Nissan X-Trail 32. Manual - part 653

SYSTEM

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< SYSTEM DESCRIPTION >

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SYSTEM DIAGRAM

SIGNAL PATH

• The 4WD control unit judges and decides a mode from among normal mode, fail-safe mode, and protection

function mode, according to signals received from each switch, sensor, and control unit.

• The 4WD control unit transmits 4WD warning signal to the combination meter via CAN communication when

judging fail-safe mode or protection function mode.

• The combination meter displays 4WD warning on the information display when receiving 4WD warning sig-

nal transmitted from the 4WD control unit.

WARNING CONDITION

4WD warning is displayed when the 4WD system goes into fail-safe mode or protection function mode.

WARNING CANCEL CONDITION

When any of the conditions listed below is satisfied:
• Ignition switch is in a position other than ON.
• 4WD warning becomes invisible when the 4WD system returns to normal.

INFORMATION DISPLAY (COMBINATION METER) : 4WD Torque Distribution Indica-
tor

INFOID:0000000010991966

DESIGN/PURPOSE

WARNING/INDICATOR/CHIME LIST

WARNING/INDICATOR/CHIME LIST : Warning Lamp/Indicator Lamp

INFOID:0000000010991967

JSDIA6028GB

Design

Purpose

Displays the drive torque distribution to the front and rear wheels while driving and informs 
the driver of this.
NOTE:
The driving force distribution may not match actual one. This is not a system malfunction.

JSNIA6722ZZ

Name

Design

Layout/Function

4WD indicator lamp

For layout: Refer to 

MWI-10, "METER SYSTEM : Design"

.

For function: Refer to 

MWI-23, "WARNING LAMPS/INDICATOR LAMPS : 4WD Indica-

tor Lamp and LOCK Indicator Lamp"

.

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SYSTEM

WARNING/INDICATOR/CHIME LIST : Warning/Indicator (On Information Display)

INFOID:0000000010991968

LOCK indicator lamp

For layout: Refer to 

MWI-10, "METER SYSTEM : Design"

.

For function: Refer to 

MWI-23, "WARNING LAMPS/INDICATOR LAMPS : 4WD Indica-

tor Lamp and LOCK Indicator Lamp"

.

Name

Design

Layout/Function

Name

Function

4WD warning

Refer to 

DLN-22, "INFORMATION DISPLAY (COMBINATION METER) : 4WD Warn-

ing"

.

4WD torque distribution indicator

Refer to 

DLN-23, "INFORMATION DISPLAY (COMBINATION METER) : 4WD Torque 

Distribution Indicator"

.

DIAGNOSIS SYSTEM (4WD CONTROL UNIT)

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DIAGNOSIS SYSTEM (4WD CONTROL UNIT)

CONSULT Function

INFOID:0000000010991969

APPLICATION ITEMS

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

*: The following diagnosis information is erased by erasing.
• DTC
• Freeze frame data (FFD)

ECU IDENTIFICATION

4WD control unit part number can be read.

SELF DIAGNOSTIC RESULT

Refer to 

DLN-30, "DTC Index"

.

When “PRSNT” is displayed on self-diagnosis result.

• The system is presently malfunctioning.

When “PAST” is displayed on self-diagnosis result.

• System malfunction in the past is detected, but the system is presently normal.

FREEZE FRAME DATA (FFD)

The following vehicle status is recorded when DTC is detected and is displayed.

Diagnostic test mode

Function

ECU Identification

4WD control unit part number can be read.

Self Diagnostic Result

Self-diagnostic results and freeze frame data can be read and erased quickly.*

Data Monitor

Input/Output data in the 4WD control unit can be read.

Active Test

Diagnostic Test Mode in which CONSULT drives some actuators apart from the 4WD control unit 
and also shifts some parameters in a specified range.

Work support

This mode enable a technician to adjust some devices faster and more accurately by following the 
indication on the CONSULT.

