remote control INFINITI QX4 2005 Factory User Guide

BCS-12
BCM (BODY CONTROL MODULE)
Revision: October 20052005 QX56
4. Select item to be diagnosed on “SELECT TEST ITEM” screen.
ITEMS OF EACH PART
NOTE:
CONSULT-II will only display systems the vehicle possesses.
LKIA0183E
System and itemCONSULT-II
displayDiagnostic test mode (Inspection by part)
WORK
SUPPORTSELF−
DIAG
RESULTSCAN DIAG
SUPPORT
MNTRDATA
MONITORECU
PA R T
NUMBERACTIVE
TESTCON-
FIGU-
RATION
BCM BCM×× × × ×
Power door lock system DOOR LOCK×××
Rear defoggerREAR
DEFOGGER××
Warning chime BUZZER××
Room lamp timer INT LAMP×××
Remote keyless entry
systemMULTI REMOTE
ENT×××
Headlamp HEAD LAMP×××
Wiper (front/rear) WIPER×××
Turn signal lamp
Hazard lampFLASHER××
Blower fan switch signal
Air conditioner switch
signalAIR
CONDITIONER×
Combination switch COMB SW×
IVIS (NATS) IMMU××
Interior lamp battery
saverBATTERY
SAVER×××
Back door TRUNK××
Theft alarm THEFT ALM×××
Retained accessory
power controlRETAINED PWR×××
Oil pressure switch SIGNAL BUFFER××
Air pressure monitorAIR PRESSURE
MONITOR×× × ×
Panic alarm PANIC ALARM×

BL-1
BODY, LOCK & SECURITY SYSTEM
I BODY
CONTENTS
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Revision: October 20052005 QX56 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

REMOTE KEYLESS ENTRY SYSTEM
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System DescriptionEIS008PX
INPUTS
Power is supplied at all times

to BCM terminal 70

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

to BCM terminal 57

through 15A fuse [No. 22, located in the fuse block (J/B)].
When the key is inserted in the key switch and key lock solenoid, power is supplied

to BCM terminal 37

through key switch and key lock solenoid terminals 3 and 4

through 10A fuse [No. 19, located in the fuse block (J/B)].
When the ignition switch is ACC or ON, power is supplied

to BCM terminal 11

through 10A fuse [No. 4, located in the fuse block (J/B)].
When the ignition switch is ON or START, power is supplied

to BCM terminal 38

through 10A fuse (No. 59, located in the fuse and relay box).
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

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 body grounds B7 and B19.
Keyfob signal is input into the BCM from the remote keyless entry receiver.
The remote keyless entry system controls operation of the

power door lock

back door opener

interior lamp and step lamps

panic alarm

hazard and horn reminder

keyless power window down (open)

auto door lock operation

BL-46
REMOTE KEYLESS ENTRY SYSTEM
Revision: October 20052005 QX56
OPERATING PROCEDURE

When the keyfob is operated, the signal from the keyfob is sent and the remote keyless entry receiver
receives the signal and sends it to the BCM. The BCM only locks/unlocks the doors if the ID number
matches. (Remote control entry functions)

Using the keyfob, the transmitter sends radio waves to the remote keyless entry receiver, which then
sends the received waves to the BCM. Only if the ID number matches does the BCM lock/unlock the
doors. (Remote control door function)

Unless the key is inserted into the ignition key cylinder or one of the doors is opened within 1 minute after
the UNLOCK switch on the keyfob is pressed, all the doors are automatically locked. (Auto lock function)

When a door is locked or unlocked, the vehicle turn signal lamps flash and the horn sounds to verify oper-
ation. (Active check function)

When the key is in the ignition key cylinder (when the key switch is ON) and one of the doors is open, the
door lock function does not work even when the door lock is operated with the keyfob.

Keyfob ID set up is available.

If a keyfob is lost, a new keyfob can be set up. A maximum of 5 IDs can be set up simultaneously.
Remote Control Entry Functions
Operation Description

When a button on the keyfob is operated, the signal is sent from the keyfob and received by the remote
keyless entry receiver.

The received signal is sent to the BCM and compared with the registered ID number.

If the ID number matches, the BCM sends the lock/unlock signal to each door lock actuator.

When the door lock actuators receive this signal, each operates to lock/unlock its door.

BCM locks all doors with input of LOCK signal from keyfob.

When an UNLOCK signal is sent from keyfob once, driver's door will be unlocked.

