Nissan X-Trail 32. Instruction — part 680
4WD CONTROL UNIT
DLN-131
< ECU DIAGNOSIS INFORMATION >
[TRANSFER: TY30A]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
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
On
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
On
4WD WARN LAMP
4WD warning (on information display): Displayed
On
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
On
Parking brake not operated
Off
4WD MODE SW (2WD)
4WD mode switch: 2WD
On
4WD mode switch: Except 2WD
Off
4WD MODE SW (AUTO)
4WD mode switch: AUTO
On
4WD mode switch: Except AUTO
Off
4WD MODE SW (LOCK)
4WD mode switch: LOCK
(State of hold of LOCK position)
On
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
< ECU DIAGNOSIS INFORMATION >
[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
1
(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
2
(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
< ECU DIAGNOSIS INFORMATION >
[TRANSFER: TY30A]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
*: 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.
5
(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
7
(LA/R)
Ground
Ignition switch
Input
Ignition switch: ON
Battery voltage
Ignition switch: OFF
0 V
8
(L)
—
CAN-H
Input/
Output
—
—
9
(LA/G)
Ground
Power supply (4WD so-
lenoid)
Input
Always
Battery voltage
10
(B)
Ground
Ground
—
Always
0 V
11
(B)
Ground
Ground
—
Always
0 V
12
(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
14
(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
15
(LA/L)
Ground
Power supply (4WD
control unit)
Input
Always
Battery voltage
16
(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
< ECU DIAGNOSIS INFORMATION >
[TRANSFER: TY30A]
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
Rear final drive assembly in protection mode. It is not malfunction.
(Internal temperature rise of electronic controlled coupling)
Shuts down 4WD sys-
tem temporarily
(Front wheel drive)
—
Malfunction in each tire or different tire diameter
Priority
Detected items (DTC)
1
• C1201 CONTROLLER FAILURE
2
• U1000 CAN COMM CIRCUIT
• U1010 CONTROL UNIT (CAN)
3
• C1203 ABS SYSTEM
• C1210 ENGINE SIGNAL 1
• P1808 VHCL SPEED SEN-ABS
• P181D ENGINE SYSTEM
4
• P1809 CONTROL UNIT
5
• C1204 4WD SOLENOID
• P1811 BATTERY VOLTAGE
6
• C1209 MODE SW
7
• P1804 CONTROL UNIT
8
• P181B INCOMP SELFSHUT
• P181F INCOMP CALIBRATION
DTC
Display Item
Reference
C1201
CONTROLLER FAILURE
C1203
ABS SYSTEM
C1204
4WD SOLENOID
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