2004 INFINITI QX56 diagram

NAVIGATION SYSTEM
AV-105
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Revision: August 20072004 QX56
6. On the “SELF DIAGNOSIS” screen, each unit name will be col-
ored according to the diagnosis result, as follows.

If several malfunctions are present in a unit, color of its switch
on the screen will be either red, yellow, or gray, determined by
the malfunction of the highest priority.
7. Select a switch on the “SELF DIAGNOSIS” screen and com-
ments for the diagnosis results will be shown.

When the switch is green, the following comment will be
shown. “Self-diagnosis was successful. Further diagnosis and
adjustments are recommended. Follow the “Confirmation and
Adjustments” menu or refer to the service manual.”

When the switch is yellow, the following comment will be
shown. “Connection to the following unit is abnormal. See the
service manual for further details”.

When the switch is red, the following comment will be shown.
“Center Control Unit is abnormal”.

When the switch is gray, the following comment will be shown. “Self-diagnosis for DVD-ROM DRIVER
of NAVI was not conducted because no DVD-ROM was available.”
SELF–DIAGNOSIS RESULT
Quick reference table
1. Select an malfunctioning diagnosis No. in the diagnosis result quick reference table.
2. Find estimated malfunctioning system in the diagnosis No. table and perform check by referring to AV-87,
"Wiring Diagram — COMM —" .
3. Turn the ignition switch OFF and perform self-diagnosis again.
*: Center Control unit = NAVI control unit
CAUTION:

When AV switch has a malfunction, you cannot start. Refer to AV-145, "Unable to Operate All of AV
Switches (Unable to Start Self-Diagnosis)" .

When display unit has a malfunction, you cannot start. Refer to AV-143, "Screen is Not Shown" .
Self-diagnosis codes
Green : Not malfunctioning.
Yellow : Cannot be judged by self-diagnosis results.
Red : Unit is malfunctioning.
Gray : Diagnosis has not been done.
SKIA4214E
SKIA4 211 E
Screen switch
Diagnosis No.
Switch color Center control unit* GPS antenna
Red×1
Gray×2
Yellow×3
×4
××5
Diagnosis
No.Possible causeReference
page
1 NAVI control unit malfunction.Refer to
AV- 1 5 7
2 No map DVD-ROM is inserted in the NAVI control unit.Refer to
AV- 1 3 1

