2010 INFINITI QX56 remote control

BCS-14
< FUNCTION DIAGNOSIS >[BCM]
POWER CONSUMPTION CONTROL SYSTEM
Sleep condition
Wake-up operation
• BCM transmits sleep wake up signal (wake up) to each unit when any condition listed below is established,
and then goes into normal mode from low power consumption mode.
• Each unit starts transmissions with CAN communication by receiving sleep wake up signals. Each unit trans- mits wake up signals to BCM with CAN communication to convey the start of CAN communication.
Wake-up condition
CAN sleep condition BCM sleep condition
• Receiving the sleep-ready signal (ready) from all units
• Ignition switch: OFF
• Vehicle security system alarm: No operation
• Warning lamp: No operation
• Warning chime: No operation
• Stop lamp switch: OFF
• Key switch status: No change for 2 seconds
• Hazard warning lamp: No operation
•Exterior lamp: OFF
• Door lock status: No change for 2 seconds
• CONSULT-III communication status: No communication
• Door switch status: No change for 2 seconds The controls only BCM are completed.
(Interior room lamp battery saver: Time out etc.)
BCM wake-up condition
• Ignition switch: OFF → ACC or ON
• Stop lamp switch: ON (Depress brake pedal)
• Any door switch: OFF → ON
• Lighting switch: OFF → 1ST or PASS
• Hazard switch: OFF → ON
• Back door opener switch OFF → ON
• Remote keyless entry receiver: Receiving
• Intelligent Key unit: Receiving
Revision: April 20092010 QX56

BCS-20
< FUNCTION DIAGNOSIS >[BCM]
DIAGNOSIS SYSTEM (BCM)
ACTIVE TEST
MULTIREMOTE ENT
MULTIREMOTE ENT : CONSULT-III Function (BCM - MULTIREMOTE ENT)
INFOID:0000000005146400
WORK SUPPORT
Hazard and horn reminder mode
CDL LOCK SW [ON/OFF]
Lock switch status input from door lock and unlock switch
CDL UNLOCK SW [ON/OFF] Unlock switch status input from door lock and unlock switch
I-KEY LOCK [ON/OFF] Lock signal status received from Intelligent Key unit by CAN communication
I-KEY UNLOCK [ON/OFF] Unlock signal status received from Intelligen t Key unit by CAN communication
Monitor Item
[Unit] Description
Test Item
Operation Description
IGN ILLUM ON
Outputs the ignition keyhole illumination control signal to turn the ignition keyhole il-
lumination lamp ON.
OFF Stops the ignition keyhole illumination control signal to turn the ignition keyhole illu-
mination lamp OFF.
INT LAMP ON Outputs the interior room lamp control signal to turn the interior room lamps ON.
OFF Stops the interior room lamp control signal to turn the interior room lamps OFF.
STEP LAMP TEST ON Outputs the step lamp control signal to turn the step lamps ON.
OFF Stops the step lamp control signal to turn the step lamps OFF.
LUGGAGE LAMP TEST ON Outputs the luggage lamp control signal to turn the luggage lamp ON.
OFF Stops the luggage lamp control signal to turn the luggage lamp OFF.
Te s t I t e m D e s c r i p t i o n
REMO CONT ID REGIST Keyfob ID code can be registered.
REMO CONT ID ERASUR Keyfob ID code can be erased.
REMO CONT ID CONFIR It can be checked whether keyfob ID code is registered or not in this mode.
HORN CHIRP SET Horn chirp function mode can be changed in this mode. The function mode will be changed when
"CHANG SETT" on CONSULT- III screen is touched.
HAZARD LAMP SET Hazard lamp function mode can be changed in this mode. The function mode will be changed when
"CHANG SETT" on CONSULT- III screen is touched.
MULTI ANSWER BACK SET Hazard and horn reminder mode can be changed in this mode. The reminder mode will be changed
when “CHANG SETT” on CONSULT-III screen is touched.
AUTO LOCK SET Auto locking function mode can be changed in this mode. The function mode will be changed when
"CHANG SETT" on CONSULT-
III screen is touched.
PANIC ALRM SET Panic alarm operation mode can be changed in this mode. The operation mode will be changed when
"CHANG SETT" on CONSULT-
III screen is touched.
PW DOWN SET Keyless power window down (open) operation mode can be changed in this mode. The operation
mode will be changed when "CHANG SETT" on CONSULT-III screen is touched.
MODE 1
(C mode) MODE 2
(S mode) MODE 3MODE 4MODE 5MODE 6
Keyfob
operation Lock Unlock Lock Unlock Lock Unlock Lock Unlock Lock Unlock Lock Unlock
Hazard warning
lamp flash TwiceOnceTwice — — — TwiceOnceTwice — — Once
Horn sound Once———————Once—Once—
Revision: April 20092010 QX56

