2006 INFINITI QX56 keyless entry

LT-2Revision: November 20092006 QX56
System Description ..............................................
... 48
OUTLINE .......................................................... ... 48
COMBINATION SWITCH READING FUNCTION ... 48
EXTERIOR LAMP BATTERY SAVER CONTROL ... 48
DELAY TIMER FUNCTION .............................. ... 48
CAN Communication System Description ........... ... 48
Major Components and Functions ....................... ... 48
Schematic ............................................................ ... 49
Wiring Diagram — AUTO/L — ............................. ... 50
Terminals and Reference Values for BCM ........... ... 53
Terminals and Reference Values for IPDM E/R ... ... 54
How to Proceed With Trouble Diagnosis ............. ... 55
Preliminary Check ............................................... ... 55
SETTING CHANGE FUNCTIONS .................... ... 55
CHECK POWER SUPPLY AND GROUND CIR-
CUIT ................................................................. ... 55
CONSULT-II Function (BCM) ............................... ... 57
CONSULT-II OPERATION ................................ ... 57
WORK SUPPORT ............................................ ... 58
DATA MONITOR ............................................... ... 58
ACTIVE TEST .................................................. ... 59
SELF-DIAGNOSTIC RESULTS ........................ ... 59
CONSULT-II Function (IPDM E/R) ....................... ... 60
CONSULT-II OPERATION ................................ ... 60
DATA MONITOR ............................................... ... 61
ACTIVE TEST .................................................. ... 61
Trouble Diagnosis Chart by Symptom ................. ... 62
Lighting Switch Inspection ................................... ... 62
Optical Sensor System Inspection ....................... ... 63
Optical Sensor ..................................................... ... 64
REMOVAL AND INSTALLATION ...................... ... 64
HEADLAMP AIMING CONTROL ........................... ... 65
System Description .............................................. ... 65
Wiring Diagram — H/AIM — ................................ ... 66
Headlamp Aiming Switch ..................................... ... 68
REMOVAL AND INSTALLATION ...................... ... 68
Switch Circuit Inspection ..................................... ... 68
FRONT FOG LAMP ............................................... ... 69
Component Parts and Harness Connector Location ... 69
System Description .............................................. ... 69
OUTLINE .......................................................... ... 69
COMBINATION SWITCH READING FUNCTION ... 70
EXTERIOR LAMP BATTERY SAVER CONTROL ... 70
CAN Communication System Description ........... ... 70
Wiring Diagram — F/FOG — ............................... ... 71
Terminals and Reference Values for BCM ........... ... 73
Terminals and Reference Values for IPDM E/R ... ... 74
How to Proceed With Trouble Diagnosis ............. ... 74
Preliminary Check ............................................... ... 75
CHECK POWER SUPPLY AND GROUND CIR-
CUIT ................................................................. ... 75
CONSULT-II Functions ........................................ ... 76
Front Fog Lamps Do Not Illuminate (Both Sides) ... 76
Front Fog Lamp Does Not Illuminate (One Side) ... 77
Aiming Adjustment ............................................... ... 78
Bulb Replacement ............................................... ... 79
FRONT FOG LAMP .......................................... ... 79INSTALLATION ................................................
... 79
Removal and Installation ...................................... ... 79
FRONT FOG LAMP .......................................... ... 79
INSTALLATION ................................................ ... 79
TURN SIGNAL AND HAZARD WARNING LAMPS ... 80
Component Parts and Harness Connector Location ... 80
System Description .............................................. ... 80
OUTLINE .......................................................... ... 80
TURN SIGNAL OPERATION ............................ ... 80
HAZARD LAMP OPERATION .......................... ... 81
REMOTE KEYLESS ENTRY SYSTEM OPERA-
TION ................................................................. ... 82
COMBINATION SWITCH READING FUNCTION ... 82
CAN Communication System Description ........... ... 82
Schematic ............................................................ ... 83
Wiring Diagram — TURN — ................................ ... 84
Terminals and Reference Values for BCM ........... ... 87
How to Proceed With Trouble Diagnosis ............. ... 88
Preliminary Check ................................................ ... 89
CHECK POWER SUPPLY AND GROUND CIR-
CUIT .................................................................. ... 89
CONSULT-II Function (BCM) ............................... ... 90
CONSULT-II OPERATION ................................ ... 90
DATA MONITOR ............................................... ... 91
ACTIVE TEST ................................................... ... 91
Front Turn Signal Lamp Does Not Operate ......... ... 92
Door Mirror Turn Signal Lamp Does Not Operate ... 93
Rear Turn Signal Lamp Does Not Operate .......... ... 94
Hazard Warning Lamp Does Not Operate But Turn
Signal Lamps Operate ......................................... ... 95
Turn Signal Indicator Lamp Does Not Operate .... ... 96
Bulb Replacement ................................................ ... 97
TURN SIGNAL LAMP (FRONT) ....................... ... 97
TURN SIGNAL LAMP (REAR) .......................... ... 97
Removal and Installation ...................................... ... 97
FRONT TURN SIGNAL LAMP .......................... ... 97
REAR TURN SIGNAL LAMP ............................ ... 97
LIGHTING AND TURN SIGNAL SWITCH ............. ... 98
Removal and Installation ...................................... ... 98
REMOVAL ........................................................ ... 98
INSTALLATION ................................................ ... 98
HAZARD SWITCH .................................................. ... 99
Removal and Installation ...................................... ... 99
REMOVAL ........................................................ ... 99
INSTALLATION ................................................ ... 99
COMBINATION SWITCH ....................................... .100
Wiring Diagram — COMBSW — ......................... .100
Combination Switch Reading Function ................ .101
CONSULT-II Function (BCM) ............................... .101
CONSULT-II OPERATION ................................ .101
DATA MONITOR ............................................... .102
Combination Switch Inspection ............................ .103
Removal and Installation ...................................... .105
Switch Circuit Inspection ...................................... .105
STOP LAMP ........................................................... .106
System Description .............................................. .106
Wiring Diagram — STOP/L — ............................. .107
Bulb Replacement ................................................ .108
HIGH-MOUNTED STOP LAMP ........................ .108