Then, if an UNLOCK signal is sent from keyfob again within 5 seconds, all other doors will be unlocked.
Remote control entry operation conditions
Auto Lock Function
Operation Description

Unless the key is inserted into the ignition key cylinder, one of the doors is opened, or the keyfob is oper-
ated within 1 minute after a door lock is unlocked by keyfob operation, all the doors are automatically
locked.
The 1 minute timer count is executed by the BCM and after 1 minute, the BCM sends the lock signal to all
doors.
Lock operations are the same as for the remote control entry function.
Remote Control Automatic Back Door Function
Switching from all closed to all open

When a button on the keyfob is operated, the signal is sent from the keyfob and received by the remote
keyless entry receiver.

The received signal is sent to the BCM and compared with the registered ID number.

If the ID number matches, the BCM uses power window serial link communication to send the back door
open signal to the back door control unit

When the back door control unit receives the back door open signal for 0.5 seconds, if the remote control
automatic back door operation enable conditions are met, the warning chime is sounded and the back
door unlock signal is sent to the back door latch using communication.

When the back door latch receives the back door unlock signal, it operates the release actuator and
releases to back door latch.
Keyfob operation Operation condition
Door lock operation (locking)

With key removed (key switch: OFF)

Closing all doors (door switch: OFF)
Door lock operation (unlocking) With key removed (key switch: OFF)

REMOTE KEYLESS ENTRY SYSTEM
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The back door control unit operates the back door motor to open the back door. (At this time, speed con-
trol, input reverse, and overload reverse control are executed.)

When the back door is opened to the fully open position, the full-open position is detected with the rotation
sensor, the back door motor is stopped.

The door held by the back door stays at the full open position.
Full open → full closed operation

When a button of the keyfob is operated, the signal is sent from the keyfob and received by the remote
keyless entry receiver.

The received signal is sent to the BCM and compared with the registered ID number.

If the ID number matches, the BCM uses power window serial link communication to send the back door
close request signal to the back door control unit.

When the back door control unit receives the back door close request signal for 0.5 seconds, if the remote
control automatic back door operation enable conditions are met, the warning chime is sounded and the
back door motor begins closing the back door.

The back door control unit operates the magnetic clutch and the back door motor to close the back door.
(At this time, the back door control unit executes speed control, input reverse, and overload reverse con-
trol.)

When the back door comes to the half-latch state, the back door latch detects the half-latch state through
half-latch switch operation. The back door latch latches the back door.
For the automatic back door system operation enable conditions, refer to BL-99, "
AUTOMATIC BACK DOOR
SYSTEM" .
Active Check Function
Operation Description
When a door is locked or unlocked by keyfob operation, the vehicle turn signals flash and the horn sounds to
verify operation.

When a button on the keyfob is operated, the signal is sent from the remote controller and received by the
keyless remote entry receiver.

The received signal is sent to the BCM and compared with the registered ID number.

If the ID number matches, the BCM sends the turn signal flashing and horn signal to the IPDM E/R.

The IPDM E/R flashes the turn signal lamps and sounds the horn for each keyfob operation.
Operating function of hazard and horn reminder
Hazard and Horn Reminder
BCM output to IPDM E/R for horn reminder signal as DATA LINE (CAN-H and CAN-L).
The hazard and horn reminder has C mode (horn chirp mode) and S mode (non-horn chirp mode).
How to change hazard and horn reminder mode
With CONSULT-II
Hazard and horn reminder can be changed using “WORK SUPPORT” mode in “MULTI ANSWER BACK SET".
Without CONSULT-II
Refer to Owner's Manual for instructions.
Interior Lamp Operation
When the following input signals are both supplied:

all door switches are in the OFF position. (when all the doors are closed);

interior lamp switch is in DOOR position.
Remote keyless entry system turns on interior lamp and ignition keyhole illumination (for 30 seconds) with
input of UNLOCK signal from keyfob.
For detailed description, refer to LT-131, "
ROOM LAMP TIMER OPERATION" .
C mode S mode
Keyfob operation Lock Unlock Lock Unlock
Hazard warning lamp
flashTwic e O nc e Twic e —
Horn sound Once — — —

REMOTE KEYLESS ENTRY SYSTEM
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CONSULT-II Function (BCM)EIS0 08 Q3
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II Inspection ProcedureEIS0 08 Q4
CONSULT-II can display each diagnostic item using the following diagnostic test modes: work support, data
monitor, active test, and CAN diagnostic support monitor through data reception and command transmission
via the BCM communication line.
“MULTI REMOTE ENT”
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 the
data link connector.
3. Turn ignition switch ON.
4. Touch “START (NISSAN BASED VHCL)".
BCM
diagnostic test itemDiagnostic mode Description
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the
BCM for setting the status suitable for required operation, input/output sig-
nals are received from the BCM and received date is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TESTOperation of electrical loads can be checked by sending drive signal to
them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTRThe result 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

REMOTE KEYLESS ENTRY SYSTEM
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ID Code Entry ProcedureEIS008QJ
KEYFOB ID SET UP WITH CONSULT-II
NOTE:

If a keyfob is lost, the ID code of the lost keyfob must be erased to prevent unauthorized use. A
specific ID code can be erased with CONSULT-II. However, when the ID code of a lost keyfob is not
known, all controller ID codes should be erased. After all ID codes are erased, the ID codes of all
remaining and/or new keyfobs must be re-registered.

