2008 INFINITI QX56 keyless

DIAGNOSIS SYSTEM (BCM)INL-13
< FUNCTION DIAGNOSIS >
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BATTERY SAVER
BATTERY SAVER : CONSULT-III FunctionINFOID:0000000001601385
WORK SUPPORT
DATA MONITOR
ACTIVE TEST
LUGGAGE LAMP TEST ON Outputs the cargo lamp control signal to turn cargo lamp ON.
OFF Stops the cargo lamp control signal to turn cargo lamp OFF.
Test item
Operation Description
Service itemSetting item Setting
ROOM LAMP TIMER SET MODE 1
(ON)
Interior room lamp timer activates with synchronizing all doors.
MODE 2
(OFF) Interior room lamp timer activates with synchronizing the front door LH
only.
Monitor item
[Unit] Description
IGN ON SW
[ON/OFF] The switch status input from ignition switch
KEY ON SW
[ON/OFF] Key switch status input from key slot
DOOR SW-DR
[ON/OFF] The switch status input from front door switch LH
DOOR SW-AS
[ON/OFF] The switch status input from front door switch RH
DOOR SW-RR
[ON/OFF] The switch status input from rear door switch RH
DOOR SW- RL
[ON/OFF] The switch status input from rear door switch LH
BACK DOOR SW
[ON/OFF] The switch status input from back door switch
KEY CYL LK-SW
[ON/OFF] Lock switch status received from key cylinder switch by power window serial link
KEY CYL UN-SW
[ON/OFF] Unlock switch status received from key cylinder switch by power window serial link
CDL LOCK SW
[ON/OFF] Lock switch status received from door lock/unlock switch by power window serial link
CDL UNLOCK SW
[ON/OFF] Unlock switch status received from door lock/unlock switch by power window serial
link
I-KEY LOCK
[ON/OFF] Lock signal status received from remote keyless entry receiver
I-KEY UNLOCK
[ON/OFF] Unlock signal status received from remote keyless entry receiver
Test item
Operation Description
BATTERY SAVER ON Outputs the battery saver output/power supply to turn the interior lamps ON.
OFF Stops the battery saver output/power supply to turn the interior lamps OFF.
Revision: March 2010 2008 QX56

