2008 INFINITI QX56 key fob battery

BCM (BODY CONTROL MODULE)ADP-145
< ECU DIAGNOSIS >
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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: March 2010
2008 QX56

BCS
DIAGNOSIS SYSTEM (BCM)BCS-21
< FUNCTION DIAGNOSIS > [BCM]
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NACTIVE TEST
HEADLAMP
HEADLAMP : CONSULT-III Func
tion (BCM - HEAD LAMP)INFOID:0000000001696419
WORK SUPPORT
*: Initial setting
DATA MONITOR
CDL LOCK SW Indicates [ON/OFF] condition of lock signal from lock/unlock switch.
DOOR SW-RL Indicates [ON/OFF] condition of rear door switch LH.
DOOR SW-RR Indicates [ON/OFF] condition of rear door switch RH.
RKE LCK-UNLCK Indicates [ON/OFF] condition of lock/unlock signal at the same time from keyfob.
RKE KEEP UNLK Indicates [ON/OFF] condition of unlock signal from keyfob.
Monitored Item
Description
Test ItemDescription
FLASHER This test is able to check right and left hazard reminder operation. The right hazard lamp turns on
when “RH” on CONSULT-III screen is touched and th e left hazard lamp turns on when "LH" on CON-
SULT-III screen is touched.
POWER WINDOW DOWN This test is able to check power window down operation. The windows are lowered when “ON” on CONSULT-III screen is touched.
HORN This test is able to check panic alarm and horn reminder operations. The alarm activate for 0.5 sec-
onds after “ON” on CONSULT-III screen is touched.
DOOR LOCK This test is able to check door lock operation. The doors lock and unlock based on the item on CON-
SULT-III screen touched.
Work Item Setting item Setting
BATTERY SAVER SET ON* With the exterior lamp battery saver function
OFF Without the exterior lamp battery saver function
CUSTOM A/LIGHT SET-
TING MODE1* Normal
MODE2 More sensitive setting than normal setting (Turns ON earlier than normal operation.)
MODE3 More sensitive setting than MODE 2 (Turns ON earlier than MODE 2.)
MODE4 Less sensitive setting than normal setting (Turns ON later than normal operation.)
ILL DELAY SET MODE1* 45 sec.
Sets delay timer function timer operation time
(All doors closed)
MODE2
Without the func-
tion
MODE3 30 sec.
MODE4 60 sec.
MODE5 90 sec.
MODE6 120 sec.
MODE7 150 sec.
MODE8 180 sec.
Monitor Item [Unit] Description
IGN ON SW [ON/OFF] Ignition switch (ON) status judged from IGN signal (ignition power supply)
Revision: March 2010 2008 QX56

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 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: March 2010
2008 QX56

