sensor INFINITI QX56 2009 Factory Service Manual

PG
HARNESSPG-55
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BODY NO. 2 HARNESS
E5 B10 Y/2 : Front LH side air bag module
F2 B75 W/10 : To B400
F3 B13 W/24 : ICC unit F2 B76 GR/2: Inside key antenna 2 (luggage compart-
ment)
E5 B14 Y/2 : Front LH seat belt pre-tensioner C3 B78 W/3 : Rear seat heater RH
E5 B15 Y/2 : LH side air bag (satellite) sensor E3 B79 W/3 : Rear seat heater LH
G3 B17 GR/24 : ICC unit Front seat LH harness
E3 B18 W/3 : Rear door switch LH D3 B200 W/16 : To B37
G1 B19 — : Body ground D5 B202 W/32 : Driver seat control unit
G2 B24 W/16 : Sonar control unit D5 B203 W/16 : Driver seat control unit
B4 B32 W/6 : To B124 C5 B204 W/16 : Sliding motor LH
G2 B35 B/3 : Rear combination lamp LH D3 B205 W/16 : Reclining motor LH
D3 B37 W/16 : To B200 C4 B206 W/6 : Lifting motor (front)
C5 B38 Y/2 : LH side front curtain air bag module D4 B207 GR/6 : Lifting motor (rear)
C5 B40 W/24 : To E34 D4 B208 W/10 : Power seat switch LH
C5 B41 W/12 : To E35 D4 B209 W/3 : Front seat heater LH
C5 B42 W/2 : To E36 D5 B210 W/4 : Lumbar support switch
B4 B43 W/16 : To B111 E5 B211 B/2 : Lumbar support motor
F1 B48 W/18 : To D401 Third row power folding seat sub-harness
F1 B49 W/2 : To D402 F2 B400 W/10 : To B75
F2 B52 W/2 : Rear power vent window motor LH E3 B401 GR/12 : Third row power folding seat control unit
F2 B54 Y/2 : LH side rear curtain air bag module E3 B402 W/10 : Third row power folding seat control unit
G3 B55 W/26 : Back door control unit F3 B403 GR/4 : Third row power folding seat motor LH
F2 B56 GR/16 : Sonar control unit E2 B404 W/4 : To B425
G2 B57 GR/10 : Sonar control unit E3 B425 W/4 : To B404
G1 B63 W/6 : Back door close switch
Revision: December 20092009 QX56

PG-56
< COMPONENT DIAGNOSIS >
HARNESS
F4 B101 W/16 : To M84A1 B140 W/6 : To D601
A5 B105 B/3 : Rear combination lamp RHD1 B145 W/16 : To R200
D4 B106 W/18 : To D301 E2 B146 BR/24 : To R201
F4 B107 W/8 : To E139 F4 B149 SMJ : To M36
D4 B108 W/3 : Front door switch RH B2 B150 W/2 : Rear power vent window motor RH
F4 B111 W/16 : To B43 B2 B153 W/2 : Cargo lamp
E3 B113 Y/12 : Air bag diagnosis se nsor unitE5 B154 W/2 : To B303
D5 B114 Y/2 : RH side air bag (satellite) sensor B3 B155 B/6 : Air mix door motor (rear)
C3 B116 W/3 : Rear door switch RH B3 B156 B/3 : Mode door motor (rear)
F5 B117 — : Body ground E5 B157 Y/4: Seat belt buckle pre-tensioner assembly
RH (seat belt buckle switch)
E5 B118 W/3 : Front seat heater RH C3 B162 BR/6: Third row power folding seat switch
RH side (front)
A2 B119 W/2 : Condenser-3 A3 B163 W/6: Third row power folding seat switch
RH side (rear)
A2 B120 W/2 : Condenser-4 C3 B164 W/6: Third row power folding seat switch
LH side (front)
F4 B124 W/6 : To B32 A4 B165 BR/6: Third row power folding seat switch
driver side (rear)
E4 B126 Y/2 : Front RH side air bag module B2 B166 B/2 : Rear sonar buzzer
D4 B127 Y/2 : Front RH seat belt pre-tensioner Front seat RH harness
C3 B128 Y/2 : RH side rear curtain air bag module E5 B303 W/2 : To B154
F3 B129 Y/2 : RH side front curtain air bag module E4 B308 W/10 : Power seat switch RH
A3 B130 GR/3 : Rear combination lamp RHE4 B309 B/2 : Sliding motor RH
A3 B132 — : Body ground E5 B310 GR/2 : Lifting motor RH (rear)
A3 B133 W/4 : Variable blower control (rear) E4 B311 GR/2 : Lifting motor RH (front)
B3 B134 W/2 : Rear blower motor E4 B350 W/8 : To B136
E3 B136 W/8 : To B350 E4 B351 B/18 : Occupant classification system control unit
D5 B137 W/3 : Belt tension sensor E4 B352 B/3 : Occupant classification system control unit
B2 B138 B/3 : Rear cargo power socket E4 B372 W/2 : Reclining motor RH
A1 B139 W/16 : To D602
Revision: December 20092009 QX56

BCM (BODY CONTROL MODULE)PWC-57
< ECU DIAGNOSIS >
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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
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: December 20092009 QX56