PG-42
< COMPONENT DIAGNOSIS >
HARNESS
A3 M6 W/10 : To E10A2 M92 B/6 : Power liftgate switch
A2 M7 B/5 : Passenger select unlock relay D1 M93 W/24 : Display unit
A3 M8 W/16 : To D2 A2 M95 W/6 : Rear power vent window switch
A2 M9 BR/24 : To D1 A2 M96 BR/6 : Pedal adjusting switch
A3 M10 Y/4 : To E29 C2 M98 W/16 : A/C and AV switch assembly
A3 M11 B/1 : Parking brake switch C3 M99 BR/2 : Foot lamp LH
C3 M12 GR/6 : Key switch and ignition knob switch F4 M100 BR/2 : Foot lamp RH
D3 M13 BR/2 : Front passenger air bag OFF indicator F4 M101 Y/2 : Driver air bag module
B3 M15 W/4 : Steering lock solenoid F4 M102 GR/8 : Combination switch (spiral cable)
A2 M16 GR/6 : ADP steering switch F4 M103 Y/2 : Driver air bag module
B2 M17 W/8 : Steering angle sensor E3 M104 W/4 : Aux jack
C2 M18 W/40 : BCM (body control module) F2 M105 Y/2 : Front passenger air bag module
C2 M19 W/15 : BCM (body control module) F2 M106 O/2 : Front passenger air bag module
C2 M20 B/15 : BCM (body control module) F3 M107 B/5 : Front blower relay
C3 M22 W/16 : Data link connector D5 M108 B/6 : Yaw rate/ side/ decel G sensor
B1 M23 W/12 : Combination meter A1 M109 BR/2 : Front tweeter LH
C1 M24 W/40 : Combination meter D2 M110 BR/2 : Center speaker
F2 M25 B/4 : Remote keyless entry receiver F2 M111 BR/2 : Front tweeter LH
B2 M26 W/6 : Ignition switch C2M112 BR/14 : BO SE speaker amp.
A2 M27 B/2 : Diode-3 C2 M113 BR/23 : BOSE speaker amp.
B2 M28 W/16 : Combination switch B3 M114 W/2 : Heated steering wheel
B2 M29 Y/6 : Combination switch (spiral cable) A2 M116 GR/8 : Sonar system OFF switch
B3 M30 GR/8 : Combination switch (spiral cable) B1 M118 BR/2 : Front sonar buzzer
G4 M31 SMJ : To E152 F2 M120 W/4 : Remote keyless entry receiver
C3 M32 W/4 : In-vehicle sensor F4 M122 W/4 : Variable blower control (front)
B3 M33 W/32 : Automatic drive position control unit C3 M123 W/2 : Tire pressure warning check connector
B3 M34 W/16 : Automatic drive position control unit D2 M124 GR/3 : AV control unit
C5 M35 Y/28 : Air bag diagnosis sensor unit D2 M125 B/1 : Satellite radio antenna
G4 M36 SMJ : To B149 C3 M129 V/1 : Satellite radio tuner
G3 M37 B/1 : Fuse block (J/B) D2 M139 B/2 : Diode-1
G3 M38 B/2 : Fuse block (J/B) D1 M140 B/2 : Diode-2
D3 M39 W/8 : Fuse block (J/B) C2 M141 GR/8 : 4WD shift switch
A3 M40 SMJ : To B69 E1 M142 B/6 : Mode door motor (front)
D2 M42 W/20 : AV control unit E3 M143 B/6 : Air mix door motor (passenger)
D2 M43 W/12 : AV control unit C1 M144 B/6 : Defroster door motor
D2 M44 W/32 : AV control unit E3 M146 GR/2 : Intake sensor
D3 M45 W/40 : AV control unit D3 M147B/6 : Air mix doo r motor (driver)
D2 M46 W/32 : AV control unit D2 M148 W/4 : Headlamp aiming switch
D2 M49 L/26 : A/C auto AMP D3 M149 W/4 : Clock
D2 M50 B/26 : A/C auto AMP B1 M150 W/2 : Ignition keyhole illumination
B3 M51 L/4 : Trailer tow relay 1 G4 M157 W/20 : To B161
B2 M52 W/2 : Combination switch (spiral cable) A3 M158 W/10 : To D3
D3 M53 B/3 : Front power socket LH Console sub-harness
E3 M54 B/3 : Front power socket RH (for cigarette
lighter) D4 M201 W/16 : To M56
D2 M55 W/4 : Hazard switch D4 M202 BR/24 : To M64
Revision: March 2010 2008 QX56

