Infiniti QX56 (Z62). Manual — part 391
DLK-30
< SYSTEM DESCRIPTION >
SYSTEM (INTELLIGENT KEY SYSTEM)
LIST OF OPERATION RELATED PARTS
Parts marked with
×
are the parts related to operation.
Intelligent Key low battery warning
—
—
—
Key ID verification information
—
—
—
Warning/Information functions
“KEY”
warning
lamp
Information display
(combination meter)
Warning chime
Combination
meter buzzer
Intelligent Key
warning buzzer
JMKIA3049ZZ
JMKIA4907ZZ
Warning function
In
tel
lig
en
t K
e
y
Ig
ni
tio
n
switch
Doo
r swi
tch
Do
or re
qu
es
t s
w
it
c
h
In
si
de ke
y an
ten
na
Out
s
id
e ke
y ant
en
na
In
tel
lig
en
t Ke
y
warn
ing
b
u
zze
r
Com
b
inat
io
n m
e
te
r b
u
z
z
e
r
CAN communication
system
BC
M
In
form
a
tio
n d
ispl
a
y
“KEY” w
a
rni
n
g
lamp
Intelligent Key system malfunction
×
×
×
OFF position warning
For internal
×
×
×
×
For external
×
×
×
P position warning
×
×
×
×
×
×
ACC warning
×
×
×
×
×
Take away warning
Door is open or close
×
×
×
×
×
×
×
×
×
Door is open
×
×
×
×
×
×
×
Push-button ignition switch
operation
×
×
×
×
×
×
×
×
Door lock operation warning
×
×
×
×
×
×
×
Key ID warning
×
×
×
×
×
×
Engine start information
Ignition switch is ON position
×
×
×
×
×
×
Ignition switch is except ON
position
×
×
×
×
×
×
Steering lock information
×
×
×
×
Intelligent Key low battery warning
×
×
×
×
×
×
Key ID verification information
×
×
×
×
×
SYSTEM (AUTOMATIC BACK DOOR SYSTEM)
DLK-31
< SYSTEM DESCRIPTION >
C
D
E
F
G
H
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L
M
A
B
DLK
N
O
P
SYSTEM (AUTOMATIC BACK DOOR SYSTEM)
System Diagram
INFOID:0000000006225852
System Description
INFOID:0000000006225853
The automatic back door system performs the automatic open/close operation of the back door by operating
the automatic back door switch, the automatic back door close switch, the back door opener switch, and Intel-
ligent Key.
AUTOMATIC BACK DOOR OPEN/CLOSE FUNCTION
• In the case of the back door fully closed, operate the automatic back door switch, Intelligent Key or back
door opener switch with the back door unlock. The back door closure motor releases the latch, then the
automatic back door motor opens the back door to the fully open position. Reverse the closure motor to the
neutral position simultaneously.
• In the case of the back door fully open, operate the automatic back door switch, Intelligent Key or automatic
back door close switch. The automatic back door motor closes the back door to the half-latch position, then
the back door closure motor to the full latch position. Then, reverse the closure motor to the neutral position.
BACK DOOR AUTO CLOSURE FUNCTION
JMKIA5198GB
DLK-32
< SYSTEM DESCRIPTION >
SYSTEM (AUTOMATIC BACK DOOR SYSTEM)
Open Function
When back door opener switch is pressed and automatic back door main switch in the OFF position, BCM
transmits the back door open request signal to automatic back door control unit via CAN communication, and
automatic back door control unit opens back door lock assembly.
Closure Function
When the back door is closed to the half-latch position, the motor drives to rotate the latch lever and pulls it in
from half latched to fully latched and automatically closes the door. Then, reverse the closure motor to the
neutral position.
WARNING FUNCTION
The warning function is as follows and gives the user warning information and warnings using automatic back
door buzzer and hazard.
Buzzer Operation Condition
ANTI-PINCH FUNCTION
During auto operation, if an object is detected by encoder pulse in the door's path, a warning chime sounds
and the back door operates in the reverse direction to prevent pinching.
During auto close operation, if an object is detected by the touch sensors in the door's path, a warning chime
sounds and the back door operates in the open direction until it is fully open.
Operation Condition
Pattern
Time
Description
A
0.75 sec.
Operation start announcement
Anti-pinch operation start announcement
B
Pi---
2.0 sec.
During the closure operation, the touch
sensor detects any trapped foreign materi-
al and stops halfway
C
Pi------••••••
Back door fully closed or vehi-
cle is stopped
The conditions are not satisfied in the fully
open position or during the operation, and
then the operation continues
D
During open/close operation
During operation announcement
JMKIA1862ZZ
JMKIA1863ZZ
Detection method
Encoder pulse
Touch sensor
Applicable operation
Open/close operation
Close operation
Operation when
any trapped for-
eign material is de-
tected
Stop the vehicle
Buzzer sounds (pattern A)
and reverse operation
• Buzzer sounds (pattern A) and the back door stops in
the fully-open position after reverse operation
• During closure (close) operation (at main switch OFF):
Closure [open (neutral position return)] operation
Running the ve-
hicle
No reverse operation (buzzer
sounds, pattern C)
• The back door reverses a certain amount, and then it
reverses automatically to perform the auto close oper-
ation
• During closure (close) operation (at main switch ON):
Closure (open) operation
SYSTEM (AUTOMATIC BACK DOOR SYSTEM)
DLK-33
< SYSTEM DESCRIPTION >
C
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DLK
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INTERMITTENT CLUTCH FUNCTION
If the main switch is turned to OFF during auto operation, the back door may be closed suddenly because the
operation is interrupted immediately when the operation cannot be continued because of the detection of a
system malfunction. Therefore, operate the clutch intermittently to stabilize the back door behavior and ensure
safety.
AUTOMATIC BACK DOOR OPEN/CLOSE OPERATION CONDITION
*: If the registered Intelligent Key is used, the operation can be performed even if the back door is in the LOCK position
CONTROL IF NOT WITHIN THE OPERATION CONDITIONS DURING THE OPERATION
If the back door is not within the operation conditions during the operation, the automatic back door control unit
performs the control as follows.
Non-reverse area
• Just after starting the mo-
tor operation
• Full range of closure oper-
ation
• Driving
• Back door open operation
• Closure [open (return the latch to the neutral position)]
Switch operation during reverse op-
eration
Receive
Number of allowable reverse opera-
tions
Perform the intermittent clutch function after 2 reverse operations regardless of the oper-
ation direction
Detection method
Encoder pulse
Touch sensor
Automatic back door switch
Intelligent Key
Automat-
ic back
door close
switch
Back door opener
switch
Operating direction
Fully closed
→
Open
Fully open
→
Closed
Fully
closed
→
Open
Fully open
→
Closed
Fully open
→
Closed
Fully closed
→
Open
Main switch
—
—
—
—
ON
ON
Ignition position
ON
ACC/
LOCK
—
—
—
ON
ACC/
LOCK
Shift selector lever
P position
—
—
—
—
—
P position
—
Vehicle speed
0 km/h
Back door lock condition
—
—
—
—
—
Unlock*
Touch sensor
Normal
Power supply
(Automatic power back
door control unit)
Approx. 11 V or more
Item
(Condition)
Back door condition
Main Switch (ON
→
OFF)
• Motor: OFF
• Clutch: OFF (Intermittent clutch function)
Vehicle stop condition (open operation)
• IGN ON and shift P position
→
IGN ON and
other than P position
• IGN OFF and shift N position
→
IGN ON and
N position
The operation is continued
Operation condition release during the opera-
tion start announcement condition
Automatic back door function does not operate
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