DLK-3
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REAR LH : Diagnosis Procedure ........................
....
84
REAR RH ............................................................... ....85
REAR RH : Description ...........................................85
REAR RH : Component Function Check ...............86
REAR RH : Diagnosis Procedure ............................86
BACK DOOR ......................................................... ....87
BACK DOOR : Description ......................................87
GLASS HATCH LOCK ACTUATOR ..................88
Diagnosis Procedure ...............................................88
PASSENGER SELECT UNLOCK RELAY .........89
Description .......................................................... ....89
Component Function Check ....................................89
Diagnosis Procedure ...............................................89
INTELLIGENT KEY WARNING BUZZER ..........91
Description .......................................................... ....91
Component Function Check ..................................91
Diagnosis Procedure ...............................................91
Component Inspection ............................................92
OUTSIDE KEY ANTENNA .................................93
Description .......................................................... ....93
Component Function Check ..................................93
Diagnosis Procedure ...............................................93
STEERING LOCK UNIT .....................................95
Diagnosis Procedure ........................................... ....95
A/T SHIFT SELECTOR (PARK POSITION
SWITCH) .............................................................
97
Diagnosis Procedure ........................................... ....97
REMOTE KEYLESS ENTRY RECEIVER ..........99
Description .......................................................... ....99
Component Function Check ..................................99
Diagnosis Procedure ...............................................99
INTELLIGENT KEY BATTERY AND FUNC-
TION .................................................................
102
Description .......................................................... ..102
Component Function Check ................................102
Diagnosis Procedure .............................................102
Component Inspection ..........................................102
Special Repair Requirement .................................103
HORN FUNCTION .......................................... ..104
Description .......................................................... ..104
Component Function Check ................................104
Diagnosis Procedure ............................................104
COMBINATION METER DISPLAY FUNC-
TION .................................................................
106
Description .......................................................... ..106
Component Function Check ................................106
Diagnosis Procedure .............................................106
WARNING CHIME FUNCTION ........................107
Description .......................................................... ..107
Component Function Check .............................. ..107
Diagnosis Procedure .............................................107
HAZARD FUNCTION ......................................108
Description .............................................................108
Component Function Check ................................108
Diagnosis Procedure .............................................108
KEY SWITCH (INTELLIGENT KEY UNIT IN-
PUT) ................................................................
109
Diagnosis Procedure .............................................109
KEY SWITCH (BCM INPUT) ...........................111
Diagnosis Procedure .............................................111
IGNITION KNOB SWITCH ..............................112
Ignition Knob Switch Check ...................................112
HEADLAMP FUNCTION .................................114
Diagnosis Procedure .............................................114
MAP LAMP AND IGNITION KEYHOLE ILLU-
MINATION FUNCTION ...................................
115
Diagnosis Procedure .............................................115
KEYFOB ID SET UP WITH CONSULT-III ......116
ID Code Entry Procedure ......................................116
KEYFOB ID SET UP WITHOUT CONSULT-III .117
ID Code Entry Procedure .................................... ..117
AUTOMATIC BACK DOOR SELF-DIAGNO-
SIS PROCEDURE ...........................................
119
Self-Diagnosis Procedure ......................................119
POWER LIFTGATE SWITCH FUNCTION ......121
Diagnosis Procedure ........................................... ..121
GLASS HATCH SWITCH ................................123
Diagnosis Procedure .............................................123
GLASS HATCH AJAR SWITCH .....................125
Diagnosis Procedure .............................................125
BACK DOOR CLOSE (CLOSE) SWITCH
SYSTEM ..........................................................
127
Diagnosis Procedure ........................................... ..127
BACK DOOR CLOSE (CANCEL) SWITCH
SYSTEM ..........................................................
128
Diagnosis Procedure ........................................... ..128
PINCH STRIP SYSTEM ..................................129
Diagnosis Procedure .............................................129
BACK DOOR WARNING CHIME SYSTEM ....130
Diagnosis Procedure .............................................130
HALF-LATCH SWITCH SYSTEM ...................131
Diagnosis Procedure .............................................131
BACK DOOR OPEN SWITCH SYSTEM ........132
Diagnosis Procedure .............................................132
Revision: March 2010 2008 QX56

BACK DOOR OPENER FUNCTIONDLK-23
< FUNCTION DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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BACK DOOR OPENER FUNCTION
BACK DOOR OPENER SWITCH
BACK DOOR OPENER SWITCH : System DiagramINFOID:0000000001538918
BACK DOOR OPENER SWITCH : System DescriptionINFOID:0000000001538919
BACK DOOR OPENER OPERATION
NOTE:
The automatic back door system must be initialized by fully closing the back door anytime the battery
power is lost to the back door control unit. Refer to DLK-9, "
ADDITIONAL SERVICE WHEN REMOVING
BATTERY NEGATIVE TERMINAL : Description".
The automatic back door system consists of a one piec e unit that combines the back door control unit along
with the back door motor, back door clutch and the ba ck door encoder. The back door latch contains a lock
function that can control the two functions of autom atic back door latch closure and electrical opener with a
single motor when you close the back door to the halfway-state.
• Back door auto closure When the back door is closed to the halfway state (half- latch) position, the motor automatically drives to
rotate the latch lever and pull it in from half latched to full latched.
• Power back door With the back door closed, if you press the power liftgat e switch or press the keyfob button, or pull the back
door handle with the back door unlocked, the back door latch motor drives the open the locking plate and
releases the latch. The back door motor t hen raises the door to the full open position.
With the back door fully open, if you press the power liftgate switch, keyfob button or the back door close
switch, the back door motor closes the door to the half-latch state. The back door latch motor then drives the
latch to the full close position.
At the onset of each power open or power close applic ation, the hazard lamps will flash 3 times and the
warning chime will sound 3 dings lasting a total of 2 seconds.
OUTSIDE KEY ANTENNA DETECTION AREA
The outside key antenna detection area of back door open function
is in the range of approximately 80 cm (31.50 in) surrounding back
door opener request switch (1). However, this operating range
depends on the ambient conditions.
OPERATION DESCRIPTION
ALKIA0705GB
ALKIA0581ZZ
Revision: March 2010 2008 QX56