LT-82
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: November 20092006 QX56

through door mirror LH and RH terminal 11

to grounds M57, M61 and M79 and

to rear turn signal lamp LH terminal 1

through rear turn signal lamp LH terminal 3

to grounds B7 and B19, and

to rear turn signal lamp RH terminal 4

through rear turn signal lamp RH terminal 6

to grounds B117 and B132.
BCM sends signal to combination meter through CAN communication lines, and turns on turn signal indicator
lamps within combination meter.
REMOTE KEYLESS ENTRY SYSTEM OPERATION
Power is supplied at all times

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

to BCM terminal 70, and

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

to combination meter terminal 8.
Ground is supplied

to BCM terminal 67 and

to combination meter terminal 17

through grounds M57, M61 and M79.
When the remote keyless entry system is triggered by input from the keyfob, the BCM, interpreting it as turn
signal is ON, outputs turn signal from BCM terminals 60 and 61.
The BCM supplies power

through BCM terminals 60 and 61

to front turn/fog lamp LH and RH terminal 2

through front turn/fog lamp LH and RH terminal 3

to grounds E9, E15 and E24, and

to door mirror LH and RH terminal 15

through door mirror LH and RH terminal 11

to grounds M57, M61 and M79 and

to rear turn signal lamp LH terminal 1

through rear turn signal lamp LH terminal 3

to grounds B7 and B19, and

to rear turn signal lamp RH terminal 4

through rear turn signal lamp RH terminal 6

to grounds B117 and B132.
BCM sends signal to combination meter through CAN communication lines, and turns on turn signal indicator
lamps within combination meter.
With power and input supplied, the BCM controls the flashing of the hazard warning lamps when keyfob is
used to activate the remote keyless entry system.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
CAN Communication System DescriptionEKS00B9R
Refer to LAN-26, "CAN COMMUNICATION" .

POWER SUPPLY ROUTING CIRCUITPG-17
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Revision: November 2009 2006 QX56
Fuse EKS00GKH

If fuse is blown, be sure to eliminate cause of incident before
installing new fuse.

Use fuse of specified rating. Never use fuse of more than speci-
fied 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 Link EKS00GKI
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 incident.

Never wrap outside of fusible link with vinyl tape.

Never let fusible link touch any other wiring harness, vinyl or rubber parts.
Circuit Breaker (Built Into BCM)EKS00GKJ
For example, when current is 30A, the circuit is broken within 8 to 20
seconds.
A circuit breaker is used for the following systems:

