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Nissan X-Trail 32. Manual - part 680

4WD CONTROL UNIT

DLN-131

< ECU DIAGNOSIS INFORMATION >

[TRANSFER: TY30A]

DLN

ECU DIAGNOSIS INFORMATION

4WD CONTROL UNIT

Reference Value

INFOID:0000000011003985

VALUES ON THE DIAGNOSIS TOOL

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

Monitor item

Condition

Value/Status

STOP LAMP SW

Brake pedal: Depressed

Brake pedal: Released

Off

ENG SPEED SIG

Engine stopped
(Engine speed: Less than 400 rpm)

Stop

Engine running
(Engine speed: 400 rpm or more)

Run

ETS ACTUATOR

Engine stopped (Ignition switch: ON)

Off

Engine running

4WD WARN LAMP

4WD warning (on information display): Displayed

4WD warning (on information display): Not displayed

Off

4WD MODE SW

4WD mode switch: 2WD

2WD

4WD mode switch: AUTO

AUTO

4WD mode switch: LOCK
(State of hold of LOCK position)

LOCK

4WD MODE MON

4WD mode switch: 2WD

2WD

4WD mode switch: AUTO

AUTO

4WD mode switch: AUTO

⇒

LOCK

(When switching to LOCK mode)

Vehicle speed below 10 km/h (6 mph)

AUTO

⇒

LOCK

Vehicle speed above 10 km/h (6 mph)

AUTO

4WD mode switch: LOCK

⇒

AUTO

(When switching to AUTO mode)

Vehicle speed below 10 km/h (6 mph)

LOCK

⇒

AUTO

DIS-TIRE MONI

Vehicle running with normal size tire installed

0 – 4 mm

Vehicle running with improper size tire installed (Front/rear tire size differ-
ence, wear condition)

4 – 8 mm, 8 – mm

PARKING BRAKE SW
SIG

Parking brake operated

Parking brake not operated

Off

4WD MODE SW (2WD)

4WD mode switch: 2WD

4WD mode switch: Except 2WD

Off

4WD MODE SW (AUTO)

4WD mode switch: AUTO

4WD mode switch: Except AUTO

Off

4WD MODE SW (LOCK)

4WD mode switch: LOCK
(State of hold of LOCK position)

4WD mode switch: Except LOCK

Off

READY

Always

Off

BATTERY VOLT

Always

Battery voltage

THRTL POS SEN

When depressing accelerator pedal
(Value rises gradually in response to throttle position.)

0 – 100%

DLN-132

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[TRANSFER: TY30A]

4WD CONTROL UNIT

*: The values are changed by throttle opening and engine speed.

TERMINAL LAYOUT

PHYSICAL VALUES

ETS SOLENOID

Engine running
• At idle speed

2WD mode

Approx. 0.000 A

AUTO mode

Approx. 0.000 A

LOCK mode

Approx. 0.000 A

Engine running
• 3,000 rpm or more constant

2WD mode

Approx. 0.000 A

AUTO mode

Approx. 0.000 – 2.490 A*

LOCK mode

Approx. 2.490 A

FR RH SENSOR

Vehicle stopped

0.00 km/h (0.00 mph)

Vehicle running

CAUTION:

Check air pressure of tire under standard condition.

Nearly matches the speed
meter display (

10% or

less)

FR LH SENSOR

Vehicle stopped

0.00 km/h (0.00 mph)

Vehicle running

CAUTION:

Check air pressure of tire under standard condition.

Nearly matches the speed
meter display (

10% or

less)

RR RH SENSOR

Vehicle stopped

0.00 km/h (0.00 mph)

Vehicle running

CAUTION:

Check air pressure of tire under standard condition.

Nearly matches the speed
meter display (

10% or

less)

RR LH SENSOR

Vehicle stopped

0.00 km/h (0.00 mph)

Vehicle running

CAUTION:

Check air pressure of tire under standard condition.

Nearly matches the speed
meter display (

10%)

Monitor item

Condition

Value/Status

JSDIA0057ZZ

Terminal No.