PWC-3
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ANTI-PINCH SYSTEM DOES NOT OPERATE
NORMALLY (PASSENGER SIDE) ................ ..
101
Diagnosis Procedure ........................................... ..101
ANTI-PINCH SYSTEM DOES NOT OPERATE
NORMALLY (REAR LH SIDE) .........................
102
Diagnosis Procedure ........................................... ..102
ANTI-PINCH SYSTEM DOES NOT OPERATE
NORMALLY (REAR RH SIDE) ........................
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Diagnosis Procedure ........................................... ..103
AUTO OPERATION DOES NOT OPERATE
BUT MANUAL OPERATES NORMALLY
(DRIVER SIDE) .................................................
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Diagnosis Procedure .............................................104
AUTO OPERATION DOES NOT OPERATE
BUT MANUAL OPERATES NORMALLY
(PASSENGER SIDE) ...................................... ..
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Diagnosis Procedure ........................................... ..105
AUTO OPERATION DOES NOT OPERATE
BUT MANUAL OPERATES NORMALLY
(REAR LH SIDE) ..............................................
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Diagnosis Procedure ........................................... ..106
AUTO OPERATION DOES NOT OPERATE
BUT MANUAL OPERATES NORMALLY
(REAR RH SIDE) ..............................................
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Diagnosis Procedure ........................................... ..107
POWER WINDOW RETAINED POWER OP-
ERATION DOES NOT OPERATE PROPERLY
..
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Diagnosis Procedure ........................................... ..108
DOES NOT OPERATE BY KEY CYLINDER
SWITCH ...........................................................
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Diagnosis Procedure ........................................... ..109
KEYLESS POWER WINDOW DOWN DOES
NOT OPERATE ...............................................
110
Diagnosis Procedure .............................................110
POWER WINDOW LOCK SWITCH DOES
NOT FUNCTION ..............................................
111
Diagnosis Procedure .............................................111
REAR POWER VENT WINDOWS DO NOT
OPERATE .......................................................
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Diagnosis Procedure .............................................112
PRECAUTION ............................................113
PRECAUTIONS ...............................................113
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
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Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .................................
113
ON-VEHICLE REPAIR ...............................115
POWER WINDOW MAIN SWITCH .................115
Removal and Installation ..................................... ..115
FRONT POWER WINDOW SWITCH ..............116
Removal and Installation .......................................116
REAR POWER WINDOW SWITCH ................117
Removal and Installation .......................................117
REAR POWER VENT WINDOW SWITCH .....118
Removal and Installation .......................................118
Revision: March 2010 2008 QX56

POWER WINDOW SYSTEMPWC-7
< FUNCTION DIAGNOSIS >
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ANTI-PINCH OPERATION
• Pinch foreign material in the door glass during AUTO-U P operation, and it is the anti-pinch function that low-
ers the door glass 150 mm (5.91 in) or 2 seconds when detected.
• Encoder continues detecting the movement of power window motor and transmits to power window switch
as the encoder pulse signal while power window motor is operating.
• Resistance is applied to the power window motor rotation that changes the frequency of encoder pulse sig-
nal if foreign material is trapped in the door glass.
• Front power window switch LH/RH and rear power window control unit LH/RH controls to lower the window glass for 150 mm (5.91 in) or 2 seconds after it detects encoder pulse signal frequency change.
OPERATION CONDITION
• When all door glass AUTO-UP operation is performed ( anti-pinch function does not operate just before the
door glass closes and is fully closed)
NOTE:
Depending on environment and driving conditions, if a similar impact or load is applied to the door glass, it
may lower.
KEY CYLINDER SWITCH OPERATION
Hold the door key cylinder to the LOCK or UNLOCK dire ction for more than 1 second to OPEN or CLOSE front
power windows when ignition switch is OFF. In addition, it stops when key position is moved to NEUTRAL
when operating.
OPERATION CONDITION
• Ignition switch OFF
• Hold door key cylinder to LOCK position for more than 1 second to perform CLOSE operation of the door glass.
• Hold door key cylinder to UNLOCK position for more than 1 second to perform OPEN operation of the door glass.
KEYLESS POWER WINDOW DOWN OPERATION
Front power windows open when the unlock button on Intelligent Key is activated and kept pressed for more
than 3
(NOTE) seconds with the ignition switch OFF. The windows keep opening if the unlock button is continu-
ously pressed.
The power window opening stops when the following operations are performed:
• When the unlock button is kept pressed more than 15 seconds.
• When the ignition switch is turned ON while the power window opening is operated.
• When the unlock button is released.
While retained power operation is activated, ke yless power window down function cannot be operated.
NOTE:
Keyless power window down operation mode can be changed by “PW DOWN SET” mode in “WORK SUP-
PORT”. Refer to SEC-22, "
CONSULT-III Function (INTELLIGENT KEY)".
NOTE:
Use CONSULT-III to change settings.
MODE1 (3sec)/MODE2 (OFF)/MODE3 (5sec)
Revision: March 2010 2008 QX56