Power windows

Power door locks

Remote keyless entry system

Power sunroof

Rear window wiper
CEL083
SBF284E

HARNESSPG-63
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Revision: November 2009 2006 QX56
HORNWW Horn
HSEAT SE Heated Seat
ICC ACS Intelligent Cruise Control
ICCBOF EC ICC Brake Switch
ICC/BS EC ICC Steering Switch
ICC/SW EC ICC Brake Switch
I/MIRR GW Inside Mirror (Auto Anti-Dazzling Mirror)
IATS EC Intake Air Temperature Sensor
IGNSYS EC Ignition System
ILL LT Illumination
INJECT EC Injector
INT/L LT Room/Map, Vanity, Cargo, Personal, Foot, Step, and Puddle Lamps
KEYLES BL Remote Keyless Entry System
KS EC Knock Sensor
MAFS EC Mass Air Flow Sensor
MAIN EC Main Power Supply and Ground Circuit
METER DI Speedometer, Tachometer, Temp. and Fuel Gauges
MIL/DL EC Malfunction Indicator Lamp
MIRROR GW Door Mirror
NATS BL Nissan Anti-Theft System
NAVI AV Navigation System
O2H2B1 EC Rear Heated Oxygen Sensor 2 Heater Bank 1
O2H2B2 EC Rear Heated Oxygen Sensor 2 Heater Bank 2
O2S2B1 EC Heated Oxygen Sensor 2 Bank 1
O2S2B2 EC Heated Oxygen Sensor 2 Bank 2
P/SCKT WW Power Socket
PGC/V EC EVAP Canister Purge Volume Control Solenoid Valve
PHASE EC Camshaft Position Sensor (PHASE) (Bank 1)
PNP/SW EC Park/Neutral Position Switch
POS EC Crankshaft Position Sensor (POS)
POWER PG Power Supply Routing
PRE/SE EC EVAP Control System Pressure Sensor
PS/SEN EC Power Steering Pressure Sensor
R/VIEW DI Rear View Monitor
RP/SEN EC Refrigerant Pressure Sensor
SEN/PW EC Sensor Power Supply
SHIFT AT A/T Shift Lock System
SONAR DI Rear Sonar System
SROOF RF Sunroof
SRS SRS Supplemental Restraint System
START SC Starting System
STOP/L LT Stop Lamp
T/TOW LT Trailer Tow
T/WARN WT Low Tire Pressure Warning System
TAIL/L LT Parking, License and Tail Lamps
T/F TFTransfer Case
TPS1 EC Throttle Position Sensor
TPS2 EC Throttle Position Sensor
TPS3 EC Throttle Position Sensor
TRNSCV BL HOMELINK® Universal Transceiver
TURN LT Turn Signal and Hazard Warning Lamps
VDC BRC Vehicle Dynamic Control System

WT-1
ROAD WHEELS & TIRES
E SUSPENSION
CONTENTS
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Revision: November 2009 2006 QX56
PRECAUTIONS .....................................................
..... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 2
PREPARATION ...................................................... ..... 3
Special Service Tool ............................................ ..... 3
Commercial Service Tools ................................... ..... 3
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... ..... 4
NVH Troubleshooting Chart ................................ ..... 4
WHEEL .................................................................. ..... 5
Inspection ............................................................ ..... 5
WHEEL AND TIRE ASSEMBLY ............................ ..... 6
Balancing Wheels ............................................... ..... 6
REMOVAL ........................................................ ..... 6
WHEEL BALANCE ADJUSTMENT ................. ..... 6
Rotation ............................................................... ..... 7
LOW TIRE PRESSURE WARNING SYSTEM ....... ..... 8
System Components ........................................... ..... 8
System Description ............................................. ..... 8
TRANSMITTER ................................................ ..... 8
REMOTE KEYLESS ENTRY RECEIVER ........ ..... 8
BCM (BODY CONTROL MODULE) ................. ..... 9
WARNING LAMP AND BUZZER ..................... ..... 9
COMBINATION METER .................................. ..... 9
DISPLAY UNIT ................................................. ..... 9
CAN COMMUNICATION ....................................... ... 10
System Description ............................................. ... 10
TROUBLE DIAGNOSES ....................................... ....11
Wiring Diagram – T/WARN – .............................. .... 11
Terminals and Reference Values for BCM .......... ... 13
ID Registration Procedure ................................... ... 14
ID REGISTRATION WITH TRANSMITTER
ACTIVATION TOOL ......................................... ... 14
ID REGISTRATION WITHOUT TRANSMITTER
ACTIVATION TOOL ......................................... ... 16
Transmitter Wake Up Operation .......................... ... 18
WITH TRANSMITTER ACTIVATION TOOL ..... ... 18
CONSULT-II Function (BCM) .............................. ... 19
Self-Diagnosis ..................................................... ... 20DESCRIPTION .................................................
... 20
FUNCTION ....................................................... ... 20
CONSULT-II ...................................................... ... 20
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ................................................... ... 22
INTRODUCTION .............................................. ... 22
WORK FLOW ................................................... ... 22
Preliminary Check ............................................... ... 23
Malfunction Code/Symptom Chart ....................... ... 24
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ITEMS ..................................................................... ... 26
Inspection 1: Transmitter or Control Unit (BCM) .. ... 26
MALFUNCTION CODE NO. 21, 22, 23 OR 24
(DTC C1708, C1709, C1710 OR C1711) ......... ... 26
Inspection 2: Transmitter - 1 ................................ ... 26
MALFUNCTION CODE NO. 31, 32, 33, 34, 41,
42, 43, 44, 45, 46, 47 OR 48 ............................ ... 26
Inspection 3: Transmitter - 2 ................................ ... 27
MALFUNCTION CODE NO. 35, 36, 37 OR 38 ... 27
Inspection 4: Vehicle Speed Signal ..................... ... 28
MALFUNCTION CODE NO. 52 (DTC C1729) . ... 28
TROUBLE DIAGNOSIS FOR SYMPTOMS ........... ... 29
Inspection 1: Warning Lamp Does Not Come On
When Ignition Switch Is Turned On ..................... ... 29
Inspection 2: Low Tire Pressure Warning Lamp
Stays On When Ignition Switch Is Turned On ...... ... 30
Inspection 3: Warning Lamp Flashes When Ignition
Switch Is Turned On ............................................ ... 32
Inspection 4: Hazard Warning Lamp Flashes When
Ignition Switch Is Turned On ............................... ... 33
Inspection 5: “TIRE PRESSURE” Information In
Display Unit Does Not Exist ................................. ... 34
Inspection 6: ID Registration Cannot Be Completed ... 35
REMOVAL AND INSTALLATION .......................... ... 36
Transmitter (Pressure Sensor) ............................ ... 36
REMOVAL ........................................................ ... 36
INSTALLATION ................................................ ... 36
SERVICE DATA AND SPECIFICATIONS (SDS) ... ... 38
Road Wheel ............................................................ 38
Tire ...................................................................... ... 38

