2009 INFINITI QX56 wiring

PG-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005852239
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:0000000005852240
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

PG
POWER SUPPLY ROUTING CIRCUITPG-9
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K L
B A
O P
N
COMPONENT DIAGNOSIS
POWER SUPPLY ROUTING CIRCUIT
Wiring Diagram —Battery Power Supply —INFOID:0000000003776566
AAMWA0229GB
Revision: December 20092009 QX56

PG-18
< COMPONENT DIAGNOSIS >
POWER SUPPLY ROUTING CIRCUIT
Wiring Diagram —Accessory Power Supply —
INFOID:0000000004244431
ABMWA0065GB
Revision: December 20092009 QX56

PG-22
< COMPONENT DIAGNOSIS >
POWER SUPPLY ROUTING CIRCUIT
Wiring Diagram —Igniti on Power Supply —
INFOID:0000000003776567
ABMWA0066GB
Revision: December 20092009 QX56

PG-30
< COMPONENT DIAGNOSIS >
POWER SUPPLY ROUTING CIRCUIT
Fuse
INFOID:0000000003776568
• If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
• Use fuse of specified rating. Never use fuse of more than specified
rating.
• Do not partially install fuse; always insert it into fuse holder prop- erly.
• Remove fuse for “ELECTRICAL PARTS (BAT)” if vehicle is not used for a long period of time.
Fusible LinkINFOID:0000000003776569
A melted fusible link can be detected either by visual inspection or by
feeling with finger tip. If its condition is questionable, use circuit
tester or test lamp.
CAUTION:
• If fusible link should melt, it is possible that critical circuit
(power supply or large current carrying circuit) is shorted. In
such a case, carefully check and eliminate cause of malfunc-
tion.
• Never wrap outside of fusible link with vinyl tape. Important: Never let fusible link touch an y other wiring harness, vinyl or
rubber parts.
CEL083
1 : Fusible link
ALMIA0015GB
Revision: December 20092009 QX56

PG
HARNESSPG-45
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K L
B A
O P
N
D2 M55 W/4 : Hazard switch
D4 M203 W/12 : A/T shift selector
D4 M56 W/16 : To M201 D5 M205 W/32 : DVD player
A3 M57 — : Body ground D5 M207 B/3 : Console power socket
F2 M58 B/6 : Intake door motor C4 M208 BR/20 : To M69
F3 M59 BR/2 : Glove box lamp C5 M209 W/2: Inside key antenna 2 (rear of center
console)
G3 M60 W/6 : Fuse block (J/B) C4 M210 GR/2: Inside key antenna 3 (front of center
console)
C3 M61 — : Body ground C4 M212 W/6 : Rear heated seat switch LH
F4 M62 B/2 : Front blower motor C4 M213 BR/6 : Rear heated seat switch RH
D4 M63 BR/20 : To M251 Console switch sub-harness
D4 M64 BR/24 : To M202 D4 M251 BR/20 : To M63
F2 M65 W/4 : To M301 D4 M252 BR/6 : Front heated seat switch RH
G3 M66 B/1 : To E33 C4 M253 GR/6 : VDC OFF switch
C3 M69 BR/20 : To M208 C3 M255 W/6 : Front heated seat switch LH
A2 M70 W/40 : Intelligent key unit C4 M256 B/2 : A/T shift selector
A2 M71 L/4 : Heated steering relay C4 M260 W/6 : Heated steering wheel switch
D3 M73 BR/6 : Back-up lamp relay Optical sensor sub-harness
G3 M74 BR/24 : To D102 F1 M301 W/4 : To M65
G3 M75 W/10 : To D101 D1 M302 B/4 : Optical sensor
A3 M76 W/6 : Electric brake (pre-wiring)
E2 M77 Y/4 : Front passenger air bag module
(service replacement)
Revision: December 20092009 QX56