DLK-24
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR OPENER FUNCTION
Power Liftgate Switch O
peration (Fully Closed → Fully Open Operation)
• When the power liftgate switch is pressed, back door control unit terminal 23 receives the signal.
• The back door control unit checks the A/T shift selector lever (P) position through terminal 18, vehicle speed
through terminal 21, ignition status through terminal 7, glass hatch is closed through terminal 17 and battery
voltage is present through terminal 3.
• When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a 5 volt signal through terminal 6 and grounds terminal 9 to sound the warning chime, sends a
signal to the BCM through terminal 4 to flash the hazard lamps and unlocks the back door latch through ter-
minal 12.
• The back door control unit supplies power to the magnetic clutch and the back door motor and moves the back door in the open direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)
• When the back door is opened to the full-open position, the full-open position is detected by the encoder, and the back door control unit switches the back door motor OFF and the magnetic clutch is pulsed and then
turned OFF.
• The back door is held in the fully open position by the gas stays.
Remote Keyless Entry Operation (Fully Closed → Fully Open Operation)
• When the keyfob button is pressed for at least 0.5 seconds, back door control unit terminal 21 receives the
signal.
• The back door control unit checks the A/T shift selector lever (P) position through terminal 18, vehicle speed through terminal 21, ignition status through terminal 7, glass hatch is closed through terminal 17 and battery
voltage is present through terminal 3.
• When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a 5 volt signal through terminal 6 and grounds terminal 9 to sound the warning chime, sends a
signal to the BCM through terminal 4 to flash the hazard lamps and unlocks the back door latch through ter-
minal 12.
• The back door control unit supplies power to the magnetic clutch and the back door motor and moves the
back door in the open direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)
• When the back door is opened to the full-open position, the full-open position is detected by the encoder,
and the back door control unit switches the back door motor OFF and the magnetic clutch is pulsed and then
turned OFF.
• The back door is held in the fully open position by the gas stays.
Back Door Handle Switch Operation (Fully Closed → Fully Open Operation)
• When the back door handle is pulled, back door control unit terminal 26 receives the signal.
• The back door control unit checks that the back door is unlocked and checks the A/T shift selector lever (P)
position through terminal 18, vehicle speed through terminal 21, ignition status through terminal 7, glass
hatch is closed, battery voltage and back door close switch position through terminal 13.
• When the back door control unit receives the signal, if all auto back door operating enable conditions are
met, it sends a 5 volt signal through terminal 6 and grounds terminal 9 to sound the warning chime, sends a
signal to the BCM through terminal 4 to flash the hazard lamps and unlocks the back door latch through ter-
minal 12.
• The back door control unit supplies power to the magnetic clutch and the back door motor and moves the
back door in the open direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)
• When the back door is opened to the full-open position, the full-open position is detected by the encoder,
and the back door control unit switches the back door motor OFF and the magnetic clutch is pulsed and then
turned OFF.
• The back door is held in the fully open position by the gas stays.
Power Liftgate Switch Operation (Fully Open → Fully Closed Operation)
• When the power liftgate switch is pressed, the ba ck door control unit terminal 23 receives the signal.
• The back door control units checks door position through the rotary encoder.
• When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime and sends a
signal to the BCM through terminal 4 to flash the hazard lamps.
• The back door control unit supplies power to the magnetic clutch and the back door motor and move the back door in the close direction. (At this time, it al so executes speed control, input reverse, and anti-pinch
detection control.)
Revision: March 2010 2008 QX56