BL-1
BODY, LOCK & SECURITY SYSTEM
I BODY
CONTENTS
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SECTION BL
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Revision: August 20072004 QX56 PRECAUTIONS .......................................................... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 4
Precautions for work ................................................ 4
Wiring Diagnosis and Trouble Diagnosis ................. 4
PREPARATION ........................................................... 5
Special service tool .................................................. 5
Commercial Service Tool ......................................... 5
SQUEAK AND RATTLE TROUBLE DIAGNOSIS ...... 6
Work Flow ................................................................ 6
CUSTOMER INTERVIEW ..................................... 6
DUPLICATE THE NOISE AND TEST DRIVE ....... 7
CHECK RELATED SERVICE BULLETINS ........... 7
LOCATE THE NOISE AND IDENTIFY THE
ROOT CAUSE ...................................................... 7
REPAIR THE CAUSE ........................................... 7
CONFIRM THE REPAIR ....................................... 8
Generic Squeak and Rattle Troubleshooting ........... 8
INSTRUMENT PANEL .......................................... 8
CENTER CONSOLE ............................................. 8
DOORS ................................................................. 8
BACK DOOR ......................................................... 9
SUNROOF/HEADLINER ....................................... 9
OVERHEAD CONSOLE (FRONT AND REAR) ..... 9
SEATS ................................................................... 9
UNDERHOOD ....................................................... 9
Diagnostic Worksheet ............................................ 10
HOOD ....................................................................... 12
Fitting Adjustment .................................................. 12
CLEARANCE AND SURFACE HEIGHT
ADJUSTMENT .................................................... 13
HOOD LOCK ADJUSTMENT ............................. 13
Removal and Installation of Hood Assembly .......... 13
Removal and Installation of Hood Lock Control ..... 14
REMOVAL ........................................................... 14
INSTALLATION ................................................... 15
Hood Lock Control Inspection ................................ 15
POWER DOOR LOCK SYSTEM .............................. 16
Component Parts and Harness Connector Location ... 16System Description ................................................. 17
OUTLINE ............................................................. 18
Schematic ............................................................... 19
Wiring Diagram — D/LOCK — ............................... 20
Terminals and Reference Value for BCM ............... 25
Work Flow ............................................................... 25
CONSULT–II Function (BCM) ................................ 26
CONSULT–II INSPECTION PROCEDURE ......... 26
DATA MONITOR ................................................. 27
ACTIVE TEST ..................................................... 28
Trouble Diagnoses Symptom Chart ....................... 29
BCM Power Supply and Ground Circuit Check ...... 29
Door Switch Check ................................................. 31
Key Switch (Insert) Check ...................................... 33
Door Lock/Unlock Switch Check ............................ 34
Glass Hatch Switch Circuit Inspection .................... 36
Front Door Lock Assembly LH (Actuator) Check .... 37
Front Door Lock Actuator RH Check ...................... 39
Rear Door Lock Actuator RH/LH Check ................. 40
Glass Hatch Lock Actuator Check .......................... 41
Front Door Lock Assembly LH (Key Cylinder Switch)
Check ..................................................................... 42
REMOTE KEYLESS ENTRY SYSTEM ..................... 44
Component Parts and Harness Connector Location ... 44
System Description ................................................. 45
INPUTS ............................................................... 45
OPERATING PROCEDURE ................................ 46
CAN Communication System Description .............. 48
Schematic ............................................................... 49
Wiring Diagram — KEYLES — ............................... 50
............................................................................ 50
............................................................................ 51
............................................................................ 52
Terminals and Reference Value for BCM ............... 53
Terminals and Reference Value for IPDM E/R ....... 54
CONSULT-II Function (BCM) ................................. 55
CONSULT-II Inspection Procedure ......................... 55
“MULTI REMOTE ENT” ....................................... 55
CONSULT-II Application Items ............................... 56
“MULTI REMOTE ENT” ....................................... 56