Monitor item (Unit)

Remarks

ODO/TRIP METER (km/h or mph)

Odometer value via CAN communication line is displayed.

ABS OPERATION SIG (On/Off)

ABS operation status via CAN communication line is displayed.

VDC OPERATION SIG (On/Off)

VDC operation status via CAN communication line is displayed.

TCS OPERATION SIG (On/Off)

TCS operation status via CAN communication line is displayed.

HI COEF FRIC FLG 1 (LOW/HIGH)

Measured friction of load is displayed when vehicle starts.

HI COEF FRIC FLG 2 (LOW/HIGH)

Measured friction of load is displayed when vehicle during deceleration.

IGN VOLT (V)

Ignition voltage supplied to 4WD control unit is displayed.

TARGET SOL CRNT (A)

4WD solenoid target current is displayed.

SOLENOID CRNT (A)

4WD solenoid control current is displayed.

QUASI VEHICLE SPEED (km/h or mph)

Vehicle speed calculated by 4WD control unit is displayed.

FRONT WHEEL SPEED (km/h or mph)

Front wheel speed average calculated by 4WD control unit is displayed.

REAR WHEEL SPEED (km/h or mph)

Rear wheel speed average calculated by 4WD control unit is displayed.

SLCT LVR POSI

Current transmission gear via CAN communication line is displayed.

OPERATION MODE

Control status of 4WD mode is displayed.

FRONT RH WHEEL SPEED (km/h or mph)

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

FRONT LH WHEEL SPEED (km/h or mph)

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

REAR RH WHEEL SPEED (km/h or mph)

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

REAR LH WHEEL SPEED (km/h or mph)

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

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DIAGNOSIS SYSTEM (4WD CONTROL UNIT)

DATA MONITOR

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

ACTIVE TEST

Use this mode to determine and identify the details of a malfunction based on self-diagnostic results or data
monitor. 4WD control unit gives drive signal to actuator with receiving command from CONSULT to check
operation of actuator.

CAUTION:

Never energize continuously for a long time.

WORK SUPPORT

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 4WD actuator relay (integrated in 4WD control unit) is displayed.

4WD WARN LAMP (On/Off)

Control status of 4WD warning (on information display) is displayed.

4WD MODE SW (AUTO/LOCK/2WD)

4WD mode switch status is displayed.

4WD MODE MON (AUTO/LOCK/2WD)

Control status of 4WD is displayed.

DIS-TIRE MONI (mm)

Improper size tire installed condition is displayed.

PARKING BRAKE SW SIG (On/Off)

Parking switch signal status via CAN communication line is displayed.

4WD MODE SW (2WD) (On/Off)

4WD mode switch (2WD position) signal is displayed.

4WD MODE SW (AUTO) (On/Off)

4WD mode switch (AUTO position) signal is displayed.

4WD MODE SW (LOCK) (On/Off)

4WD mode switch (LOCK position) signal is displayed.

READY (Off/Running)

This item is not equipped, but displayed.

BATTERY VOLT (V)

Power supply voltage value of 4WD control unit is displayed.

THRTL POS SEN (%)

Throttle opening status is displayed.

ETS SOLENOID (A)

Monitored value of current at 4WD solenoid is displayed.

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.

Test item

Condition

Description

SOLENOID
(Detects 4WD solenoid)

• Vehicle stopped
• Engine running
• No DTC detected

Change command current value to 4WD solenoid, and then change driving 
mode. (Monitor value is normal if it is within approx. 

±

10% of command value.)

• Qu: Increase current value in increments of 0.2 A
• Qd: Decrease current value in increments of 0.2 A
• UP: Increase current value in increments of 0.02 A
• DOWN: Decrease current value in increments of 0.02 A

Item

Usage

UNIT CHARACTERISTICS DATA

Display the unit characteristics of electric controlled coupling written to 4WD control unit.

UNIT CHARACTERISTICS WRITE

Writes the unit characteristics of electric controlled coupling to 4WD control unit.