Infiniti QX56 (Z62). Manual — part 454
DLN-16
< SYSTEM DESCRIPTION >
[TRANSFER: ATX90A]
STRUCTURE AND OPERATION
1.
Transfer control unit supplies command current to transfer motor.
2.
Transfer motor operates and actuator shaft rotates clockwise.
3.
Shift fork operates according to rotation of actuator shaft. Sun gear and Hi-Lo sleeve are engaged.
4.
Ball ramp lever operates in axial direction via cam fixed on actuator shaft according to traction torque of
transfer motor, presses piston, and thrusts multiple plate clutch.
5.
Torque is transmitted to front wheels according to thrusting pressure of multiple plate clutch.
NOTE:
Torque transmitted to the front wheel is determined according to the command current.
4L MODE
1.
Main shaft
2.
Ball lamp lever
3.
Piston
4.
Clutch
5.
Hi-Lo sleeve
6.
Sun gear
7.
Shift fork
8.
Actuator shaft
9.
Transfer control actuator
JPDIE0278GB
STRUCTURE AND OPERATION
DLN-17
< SYSTEM DESCRIPTION >
[TRANSFER: ATX90A]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
1.
Transfer control unit supplies command current to transfer motor.
2.
Transfer motor operates and actuator shaft rotates counterclockwise.
3.
Shift fork operates according to rotation of actuator shaft. Planetary carrier assembly and Hi-Lo sleeve are
engaged.
1.
Main shaft
2.
Sprocket
3.
Lock sleeve
4.
Hi-Lo sleeve
5.
Sun gear
6.
Planetary carrier assembly
7.
Internal gear
8.
Shift fork
9.
Actuator shaft
10. Transfer control actuator
JPDIE0279ZZ
DLN-18
< SYSTEM DESCRIPTION >
[TRANSFER: ATX90A]
SYSTEM
SYSTEM
4WD SYSTEM
4WD SYSTEM : System Description
INFOID:0000000006222224
• In AUTO mode, distribution of traction force is controlled from 2WD status (0:100) to 4WD status (50:50)
according to signal from each sensor and switch.
• In accordance with fail-safe function, when system is malfunctioning, 4WD warning lamp on combination
meter turns ON and 4WD control stops. For fail-safe function, refer to
DLN-20, "4WD SYSTEM : Fail-Safe"
• When a high load status continues for transfer assembly (transfer control actuator or transfer fluid), 4WD
control temporarily becomes 4H or 2WD status, according to protection function.
NOTE:
4WD system is not malfunctioning.
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL
It transmits/receives each signal from the following transfer control unit via CAN communication line.
JPDIE0272GB
Component parts
Control signal
ABS actuator and electric unit (control unit)
Transmits the following signals via CAN communication line to transfer control unit.
• Vehicle speed signal (ABS)
• Stop lamp switch signal (brake signal)
• ABS operation signal
• VDC operation signal
• TCS operation signal
ECM
Transmits the following signals via CAN communication line to transfer control unit.
• Accelerator pedal position signal
• Engine speed signal
• Engine torque signal
SYSTEM
DLN-19
< SYSTEM DESCRIPTION >
[TRANSFER: ATX90A]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
4WD SHIFT SWITCH AND 4WD SHIFT INDICATOR LAMP
*1: Blinking 2 times/1 second
*2: “4HI” and “4LO” blink alternately.
CONDITION FOR TURN ON THE WARNING LAMP
TCM
Transmits the following signals via CAN communication line to transfer control unit.
• Shift position signal
• Gear position signal
• Output shaft revolution signal
Steering angle sensor
Transmits the following signals via CAN communication line to transfer control unit.
• Steering angle sensor signal
Combination meter
Receives the following signals via CAN communication line from transfer control unit.
• 4WD warning lamp signal
• ATP warning lamp signal
• 4WD mode indicator signal
Component parts
Control signal
4WD shift switch
4WD shift indicator lamp (in Information display)
4WD shift procedure
AUTO
1.
Start the engine.
2.
Turn the 4WD shift switch.
NOTE:
Mode can be switched between AU-
TO
⇔
4H while driving straight.
4H
↓↑
4WD status: 4H
⇔
4L
(Blinking)
*1*2
1.
Start the engine.
2.
Never drive the vehicle.
3.
Shift A/T shift selector to N position.
4.
Press and rotate 4WD shift switch
while depressing brake pedal.
CAUTION:
4WD mode does not switch when 4WD
shift switch is operated while the vehi-
cle is running or A/T shift selector is
shifted to any position other than neu-
tral.
4L
JPDIE0230ZZ
JPDIE0234ZZ
JPDIE0231ZZ
JPDIE0235ZZ
JPDIE0231ZZ
JPDIE0233ZZ
JPDIE0236ZZ
JPDIE0233ZZ
JPDIE0237ZZ
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