2008 INFINITI QX56 lock

CO-12
< ON-VEHICLE MAINTENANCE >
ENGINE COOLANT
2. Set the vehicle heater controls to the full HOT and heater ON position. Turn the vehicle ignition ON with
the engine OFF as necessary to activate the heater mode.
3. Remove the vented reservoir cap and replace it with a non-vented reservoir cap before filling the cooling
system.
4. Install the Tool by installing the radiator cap adapter onto the radiator neck opening. Then attach the gauge body assembly
with the refill tube and the venturi assembly to the radiator cap
adapter.
5. Insert the refill hose into the coolant mixture container that is placed at floor level. Make sure the ball valve is in the closed
position.
• Use Genuine NISSAN Long Life Anti-freeze coolant or equiva-lent, mixed 50/50 with distilled water or demineralized water.
Refer to MA-12, "
Fluids and Lubricants".
6. Install an air hose to the venturi assembly, the air pressure must be within specification.
CAUTION:
The compressed air supply must be equipped with an air
dryer.
7. The vacuum gauge will begin to rise and there will be an audible hissing noise. During this process open the ball valve on the refill hose slightly. Coolant will be vi sible rising in the refill hose. Once the refill hose is
full of coolant, close the ball valve. This will purge any air trapped in the refill hose.
8. Continue to draw the vacuum until the gauge reaches 28 inches of vacuum. The gauge may not reach 28 inches in high altitude
locations, use the vacuum specifications based on the altitude
above sea level.
9. When the vacuum gauge has reached the specifi ed amount, disconnect the air hose and wait 20 seconds
to see if the system loses any vacuum. If the vacuum level drops, perform any necessary repairs to the
system and repeat steps 6 - 8 to bring the vacuum to the specified amount. Recheck for any leaks.
10. Place the coolant container (with the refill hose insert ed) at the same level as the top of the radiator. Then
open the ball valve on the refill hose so the coolant will be drawn up to fill the cooling system. The cooling
system is full when the vacuum gauge reads zero.
CAUTION:
Do not allow the coolant container to get too low when filling, to avoid air from being drawn into
the cooling system.
11. Remove the Tool from the radiator neck opening and install the radiator cap. Radiator drain plug
: Refer to CO-11
.
RH cylinder block drain plug : Refer to EM-82
.
Tool number : KV991J0070 (J-45695)
Cooling system capacity
(with reservoir) : Refer to
MA-12, "
Fluids
and Lubricants".
Compressed air
supply pressure : 5.7 - 8.5 kPa (5.6 - 8.4 kg/cm
2, 80
- 120 psi)
LLIA0058E
Altitude above sea level Vacuum gauge reading
0 - 100 m (328 ft) : 28 inches of vacuum
300 m (984 ft) : 27 inches of vacuum
500 m (1,641 ft) : 26 inches of vacuum
1,000 m (3,281 ft) : 24 - 25 inches of vacuum
LLIA0057E
Revision: March 2010 2008 QX56

CO-20
< ON-VEHICLE REPAIR >
WATER PUMP
WATER PUMP
Removal and InstallationINFOID:0000000001538864
CAUTION:
• When removing water pump, be careful not to get engine coolant on drive belt.
• Water pump cannot be disassembled and should be replaced as a unit.
REMOVAL
1. Drain engine coolant so that no engine coolant comes out from water pump fitting hole. Refer to CO-11,
"Changing Engine Coolant".
CAUTION:
Perform when the engine is cold.
2. Remove the engine front undercover using power tool.
3. Remove the air duct and resonator assembly. Refer to EM-25, "
Removal and Installation".
4. Remove the drive belt. Refer to EM-13, "
Removal and Installation".
5. Remove the water pump pulley.
6. Remove the water pump. • Engine coolant will leak from the cylinder block, so have a receptacle ready below.
CAUTION:
Handle water pump vane so that it does not contact any other parts.
INSPECTION AFTER REMOVAL
• Visually check that there is no signi ficant dirt or rust on the water
pump body and vane.
• Make sure there is no looseness in the vane shaft, and that it turns smoothly when rotated by hand.
• Replace the water pump assembly, if necessary.
INSTALLATION
Installation is in the reverse order of removal.
• After installation bleed the air from the cooling system. Refer to CO-11, "
Changing Engine Coolant".
INSPECTION AFTER INSTALLATION
KBIA2543E
1. Gasket2. Water pump3. Water pump pulley
KBIA2552E
Revision: March 2010 2008 QX56

