2010 INFINITI QX56 Ignition switch

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< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005260236
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:0000000005260237
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.
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< PRECAUTION >
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5. When the repair work is completed, return the ignition switch to the
″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of al l control units using CONSULT-III.
Precaution for Power Generation Variable Voltage Control SystemINFOID:0000000005146570
CAUTION:
For this model, the battery current sensor that is installed to the negative battery cable measures the
charging/discharging current of the battery and performs various engine controls. If an electrical com-
ponent is connected directly to the negative battery terminal, the current flowing through that compo-
nent will not be measured by the battery current sensor. This condition may cause a malfunction of
the engine control system and battery discharge m ay occur. Do not connect an electrical component
or ground wire directly to the battery terminal.
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< COMPONENT DIAGNOSIS >
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A3 M6 W/10 : To E10
G4 M84 W/16 : To B101
A2 M7 B/5 : Passenger select unlock relay B2 M85 W/3 : Tilt motor
A3 M8 W/16 : To D2 B2 M86 W/2 : Tilt motor
A2 M9 BR/24 : To D1 B3 M87 B/5 : Rear power vent window relay (open)
A3 M10 Y/4 : To E29 B3 M89 B/5 : Rear power vent window relay (close)
A3 M11 B/1 : Parking brake switch A3 M91 W/16 : To E26
C3 M12 GR/6 : Key switch and ignition knob switch A2 M92 GR/6 : Power liftgate switch
D3 M13 BR/2 : Front passenger air bag OFF indicator D1 M93 W/24 : Display unit
A1 M14 B/2 : Diode-3 A2 M95 W/6 : Rear power vent window switch
B3 M15 W/4 : Steering lock solenoid A2 M96 BR/6 : Pedal adjusting switch
A2 M16 GR/6 : ADP steering switch C2 M98 W/16 : A/C and AV switch assembly
B2 M17 W/8 : Steering angle sensor C3 M99 BR/2 : Foot lamp LH
C2 M18 W/40 : BCM (body control module) F4 M100 BR/2 : Foot lamp RH
C2 M19 W/15 : BCM (body control module) E3 M104 W/4 : Aux jack
C2 M20 B/15 : BCM (body control module) F2 M105 Y/2 : Front passenger air bag module
C3 M21 W/4 : NATS antenna AMP. F2 M106 O/2 : Front passenger air bag module
C3 M22 W/16 : Data link connector F3 M107 B/5 : Front blower relay
B1 M23 W/12 : Combination meter D5 M108 B/6 : Yaw rate/ side/ decel G sensor
C1 M24 W/40 : Combination meter A1 M109 BR/2 : Front tweeter LH
F2 M25 B/4 : Remote keyless entry receiver D2 M110 BR/2 : Center speaker
B2 M26 W/6 : Ignition switch F2 M111 BR/2 : Front tweeter RH
B2 M28 W/16 : Combination switch C2 M112 BR/14 : BOSE speaker amp.
B2 M29 Y/6 : Combination switch C2 M113 BR/23 : BOSE speaker amp.
B3 M30 GR/8 : Combination switch A2 M116 GR/8 : Sonar system OFF switch
G4 M31 SMJ : To E152 B1 M118 B/2 : Front sonar buzzer
C3 M32 W/4 : In-vehicle sensor F2 M120 W/4 : Remote keyless entry receiver
B3 M33 W/32 : Automatic drive positioner control unit F4 M122 W/4 : Variable blower control (front)
B3 M34 W/16 : Automatic drive positioner control unit C3 M123 W/2 : Tire pressure warning check connector
C5 M35 Y/28 : Air bag diagnosis sensor unit D2 M139 B/2 : Diode-1
G4 M36 SMJ : To B149 D1 M140 B/2 : Diode-2
G3 M37 B/1 : Fuse block (J/B) C2 M141 GR/8 : 4WD shift switch
G3 M38 B/2 : Fuse block (J/B) E1 M142 B/6 : Mode door motor (front)
G3 M39 W/8 : Fuse block (J/B) E3 M143 B/6 : Air mix door motor (passenger)
A3 M40 SMJ : To B69 C1 M144 B/6 : Defroster door motor
D2 M42 W/20 : AV control unit E3 M146 GR/2 : Intake sensor
D2 M43 W/12 : AV control unit D3 M147B/6 : Air mix door motor (driver)
D2 M44 W/32 : AV control unit A3 M148 W/4 : Headlamp aiming switch
D2 M45 W/40 : AV control unit E3 M149 W/4 : Clock
B1 M47 B/2 : Sonar buzzer B1 M150 W/2 : Ignition keyhole illumination
D2 M49 B/26 : A/C auto amp. A3 M158 W/10 : To D3