BCS-44
< ECU DIAGNOSIS >[BCM]
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 condition
1BR/W Ignition keyhole illumi-
nation Output OFFDoor is locked (SW OFF)
Battery voltage
Door is unlocked (SW ON) 0V
2SB Combination switch
input 5 Input ON
Lighting, turn, wiper OFF
Wiper dial position 4
3G/Y Combination switch
input 4 Input ONLighting, turn, wiper OFF
Wiper dial position 4
4Y Combination switch
input 3 Input ON
Lighting, turn, wiper OFF
Wiper dial position 4
5G/B Combination switch
input 2
Input ONLighting, turn, wiper OFF
Wiper dial position 4
6V Combination switch
input 1
9GR/R Rear window defogger
switch
Input ONRear window defogger switch
ON
0V
Rear window defogger switch
OFF 5V
10 G Hazard lamp flash Input OFF ON (opening or closing)
0V
OFF (other than above) Battery voltage
11 O Ignition switch (ACC
or ON)
InputACC or
ON Ignition switch ACC or ON
Battery voltage
12 R/L Front door switch RH Input OFF ON (open)
0V
OFF (closed) Battery voltage
13 GR Rear door switch RH Input OFF ON (open)
0V
OFF (closed) Battery voltage
15 L/W Tire pressure warning
check connector
Input OFF
—5V
18 P Remote keyless entry
receiver and optical
sensor (ground)
Output OFF
—0V
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
Revision: April 20092010 QX56

BCS
BCM (BODY CONTROL MODULE)BCS-45
< ECU DIAGNOSIS > [BCM]
C
D
E
F
G H
I
J
K L
B A
O P
N19 V/W
Remote keyless entry
receiver (power sup-
ply) Output OFF Ignition switch OFF
20 G/W Remote keyless entry
receiver (signal) Input OFFStand-by (keyfob buttons re-
leased)
When remote keyless entry
receiver receives signal from
keyfob (keyfob buttons
pressed)
21 G NATS antenna amp. Input OFF
→
ON Ignition switch (OFF → ON) Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
22 W/V BUS — —Ignition switch ON or power
window timer operates
23 G/O Security indicator
lamp Output OFF
Goes OFF
→ illuminates (Ev-
ery 2.4 seconds) Battery voltage
→ 0V
25 BR NATS antenna amp. Input OFF
→
ON Ignition switch (OFF → ON) Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
26 Y/L Rear wiper auto stop
switch 2 Input ONRise up position (rear wiper
arm on stopper)
0V
A Position (full clockwise stop
position) 0V
Forward sweep (counterclock-
wise direction) Fluctuating
B Position (full counterclock-
wise stop position) Battery voltage
Reverse sweep (clockwise di-
rection) Fluctuating
27 W/R Compressor ON sig-
nal Input ONA/C switch OFF
5V
A/C switch ON 0V
Te r m i n a l
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
LIIA1893E
LIIA1894E
LIIA1895E
PIIA2344E
Revision: April 20092010 QX56

DEF-22
< 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 condition
1BR/W Ignition keyhole illumi-
nation Output OFFDoor is locked (SW OFF)
Battery voltage
Door is unlocked (SW ON) 0V
2SB Combination switch
input 5 Input ON
Lighting, turn, wiper OFF
Wiper dial position 4
3G/Y Combination switch
input 4 Input ONLighting, turn, wiper OFF
Wiper dial position 4
4Y Combination switch
input 3 Input ON
Lighting, turn, wiper OFF
Wiper dial position 4
5G/B Combination switch
input 2
Input ONLighting, turn, wiper OFF
Wiper dial position 4
6V Combination switch
input 1
9GR/R Rear window defogger
switch
Input ONRear window defogger switch
ON
0V
Rear window defogger switch
OFF 5V
10 G Hazard lamp flash Input OFF ON (opening or closing)
0V
OFF (other than above) Battery voltage
11 O Ignition switch (ACC
or ON)
InputACC or
ON Ignition switch ACC or ON
Battery voltage
12 R/L Front door switch RH Input OFF ON (open)
0V
OFF (closed) Battery voltage
13 GR Rear door switch RH Input OFF ON (open)
0V
OFF (closed) Battery voltage
15 L/W Tire pressure warning
check connector
Input OFF
—5V
18 P Remote keyless entry
receiver and optical
sensor (ground)
Output OFF
—0V
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
Revision: April 20092010 QX56

BCM (BODY CONTROL MODULE)DEF-23
< 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
receiver (signal) Input OFFStand-by (keyfob buttons re-
leased)
When remote keyless entry
receiver receives signal from
keyfob (keyfob buttons
pressed)
21 G NATS antenna amp. Input OFF
→
ON Ignition switch (OFF → ON) Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
22 W/V BUS — —Ignition switch ON or power
window timer operates
23 G/O Security indicator
lamp Output OFF
Goes OFF
→ illuminates (Ev-
ery 2.4 seconds) Battery voltage
→ 0V
25 BR NATS antenna amp. Input OFF
→
ON Ignition switch (OFF → ON) Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
26 Y/L Rear wiper auto stop
switch 2 Input ONRise up position (rear wiper
arm on stopper)
0V
A Position (full clockwise stop
position) 0V
Forward sweep (counterclock-
wise direction) Fluctuating
B Position (full counterclock-
wise stop position) Battery voltage
Reverse sweep (clockwise di-
rection) Fluctuating
27 W/R Compressor ON sig-
nal Input ONA/C switch OFF
5V
A/C switch ON 0V
Te r m i n a l
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
LIIA1893E
LIIA1894E
LIIA1895E
PIIA2344E
Revision: April 20092010 QX56