PWC-2
PASSENGER SIDE : Description ...........................25
PASSENGER SIDE : Compo nent Function Check
...
25
PASSENGER SIDE : Diagnosis Procedure ........ ...25
REAR LH ................................................................ ...28
REAR LH : Description ...........................................28
REAR LH : Component Function Check ................28
REAR LH : Diagnosis Procedure ............................28
REAR RH ............................................................... ...30
REAR RH : Description ..........................................31
REAR RH : Component Function Check ................31
REAR RH : Diagnosis Procedure ...........................31
DOOR SWITCH .................................................34
Description ........................................................... ...34
Component Function Check ...................................34
Diagnosis Procedure ..............................................34
Component Inspection ............................................35
DOOR KEY CYLINDER SWITCH ......................36
Description ........................................................... ...36
Component Function Check ...................................36
Diagnosis Procedure ..............................................36
Component Inspection ............................................37
POWER WINDOW SERIAL LINK .....................39
POWER WINDOW MAIN SWITCH ........................ ...39
POWER WINDOW MAIN SWITCH : Description ...39
POWER WINDOW MAIN SWITCH : Component
Function Check .......................................................
39
POWER WINDOW MAIN SWITCH : Diagnosis
Procedure ...............................................................
39
FRONT POWER WINDOW SWITCH ..................... ...40
FRONT POWER WINDOW SWITCH : Descrip-
tion ..........................................................................
40
FRONT POWER WINDOW SWITCH : Compo-
nent Function Check ...............................................
40
FRONT POWER WINDOW SWITCH : Diagnosis
Procedure ...............................................................
41
REAR POWER WINDOW SWITCH ....................... ...42
REAR POWER WINDOW SWITCH : Power Win-
dow Serial Link Check Rear LH or RH ...................
42
POWER WINDOW LOCK SWITCH ...................43
Description ........................................................... ...43
Component Function Check ...................................43
REAR POWER VENT WINDOW SWITCH
CIRCUIT CHECK ...............................................
44
Description ........................................................... ...44
Diagnosis Procedure - (Early Production) ..............44
Diagnosis Procedure - (Late Production) ...............44
REAR POWER VENT WINDOW MOTOR LH
CIRCUIT CHECK ...............................................
46
Description ........................................................... ...46
Diagnosis Procedure ..............................................46
REAR POWER VENT WINDOW MOTOR RH
CIRCUIT CHECK ...............................................
47
Description ........................................................... ...47
Diagnosis Procedure ...............................................47
REAR POWER VENT WINDOW RELAY
(OPEN) CHECK .................................................
48
Description ........................................................... ...48
Diagnosis Procedure - (Early Production) ...............48
Diagnosis Procedure - (Late Production) ............. ...49
REAR POWER VENT WINDOW RELAY
(CLOSE) CHECK ...............................................
51
Description ........................................................... ...51
Diagnosis Procedure - (Early Production) ...............51
Diagnosis Procedure - (Late Production) ............. ...52
ECU DIAGNOSIS .......................................54
BCM (BODY CONTROL MODULE) ............... ...54
Reference Value .................................................. ...54
Terminal Layout ......................................................56
Physical Values .......................................................56
Wiring Diagram .......................................................62
POWER WINDOW MAIN SWITCH ...................67
Reference Value .................................................. ...67
Wiring Diagram .......................................................69
Fail Safe .................................................................80
FRONT POWER WINDOW SWITCH ................82
Reference Value .................................................. ...82
Wiring Diagram .......................................................84
Fail Safe .................................................................95
SYMPTOM DIAGNOSIS ............................97
NONE OF THE POWER WINDOWS CAN BE
OPERATED USING ANY SWITCH ................ ...
97
Diagnosis Procedure ............................................ ...97
DRIVER SIDE POWER WINDOW ALONE
DOES NOT OPERATE ......................................
98
Diagnosis Procedure ............................................ ...98
FRONT PASSENGER SIDE POWER WIN-
DOW ALONE DOES NOT OPERATE ...............
99
Diagnosis Procedure ............................................ ...99
REAR LH SIDE POWER WINDOW ALONE
DOES NOT OPERATE .....................................
100
Diagnosis Procedure ............................................ .100
REAR RH SIDE POWER WINDOW ALONE
DOES NOT OPERATE .....................................
101
Diagnosis Procedure ............................................ .101
ANTI-PINCH SYSTEM DOES NOT OPERATE
NORMALLY (DRIVER SIDE) ...........................
102
Diagnosis Procedure ............................................ .102
Revision: December 20092009 QX56

PWC-62
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
Wiring Diagram
INFOID:0000000004065498
AAMWA0236GB
Revision: December 20092009 QX56