D2 M50 L/26 : A/C auto amp. Console sub-harness
B3 M51 L/4 : Trailer tow relay 1 D4 M201 W/16 : To M56
B2 M52 W/2 : Combination switch D4 M202 BR/24 : To M64
D3 M53 B/3 : Front power socket LH D4 M203 W/12 : A/T shift selector
E3 M54 B/3 : Front power socket RH D5 M205 W/32 : DVD player
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D5 F3 B/1 : A/C Compressor
D4 F42 GR/2 : Fuel injector No. 5
D5 F4 GR/1 : Oil pressure switch D3 F45 GR/2 : Fuel injector No. 7
D2 F5 GR/4 : Air fuel ratio (A/F) sensor 1 (ban k 2) B4 F46 B/3 : Power steering pressure sensor
C4 F6 GR/3 : Ignition coil No. 2 (with power transistor) E4 F47 GR/3 : Ignition coil No. 1 (with power transistor)
C3 F7 GR/3 : Ignition coil No. 4 (with power transistor) E4 F48 GR/3 : Ignition coil No. 3 (with power transistor)
C3 F8 GR/3 : Ignition coil No. 6 (with power transistor) E4 F49 GR/3 : Ignition coil No. 5 (with power transistor)
E2 F9 G/10 : A/T assembly D4 F50 B/6 : Electric throttle control actuator
C3 F10 — : Engine ground E4 F51 GR/3 : Ignition coil No. 7 (with power transistor)
D3 F11 B/3 : Crankshaft position sensor (POS) D2 F52 GR/3 : Ignition coil No. 8 (with power transistor)
E1 F12 G/4 : Heated oxygen sensor 2 (bank 2) E5 F53 B/6 : Mass air flow sensor
F2 F13 G/4 : Heated oxygen sensor 2 (bank 1) B2 F54 B/81 : ECM
B2 F14 W/24 : To E5 F1 F55 B/2 : ATP switch
D4 F15 GR/2 : EVAP canister purge volume control
solenoid valve F2 F56 B/8 : Transfer terminal cord assembly
E5 F16 — : Engine ground G1 F57 B/2 : Transfer motor
C4 F18 GR/2 : Fuel injector No. 2 F2 F58 GR/6 : Transfer control device
D4 F20 GR/2 : Fuel injector No. 4 F2 F59 B/2 : Wait detection switch
F4 F21 GR/2 : Condenser-1 F1 F60 GR/2 : Neutral-4LO switch
D3 F22 GR/2 : Fuel inje ctor No. 6 D5 F61 G/2: Intake valve timing control solenoid valve
(bank 1)
D4 F23 B/3 : Camshaft position sensor (phase) D5 F62 B/3 : Intake valve timing control position sensor
(bank 1)
D4 F26 B/6 : To F101 C4 F63 G/2: Intake valve timing control solenoid valve
(bank 2)
E3 F27 /1 : Starter motor C4 F64 B/3: Intake valve timing control position sensor
(bank 2)
E3 F28 GR/1 : Starter motor E3 F65 GR/4 : Air fuel ratio (A/F) sensor 1 (bank 1)
D4 F30 GR/2 : Fuel injector No. 1 C2 F68 GR/2 : Water valve
D3 F31 GR/2 : Fuel injector No. 8 Engine control sub-harness
B2 F32 W/16 : To E2 C3 F101 B/6 : To F26
C2 F33 W/16 : To E19 C3 F102 B/2 : Knock sensor (bank 1)
C2 F34 W/2 : To E39 C3 F103 GR/2 : Engine coolant temperature sensor
B3 F39 /1 : Fusible link box (battery) C3 F104 B/2 : Knock sensor (bank 2)
D4 F41 GR/2 : Fuel injector No. 3
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PWC-6
< FUNCTION DIAGNOSIS >
POWER WINDOW SYSTEM
REAR POWER WINDOW CONTROL
INPUT/OUTPUT SIGNAL CHART
POWER WINDOW OPERATION
• Power window system is operable during the retained power operation timer after turning ignition switch ON
and OFF.
• Main power window and door lock/unlock switch can open/close all windows.
• Power window and door lock unlock switch RH & rear power window switches LH and RH can open/close the corresponding windows.
REAR POWER VENT WINDOW OPERATION
• Rear power vent window system is operable during the retained power operation timer after turning ignitionswitch ON and OFF.
• Rear power vent window switch can open/close the rear power vent window LH and RH.
POWER WINDOW AUTO-OPERATION
• AUTO UP/DOWN operation can be performed when main power window and door lock/unlock switch or
power window and door lock/unlock switch RH turns to AUTO.
• Main power window and door lock/unlock switch controls rear power window LH/RH auto-operation.
• Encoder continues detecting the movement of power window motor and transmits to front power window
switch LH/RH or rear power window control unit LH/RH as the encoder pulse signal while power window
motor is operating.
• Front power window switch LH/RH or rear power window control unit LH/RH reads the changes of encoder signal and stops AUTO operation when door glass is at fully opened/closed position.