POWER WINDOW SERIAL LINKPWC-39
< COMPONENT DIAGNOSIS >
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POWER WINDOW SERIAL LINK
POWER WINDOW MAIN SWITCH
POWER WINDOW MAIN SWITCH : DescriptionINFOID:0000000001735691
Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and BCM
transmit and receive the signal by power window serial link.
The signal mentioned below is transmitted from BCM to main power window and door lock/unlock switch and
power window and door lock/unlock switch RH
• Keyless power window down signal
The signal mentioned below is transmitted from main pow er window and door lock/unlock switch to power win-
dow and door lock/unlock switch RH
• Front door window RH operation signal
• Power window control by key cylinder switch signal
• Power window lock switch signal
• Retained power operation signal
POWER WINDOW MAIN SWITCH : Component Function CheckINFOID:0000000001735692
1. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL
Check (“CDL LOCK SW ”, “CDL UNLOCK SW”) in “D ATA MONITOR” mode for “POWER DOOR LOCK SYS-
TEM” with CONSULT-III. Refer to DLK-48, "
DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)".
Is the inspection result normal?
YES >> Power window serial link is OK.
NO >> Refer to PWC-39, "
POWER WINDOW MAIN SWITCH : Diagnosis Procedure".
POWER WINDOW MAIN SWITCH : Diagnosis ProcedureINFOID:0000000001735693
Power Window Serial Link Check
1. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL
1. Remove Intelligent Key or ignition key, and close front door LH and RH.
2. Check signal between BCM connector and ground with oscillo- scope when door lock and unlock switch (LH and RH) is turned
to “LOCK” or “UNLOCK”.
3. Check that signals which are shown in the figure below can be detected during 10 second just after door lock and unlock switch
(LH and RH) is turned to “LOCK” or “UNLOCK”.
Monitor item Condition
CDL LOCK SW LOCK
: ON
UNLOCK : OFF
CDL UNLOCK SW LOCK
: OFF
UNLOCK : ON
LIIA0391E
Revision: March 2010 2008 QX56

PWC-40
< COMPONENT DIAGNOSIS >
POWER WINDOW SERIAL LINK
Is the inspection result normal?
YES >> Power window serial link is OK.
NO >> GO TO 2
2. CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM and main power window and door lock/unlock switch.
3. Check continuity between BCM connector (A) and main power window and door lock/unlock switch connector (B).
4. Check continuity between BCM connector (A) and ground.
Is the inspection result normal?
YES >> Replace main power window and door lock/unlock switch. Refer to PWC-115, "Removal and
Installation".
NO >> Repair or replace harness.
FRONT POWER WINDOW SWITCH
FRONT POWER WINDOW SWITCH : DescriptionINFOID:0000000001735694
Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and BCM
transmit and receive the signal by power window serial link.
The signal mentioned below is transmitted from BCM to main power window and door lock/unlock switch and
power window and door lock/unlock switch RH
• Keyless power window down signal
The signal mentioned below is transmitted from main power window and door lock/unlock switch to power win-
dow and door lock/unlock switch RH
• Front door window RH operation signal
• Power window control by key cylinder switch signal
• Retained power operation signal
• Power window lock switch signal
FRONT POWER WINDOW SWITCH : Component Function CheckINFOID:0000000001735695
1. CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH OUTPUT SIGNAL
Te r m i n a l
Signal
(Reference value)
(+)
(–)
BCM connector Terminal
M18 22 Ground
PIIA1297E
BCM connector Terminal Main power window and door
lock/unlock switch connector Terminal Continuity
M18 (A) 22 D7 (B)14 Yes
ALKIA1026ZZ
BCM connector Terminal
GroundContinuity
M18 (A) 22 No
Revision: March 2010 2008 QX56

PWC-54
< 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: March 2010 2008 QX56

BCM (BODY CONTROL MODULE)PWC-55
< 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