2004 INFINITI QX56 Can communication

GI-38
CONSULT-II CHECKING SYSTEM
Revision: August 20072004 QX56
Nickel Metal Hydride Battery Replacement EAS0014S
CONSULT-II contains a nickel metal hydride battery. When replacing the battery obey the following:
WAR NIN G:
Replace the nickel metal hydride battery with Genuine CONSULT-II battery only. Use of another bat-
tery may present a risk of fire or explosion. The battery may present a fire or chemical burn hazard if
mistreated. Do not recharge, disassemble or dispose of in fire.
Keep the battery out of reach of children and discard used battery conforming to the local regulations.
Checking EquipmentEAS0014T
When ordering the below equipment, contact your NISSAN distributor.
CAUTION:

Previous CONSULT-II “I” and “Y” DLC-I and DLC-II cables should NOT be used anymore because
their DDL connector pins can be damaged during cable swapping.

If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self- diagnosis depending on control unit which carries out CAN communication.

If CONSULT-II CONVERTER is not connected with CONSULT-II, the vehicle enters “FAIL SAFE
MODE” which will “LIGHT UP the HEAD LIGHT” and /or “COOLING FAN ROTATING” when CON-
SULT-II is started.
NOTE:

The CONSULT-II must be used in conjunction with a program card.
CONSULT-II does not require loading (Initialization) procedure.

Be sure the CONSULT-II is turned OFF before installing or removing a program card.
CONSULT-II Start ProcedureEAS0014U
NOTE:
Turning ignition switch off when performing CAN diagnosis could cause CAN memory to be erased.
1. Connect CONSULT-II and CONSULT-II CONVERTER to the
data link connector.
Tool name Description
NISSAN CONSULT-II (J-44200)
1. CONSULT-II unit (Tester internal soft: Resident
Version 3.4.0) and accessories.
2. Program card UED04D-1 and AEN04A-1 (for
NATS) or later, to confirm the best combination
of these software, refer to CONSULT-II Opera-
tion Manual.
3. CONSULT-II CONVERTER.
4. "CONSULT-II pigtail" cable.
SAIA0363E
PAIA0070E

CONSULT-II CHECKING SYSTEM
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Revision: August 20072004 QX56
2. If necessary, turn on the ignition switch.
3. Touch “START (NISSAN BASED VHCL)” or System Shortcut
key (eg: ENGINE) on the screen.
CONSULT-II Data Link Connector (DLC) CircuitEAS001SM
INSPECTION PROCEDURE
If the CONSULT-II cannot diagnose the system properly, check the following items:
NOTE:
The preceding schematic is an example and may not be a true representation of the vehicle. The actual DDL1
circuits (CAN lines) from DLC pins 6 and 14 as well as the DDL2 circuit (K-line) from DLC pin 7 may be con-
nected to more than one system. A short in a DDL circuit connected to a control unit in one system may affect
CONSULT-II access to other systems.
BCIA0029E
LAIA0028E
Symptom Check item
CONSULT-II cannot access
any system.

CONSULT-II DLC power supply circuit (Terminal 8) and ground circuit (Terminal 4). For detailed cir-
cuit, refer to LAN-5, "
CAN Communication Unit" .

CONSULT-II DLC cable and CONSULT-II CONVERTER.
CONSULT-II cannot access
individual system. (Other sys-
tems can be accessed.)

CONSULT-II program card (Check the appropriate CONSULT-II program card for the system.
Refer to GI-38, "
Checking Equipment" .

Power supply and ground circuit for the control unit of the system (For detailed circuit, refer to wir-
ing diagram for each system.)

Open or short circuit between the system and CONSULT-II DLC (For detailed circuit, refer to wiring
diagram for each system.)

Open or short circuit in CAN or K communication line. Refer to LAN-3, "Precautions When Using
CONSULT-II" .

