2006 INFINITI QX56 key

BCM (BODY CONTROL MODULE)BCS-13
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WORK SUPPORT
Operation Procedure
1. Touch "BCM" on "SELECT TEST ITEM" screen.
2. Touch "WORK SUPPORT" on "SELECT DIAG MODE" screen.
3. Touch "RESET SETTING VALUE" on "SELECT WORK ITEM" screen.
4. Touch "START".
5. "RESET SETTING VALUE OK?" is displayed, and touch "YES".
6. The setting will be changed and "COMPLETED" will be displayed.
7. Touch "END".
Display Item List
CAN Communication Inspection Using CONSULT-II (Self-Diagnosis)EKS00D80
1. SELF-DIAGNOSTIC RESULT CHECK
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 to CONSULT –II, and select “BCM” on “SELECT SYSTEM ” screen.
2. Select “BCM” on “SELECT TEST ITEM ” screen, and select “SELF-DIAG RESULTS ”.
3. Check display content in self-diagnostic results.
Contents displayed
No malfunction>>Inspection End
Malfunction in CAN communication system>>After printing the monitor items, go to LAN-26, "
CAN COMMU-
NICATION" .
ItemDescription
RESET SETTING VALUE Return a value set with WORK SUPPORT of each system to a default value in factory shipment.
CONSULT-II display code Diagnosis item
U1000 INITIAL DIAG
TRANSMIT DIAG ECM
IPDM E/R
METER/M&A I-KEY

BCS-20
BCM (BODY CONTROL MODULE)
Revision: November 20092006 QX56
BCMEKS00D82
REMOVAL AND INSTALLATION
NOTE:
If possible, before removing BCM, retrieve current BCM configuration to use for reference when configuring
brand-new BCM after installation. Refer to BCS-14, "
Configuration" .
Removal
1. Disconnect battery negative terminal.
2. Remove instrument lower panel LH. Refer to IP-13, "
INSTRUMENT LOWER COVER LH" .
3. Remove knee protector. IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
4. Disconnect BCM electrical connectors.
5. Remove BCM screws and remove BCM.
Installation
Installation is in the reverse order of removal.
NOTE:

When replacing BCM, it must be configured. Refer to BCS-14, "Configuration" .

When replacing BCM, perform initialization of NATS system and registration of all NATS ignition key IDs.
Refer to BL-137, "
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)" .

When replacing BCM, perform ID registration procedure of low tire pressure warning system. Refer to
WT-14, "
ID Registration Procedure" .
LEIA0068E

BL-1
BODY, LOCK & SECURITY SYSTEM
I BODY
CONTENTS
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PRECAUTIONS .....................................................
..... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 4
Precautions for work ................................................ 4
PREPARATION ...................................................... ..... 5
Special service tool ............................................. ..... 5
Commercial Service Tool .................................... ..... 5
SQUEAK AND RATTLE TROUBLE DIAGNOSES ..... 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
TRUNK ............................................................. ..... 9
SUNROOF/HEADLINING ................................ ..... 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 ... 16
System Description ............................................. ... 17OUTLINE ..........................................................
... 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 . ... 38
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
Trouble Diagnosis Procedure .............................. ... 59