• Power window motor is operable in case encoder is malfunctioning.
RETAINED POWER OPERATION
• Retained power operation is an additional power supply function that enables power window system to oper-
ate during the 45 seconds even when ignition switch is turned OFF
Retained power function cancel conditions
• Front door CLOSE (door switch OFF) →OPEN (door switch ON).
• When ignition switch is ON.
• When timer time passes. (45 seconds)
POWER WINDOW LOCK
The power window lock is designed to lock operation of all windows except for front door window LH.
When in the lock position, the power window lock signal is transmitted to power window and door lock/unlock
switch RH and rear power window control unit LH/RH by power window serial link. This prevents the power
window motor from operating.
Item Input signal to front power window
switch Front power window switch
function Actuator
Power window and
door lock/unlock
switch RH Front power window motor RH UP/
DOWN signal
Power window control Front power window motor RH
Encoder Encoder pulse signal
BCM RAP signal
Item Input signal to front power window
switch Front power window switch
function Actuator
Main power window
and door lock/un-
lock switch Rear power window motor LH/RH UP/
DOWN signal
Power window control Rear power window motor LH/RH
Rear power window
switch LH/RH
Rear power window motor LH/RH UP/
DOWN signal
Rear power window
control unit LH/RH Rear power window
motor control LH
RH UP/DOWN signal
Encoder Encoder pulse signal
BCM Power window serial link signal
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POWER WINDOW SYSTEMPWC-7
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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 DLK-56, "
CONSULT-III Function (INTELLIGENT KEY)".
NOTE:
Use CONSULT-III to change settings.
MODE1 (3sec)/MODE2 (OFF)/MODE3 (5sec)
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DIAGNOSIS SYSTEM (BCM)PWC-11
< FUNCTION DIAGNOSIS >
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RETAINED PWR : CONSULT-III Function (BCM - RETAINED PWR)INFOID:0000000005369878
DATA MONITOR
ACTIVE TEST
WORK SUPPORT
Monitor Item [Unit] Description
IGN ON SW [ON/OFF] Indicates condition of ignition switch.
DOOR SW-DR [ON/OFF] Indicates condition of front door switch LH.
DOOR SW-AS [ON/OFF] Indicates condition of front door switch RH.
Test Item Description
RETAINED PWR This test is able to supply RAP signal (powe
r) from BCM (body control module) to power window
system and power sunroof system (if equipped). Those systems can be operated when turning on
“RETAINED PWR” on CONSULT-III screen even if the ignition switch is turned OFF.
NOTE:
During this test, CONSULT-III can be operated with ignition switch in OFF position. “RETAINED
PWR” should be turned “ON” or “OFF” on CONSULT-III screen when ignition switch is ON. Then
turn ignition switch OFF to check retained power operation. CONSULT-III might be stuck if “RE-
TAINED PWR” is turned “ON” or “OFF” on CONSULT-III screen when ignition switch is OFF.
Work item Description
RETAINED PWR SET RAP signal’s power supply period can be changed by mode setting. Selects RAP signal’s power
supply period between three steps
• MODE1 (45 sec.)/MODE2 (OFF)/MODE 3 (2 min.).
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PWC-12
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
POWER WINDOW MAIN SWITCH
POWER WINDOW MAIN SWITCH : DescriptionINFOID:0000000005147171
• BCM supplies power.
• It operates each power window motor via corresponding power window switch and makes window move up/down when main power window and door lock/unlock switch is operated.
POWER WINDOW MAIN SWITCH : Component Function CheckINFOID:0000000005147172
Main Power Window And Door Lock/Unlock Switch
1. CHECK MAIN POWER WINDOW AND DO OR LOCK/UNLOCK SWITCH FUNCTION
Does power window motor operate with main power window and door lock/unlock switch operation?
Is the inspection result normal?
YES >> Main power window and door lock/unlock switch power supply and ground circuit are OK.
NO >> Refer to PWC-12, "
POWER WINDOW MAIN SWITCH : Diagnosis Procedure".
POWER WINDOW MAIN SWITCH : Diagnosis ProcedureINFOID:0000000005147173
Regarding Wiring Diagram information, refer to PWC-53, "Wiring Diagram".
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between main power window and door lock/ unlock switch connectors and ground.
Is the measurement value within the specification?
YES >> GO TO 3
NO >> GO TO 2
2. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and main power window and door lock/unlock switch.
3. Check continuity between BCM connector and main power win- dow and door lock/unlock switch connectors.
Te r m i n a l
Voltage (V)(Approx.)
(+)
(–)
Main power window and
door lock/unlock switch
connector Te r m i n a l
D7 (A) 10
Ground Battery voltage
D8 (B) 19
ALKIA0273ZZ
BCM connector Terminal Main power window and
door lock/unlock switch connector Terminal Continuity
M20 (A) 68
D7 (B) 10
Ye s
69 D8 (C) 19
LIIA2215E
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