key fob battery INFINITI FX35 2004 Service Manual

BCS-8
BCM (BODY CONTROL MODULE)
Revision: 2004 November 2004 FX35/FX45
MAJOR COMPONENTS AND CONTROL SYSTEM
System Input Output
Remote control entry system key fob

All-door locking actuator

Turn signal lamp (LH, RH)
Power door lock system

Power window main switch
(door lock and unlock switch)

Power window sub switch (passenger side)
(door lock and unlock switch)All-door locking actuator
Power supply (IGN) to power window, sunroof Ignition power supply Power window and sunroof system
Power supply (BAT) to power window, sunroof
and power seatBattery power supplyPower window, sunroof system and
power seat
Panic alarm

Key switch

Key fobIPDM E/R
Theft warning system

All-door switch

Hood switch

Key fob

Power window main switch (door lock and
unlock switch)

IPDM E/R

Security indicator lamp
Auto light system

Optical sensor

Combination switchIPDM E/R
Battery saver control

Ignition switch

Combination switchIPDM E/R
Headlamp Combination switch IPDM E/R
Tail lamp Combination switch IPDM E/R
Fog lamp Combination switch IPDM E/R
Turn signal lamp Combination switch

Turn signal lamp

Combination meter
Hazard lamp Hazard switch

Turn signal lamp

Combination meter
Room lamp timer

Key switch

key fob

Power window main switch (door lock and
unlock switch)

Front door switch driver side

All-door switchInterior room lamp
Key warning chime

Key switch

Front door switch driver sideCombination meter
(warning buzzer)
Light warning chime

Combination switch

Front door switch driver sideCombination meter
(warning buzzer)
Seat belt warning chime

Combination meter (Seat belt buckle
(driver side) switch)

Ignition switchCombination meter
(warning buzzer)
Vehicle-speed-sensing intermittent wiper

Combination switch

Combination meterIPDM E/R
Rear intermittent wiper Combination switch Rear wiper motor
Rear window defogger

Rear window defogger switch

Ignition switchIPDM E/R
A/C switch signal Unified meter and A/C amp. ECM
Blower fan switch signal Unified meter and A/C amp. ECM