PRECAUTIONSDEF-31
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004894308
The Supplemental Restraint System such as “AIR 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 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 Wheel Rotation After Battery Disconnect
INFOID:0000000004894309
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 power 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: March 2010 2008 QX56

DEF-32
< PRECAUTION >
PRECAUTIONS
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 a ll control units using CONSULT-III.
Handling for Adhesive and PrimerINFOID:0000000001608214
• Do not use an adhesive which is past its usable date. Shel f life of this product is limited to six months after
the date of manufacture. Carefully adhere to the expiration or manufacture date printed on the box.
• Keep primers and adhesive in a cool, dry place. Ideally, they should be stored in a refrigerator.
• Open the seal of the primer and adhesive just before application. Discard the remainder.
• Before application, be sure to shake the primer container to stir the contents. If any floating material is found, do not use it.
• If any primer or adhesive contacts the skin, wipe it off with gasoline or equivalent and wash the skin with
soap.
• When using primer and adhesive, always observe the precautions in the instruction manual.
Revision: March 2010 2008 QX56

DLK-1
BODY EXTERIOR, DOORS, ROOF & VEHICLE SECURITY
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SECTION DLK
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CONTENTS
DOOR & LOCK
WITH INTELLIGENT KEY SYSTEM
BASIC INSPECTION ....... .............................
6
DIAGNOSIS AND REPAIR WORKFLOW ..... .....6
Work Flow ........................................................... ......6
INSPECTION AND ADJUSTMENT .....................9
ADDITIONAL SERVICE WHEN REMOVING BAT-
TERY NEGATIVE TERMINAL ............................... ......
9
ADDITIONAL SERVICE WHEN REMOVING
BATTERY NEGATIVE TERMINAL : Description ......
9
ADDITIONAL SERVICE WHEN REMOVING
BATTERY NEGATIVE TERMINAL : Special Re-
pair Requirement ................................................. ......
9
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT .................................................... ......
9
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Description ..................................
9
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement .......
9
FUNCTION DIAGNOSIS ..............................10
DOOR LOCK FUNCTION .............................. ....10
DOOR LOCK AND UNLOCK SWITCH ................. ....10
DOOR LOCK AND UNLOCK SWITCH : System
Diagram ...................................................................
10
DOOR LOCK AND UNLOCK SWITCH : System
Description ..............................................................
10
DOOR LOCK AND UNLOCK SWITCH :
Component Parts Location ....................................
11
DOOR LOCK AND UNLOCK SWITCH :
Component Description ..........................................
11
DOOR REQUEST SWITCH ................................... ....12
DOOR REQUEST SWITCH : System Diagram ......12
DOOR REQUEST SWITCH : System Description ....12
DOOR REQUEST SWITCH :
Component Parts Location ....................................
15
DOOR REQUEST SWITCH :
Component Description ...................................... ....
17
INTELLIGENT KEY ................................................ ....17
INTELLIGENT KEY : System Diagram ....................17
INTELLIGENT KEY : System Description ...............17
INTELLIGENT KEY : Component Parts Location ....20
INTELLIGENT KEY : Component Description ........21
BACK DOOR OPENER FUNCTION .................23
BACK DOOR OPENER SWITCH .......................... ....23
BACK DOOR OPENER SWITCH : System Dia-
gram ........................................................................
23
BACK DOOR OPENER SWITCH : System De-
scription ...................................................................
23
BACK DOOR OPENER SWITCH :
Component Parts Location ....................................
28
BACK DOOR OPENER SWITCH :
Component Description ..........................................
28
INTELLIGENT KEY ................................................ ....29
INTELLIGENT KEY : System Diagram ....................29
INTELLIGENT KEY : System Description ...............29
INTELLIGENT KEY : Component Parts Location ....31
INTELLIGENT KEY : Component Description ........32
WARNING FUNCTION ......................................34
System Description ..................................................34
Component Parts Location ....................................38
KEY REMINDER FUNCTION ............................40
System Description ..................................................40
Component Parts Location ....................................41
HAZARD AND BUZZER REMINDER FUNC-
TION ..................................................................
43
System Diagram ......................................................43
System Description ..................................................43
Component Parts Location ....................................44
Component Description ..........................................46
HOMELINK UNIVERSAL TRANSCEIVER .......47
Revision: March 2010 2008 QX56