GW-1
GLASSES, WINDOW SYSTEM & MIRRORS
I BODY
CONTENTS
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SECTION GW
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Revision: August 20072004 QX56 PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Handling for Adhesive and Primer ........................... 3
Trouble Diagnosis Precaution .................................. 3
PREPARATION ........................................................... 4
Special Service Tool ................................................. 4
Commercial Service Tool ......................................... 4
SQUEAK AND RATTLE TROUBLE DIAGNOSES ..... 5
Work Flow ................................................................ 5
CUSTOMER INTERVIEW ..................................... 5
DUPLICATE THE NOISE AND TEST DRIVE ....... 6
CHECK RELATED SERVICE BULLETINS ........... 6
LOCATE THE NOISE AND IDENTIFY THE
ROOT CAUSE ...................................................... 6
REPAIR THE CAUSE ........................................... 6
CONFIRM THE REPAIR ....................................... 7
Generic Squeak and Rattle Troubleshooting ........... 7
INSTRUMENT PANEL .......................................... 7
CENTER CONSOLE ............................................. 7
DOORS ................................................................. 7
TRUNK .................................................................. 8
SUNROOF/HEADLINER ....................................... 8
OVERHEAD CONSOLE (FRONT AND REAR) ..... 8
SEATS ................................................................... 8
UNDERHOOD ....................................................... 8
Diagnostic Worksheet .............................................. 9
WINDSHIELD GLASS ...............................................11
Removal and Installation .........................................11
REMOVAL ............................................................11
INSTALLATION ....................................................11
REAR WINDOW GLASS AND MOLDING ............... 13
Removal and Installation ........................................ 13
REMOVAL ........................................................... 13
INSTALLATION ................................................... 14
POWER WINDOW SYSTEM .................................... 15
Component Parts and Harness Connector Location ... 15
System Description ................................................ 15
MANUAL OPERATION ....................................... 16AUTO OPERATION ............................................. 18
POWER WINDOW SERIAL LINK ....................... 18
POWER WINDOW LOCK ................................... 18
RETAINED POWER OPERATION ...................... 18
ANTI-PINCH SYSTEM ........................................ 18
POWER WINDOW CONTROL BY THE FRONT
DOOR LOCK ASSEMBLY LH (KEY CYLINDER
SWITCH) ............................................................. 19
CAN Communication System Description .............. 19
Schematic ............................................................... 20
Wiring Diagram — WINDOW — ............................. 22
Terminal and Reference Value for Main Power Win-
dow and Door Lock/Unlock Switch ......................... 30
Terminal and Reference Value for Power Window
and Door Lock/Unlock Switch RH .......................... 30
Terminal and Reference Value for BCM ................. 32
Work Flow ............................................................... 33
CONSULT-II Function (BCM) ................................. 33
CONSULT-II INSPECTION PROCEDURE .......... 33
ACTIVE TEST ..................................................... 34
WORK SUPPORT ............................................... 34
DATA MONITOR ................................................. 34
Trouble Diagnoses Symptom Chart ....................... 36
BCM Power Supply and Ground Circuit Check ...... 38
Main Power Window and Door Lock/Unlock Switch
Power Supply and Ground Circuit Check ............... 39
Power Window and Door Lock/Unlock Switch RH
Power Supply and Ground Circuit Check ............... 40
Front Power Window Motor LH Circuit Check ........ 41
Front Power Window Motor RH Circuit Check ....... 42
Limit Switch Circuit Check Front LH ....................... 43
Limit Switch Circuit Check Front RH ...................... 44
Encoder Circuit Check Front LH ............................. 46
Encoder Circuit Check Front RH ............................ 48
Door Switch Check ................................................. 50
Front Door Lock Assembly LH (Key Cylinder Switch)
Check ..................................................................... 52
Power Window Serial Link Check Front LH and RH ... 54
Rear Power Window Control Unit LH or RH Power
Supply and Ground Circuit Check .......................... 56