BL-2Revision: 2004 November 2004 FX35/FX45Trouble Diagnosis Chart by Symptom .................... 41
Check Door Switch ................................................. 42
CHECK DOOR SWITCH (EXCEPT BACK DOOR
SWITCH) ............................................................. 42
CHECK BACK DOOR SWITCH .......................... 44
Check Key Switch ................................................... 46
Check Door Lock and Unlock Switch ..................... 48
Check Door Lock Actuator (Driver side) ................. 50
Check Door Lock Actuator (Passenger Side and
Rear LH/RH) ........................................................... 51
Check Fuel Lid Opener Actuator ............................ 52
Check Front Door Key Cylinder Switch (Lock) ....... 53
Check Front Door Key Cylinder Switch (Unlock) .... 54
Check Select Unlock Relay Circuit ......................... 55
REMOTE KEYLESS ENTRY SYSTEM ..................... 56
Component Parts and Harness Connector Location ... 56
System Description ................................................. 57
INPUTS ............................................................... 57
OPERATED PROCEDURE ................................. 58
CAN Communication System Description .............. 59
CAN Communication Unit ....................................... 59
Schematic ............................................................... 60
Wiring Diagram — KEYLES— ................................ 61
FIG. 1 ................................................................... 61
FIG. 2 ................................................................... 62
FIG. 3 ................................................................... 63
Terminals and Reference Value for BCM ................ 64
Terminals and Reference Value for IPDM E/R ........ 65
CONSULT-II Function ............................................. 65
CONSULT-II INSPECTION PROCEDURE .......... 65
CONSULT-II APPLICATION ITEMS .................... 66
Work Flow ............................................................... 68
Trouble Diagnosis Chart by Symptom .................... 69
Check Key Fob Battery and Function ..................... 71
Check ACC Switch ................................................. 72
Check Door Switch ................................................. 73
CHECK DOOR SWITCH (EXCEPT BACK DOOR
SWITCH) ............................................................. 73
CHECK BACK DOOR SWITCH .......................... 75
Check Key Switch ................................................... 77
Check IPDM E/R Operation .................................... 78
Check Hazard Function .......................................... 79
Check Horn Function .............................................. 79
Check Headlamp Function ..................................... 79
Check Map Lamp and Ignition Keyhole Illumination
Function .................................................................. 79
ID Code Entry Procedure ....................................... 80
KEY FOB ID SET UP WITH CONSULT-II ........... 80
KEY FOB ID SET UP WITHOUT CONSULT-II .... 82
Key Fob Battery Replacement ................................ 83
INTELLIGENT KEY SYSTEM ................................... 84
Component Parts and Harness Connector Location ... 84
System Description ................................................. 86
DOOR LOCK FUNCTION ................................... 86
REMOTE CONTROL ENTRY FUNCTIONS ........ 87
ENGINE STARTUP FUNCTION .......................... 88
WARNING AND ALARM FUNCTION .................. 89
CHANGE SETTINGS FUNCTION ....................... 92
INTELLIGENT KEY REGISTRATION .................. 92STEERING LOCK UNIT REGISTRATION ........... 92
CAN Communication System Description .............. 93
CAN Communication Unit ....................................... 93
Schematic ............................................................... 94
Wiring Diagram — I/KEY— ..................................... 96
Terminals and Reference Value for INTELLIGENT
KEY UNIT .............................................................109
Terminals and Reference Value for Steering Lock
unit ........................................................................ 111
Terminals and Reference Value for BCM .............. 111
Terminals and Reference Value for IPDM E/R ......112
Diagnosis Procedure .............................................113
WORK FLOW ....................................................113
CONSULT-II Functions .........................................114
CONSULT-II Inspection Procedure .......................114
BASIC OPERATION ..........................................114
CONSULT-II Application Items ..............................115
WORK SUPPORT .............................................115
SELF-DIAGNOSTIC RESULTS .........................115
DATA MONITOR ................................................115
ACTIVE TEST ....................................................116
List of Operation Related Parts .............................117
Trouble Diagnosis Symptom Chart .......................118
ALL FUNCTIONS OF THE INTELLIGENT KEY
ARE NOT OPERATING .....................................118
REMOTE CONTROL ENTRY FUNCTION MAL-
FUNCTION ........................................................118
DOOR LOCK FUNCTION MALFUNCTION .......119
ENGINE START FUNCTION MALFUNCTION ..120
WARNING CHIME FUNCTION MALFUNCTION .120
Check CAN Communication System Inspection ...123
Check Intelligent Key Unit Power Supply and
Ground Circuit .......................................................124
Check Key Switch (Intelligent Key Unit Input) .......124
Check Key Switch (BCM Input) .............................126
Check Ignition Knob Switch ..................................127
Check Door Switch ...............................................128
CHECK DOOR SWITCH (EXCEPT BACK DOOR
SWITCH) ............................................................128
CHECK BACK DOOR SWITCH .........................129
Check Unlock Sensor ...........................................131
Check Door Request Switch .................................132
Check Intelligent Key Warning Buzzer ..................134
Check Outside Key Antenna .................................135
Check Inside Key Antenna ....................................138
Check Steering Lock Unit ......................................139
Check Stop Lamp Switch ......................................141
Check Detention Switch ........................................142
Check Select Unlock Relay ...................................144
Check Hazard Function ........................................145
Check Horn Function ............................................145
Check Headlamp Function ....................................145
Check IPDM E/R Operation ..................................145
Removal and Installation of Intelligent Key Unit ....146
REMOVAL ..........................................................146
INSTALLATION ..................................................146
Intelligent Key Inspection ......................................147
INTELLIGENT KEY DISASSEMBLY AND