DLK-2
Component Description ..........................................47
DIAGNOSIS SYSTEM (BCM) ............................48
COMMON ITEM ..................................................... ...48
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) ................................................. ...
48
DOOR LOCK .......................................................... ...48
DOOR LOCK : CONSULT-III Function (BCM -
DOOR LOCK) .........................................................
48
MULTIREMOTE ENT ............................................. ...49
MULTIREMOTE ENT : CONSULT-III Function
(BCM - MULTIREMOTE ENT) ................................
49
INTELLIGENT KEY ................................................ ...51
INTELLIGENT KEY : CONSULT-III Function
(BCM - INTELLIGENT KEY) ...................................
51
DIAGNOSIS SYSTEM (INTELLIGENT KEY
UNIT) ............................................................... ...
52
CONSULT-III Function (INTELLIGENT KEY) ...... ...52
COMPONENT DIAGNOSIS ........................54
U1000 CAN COMM CIRCUIT ......................... ...54
Description ........................................................... ...54
DTC Logic ...............................................................54
Diagnosis Procedure ..............................................54
U1010 CONTROL UNIT (CAN) .........................55
DTC Logic ............................................................ ...55
Diagnosis Procedure ..............................................55
Special Repair Requirement ...................................55
INSIDE KEY ANTENNA 1 (REAR OF CEN-
TER CONSOLE) ............................................. ...
56
Description ........................................................... ...56
Component Function Check .................................56
Diagnosis Procedure ..............................................56
INSIDE KEY ANTENNA 2 (LUGGAGE COM-
PARTMENT) ......................................................
58
Description ........................................................... ...58
Component Function Check .................................58
Diagnosis Procedure ..............................................58
INSIDE KEY ANTENNA 3 (FRONT OF CEN-
TER CONSOLE) ................................................
60
Description ........................................................... ...60
Component Function Check .................................60
Diagnosis Procedure ..............................................60
INSIDE KEY ANTENNA 4 (OVERHEAD CON-
SOLE AREA) .....................................................
62
Description ........................................................... ...62
Component Function Check .................................62
Diagnosis Procedure ..............................................62
POWER SUPPLY AND GROUND CIRCUIT .....64
INTELLIGENT KEY UNIT ....................................... ...64
INTELLIGENT KEY UNIT : Diagnosis Procedure ...64
BCM (BODY CONTROL MODULE) ..........................64
BCM (BODY CONTROL MODULE) : Diagnosis
Procedure ...............................................................
64
BACK DOOR .......................................................... ...65
BACK DOOR : Diagnosis Procedure ......................65
DOOR SWITCH .................................................67
Description ........................................................... ...67
Component Function Check ..................................67
Diagnosis Procedure ...............................................67
DOOR LOCK AND UNLOCK SWITCH .............70
DRIVER SIDE ......................................................... ...70
DRIVER SIDE : Description ....................................70
DRIVER SIDE : Component Function Check ........70
DRIVER SIDE : Diagnosis Procedure .....................70
PASSENGER SIDE ...................................................72
PASSENGER SIDE : Descripti on ...........................72
PASSENGER SIDE :
Component Function Check ............................... ...
72
PASSENGER SIDE : Diagnosis Procedure ............72
KEY CYLINDER SWITCH .................................75
Description ........................................................... ...75
Component Function Check ...................................75
Diagnosis Procedure ...............................................75
FRONT DOOR LOCK ACTUATOR LH (DOOR
UNLOCK SENSOR) ..........................................
77
Description ........................................................... ...77
Component Function Check ..................................77
Diagnosis Procedure ...............................................77
Component Inspection ............................................78
DOOR REQUEST SWITCH ...............................79
Description ..............................................................79
Component Function Check ..................................79
Diagnosis Procedure ...............................................79
Component Inspection ............................................80
DOOR LOCK ACTUATOR ................................82
DRIVER SIDE ......................................................... ...82
DRIVER SIDE : Description ....................................82
DRIVER SIDE : Component Function Check ........82
DRIVER SIDE : Diagnosis Procedure .....................82
PASSENGER SIDE ...................................................83
PASSENGER SIDE : Descripti on ...........................83
PASSENGER SIDE :
Component Function Check ............................... ...
83
PASSENGER SIDE : Diagnosis Procedure ............83
REAR LH ................................................................ ...84
REAR LH : Description ...........................................84
REAR LH : Component Function Check ............ ...84
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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