(Wire color)

Description

Condition

Value (Approx.)

Signal name

Input/

Output

(SB)

Ground

4WD solenoid power
supply

Output

Engine speed: At idle

2WD mode

0 V

AUTO mode

0 V

LOCK mode

0 V

Engine speed: 3,000
rpm or more constant

2WD mode

0 V

AUTO mode

2.5 V*

LOCK mode

8 V

(Y)

Ground

4WD solenoid ground

Input

Engine speed: At idle

0 V

Engine speed: 3,000 rpm or more constant

0 V

4WD CONTROL UNIT

DLN-133

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DLN

*: The values are changed by depressed accelerator pedal opening and engine speed.

CAUTION:

When using circuit tester to measure voltage for inspection, be sure not to extend forcibly any con-
nector terminals.

Fail-Safe

INFOID:0000000011003986

If any malfunction occurs in 4WD electrical system, and control unit detects the malfunction, 4WD warning on
information display (combination meter) is displayed to indicate system malfunction. And then 4WD control
unit controls becomes the fail-safe mode depending on DTC.

(V)

Ground

4WD mode switch (AU-
TO)

Input

Ignition switch: ON

4WD mode switch: 2WD

Battery voltage

4WD mode switch: AUTO

0 V

4WD mode switch: LOCK
(State of hold of LOCK position)

0 V

(LA/R)

Ground

Ignition switch

Input

Ignition switch: ON

Battery voltage

Ignition switch: OFF

0 V

(L)

—

CAN-H

Input/

Output

—

(LA/G)

Ground

Power supply (4WD so-
lenoid)

Input

Always

Battery voltage

(B)

Ground

—

Always

0 V

(B)

Ground

—

Always

0 V

(GR)

Ground

4WD mode switch
(2WD)

Input

Ignition switch: ON

4WD mode switch: 2WD

0 V

4WD mode switch: AUTO

Battery voltage

4WD mode switch: LOCK
(State of hold of LOCK position)

Battery voltage

(Y)

Ground

4WD mode switch
(LOCK)

Input

Ignition switch: ON

4WD mode switch: 2WD

Battery voltage

4WD mode switch: AUTO

Battery voltage

4WD mode switch: LOCK
(State of hold of LOCK position)

0 V

(LA/L)

Ground

Power supply (4WD
control unit)

Input

Always

Battery voltage

(P)

—

CAN-L

Input/

Output

—

Terminal No.

(Wire color)

Description

Condition

Value (Approx.)

Signal name

Input/

Output

DTC

Vehicle condition

•C1201
•C1204
•C1209
•P1804
•P1809

•P1811

•P181F

4WD control changes to front-wheel drive immediately, then 4WD control stops, and the vehicle
becomes front-wheel drive.

DLN-134

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4WD CONTROL UNIT

Protection Function

INFOID:0000000011003987

4WD system activates its protection function (shuts down 4WD system temporarily) if 4WD system detects
high load continuously or the front wheel tire size differs from the rear tire size. (4WD system is automatically
restored if 4WD system no longer detects any overload or the tire size difference is eliminated.)

NOTE:
• If the 4WD warning displays during driving but remains not displayed after the engine is restarted, the sys-

tem is normal. If it again displays after driving for some time, vehicle must be inspected.

• When there is a difference of revolution speed between the front and rear wheel the shift occasionally

changes to direct 4-wheel driving conditions automatically. This is not a malfunction.

DTC Inspection Priority Chart

INFOID:0000000011003988

If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.

DTC Index

INFOID:0000000011003989

•C1203
•C1210
•P1808

•P181D

•U1000
•U1010

4WD control changes to front-wheel drive gradually (rear-wheels still have some driving torque),
then 4WD control stops, and the vehicle becomes front-wheel drive.

•P181B

No impact to vehicle behavior.

DTC

Vehicle condition

DTC

4WD warning (on infor-

mation display)

Error area and root cause

Contents of protection

function

—

Refer to