BCM (BODY CONTROL MODULE)PWC-61
< ECU DIAGNOSIS >
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58 W/R Optical sensor Input ON When optical sensor is illumi-
nated
3.1V or more
When optical sensor is not illu-
minated 0.6V or less
59 G Front door lock as-
sembly LH actuator
(unlock) Output OFF
OFF (neutral) 0V
ON (unlock) Battery voltage
60 G/B Turn signal (left) Output ON Turn left ON
61 G/Y Turn signal (right) Output ON Turn right ON
62 R/W Step lamp LH and RH Output OFF ON (any door open) 0V
OFF (all doors closed) Battery voltage
63 L Interior room/map
lamp Output OFFAny door
switchON (open) 0V
OFF (closed) Battery voltage
65 V All door lock actuators
(lock) Output OFFOFF (neutral) 0V
ON (lock) Battery voltage
66 G/Y Front door lock actua-
tor RH, rear door lock
actuators LH/RH and
back door lock actua-
tor (unlock) Output OFF
OFF (neutral) 0V
ON (unlock) Battery voltage
67 B Ground Input ON — 0V
68 W/L Power window power
supply (RAP) Output —Ignition switch ON Battery voltage
Within 45 seconds after igni-
tion switch OFF
Battery voltage
More than 45 seconds after ig-
nition switch OFF 0V
When front door LH or RH is
open or power window timer
operates 0V
69 W/R Power window power
supply
Output — — Battery voltage
70 W/B Battery power supply Input OFF — Battery voltage
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
SKIA3009J
SKIA3009J
Revision: December 20092009 QX56

POWER WINDOW MAIN SWITCHPWC-81
< ECU DIAGNOSIS >
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It changes to condition before initialization and the fo llowing functions do not operate when switched to fail-
safe control.
 Auto-up operation
 Anti-pinch function
 Retained power function
Perform initial operation to recover when switched to fail- safe mode. However, it switches back to fail-safe
control when malfunction is found in power window switch or in motor.
Error Error condition
Pulse sensor malfunction When only one side of pulse signal is being detected for more than the specified value.
Both pulse sensors mal-
function When both pulse signals have not been detected for more than the specified value during glass open/
close operation.
Pulse direction malfunction When the pulse signal that is detected during glass open/close operation detects the opposite condition
of power window motor operating direction.
Glass recognition position
malfunction 1 When it detects the error between glass fully closed position in power window switch memory and actual
fully closed position during glass open/close operation is more than the specified value.
Glass recognition position
malfunction 2 When it detects pulse count more than the value of glass full stroke during glass open/close operation.
Malfunction of not yet up-
dated closed position of
glass When glass open/close operation is continuously performed without fully closing more than the specified
value (approximate
ly 10 strokes).
Revision: December 20092009 QX56

PWC-96
< ECU DIAGNOSIS >
FRONT POWER WINDOW SWITCH
It changes to condition before initialization and the following functions do not operate when switched to fail-
safe control.
 Auto-up operation
 Anti-pinch function
 Retained power function
Perform initial operation to recover when switched to fa il-safe mode. However, it switches back to fail-safe
control when malfunction is found in power window switch or in motor.
Error Error condition
Pulse sensor malfunction When only one side of pulse signal is being detected for more than the specified value.
Both pulse sensors mal-
function When both pulse signals have not been detected for more than the specified value during glass open/
close operation.
Pulse direction malfunction When the pulse signal that is detected during glass open/close operation detects the opposite condition
of power window motor operating direction.
Glass recognition position
malfunction 1 When it detects the error between glass fully closed position in power window switch memory and actual
fully closed position during glass open/close operation is more than the specified value.
Glass recognition position
malfunction 2 When it detects pulse count more than the value of glass full stroke during glass open/close operation.
Malfunction of not yet up-
dated closed position of
glass When glass open/close operation is continuously performed without fully closing more than the specified
value (approximately 10 strokes).
Revision: December 20092009 QX56

PRECAUTIONSPWC-115
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005856661
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
 Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
 When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
 When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wh eel Rotation After Battery Disconnect
INFOID:0000000005885965
NOTE:
 This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
 Remove and install all control units after disconnecti ng both battery cables with the ignition knob in the
″ LOCK ″ position.
 Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS , an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
Revision: December 20092009 QX56

PWO-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005867509
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000005867510
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
Revision: December 20092009 QX56

RAX-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005873184
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISS AN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
 Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
 When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
 When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000005873185
NOTE:
 This Procedure is applied only to models with Intelli gent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
 Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
 Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
Revision: December 20092009 QX56

WHEEL HUBRAX-7
< REMOVAL AND INSTALLATION >
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REMOVAL AND INSTALLATION
WHEEL HUB
Removal and InstallationINFOID:0000000003772260
Rear Wheel Hub and Bearing Assembly
NOTE:
The rear ABS sensor is routed through the back of t he rear backing plate and into the side of the wheel hub
and bearing assembly. It is necessary to remove the wheel hub and bearing assembly to remove the rear ABS
sensor.
REMOVAL
1. Remove the wheel and tire using power tool.
2. Remove the rear brake caliper, without disconnecting t he hydraulic hose, using power tool. Reposition the
rear brake caliper aside using suitable wire. Refer to BR-36, "Removal and Installation of Brake Caliper
and Disc Rotor".
NOTE:
 Do not depress the brake pedal while the brake caliper is removed.
3. Remove the rear disc rotor.
4. Remove the cotter pin, then remove the nut from the drive shaft using power tool.
 Discard the cotter pin, use a new one for installation.
5. Remove the drive shaft. Refer to RAX-9, "Removal and Installa-
tion".
6. Remove the four wheel hub and bearing assembly bolts using power tool.  Discard the four wheel hub and bearing assembly bolts, use new ones for installation.
WDIA0189E
1. Back plate 2. Rear ABS sensor 3. Wheel hub and bearing assembly
4. Wheel stud 5. Rear disc rotor 6. Cotter pin
LDIA0050E
Revision: December 20092009 QX56