2009 INFINITI QX56 keyless

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Page 415 of 4171

INFINITI QX56 2009 Factory Service Manual
BCS
BCM (BODY CONTROL MODULE)BCS-41
< ECU DIAGNOSIS > [BCM]
C
D
E
F
G H
I
J
K L
B A
O P
N
Te r m i n a l
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform

Page 416 of 4171

INFINITI QX56 2009 Factory Service Manual
BCS-42
< ECU DIAGNOSIS >[BCM]
BCM (BODY CONTROL MODULE)
19 V/WRemote keyless entry
receiver (power sup-
ply) Output OFF Ignition switch OFF
20 G/W Remote keyless entry
receiver (signal) Input OFFSt

Page 774 of 4171

INFINITI QX56 2009 Factory Service Manual DEF-6
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)INFOID:0000000004223690
APPLICATION ITEM
CONSULT-III perfor

Page 788 of 4171

INFINITI QX56 2009 Factory Service Manual DEF-20
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
Te r m i n a lWire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or c

Page 789 of 4171

INFINITI QX56 2009 Factory Service Manual BCM (BODY CONTROL MODULE)DEF-21
< ECU DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
DEF
N
O P
19 V/W Remote keyless entry
receiver (power sup-
ply) Output OFF Ignition switch OFF
20 G/W Remote keyless entry
re

Page 815 of 4171

INFINITI QX56 2009 Factory Service Manual DLK-3
C
DE
F
G H
I
J
L
M A
B
DLK
N
O P
PASSENGER SIDE : Diagnosis Procedure ........
....
87
REAR LH ............................................................... ....88
REAR LH : Description ....

DLK-3
C
DE
F
G H
I
J
L
M A
B
DLK
N
O P
PASSENGER SIDE : Diagnosis Procedure ........
....
87
REAR LH ............................................................... ....88
REAR LH : Description ............................................88
REAR LH : Component Function Check ...............88
REAR LH : Diagnosis Procedure ............................88
REAR RH ............................................................... ....89
REAR RH : Description ...........................................89
REAR RH : Component Function Check ...............90
REAR RH : Diagnosis Procedure ............................90
BACK DOOR ......................................................... ....91
BACK DOOR : Description ......................................91
GLASS HATCH LOCK ACTUATOR ..................92
Diagnosis Procedure ...............................................92
PASSENGER SELECT UNLOCK RELAY .........93
Description .......................................................... ....93
Component Function Check ....................................93
Diagnosis Procedure ...............................................93
INTELLIGENT KEY WARNING BUZZER ..........95
Description .......................................................... ....95
Component Function Check ..................................95
Diagnosis Procedure ...............................................95
Component Inspection ............................................96
OUTSIDE KEY ANTENNA .................................97
Description .......................................................... ....97
Component Function Check ..................................97
Diagnosis Procedure ...............................................97
STEERING LOCK UNIT .....................................99
Diagnosis Procedure ........................................... ....99
A/T SHIFT SELECTOR (PARK POSITION
SWITCH) ...........................................................
101
Diagnosis Procedure ........................................... ..101
REMOTE KEYLESS ENTRY RECEIVER ........103
Description .......................................................... ..103
Component Function Check ................................103
Diagnosis Procedure .............................................103
INTELLIGENT KEY BATTERY AND FUNC-
TION .................................................................
106
Description .......................................................... ..106
Component Function Check ................................106
Diagnosis Procedure .............................................106
HORN FUNCTION ............................................108
Description .......................................................... ..108
Component Function Check ................................108
Diagnosis Procedure ............................................108
COMBINATION METER DISPLAY FUNC-
TION .................................................................
110
Description .......................................................... ..110
Component Function Check ................................110
Diagnosis Procedure .............................................110
WARNING CHIME FUNCTION .......................111
Description ........................................................... ..111
Component Function Check ................................111
Diagnosis Procedure .............................................111
HAZARD FUNCTION ......................................112
Description .............................................................112
Component Function Check ................................112
Diagnosis Procedure .............................................112
KEY SWITCH (INTELLIGENT KEY UNIT IN-
PUT) ................................................................
113
Diagnosis Procedure .............................................113
KEY SWITCH (BCM INPUT) ...........................115
Diagnosis Procedure .............................................115
IGNITION KNOB SWITCH ..............................116
Ignition Knob Switch Check ...................................116
HEADLAMP FUNCTION .................................118
Diagnosis Procedure .............................................118
MAP LAMP AND IGNITION KEYHOLE ILLU-
MINATION FUNCTION ...................................
119
Diagnosis Procedure .............................................119
KEYFOB ID SET UP WITH CONSULT-III ......120
ID Code Entry Procedure ......................................120
KEYFOB ID SET UP WITHOUT CONSULT-III .121
ID Code Entry Procedure .................................... ..121
AUTOMATIC BACK DOOR SELF-DIAGNO-
SIS PROCEDURE ...........................................
123
Self-Diagnosis Procedure ......................................123
POWER LIFTGATE SWITCH FUNCTION ......125
Diagnosis Procedure ........................................... ..125
GLASS HATCH SWITCH ................................127
Diagnosis Procedure .............................................127
GLASS HATCH AJAR SWITCH .....................129
Diagnosis Procedure .............................................129
BACK DOOR CLOSE (CLOSE) SWITCH
SYSTEM ..........................................................
131
Diagnosis Procedure ........................................... ..131
BACK DOOR CLOSE (CANCEL) SWITCH
SYSTEM ..........................................................
132
Diagnosis Procedure ........................................... ..132
PINCH STRIP SYSTEM ..................................133
Diagnosis Procedure .............................................133
BACK DOOR WARNING CHIME SYSTEM ....134
Diagnosis Procedure .............................................134
HALF-LATCH SWITCH SYSTEM ...................135
Diagnosis Procedure .............................................135
Revision: December 20092009 QX56