DLK-4
BACK DOOR CLOSE SWITCH SYSTEM .......133
Diagnosis Procedure ........................................... ..133
BACK DOOR SWITCH ....................................134
Diagnosis Procedure ........................................... ..134
CINCH LATCH MOTOR SYSTEM ...................135
Diagnosis Procedure ........................................... ..135
INTELLIGENT KEY UNIT POWER BACK
DOOR INPUT SIGNAL ....................................
136
Description ........................................................... ..136
Diagnosis Procedure .............................................136
INTELLIGENT KEY UNIT POWER BACK
DOOR OUTPUT SIGNAL ................................
137
Description ........................................................... ..137
Diagnosis Procedure .............................................137
HOMELINK UNIVERSAL TRANSCEIVER ......138
Wiring Diagram .................................................... ..138
Description .............................................................139
Component Function Check ................................140
Diagnosis Procedure .............................................140
ECU DIAGNOSIS ..................................... ..142
BCM (BODY CONTROL MODULE) ............... .142
Reference Value .................................................. ..142
Terminal Layout .....................................................144
Physical Values .....................................................144
Wiring Diagram — POWER DOOR LOCK SYS-
TEM — ..................................................................
150
Fail Safe ................................................................162
DTC Inspection Priority Chart .............................163
DTC Index ........................................................... ..163
INTELLIGENT KEY UNIT ................................165
Reference Value - Intelligent Key Unit ................. ..165
Reference Value - Steering Lock Solenoid ............168
Wiring Diagram — INTELLIGENT KEY SYSTEM
— ......................................................................... ..
169
Fail Safe ................................................................186
BACK DOOR CONTROL UNIT .......................187
Reference Value .................................................. ..187
Wiring Diagram—AUTOMATIC BACK DOOR
SYSTEM— ............................................................
189
Fail Safe .............................................................. ..199
SYMPTOM DIAGNOSIS ............................200
INTELLIGENT KEY SYSTEM SYMPTOMS ... .200
Symptom Table ................................................... ..200
DOOR LOCK FUNCTION SYMPTOMS ..........201
DOOR LOCK AND UNLOCK SWITCH ................. ..201
DOOR LOCK AND UNLOCK SWITCH : Symptom
Table ......................................................................
201
INTELLIGENT KEY ................................................ ..202
INTELLIGENT KEY : Symptom Table ..................202
BACK DOOR OPENER FUNCTION ................204
BACK DOOR OPENER SWITCH .......................... .204
BACK DOOR OPENER SWITCH : Symptom Ta-
ble ........................................................................ .
204
BACK DOOR SWITCH ........................................... .204
BACK DOOR SWITCH : Symptom Table .............205
INTELLIGENT KEY ................................................ .205
INTELLIGENT KEY : Symptom Table ..................205
WARNING FUNCTION SYMPTOMS ...............206
Symptom Table .................................................... .206
KEY REMINDER FUNCTION SYMPTOMS .....209
Symptom Table .................................................... .209
HAZARD FUNCTION ..................................... ..210
Symptom Table .................................................... .210
HORN FUNCTION ............................................211
Symptom Table .................................................... .211
HOMELINK UNIVERSAL TRANSCEIVER ......212
Symptom Table .................................................... .212
SQUEAK AND RATTLE TROUBLE DIAG-
NOSES ..............................................................
213
Work Flow ............................................................ .213
Inspection Procedure ............................................215
Diagnostic Worksheet ...........................................217
PRECAUTION ...........................................219
PRECAUTIONS .............................................. ..219
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. .
219
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ................................
219
Precaution for work ...............................................220
PREPARATION .........................................221
PREPARATION .............................................. ..221
Special Service Tool ............................................ .221
Commercial Service Tool ......................................222
ON-VEHICLE REPAIR ..............................223
HOOD ............................................................. ..223
Fitting Adjustment ................................................ .223
Removal and Installation of Hood Assembly ........224
Removal and Installation of Hood Lock Control ....225
Hood Lock Control Inspection ...............................226
DOOR ............................................................. ..228
Fitting Adjustment ................................................ .228
Removal and Installation .......................................229
Revision: March 2010 2008 QX56