BACK DOOR OPENER FUNCTIONDLK-25
< FUNCTION DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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• When the back door reaches the half-latch state, the half- latch switch detects this and the signal is sent to
the back door control unit terminal 22.
• When the back door control unit receives the half latch switch signal, it switches OFF the back door motor
and the magnetic clutch and operates the cinch latch motor.
• When the back door latch operates and full close is det ected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door aut\
o closure operation ends
and the door is fully closed.
Remote Keyless Entry Operation (Fully Open → Fully Closed Operation)
• When the remote keyless entry switch is pressed for at least 0.5 seconds, the back door control unit terminal
21 receives the signal.
• The back door control units checks door position through the rotary encoder.
• When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime and sends a
signal to the BCM through terminal 4 to flash the hazard lamps.
• The back door control unit supplies power to the m agnetic clutch and the back door motor and move the
back door in the close direction. (At this time, it al so executes speed control, input reverse, and anti-pinch
detection control.)
• When the back door reaches the half-latch state, the half- latch switch detects this and the signal is sent to
the back door control unit terminal 22.
• When the back door control unit receives the half latch switch signal, it switches OFF the back door motor
and the magnetic clutch and operates the cinch latch motor.
• When the back door latch operates and full close is det ected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door aut\
o closure operation ends
and the door is fully closed.
Back Door Close Switch Operation (Fully Open → Fully Closed Operation)
• When the back door close switch is pressed, the ba ck door control unit terminal 8 receives the signal.
• The back door control units checks back door close switch (terminal 13) status and door position (must be
fully opened), through rotary encoder and battery voltage.
• When the back door control unit receives the signal, if the auto back door operating enable conditions are met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime and sends a
signal to the BCM through terminal 4 to flash the hazard lamps.
• The back door control unit supplies power to the m agnetic clutch and the back door motor and move the
back door in the close direction. (At this time, it al so executes speed control, input reverse, and anti-pinch
detection control.)
• When the back door reaches the half-latch state, the half- latch switch detects this and the signal is sent to
the back door control unit terminal 22.
• When the back door control unit receives the half latch switch signal, it switches OFF the back door motor and the magnetic clutch and operates the cinch latch motor.
• When the back door latch operates and full close is det ected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door aut\
o closure operation ends
and the door is fully closed.
Reversal
The door will reverse direction during power open or close operation if the automatic door main switch, keyfob
or back door close switch is operated. A chime will sound to announce the reversal.
Anti-Pinch Function
• During auto operation, if an object is detected 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 pinch strips in the door's path, a warning chime sounds and the back door operates in the open direction until it is fully open.
Gas Stay Check
• During each power open operation, the back door control unit monitors motor current draw to determine ifthe gas stays are functioning properly.
• If a malfunction of the gas stays is detected, the back door control unit will close the back door while sound-
ing the warning chime. The back door cannot be opened usi ng the switches until the gas stay malfunction is
repaired.
Warning Functions
• The hazard warning lamps flash and a warning chime is sounded according to the back door operating state,
operations, and conditions.
Revision: March 2010 2008 QX56

DLK-34
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
WARNING FUNCTION
WARNING FUNCTION
System DescriptionINFOID:0000000001538926
OPERATION DESCRIPTION
The warning functions are as follows and are given to the user as warning information and warnings using
combinations of Intelligent Key warning buzzer, KEY warning lamp and combination meter display in combina-
tion meter.
• Intelligent Key system malfunction
• OFF position warning
• P position warning
• Take away warning
• Door lock operation warning
• Key warning
• Intelligent Key insert information
• Engine start information
• Steering lock information
• Intelligent key low battery warning
• Key ID warning
OPERATION CONDITION
Once the following condition from below is established, alert or warning will be executed.
Warning/Information functions
Operation procedure
Intelligent Key system malfunction When a malfunction is detected on BCM, warning message will display.
OFF position warning For internal
• Ignition switch: ACC position.
• Door switch (driver side
): ON (Door is open).
For external OFF position warning (For internal) is in active mode, driver side door has
been closed.
NOTE:
OFF position (For external) active only when each of the sequence has oc-
curred as below: P position warning
→ ACC warning → OFF position warning
(For internal) → OFF position warning (For internal)
P position warning • Shift position: Except P position
• Engine is running to stopped (Ignition switch is ON to OFF)
Ta k e a w a y w a r n i n g Door is open to close
• Ignition switch: Except LOCK position.
• Door switch: ON to OFF (Door is open to close).
• Intelligent Key can not be detected inside the vehicle.
Door is open • Door switch: ON (Door is open)
• Key ID verification every 5 seconds when registered Intelligent Key can not
be detected inside the vehicle.
Take away through win-
dow • Engine is running.
• Key ID verification every 30 seconds when registered Intelligent Key can not
be detected inside the vehicle.
• After vehicle speed verification, the registered Intelligent Key can not be de- tect inside the vehicle.
Door lock operation warn-
ing Request switch operation
When request switch is pushed (lock operation) under the following conditions.
• Door switch: ON (Any door is open).
• Intelligent Key is inside vehicle.
Intelligent Key button op-
eration When Intelligent Key button is pushed (lock operation) under the following con-
ditions.
• Door switch: ON (Any door is open).
• Intelligent key is inside vehicle.
Key warning • Ignition switch is OFF position.
• Driver side door switch: ON (Driver side door is open).
• Keyfob is pressed inside the vehicle.
Intelligent Key insert information • Door switch: ON to OFF (Door is open to close).
• Ignition switch: OFF to ON position.
• Intelligent Key can not be detected inside the vehicle.
Revision: March 2010
2008 QX56