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REMOTE KEYLESS ENTRY SYSTEM
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for BCMAIS004MF
*1 : In the state that hazard reminder operates.
*2 : In the state that room lamp switch is in “DOOR” position.TERMI-
NALWIRE
COLORITEM CONDITIONVOLTAGE (V)
Approx.
1PUKey ring illumination output sig-
nal Key ring illumination is lighting. Battery voltage
Key ring illumination is being turned off. 0
11 LG/R Ignition switch Ignition switch is in ACC or ON position Battery voltage
12 P/BFront door switch (Passenger
side)ON (door open) → OFF (door closed) 0 → Battery voltage
13 P/L Rear door switch RH ON (door open) → OFF (door closed) 0 → Battery voltage
37 B/W Key switchON (Key is inserted in IGN key cylinder)
→ OFF (Key is removed from IGN key
cylinder)Battery voltage → 0
38 W/L Ignition switchIgnition switch is in ON or START posi-
tionBattery voltage
39 L CAN H — —
40 R CAN L — —
41 R/B Battery saver output signal30 minutes after ignition switch is turned
to OFF0
Ignition switch is in ON position Battery voltage
42 L/R Battery power supply (fuse) — Battery voltage
44 YDriver door lock actuator
(Unlock)Door lock / unlock switch
(Free → Unlock)0 → Battery voltage
45 G/W Left turn signal lampWhen door lock or unlock is operated
using key fob.*
1
(ON → OFF)Battery voltage → 0
46 BR/W Right turn signal lampWhen door lock or unlock is operated
using key fob.*
1
(ON → OFF)Battery voltage → 0
47 Y/R Step lamp output signalStep lamp is lighting. 0
Step lamp is being turned off. Battery voltage
48 PU/W Room lamp output signalRoom lamp is lighting.*
20
Room lamp is being turned off.*
2Battery voltage
49, 52 B Ground — 0
50 PU Door lock actuator (Lock)Door lock / unlock switch
(Free → Lock)0 → Battery voltage
51 W/BPassenger and rear doors lock
actuator (Unlock)Door lock / unlock switch
(Free → Unlock)0 → Battery voltage
54 WBattery power supply
(power window)—Battery voltage
55 GBattery power supply (Fusible
link)—Battery voltage
58 L Back door switch OFF (Door close) → ON (Door open) 9 → 0
62 W Front door switch (Driver side) OFF (Door close) → ON (Door open) Battery voltage → 0
63 P Rear door switch LH OFF (Door close) → ON (Door open) Battery voltage → 0

REMOTE KEYLESS ENTRY SYSTEM
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Terminals and Reference Value for IPDM E/RAIS004MG
* : In the state that horn reminder operates.
CONSULT-II FunctionAIS004MH
The following functions are performed by combining data received and command transmitted via the commu-
nication line from the BCM.
*:Refer to BCS-14, "CAN Communication Inspection Using CONSULT-II (Self-Diagnosis)" .
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. 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)”.
TERMINAL WIRE
COLORITEM CONDITIONVOLTAGE (V)
Approx.
38 B Ground — 0
48 L CAN H — —
49 R CAN L — —
51 SB Horn relayWhen door lock is operated using key
fob* (OFF → ON)Battery voltage → 0
60 B Ground — 0
BCM diagnosis
positionInspection items and diagnosis mode Description
BCM C/U*Self-diagnosis results Carries out the self-diagnosis.
DATA MONI-
TORCAN diagnosis support
monitorDisplays CAN communication system diagnosis, disabled
transmission status, and communication status of each unit
communicated with BCM.
Selection from menu Displays the input data to BCM on real-time basis.
MULTI REMOTE
ENTDATA MONITORDisplays the input remote keyless entry system data to BCM
on real–time basis.
ACTIVE TEST Gives a drive to a load to check the operation.
WORK SUPPORT Changes the setting for each function.
PBIB1503E
MBIB0233E

REMOTE KEYLESS ENTRY SYSTEM
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Trouble Diagnosis Chart by SymptomAIS004MJ
NOTE:

Always check the “Work Flow” before troubleshooting. Refer to BL-68, "Work Flow" .