When registering an additional keyfob, the existing ID codes in memory may or may not be erased.
If five ID codes are stored in memory when an additional code is registered, only the oldest code is
erased. If less than five codes are stored in memory when an additional code is registered, the
new ID code is added and no ID codes are erased.

Entry of a maximum of five ID codes is allowed. When more than five codes are entered, the oldest
ID code will be erased.

Even if the same ID code that is already in memory is input, the same ID code can be entered. The
code is counted as an additional code.
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 the
data link connector.
3. Turn ignition switch ON.
4. Touch “START (NISSAN BASED VHCL)”.
5. Touch “BCM”.
If "BCM" is not indicated, refer to GI-39, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BBIA0336E
BCIA0029E
BCIA0030E

BL-100
AUTOMATIC BACK DOOR SYSTEM
Revision: October 20052005 QX56
System DescriptionEIS0 08 R4
NOTE:
The automatic back door system must be initialized by fully closing the back door anytime the battery
or the back door control unit has been disconnected.
The automatic back door system consists of a one piece unit that combines the back door control unit along
with the back door motor, back door clutch and the back door encoder. The back door latch contains a lock
function that can control the two functions of automatic back door latch closure and electrical opener with a
single motor when you close the back door to the halfway-state.

Back door auto closure
When the back door is closed to the halfway state (half-latch) position, the motor automatically drives to
rotate the latch lever and pull it in from half latched to full latched.

Power back door
With the back door closed, press the power liftgate switch or press the remote keyless entry button, or pull
the back door handle with the back door unlocked, the back door latch motor opens the locking plate and
releases the latch. The back door motor then raises the door to the full open position.
With the back door fully open, press the power liftgate switch, remote keyless entry button or the back
door close switch, the back door motor closes the door to the half-latch state. The back door latch motor
then drives the latch to the full close position.
At the onset of each power open or power close application, the hazard lamps will flash 3 times and the
warning chime will sound 3 times lasting a total of 2 seconds.
OPERATION DESCRIPTION
Power Liftgate Switch Operation (Fully Closed → Fully Open Operation)

When the power liftgate switch is pressed, back door control unit terminal 23 receives the signal.

The back door control unit checks the A/T selector lever (P position) through terminal 18, vehicle speed
through terminal 21, ignition status through terminal 7, glass hatch is closed through terminal 17 and bat-
tery voltage is present through terminal 3.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a 5 volt signal through terminal 6 and grounds terminal 9 to sound the warning chime, sends
a signal to the BCM through terminal 4 to flash the hazard lamps and unlocks the back door latch through
terminal 12.

The back door control unit supplies power to the magnetic clutch and the back door motor and moves the
back door in the open direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door is opened to the full-open position, the full-open position is detected by the encoder,
and the back door control unit switches the back door motor OFF and the magnetic clutch is pulsed and
then turned OFF.

The back door is held in the fully open position by the gas stays.
Remote Keyless Entry Operation (Fully Closed → Fully Open Operation)

When the remote keyless entry button is pressed for at least 0.5 seconds, back door control unit terminal
21 receives the signal.

The back door control unit checks the A/T selector lever (P position) through terminal 18, vehicle speed
through terminal 21, ignition status through terminal 7, glass hatch is closed through terminal 17 and bat-
tery voltage is present through terminal 3.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a 5 volt signal through terminal 6 and grounds terminal 9 to sound the warning chime, sends
a signal to the BCM through terminal 4 to flash the hazard lamps and unlocks the back door latch through
terminal 12.

The back door control unit supplies power to the magnetic clutch and the back door motor and moves the
back door in the open direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door is opened to the full-open position, the full-open position is detected by the encoder,
and the back door control unit switches the back door motor OFF and the magnetic clutch is pulsed and
then turned OFF.

The back door is held in the fully open position by the gas stays.