WT-8
LOW TIRE PRESSURE WARNING SYSTEM
Revision: November 20092006 QX56
LOW TIRE PRESSURE WARNING SYSTEMPFP:40300
System ComponentsEES001I2
System DescriptionEES001I3
TRANSMITTER
A sensor-transmitter integrated with a valve is installed on a wheel,
and transmits a detected air pressure signal in the form of a radio
wave.
REMOTE KEYLESS ENTRY RECEIVER
Receives the air pressure signal transmitted by the transmitter in
each wheel.
WEIA0081E
WEIA0137E
LEIA0069E

LOW TIRE PRESSURE WARNING SYSTEMWT-9
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Revision: November 2009 2006 QX56
BCM (BODY CONTROL MODULE)
Reads the air pressure signal received by the remote keyless entry
receiver, and controls the low tire pressure warning lamp and the
buzzer operations as shown below. It also has a judgement function
to detect a system malfunction.
WARNING LAMP AND BUZZER
Indicates low tire pressure or system malfunction.
COMBINATION METER
The combination meter receives tire pressure status from the BCM using CAN communication. When a low
tire pressure condition is sensed by the BCM, the combination meter low tire pressure warning lamp and
buzzer are activated.
DISPLAY UNIT
Displays the air pressure of each tire.

After the ignition switch is turned on, the pressure values will not
be displayed until the data of each wheel is received.
LEIA0068E
ConditionWarning lamp Buzzer
Less than 193 kPa (2.0 kg/cm
2 , 28 psi)
[Flat tire] ON
OFF
System malfunction After key ON,
flashes once per second for 1
minute, then stays ON. OFF
System normal ON for 1 second
after ignition ON OFF
LEIA0055E
WEIA0082E

TROUBLE DIAGNOSESWT-13
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Revision: November 2009 2006 QX56
Terminals and Reference Values for BCMEES001I6
( ): Wire colorTerminals
ItemCondition Voltage (V)
(Approx.)
+ –
15 (L/W)
Ground Tire pressure warning check
connector
—
5
18 (P) Remote keyless entry receiver
(Ground) —
0
19 (V/W) Remote keyless entry receiver
(Power supply) Stand-by
Press any of the electronic
switches
20 (G/W) Remote keyless entry receiver
(Signal) Stand-by
Press any of the electronic
switches
38 (W/L) Ignition switch Ignition switch ON or START Battery voltage
39 (L) Data line (CAN-H) ——
40 (P) Data line (CAN-L) ——
67 (B) GND —0
70 (W/B) Battery power supply —Battery voltage
OCC3879D
OCC3882D
OCC3881D
OCC3880D