DLK-2
System Diagram .....................................................47
System Description .................................................47
Component Parts Location ...................................48
Component Description .........................................50
HOMELINK UNIVERSAL TRANSCEIVER ........51
Component Description ....................................... ...51
DIAGNOSIS SYSTEM (BCM) ............................52
COMMON ITEM ..................................................... ...52
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) ................................................. ...
52
DOOR LOCK .......................................................... ...52
DOOR LOCK : CONSULT-III Function (BCM -
DOOR LOCK) .........................................................
53
MULTIREMOTE ENT ............................................. ...53
MULTIREMOTE ENT : CONSULT-III Function
(BCM - MULTIREMOTE ENT) ................................
53
INTELLIGENT KEY ................................................ ...55
INTELLIGENT KEY : CONSULT-III Function
(BCM - INTELLIGENT KEY) ...................................
55
DIAGNOSIS SYSTEM (INTELLIGENT KEY
UNIT) ............................................................... ...
56
CONSULT-III Function (INTELLIGENT KEY) ...... ...56
COMPONENT DIAGNOSIS ........................58
U1000 CAN COMM CIRCUIT ......................... ...58
Description ........................................................... ...58
DTC Logic ...............................................................58
Diagnosis Procedure ..............................................58
U1010 CONTROL UNIT (CAN) .........................59
DTC Logic ............................................................ ...59
Diagnosis Procedure ..............................................59
Special Repair Requirement ...................................59
CENTER CONSOLE AREA ANTENNA
(REAR) ............................................................ ...
60
Description ........................................................... ...60
Component Function Check .................................60
Diagnosis Procedure ..............................................60
LUGGAGE AREA ANTENNA ...........................62
Description ..............................................................62
Component Function Check .................................62
Diagnosis Procedure ..............................................62
CENTER CONSOLE AREA ANTENNA
(FRONT) .............................................................
64
Description ........................................................... ...64
Component Function Check .................................64
Diagnosis Procedure ..............................................64
OVERHEAD CONSOLE AREA ANTENNA ......66
Description ........................................................... ...66
Component Function Check .................................66
Diagnosis Procedure ............................................ ...66
POWER SUPPLY AND GROUND CIRCUIT .....68
INTELLIGENT KEY UNIT ....................................... ...68
INTELLIGENT KEY UNIT : Diagnosis Procedure ...68
BCM (BODY CONTROL MODULE) ..........................68
BCM (BODY CONTROL MODULE) : Diagnosis
Procedure ...............................................................
68
BACK DOOR CONTROL UNIT .............................. ...69
BACK DOOR CONTROL UNIT : Diagnosis Proce-
dure ...................................................................... ...
69
DOOR SWITCH .................................................71
Description ........................................................... ...71
Component Function Check ..................................71
Diagnosis Procedure ...............................................71
DOOR LOCK AND UNLOCK SWITCH .............74
DRIVER SIDE ......................................................... ...74
DRIVER SIDE : Description ....................................74
DRIVER SIDE : Component Function Check ........74
DRIVER SIDE : Diagnosis Procedure .....................74
PASSENGER SIDE ...................................................76
PASSENGER SIDE : Descripti on ...........................76
PASSENGER SIDE :
Component Function Check ............................... ...
76
PASSENGER SIDE : Diagnosis Procedure ............76
KEY CYLINDER SWITCH .................................79
Description ........................................................... ...79
Component Function Check ...................................79
Diagnosis Procedure ...............................................79
FRONT DOOR LOCK ACTUATOR LH (DOOR
UNLOCK SENSOR) ..........................................
81
Description ........................................................... ...81
Component Function Check ..................................81
Diagnosis Procedure ...............................................81
Component Inspection ............................................82
DOOR REQUEST SWITCH ...............................83
Description ..............................................................83
Component Function Check ..................................83
Diagnosis Procedure ...............................................83
Component Inspection ............................................85
DOOR LOCK ACTUATOR ................................86
DRIVER SIDE ......................................................... ...86
DRIVER SIDE : Description ....................................86
DRIVER SIDE : Component Function Check ........86
DRIVER SIDE : Diagnosis Procedure .....................86
PASSENGER SIDE ...................................................87
PASSENGER SIDE : Descripti on ...........................87
PASSENGER SIDE :
Component Function Check ............................... ...
87
PASSENGER SIDE : Diagnosis Procedure ............87
Revision: April 20092010 QX56

DLK-16
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK FUNCTION
DOOR REQUEST SWITCH
DOOR REQUEST SWITCH : System DiagramINFOID:0000000005146875
DOOR REQUEST SWITCH : System DescriptionINFOID:0000000005146876
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: April 20092010 QX56