GW-2Revision: August 20072004 QX56 Rear Power Window Switch LH or RH Power Supply
and Ground Circuit Check ...................................... 58
Rear Power Window Motor LH Circuit Check ......... 58
Rear Power Window Motor RH Circuit Check ........ 59
Limit Switch Circuit Check Rear LH and RH ........... 60
Encoder Circuit Check Rear LH or RH ................... 62
Power Window Serial Link Check Rear LH or RH ... 64
Rear Power Vent Window Switch Circuit Check ..... 65
Rear Power Vent Window Motor LH Circuit Check ... 65
Rear Power Vent Window Motor RH Circuit Check ... 66
Rear Power Vent Window Relay (OPEN) Check .... 66
Rear Power Vent Window Relay (CLOSE) Check ... 67
FRONT DOOR GLASS AND REGULATOR ............. 69
Removal and Installation ........................................ 69
FRONT DOOR GLASS ....................................... 69
FRONT DOOR GLASS REGULATOR ................ 70
FITTING INSPECTION AND SETTING AFTER
INSTALLATION .................................................... 70
REAR DOOR GLASS AND REGULATOR ............... 72
Removal and Installation ........................................ 72
REAR DOOR GLASS .......................................... 72
REAR DOOR GLASS REGULATOR ................... 73
SIDE WINDOW GLASS ............................................ 75
Removal and Installation ........................................ 75
REMOVAL ........................................................... 75
INSTALLATION .................................................... 75
INSIDE MIRROR ....................................................... 76
Wiring Diagram — I/MIRR — ................................. 76
Removal and Installation ........................................ 77
INSIDE MIRROR ................................................. 77
REAR WINDOW DEFOGGER .................................. 78
Component Parts and Harness Connector Location ... 78
System Description ................................................. 79CAN Communication System Description ..............80
Schematic ...............................................................81
Wiring Diagram — DEF — ......................................82
Terminal and Reference Value for BCM ..................85
Terminal and Reference Value for IPDM E/R ..........85
Work Flow ...............................................................85
CONSULT-II Function (BCM) ..................................86
CONSULT-II BASIC OPERATION PROCEDURE
...86
DATA MONITOR ..................................................87
ACTIVE TEST ......................................................87
Trouble Diagnoses Symptom Chart ........................87
BCM Power Supply and Ground Circuit Check ......89
Rear Window Defogger Switch Circuit Check .........90
Rear Window Defogger Power Supply Circuit
Check ......................................................................91
Rear Window Defogger Circuit Check ....................92
Door Mirror Defogger Power Supply Circuit Check ...92
Door Mirror LH Defogger Circuit Check ..................94
Door Mirror RH Defogger Circuit Check .................95
Rear Window Defogger Signal Check ....................96
Filament Check .......................................................96
Filament Repair .......................................................97
REPAIR EQUIPMENT .........................................97
REPAIRING PROCEDURE .................................97
DOOR MIRROR .........................................................99
Wiring Diagram — MIRROR — ..............................99
Door Mirror Assembly ........................................... 100
REMOVAL .......................................................... 100
INSTALLATION .................................................. 100
Door Mirror Glass .................................................. 100
REMOVAL .......................................................... 100
INSTALLATION .................................................. 101

POWER WINDOW SYSTEM
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POWER WINDOW CONTROL BY THE FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER
SWITCH)
When ignition key switch is OFF, front power window LH and RH can be opened or closed by turning the front
door lock assembly LH (key cylinder switch) to the UNLOCK / LOCK position for more than 3 seconds.

Front power windows can be opened as the front door lock assembly LH (key cylinder switch) is kept fully
turned to the UNLOCK position.

Front power windows can be closed as the front door lock assembly LH (key cylinder switch) is kept fully
turned to the LOCK position.

While performing open/close operation for the windows, power window is stopped when the front door
lock assembly LH (key cylinder switch) is placed in the NEUTRAL position.

When the ignition switch is turned ON while the power window opening operation is performed, the power
window opening stops.
CAN Communication System DescriptionEIS002UO
Refer to LAN-5, "CAN COMMUNICATION" .

POWER WINDOW SYSTEM
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Work FlowEIS002UU
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to GW-15, "
System Description" .
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction.
Refer to GW-36, "
Trouble Diagnoses Symptom Chart" .
4. Does power window system operate normally? Yes, GO TO 5, If No, GO TO 3.
5. INSPECTION END.
CONSULT-II Function (BCM)EIS002UV
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II INSPECTION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. Connect CONSULT-II and CONSULT-II CONVERTER to the
data link connector.
2. Turn ignition switch ON.
3. Touch “START (NISSAN BASED VHCL)”.
BCM diagnostic
test itemDiagnostic mode Content
Inspection by partWORK SUPPORT Changes setting of each function.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The results of transmit/receive diagnosis of CAN communication can be read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.
BBIA0369E
BCIA0029E

GW-80
REAR WINDOW DEFOGGER
Revision: August 20072004 QX56
CAN Communication System DescriptionEIS002VO
Refer to LAN-5, "CAN COMMUNICATION" .

GW-86
REAR WINDOW DEFOGGER
Revision: August 20072004 QX56
CONSULT-II Function (BCM)EIS002VU
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II BASIC OPERATION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector.
3. Turn ignition switch ON.
4. Touch “START (NISSAN BASED VHCL)”.
5. Touch “BCM”.
If “BCM” is not indicated, go to GI-39, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BCM diagnostic
test itemDiagnostic mode Content
Inspection by partWORK SUPPORT Changes setting of each function.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The results of transmit/receive diagnosis of CAN communication can be read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.
BBIA0369E
BCIA0029E
BCIA0030E