BL-2Revision: August 20072004 QX56 Trouble Diagnosis Procedure ................................. 59
BCM Power Supply and Ground Circuit Check ...... 59
Trouble Diagnoses .................................................. 60
SYMPTOM CHART ............................................. 60
Key Switch (Insert) Check ...................................... 62
Door Switch Check ................................................. 63
Keyfob Battery and Function Check ....................... 65
Remote Keyless Entry Receiver System Check ..... 66
ACC Power Check .................................................. 68
IPDM E/R Operation Check .................................... 68
Check Hazard Function .......................................... 70
Check Horn Function .............................................. 70
Check Headlamp Function ..................................... 70
Check Map Lamp Illumination Function ................. 70
ID Code Entry Procedure ....................................... 71
KEYFOB ID SET UP WITH CONSULT-II ............ 71
KEYFOB ID SET UP WITHOUT CONSULT-II ..... 73
Keyfob Battery Replacement .................................. 74
VEHICLE SECURITY (THEFT WARNING) SYSTEM ... 75
Component Parts and Harness Connector Location ... 75
System Description ................................................. 76
DESCRIPTION .................................................... 76
POWER SUPPLY AND GROUND CIRCUIT ....... 76
INITIAL CONDITION TO ACTIVATE THE SYS-
TEM ..................................................................... 77
VEHICLE SECURITY SYSTEM ALARM OPER-
ATION .................................................................. 78
VEHICLE SECURITY SYSTEM DEACTIVATION ... 78
PANIC ALARM OPERATION ............................... 78
CAN Communication System Description .............. 78
Schematic ............................................................... 79
Wiring Diagram — VEHSEC — .............................. 80
............................................................................. 80
............................................................................. 81
............................................................................. 82
............................................................................. 83
............................................................................. 84
Terminals and Reference Value for BCM ................ 85
Terminals and Reference Value for IPDM E/R ........ 86
CONSULT-II Function (BCM) .................................. 86
CONSULT-II INSPECTION PROCEDURE .......... 87
CONSULT-II APPLICATION ITEM ....................... 89
Trouble Diagnosis ................................................... 90
WORK FLOW ...................................................... 90
Preliminary Check .................................................. 91
Symptom Chart ....................................................... 92
Door Switch Check ................................................. 93
Hood Switch Check ................................................ 95
Combination Meter (Security Indicator Lamp)
Check ..................................................................... 97
Front Door Lock Assembly LH (Key Cylinder Switch)
Check ..................................................................... 98
Vehicle Security Horn Alarm Check ......................100
Vehicle Security Headlamp Alarm Check .............100
Door Lock/Unlock Switch Check ..........................100
AUTOMATIC BACK DOOR SYSTEM .....................101
Component Parts and Harness Connector Location .101
System Description ...............................................102
OPERATION DESCRIPTION ............................102Schematic ............................................................. 107
Wiring Diagram — B/CLOS — .............................. 108
Terminals and Reference Value for Back Door Con-
trol Unit ..................................................................113
Terminals and Reference Value for BCM ..............114
Trouble Diagnosis Procedure ................................115
Self-Diagnosis Procedures ...................................115
INPUT SIGNAL CHECK MODE .........................115
OPERATING CHECK MODE .............................115
Diagnosis Chart ....................................................116
Back Door Power Supply and Ground Circuit
Inspection ..............................................................117
Power Liftgate Switch System Inspection .............118
GLASS HATCH AJAR SWITCH CHECK ...........119
Back Door Close (Close) Switch System Inspection . 120
Back Door Close (Cancel) Switch System Inspec-
tion ........................................................................ 121
Pinch Strip System Inspection .............................. 122
Back Door Warning Chime System Inspection ..... 123
Half-Latch Switch System Inspection .................... 124
Open Switch System Inspection ........................... 125
Close Switch System Inspection ........................... 126
Back Door Handle Switch System Inspection ....... 127
Cinch Latch Motor System Inspection .................. 128
DOOR ...................................................................... 129
Fitting Adjustment ................................................. 129
FRONT DOOR ................................................... 129
REAR DOOR ..................................................... 129
STRIKER ADJUSTMENT .................................. 129
Removal and Installation ....................................... 130
FRONT DOOR ................................................... 130
REAR DOOR ..................................................... 130
BACK DOOR ..................................................... 131
FRONT DOOR LOCK .............................................. 132
Component Structure ............................................ 132
Removal and Installation ....................................... 132
REMOVAL .......................................................... 132
INSTALLATION .................................................. 134
Disassembly and Assembly .................................. 134
DOOR KEY CYLINDER ASSEMBLY ................. 134
REAR DOOR LOCK ................................................ 135
Component Structure ............................................ 135
Removal and Installation ....................................... 135
REMOVAL .......................................................... 135
INSTALLATION .................................................. 135
BACK DOOR LOCK ................................................ 136
Power Back Door Opener ..................................... 136
REMOVAL ......................................................... 136
INSTALLATION ................................................. 136
Door Lock Assembly ............................................. 137
REMOVAL ......................................................... 137
INSTALLATION ................................................. 137
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ...................................................................... 138
Component Parts and Harness Connector Location . 138
System Description ............................................... 139
System Composition ............................................. 139
ECM Re-communicating Function ........................ 140
Wiring Diagram — NATS — .................................. 141