AUTOMATIC BACK DOOR SYSTEM
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Back Door Handle Switch Operation (Fully Closed → Fully Open Operation)

When the back door handle is pulled, back door control unit terminal 26 receives the signal.

The back door control unit checks that the back door is unlocked and checks the A/T selector lever (P
position) through terminal 18, vehicle speed through terminal 21, ignition status through terminal 7, glass
hatch is closed, battery voltage and back door close switch position through terminal 13.

When the back door control unit receives the signal, if all auto back door operating enable conditions are
met, it sends a 5 volt signal through terminal 6 and grounds terminal 9 to sound the warning chime, sends
a signal to the BCM through terminal 4 to flash the hazard lamps and unlocks the back door latch through
terminal 12.

The back door control unit supplies power to the magnetic clutch and the back door motor and moves the
back door in the open direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door is opened to the full-open position, the full-open position is detected by the encoder,
and the back door control unit switches the back door motor OFF and the magnetic clutch is pulsed and
then turned OFF.

The back door is held in the fully open position by the gas stays.
Power Liftgate Switch Operation (Fully Open → Fully Closed Operation)

When the power liftgate switch is pressed, the back door control unit terminal 23 receives the signal.

The back door control units checks door position through the rotary encoder.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime and sends a
signal to the BCM through terminal 4 to flash the hazard lamps.

The back door control unit supplies power to the magnetic clutch and the back door motor and move the
back door in the close direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door reaches the half-latch state, the half-latch switch detects this and the signal is sent to
the back door control unit terminal 22.

When the back door control unit receives the half latch switch signal, it switches OFF the back door motor
and the magnetic clutch and operates the cinch latch motor.

When the back door latch operates and full close is detected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door auto closure operation ends
and the door is fully closed.
Remote Keyless Entry Operation (Fully Open → Fully Closed Operation)

When the remote keyless entry switch is pressed for at least 0.5 seconds, the back door control unit termi-
nal 21 receives the signal.

The back door control units checks door position through the rotary encoder.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime and sends a
signal to the BCM through terminal 4 to flash the hazard lamps.

The back door control unit supplies power to the magnetic clutch and the back door motor and move the
back door in the close direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door reaches the half-latch state, the half-latch switch detects this and the signal is sent to
the back door control unit terminal 22.

When the back door control unit receives the half latch switch signal, it switches OFF the back door motor
and the magnetic clutch and operates the cinch latch motor.

When the back door latch operates and full close is detected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door auto closure operation ends
and the door is fully closed.

BL-102
AUTOMATIC BACK DOOR SYSTEM
Revision: October 20052005 QX56
Back Door Close Switch Operation (Fully Open → Fully Closed Operation)

When the back door close switch is pressed, the back door control unit terminal 8 receives the signal.

The back door control units checks back door close switch terminal 13 status and door position (must be
fully opened), through rotary encoder and battery voltage.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime and sends a
signal to the BCM through terminal 4 to flash the hazard lamps.

The back door control unit supplies power to the magnetic clutch and the back door motor and move the
back door in the close direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door reaches the half-latch state, the half-latch switch detects this and the signal is sent to
the back door control unit terminal 22.

When the back door control unit receives the half latch switch signal, it switches OFF the back door motor
and the magnetic clutch and operates the cinch latch motor.

When the back door latch operates and full close is detected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door auto closure operation ends
and the door is fully closed.
Reversal

If the power liftgate switch, remote keyless entry switch or the back door close switch is pressed during
back door power open and close operation, the back door will reverse direction.

If the outside handle switch is pulled during power open or power close, the power back door will automat-
ically stop and go to manual mode.
Anti-Pinch Function

During auto open or close operation, if an object is detected in the door's path, the back door operates in
the reverse direction until fully closed or open to prevent pinching.

During auto close operation, if an object is detected by the pinch strips in the door's path, the back door
operates in the open direction until it is fully open.

During auto cinch latch operation, if an object is detected by the pinch strips in the door's path, the back
door operates depending on the back door close switch position. If the back door close switch is in the
OFF position, the back door operates in the open direction until it is fully open. If the back door close
switch is in the ON position, the back door will reverse only until the latch is fully released.

If the pinch strips are present but are not functioning properly (permanently sensing a pinch), the auto-
matic back door system will operate in the open direction only.

If the pinch strips are not connected to the automatic back door system, it will not operate.
Gas Stay Check

During each power open operation, the back door control unit monitors motor current draw to determine if
the gas stays are functioning properly.

If a failure of the gas stays is detected, the back door control unit will close the back door while sounding
the warning chime.
Warning Functions

The warning chime is sounded according to the back door operating state, operations, and conditions.