BL-2Revision: November 20092006 QX56
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 .... ... 77
INITIAL CONDITION TO ACTIVATE THE SYS-
TEM .................................................................. ... 77
VEHICLE SECURITY SYSTEM ALARM OPER-
ATION ............................................................... ... 77
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 ....... ... 86
CONSULT-II APPLICATION ITEM .................... ... 88
Trouble Diagnosis ................................................ ... 89
WORK FLOW ................................................... ... 89
Preliminary Check ............................................... ... 90
Symptom Chart ....................................................... 91
Door Switch Check .............................................. ... 92
Hood Switch Check ............................................. ... 94
Combination Meter (Security Indicator Lamp)
Check .................................................................. ... 95
Front Door Lock Assembly LH (Key Cylinder Switch)
Check .................................................................. ... 96
Vehicle Security Horn Alarm Check ..................... ... 98
Vehicle Security Headlamp Alarm Check ............ ... 98
Door Lock/Unlock Switch Check ............................ 98
AUTOMATIC BACK DOOR SYSTEM .................... ... 99
Component Parts and Harness Connector Location ... 99
System Description .............................................. .100
OPERATION DESCRIPTION ........................... .100
Schematic ............................................................ .105Wiring Diagram — B/CLOS — .............................
.106
Terminals and Reference Value for Back Door Con-
trol Unit ................................................................. . 111
Terminals and Reference Value for BCM ............. .112
Trouble Diagnosis Procedure ............................... .113
Self-Diagnosis Procedures .................................. .113
INPUT SIGNAL CHECK MODE ........................ .113
OPERATING CHECK MODE ............................ .113
Diagnosis Chart ................................................... .114
Back Door Power Supply and Ground Circuit
Inspection ............................................................. .115
Power Liftgate Switch System Inspection ............ .116
GLASS HATCH AJAR SWITCH CHECK .......... .117
Back Door Close (Close) Switch System Inspection .118
Back Door Close (Cancel) Switch System Inspec-
tion ....................................................................... .119
Pinch Strip System Inspection ............................. .121
Back Door Warning Chime System Inspection .... .122
Half-Latch Switch System Inspection ................... .122
Open Switch System Inspection .......................... .123
Close Switch System Inspection .......................... .124
Back Door Handle Switch System Inspection ...... .125
Cinch Latch Motor System Inspection ................. .126
DOOR ..................................................................... .128
Fitting Adjustment ................................................ .128
FRONT DOOR .................................................. .128
REAR DOOR .................................................... .128
STRIKER ADJUSTMENT ................................. .128
Removal and Installation ...................................... .129
FRONT DOOR .................................................. .129
REAR DOOR .................................................... .129
BACK DOOR .................................................... .130
FRONT DOOR LOCK ............................................. .131
Component Structure ........................................... .131
Removal and Installation ...................................... .131
REMOVAL ......................................................... .131
INSTALLATION ................................................. .133
Disassembly and Assembly ................................. .133
DOOR KEY CYLINDER ASSEMBLY ................ .133
REAR DOOR LOCK ............................................... .134
Component Structure ........................................... .134
Removal and Installation ...................................... .134
REMOVAL ......................................................... .134
INSTALLATION ................................................. .134
BACK DOOR LOCK ............................................... .135
Power Back Door Opener .................................... .135
REMOVAL ........................................................ .135
INSTALLATION ................................................ .135
Door Lock Assembly ............................................ .136
REMOVAL ........................................................ .136
INSTALLATION ................................................ .136
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ..................................................................... .137
Component Parts and Harness Connector Location .137
System Description .............................................. .138
System Composition ............................................ .138
ECM Re-communicating Function ....................... .139
Wiring Diagram — NATS — ................................. .140
Terminals and Reference Value for BCM ............. .141

PREPARATIONBL-5
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PREPARATIONPFP:00002
Special service toolEIS004Q2
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service ToolEIS004Q3
Tool number
(Kent-Moore No.)
Tool nameDescription
—
(J-39570)
Chassis ear Locating the noise
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(J-43980)
NISSAN Squeak and Rat-
tle Kit Repairing the cause of noise
—
(J-43241)
Remote Keyless Entry
Tester Used to test keyfobs
SIIA0993E
SIIA0994E
LEL946A
Tool name
(Kent-Moore No.)
Description
Engine ear
(J-39565) Locating the noise
SIIA0995E

POWER DOOR LOCK SYSTEMBL-17
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System DescriptionEIS005Z8
Power is supplied at all times

through 50A fusible link (letter f, located in the fuse and fusible link box)

to BCM terminal 70

through 15A fuse [No. 22, located in the fuse block (J/B)]

to BCM terminal 57

through 10A fuse [No. 19, located in the fuse block (J/B)]

to key switch and key lock solenoid terminal 3.
With ignition key inserted, power is supplied

through key switch and key lock solenoid terminal 4

to BCM terminal 37.
Ground is supplied to terminal 67 of BCM through body grounds M57, M61 and M79.
When the door is locked or unlocked with main power window and door lock/unlock switch, ground is supplied

to CPU of main power window and door lock/unlock switch

through main power window and door lock/unlock switch terminal 17

through grounds M57, M61 and M79.
Then main power window and door lock/unlock switch operation signal is supplied

to BCM terminal 22

through main power window and door lock/unlock switch terminal 14.
When the door is locked or unlocked with power window and door lock/unlock switch RH, ground is supplied

to CPU of power window and door lock/unlock switch RH

through power window and door lock/unlock switch RH terminal 11

through grounds M57, M61 and M79.
Then power window and door lock/unlock switch RH operation signal is supplied

to BCM terminal 22

through power window and door lock/unlock switch RH terminal 16.
When the door is locked with front door lock assembly LH (key cylinder switch), ground is supplied

to main power window and door lock/unlock switch terminal 4

through front door lock assembly LH (key cylinder switch) terminals 1 and 5

through grounds M57, M61 and M79.
Then front door lock assembly LH (key cylinder switch) operation signal is supplied

