ABS warning lamp turns OFF.
NOTE:
When AWD warning lamp is ON with system malfunction of DTC “C1203”, run the vehicle at 30 km/h (19
MPH) or more for a minute and check that ABS warning lamp is turned OFF. Then turn ignition switch OFF,
and start the engine again. Otherwise AWD warning lamp may not turned OFF even if it is normal.

DATA MONITOR

Display Item List

NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.

Diagnostic test mode

Function

ECU Identification

AWD control unit part number can be read.

Self Diagnostic Result

Self-diagnostic results can be read and erased quickly.

Data Monitor

Input/Output data in the AWD control unit can be read.

Active Test

Diagnostic Test Mode in which CONSULT drives some actuators apart from the AWD control unit 
and also shifts some parameters in a specified range.

Monitor item (Unit)

Remarks

STOP LAMP SW [On/Off]

Stop lamp switch signal status via CAN communication line is displayed.

ENG SPEED SIG [Run/Stop]

Engine status is displayed.

ETS ACTUATOR [On/Off]

Operating condition of AWD actuator relay (integrated in AWD control unit) is displayed.

4WD WARN LAMP [On/Off]

Control status of AWD warning lamp is displayed.

4WD MODE SW [AUTO/LOCK]

AWD lock switch status is displayed.

4WD MODE MON [AUTO/LOCK]

Control status of AWD is displayed.

DIS-TIRE MONI [mm]

Improper size tire installed condition is displayed.

P BRAKE SW [On/Off]

Parking switch signal status via CAN communication line is displayed.

BATTERY VOLT [V]

Power supply voltage for AWD control unit

THRTL POS SEN [%]

Throttle opening status is displayed.

ETS SOLENOID [A]

Monitored value of current at AWD solenoid

FR RH SENSOR [km/h] or [mph]

Wheel speed calculated by front RH wheel sensor signal is displayed.

FR LH SENSOR [km/h] or [mph]

Wheel speed calculated by front LH wheel sensor signal is displayed.

RR RH SENSOR [km/h] or [mph]

Wheel speed calculated by rear RH wheel sensor signal is displayed.

RR LH SENSOR [km/h] or [mph]

Wheel speed calculated by rear LH wheel sensor signal is displayed.

 

 

 

 

 

 

 

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