Page 828 of 4171

INFINITI QX56 2009 Factory Service Manual DLK-16
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK FUNCTION
DOOR REQUEST SWITCH
DOOR REQUEST SWITCH : System DiagramINFOID:0000000003775679
DOOR REQUEST SWITCH : System DescriptionIN

DLK-16
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK FUNCTION
DOOR REQUEST SWITCH
DOOR REQUEST SWITCH : System DiagramINFOID:0000000003775679
DOOR REQUEST SWITCH : System DescriptionINFOID:0000000003775680
Only when pressing the request switch, it is possible
to lock and unlock the door by carrying the Intelligent
Key.
• The Intelligent Key system is a system that makes it possible to lock and unlock the door locks (door lock/
unlock function) by carrying the Intelligent Key, which operates based on the results of electronic ID verifica-
tion using two-way communications between the Intelligent Key and the vehicle (BCM).
CAUTION:
The driver should always carry the Intelligent Key
• If an action that does not meet the operating conditions of the Intelligent Key system is taken, the buzzer
goes off to inform the driver (Warning chime function).
• When a door lock is locked or unlocked with request switch or remote controller button operation, the hazard
lamps flash and the Intelligent Key warning buzzer or horn sounds (Hazard and buzzer/horn reminder func-
tion).
• The settings for each function can be changed with the CONSULT-III.
• If an Intelligent Key is lost, a new Intelligent Key can be registered. A maximum of 4 Intelligent Keys can be
registered.
• It is possible to perform a diagnosis on the system and register an Intelligent Key with the CONSULT-III.
OPERATION DESCRIPTION/DOOR LOCK/UNLOCK
• When the BCM detects that each door request switch is pressed, it starts the outside key antenna and inside
key antenna corresponding to the pressed door request swit ch and transmits the request signal to the Intelli-
gent Key. And then, check that t he Intelligent Key is near the door.
• If the Intelligent Key is within the outside key ant enna detection area, it receives the request signal and
transmits the key ID signal to the BCM via remote keyless entry receiver.
• BCM receives the key ID signal and compares it with the registered key ID.
• BCM sends the door lock/unlock signal and sounds Intelli gent Key buzzer warning (lock: 2 times, unlock: 1
time) at the same time as a reminder.
OPERATION CONDITION
If the following conditions are not satisfied, door lock/unlock operation is not performed even if the request
switch is operated.
Door switch Transmits door open/close condition to BCM.
Passenger select unlock relay Enables or disables the unlocking of rear doors when this Intelligent Key option is selected. Item
Function
ALKIA0704GB
Revision: December 20092009 QX56

Page 830 of 4171

INFINITI QX56 2009 Factory Service Manual DLK-18
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK FUNCTION
When all doors are locked, ignition switch is in OFF
position and key switch is OFF, doors are unlocked with
door request

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