to BCM terminal 22

through main power window and door lock/unlock switch terminal 14.
When the door is unlocked with front door lock assembly LH (key cylinder switch), ground is supplied

to main power window and door lock/unlock switch terminal 6

through front door lock assembly LH (key cylinder switch) terminals 6 and 5

through grounds M57, M61 and M79.
Then front door lock assembly LH (key cylinder switch) operation signal is supplied

to BCM terminal 22

through main power window and door lock/unlock switch terminal 14.
BCM is connected to main power window and door lock/unlock switch and power window and door lock/unlock
switch RH through a bus.
When the front door switch LH is ON (door is open), ground is supplied

to BCM terminal 47

through front door switch LH terminal 2

through front door switch LH case ground.
When the front door switch RH is ON (door is open), ground is supplied

to BCM terminal 12

through front door switch RH terminal 2

BL-18
POWER DOOR LOCK SYSTEM
Revision: November 20092006 QX56

through front door switch RH case ground.
When the rear door switch LH is ON (door is open), ground is supplied

to BCM terminal 48

through rear door switch LH terminal 2

through rear door switch LH case ground.
When the rear door switch RH is ON (door is open), ground is supplied

to BCM terminal 13

through rear door switch RH terminal 2

through rear door switch RH case ground.
When the back door latch (door ajar switch) is ON (door is open), ground is supplied

to BCM terminal 43

through back door latch (door ajar switch) terminal 7

through back door latch (door ajar switch) terminal 8

through grounds B7 and B19.
OUTLINE
NOTE:
The glass hatch switch will be operational only when the front door lock actuator RH is in the unlock position.
Functions available by operating the door lock and unlock switches on driver door and pas-
senger door

Interlocked with the locking operation of door lock and unlock switch, door lock actuators of all doors and
glass hatch actuator are locked.

Interlocked with the unlocking operation of door lock and unlock switch, door lock actuators of all doors
and glass hatch actuator are unlocked.
Functions available by operating the front door lock assembly LH (key cylinder switch)

Interlocked with the locking operation of door key cylinder, door lock actuators of all doors are locked.

When door key cylinder is unlocked, front door lock assembly LH (actuator) is unlocked.

When door key cylinder is unlocked for the second time within 5 seconds after the first operation, door
lock actuators on all doors are unlocked.
Key reminder door system
When door lock and unlock switch is operated to lock doors with ignition key in key cylinder and any door
open, all door lock actuators are locked and then unlocked.

POWER DOOR LOCK SYSTEMBL-25
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Terminals and Reference Value for BCMEIS005ZB
Work FlowEIS005ZC
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to BL-17, "
System Description" .
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to BL-29,
"Trouble Diagnoses Symptom Chart" .
4. Does power door lock system operate normally? OK: GO TO 5, NG: GO TO 3.
5. Inspection End.
Te r m i n a l Wire
Color Item
Condition Voltage (V)
(Approx.)
12 R/L Front door switch RH Door open (ON) → Door close (OFF) 0 → Battery voltage
13 GR Rear door switch RH Door open (ON) → Door close (OFF) 0 → Battery voltage
22 W/V Bus When ignition switch is ON or power
window timer operates
30 Y/BR Glass hatch switch Glass hatch switched released
→ Glass
hatch switched closed Battery voltage
→ 0
37 B/R Key switch and key lock sole-
noid (insert) Key inserted in IGN key cylinder (ON)
→
Key removed from IGN key cylinder (OFF) Battery voltage
→ 0
39 L CAN-H ——
40 P CAN-L ——
43 R/B Back door latch (door ajar
switch) Door open (ON)
→ Door close (OFF) 0 → Battery voltage
47 SB Front door switch LH Door open (ON) → Door close (OFF) 0 → Battery voltage
48 R/Y Rear door switch LH Door open (ON) → Door close (OFF) 0 → Battery voltage
53 L/W Glass hatch lock actuator Glass hatch switched released
→ Glass
hatch switch pressed 0
→ Battery voltage for 300 msec.
57 Y/R Battery power supply —Battery voltage
59 G Front door lock assembly LH
(actuator) (unlock) Driver door lock knob
(locked → unlocked) 0
→ Battery voltage
65 V All door lock actuators (lock) Driver door lock knob (neutral → lock) 0 → Battery voltage
66 G/Y Front door lock actuator RH,
rear door lock actuators LH/RH
and back door lock actuator
(unlock) Door lock and unlock switch (locked
→
unlocked) 0
→ Battery voltage
67 B Ground ——
70 W/B Battery power supply —Battery voltage
PIIA2344E