BL-3
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Revision: August 20072004 QX56 Terminals and Reference Value for BCM ............. 142
CONSULT-II ......................................................... 142
CONSULT-II INSPECTION PROCEDURE ....... 142
CONSULT-II DIAGNOSTIC TEST MODE FUNC-
TION .................................................................. 143
HOW TO READ SELF-DIAGNOSTIC RESULTS . 144
IVIS (NATS) SELF-DIAGNOSTIC RESULTS
ITEM CHART .................................................... 144
Work Flow ............................................................ 145
Trouble Diagnoses ............................................... 146
SYMPTOM MATRIX CHART 1 ......................... 146
SYMPTOM MATRIX CHART 2 ......................... 147
DIAGNOSTIC SYSTEM DIAGRAM .................. 147
Diagnostic Procedure 1 ........................................ 148
Diagnostic Procedure 2 ........................................ 149
Diagnostic Procedure 3 ........................................ 150
Diagnostic Procedure 4 ........................................ 151
Diagnostic Procedure 5 ........................................ 152
Diagnostic Procedure 6 ........................................ 155
How to Replace NATS Antenna Amp. .................. 156
HOMELINK UNIVERSAL TRANSCEIVER ............. 157
Wiring Diagram — TRNSCV — ........................... 157
Trouble Diagnoses ............................................... 158
DIAGNOSTIC PROCEDURE ............................ 158
CAB AND REAR BODY ......................................... 159
Body Mounting ..................................................... 159
BODY REPAIR ........................................................ 160
Body Exterior Paint Color ..................................... 160
Body Component Parts ........................................ 161
UNDERBODY COMPONENT PARTS .............. 161
BODY COMPONENT PARTS ........................... 163
FRAME COMPONENT PARTS ......................... 165
Corrosion Protection ............................................ 167
DESCRIPTION .................................................. 167ANTI-CORROSIVE WAX ..................................168
UNDERCOATING ..............................................169
Body Sealing ........................................................170
DESCRIPTION ..................................................170
Body Construction ................................................173
BODY CONSTRUCTION ..................................173
Body Alignment ....................................................174
BODY CENTER MARKS ...................................174
PANEL PARTS MATCHING MARKS .................175
DESCRIPTION ..................................................176
ENGINE COMPARTMENT ................................177
UNDERBODY ...................................................179
PASSENGER COMPARTMENT .......................182
REAR BODY .....................................................187
Handling Precautions for Plastics .........................189
HANDLING PRECAUTIONS FOR PLASTICS ..189
LOCATION OF PLASTIC PARTS ......................190
Precautions in Repairing High Strength Steel .......192
HIGH STRENGTH STEEL (HSS) USED IN NIS-
SAN VEHICLES ................................................192
Foam Repair .........................................................194
URETHANE FOAM APPLICATIONS ................194
FILL PROCEDURES .........................................194
Replacement Operations ......................................195
DESCRIPTION ..................................................195
HOODLEDGE ...................................................198
FRONT PILLAR .................................................199
CENTER PILLAR ..............................................202
OUTER SILL .....................................................204
REAR FENDER .................................................205
REAR SIDE MEMBER ......................................207
REAR FLOOR REAR ........................................208
CRUSH HORN ..................................................209

BL-4
PRECAUTIONS
Revision: August 20072004 QX56
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EIS002QW
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 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 whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WAR NIN G:

To avoid rendering the SRS inoperative, 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 per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for workEIS002QX

After removing and installing the opening/closing parts, be sure to carry out fitting adjustments to check
their operation.

Check the lubrication level, damage, and wear of each part. If necessary, grease or replace it.
Wiring Diagnosis and Trouble DiagnosisEIS002QY
When you read wiring diagrams, refer to the following:

GI-15, "How to Read Wiring Diagrams"

PG-4, "POWER SUPPLY ROUTING CIRCUIT"
When you perform trouble diagnosis, refer to the following:

GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES"

GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident"
Check for any Service bulletins before servicing the vehicle.

BL-20
POWER DOOR LOCK SYSTEM
Revision: August 20072004 QX56
Wiring Diagram — D/LOCK —EIS002RB
WIWA0840E

BL-50
REMOTE KEYLESS ENTRY SYSTEM
Revision: August 20072004 QX56
Wiring Diagram — KEYLES —EIS002RS
LIWA0427E

BL-80
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: August 20072004 QX56
Wiring Diagram — VEHSEC —EIS002SH
WIWA1075E