2009 INFINITI QX56 wiring

WCS-2
WARNING CHIME SYSTEM .............................23
Wiring Diagram .................................................... ...23
ECU DIAGNOSIS ..................................... ...28
COMBINATION METER ................................. ...28
Reference Value .................................................. ...28
Wiring Diagram .......................................................30
Fail Safe .................................................................46
DTC Index ..............................................................47
BCM (BODY CONTROL MODULE) ..................49
Reference Value .................................................. ...49
Terminal Layout ......................................................51
Physical Values ......................................................51
Wiring Diagram .......................................................57
SYMPTOM DIAGNOSIS .............................62
THE LIGHT REMINDER WARNING DOES
NOT SOUND ................................................... ...
62
Description ........................................................... ...62
Diagnosis Procedure ...............................................62
THE SEAT BELT WARNING CONTINUES
SOUNDING, OR DOES NOT SOUND ...............
63
Description ........................................................... ...63
Diagnosis Procedure ...............................................63
THE KEY WARNING DOES NOT SOUND .......64
Description ........................................................... ...64
Diagnosis Procedure ...............................................64
PRECAUTION ............................................65
PRECAUTIONS .............................................. ...65
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. ...
65
Revision: December 20092009 QX56

WCS
WARNING CHIME SYSTEMWCS-23
< COMPONENT DIAGNOSIS >
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WARNING CHIME SYSTEM
Wiring DiagramINFOID:0000000003776719
ABNWA0073GB
Revision: December 20092009 QX56

WCS-30
< ECU DIAGNOSIS >
COMBINATION METER
Wiring Diagram
INFOID:0000000004115461
AANWA0124GB
Revision: December 20092009 QX56

WCS
BCM (BODY CONTROL MODULE)WCS-57
< ECU DIAGNOSIS >
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Wiring DiagramINFOID:0000000004115467
AAMWA0236GB
Revision: December 20092009 QX56

WCS
PRECAUTIONSWCS-65
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005867889
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.
Revision: December 20092009 QX56

WT-1
SUSPENSION
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SECTION WT
A
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WT
N
O PCONTENTS
ROAD WHEELS & TIRES
BASIC INSPECTION ....... .............................3
DIAGNOSIS AND REPAIR WORKFLOW ..... .....3
Repair Work Flow ................................................ ......3
INSPECTION AND ADJUSTMENT .....................5
Preliminary Check ............................................... ......5
Transmitter Wake Up Operation ...............................5
ID Registration Procedure .........................................6
FUNCTION DIAGNOSIS ...............................8
TPMS .............................................................. .....8
System Diagram .................................................. ......8
System Description ...................................................8
System Component .................................................10
DIAGNOSIS SYSTEM (BCM) ............................11
CONSULT-III Function (BCM) ............................. ....11
Self-Diagnosis (With CONSULT-III) ........................12
Self-Diagnosis (Without CONSULT-III) ...................13
COMPONENT DIAGNOSIS .........................14
C1708 - C1711 DATA FROM TRANSMITTER
NOT BEING RECEIVED ................................. ....
14
Description .......................................................... ....14
DTC Logic ...............................................................14
Data from Transmitter Not Being Received ............14
Special Repair Requirement ...................................15
C1712 - C1715, C1720 - C1723, C1724 -
C1727 TRANSMITTER MALFUNCTION ....... ....
16
Description .......................................................... ....16
DTC Logic ...............................................................16
Transmitter Malfunction ...........................................16
Special Repair Requirement ...................................17
C1716 - C1719 TRANSMITTER PRESSURE
MALFUNCTION .............................................. ....
18
Description .......................................................... ....18
DTC Logic ...............................................................18
Transmitter Pressure Malfunction ............................18
Special Repair Requirement ................................ ....18
C1729 VEHICLE SPEED SIGNAL ....................19
Description ...............................................................19
DTC Logic ................................................................19
Vehicle Speed Signal ..............................................19
C1735 IGNITION SIGNAL .................................20
Description ...............................................................20
DTC Logic ................................................................20
Diagnosis Procedure ...............................................20
ECU DIAGNOSIS .........................................21
BCM (BODY CONTROL MODULE) .................21
Reference Value .................................................. ....21
Wiring Diagram ........................................................23
Self-Diagnosis (With CONSULT-III) ........................26
Self-Diagnosis (Without CONSULT-III) ...................27
SYMPTOM DIAGNOSIS ..............................29
TPMS .................................................................29
Symptom Table ................................................... ....29
LOW TIRE PRESSURE WARNING LAMP
DOES NOT TURN ON .......................................
30
Low Tire Pressure Warning Lamp Does Not Come
On When Ignition Switch Is Turned On ...................
30
LOW TIRE PRESSURE WARNING LAMP
STAYS ON ........................................................
31
Low Tire Pressure Warning Lamp Stays On When
Ignition Switch Is Turned On ............................... ....
31
LOW TIRE PRESSURE WARNING LAMP
BLINKS .............................................................
32
Low Tire Pressure Warning Lamp Flashes When
Ignition Switch Is Turned On ...................................
32
HAZARD WARNING LAMPS FLASH ..............33
Revision: December 20092009 QX56

BCM (BODY CONTROL MODULE)WT-23
< ECU DIAGNOSIS >
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WT
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Wiring DiagramINFOID:0000000003772388
ABEWA0003GB
Revision: December 20092009 QX56

PRECAUTIONSWT-37
< PRECAUTION >
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M A
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WT
N
O P
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005873220
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:0000000005873221
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: December 20092009 QX56