Always check key fob battery before replacing key fob.
Symptom Diagnoses/service procedureReference
page
All function of remote keyless entry system do not
operate.1. Check key fob battery and function.BL-71
2. Replace key fob. Refer to ID Code Entry Procedure.
NOTE:
If the result of key fob function check with CONSULT-II is OK, key
fob is not malfunctioning.BL-80
3. Replace BCM.BCS-15
The new ID of key fob cannot be entered.1. Check key fob battery and function.BL-71
2. Check key switch.BL-77
3. Check door switch.BL-73
4. Check ACC switch.BL-72
5. Replace key fob. Refer to ID Code Entry Procedure.
NOTE:
If the result of key fob function check with CONSULT-II is OK, key
fob is not malfunctioning.BL-80
6. Replace BCM.BCS-15
Door lock or unlock does not function with key fob.
(Power door lock system is “OK”.)1. Check key fob battery and function.BL-71
2. Replace key fob. Refer to ID Code Entry Procedure.
NOTE:
If the result of key fob function check with CONSULT-II is OK, key
fob is not malfunctioning.BL-80
3. Replace BCM.BCS-15
Hazard and horn reminder does not activate prop-
erly when pressing lock or unlock button of key fob.1. Check hazard and horn reminder mode.*
*: Hazard and horn reminder mode can be changed.
First check the hazard and horn reminder setting.BL-67
2. Check door switch.BL-73
3. Replace BCM.BCS-15
Hazard reminder does not activate properly when
pressing lock or unlock button of key fob.
(Horn reminder is “OK”.)1. Check hazard reminder mode.*
*: Hazard reminder mode can be changed.
First check the hazard reminder setting.BL-67
2. Check hazard function with hazard switch.BL-79
3. Replace BCM.BCS-15
Horn reminder does not activate properly when
pressing lock button of key fob.
(Hazard reminder is “OK”.)1. Check horn reminder mode.*
*: Horn reminder can be changed.
First check the horn chirp setting.BL-67
2. Check horn function.BL-79
3. Check IPDM E/R operation.BL-78
4. Replace BCM.BCS-15

BL-70
REMOTE KEYLESS ENTRY SYSTEM
Revision: 2004 November 2004 FX35/FX45
Panic alarm (horn and headlamp) does not activate
when panic alarm button is continuously pressed.1. Check panic alarm mode.*
*: Panic alarm mode can be changed.
First check the panic alarm setting.BL-67
2. Check key fob battery and function.BL-71
3. Check headlamp function.BL-79
4. Check horn function.BL-79
5. Check IPDM E/R operation.BL-78
6. Check key switch.BL-77
7. Replace key fob. Refer to ID Code Entry Procedure.
NOTE:
If the result of key fob function check with CONSULT-II is OK, key
fob is not malfunctioning.BL-80
8. Replace BCM.BCS-15
Auto door lock operation does not activate properly.
(All other remote keyless entry system function is
OK.)1. Check auto door lock operation mode.*
*: Auto door lock operation mode can be changed.
First check the auto door lock operation setting.BL-67
2. Replace BCM.BCS-15
Keyless power window down (open) operation does
not activate properly.
(All other remote keyless entry system function is
OK.)1. Check power window down operation mode.*
*: Power window down operation mode can be changed.
First check the power window down setting.BL-67
2. Check power window function.GW-15
3. Replace BCM.BCS-15
Map lamp and ignition keyhole illumination opera-
tion does not activate properly.1. Check map lamp and ignition keyhole illumination operation.BL-792. Check door switch.BL-73
3. Replace BCM.BCS-15
Symptom Diagnoses/service procedureReference
page

REMOTE KEYLESS ENTRY SYSTEM
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Check Key Fob Battery and FunctionAIS004MK
1. CHECK KEY FOB BATTERY
1. Remove key fob battery. Refer to BL-83, "
Key Fob Battery Replacement" .
2. Measure voltage between battery positive and negative termi-
nals, (+) and (−).
NOTE:
Key fob does not function if battery is not set correctly.
OK or NG
OK >> GO TO 2.
NG >> Replace battery.
2. CHECK KEY FOB FUNCTION
With CONSULT-II
Check key fob function in “DATA MONITOR” mode with CONSULT-
II. When pushing each button of key fob, the corresponding monitor
item should be turned as follows.
OK or NG
OK >> Key fob is OK.
NG >> Replace key fob.Voltage : 2.5 – 3.0V
SEL237W
Condition Monitor item
Pushing LOCK KEYLESS LOCK : ON
Pushing UNLOCK KEYLESS UNLOCK : ON
Keep pushing UNLOCKRKE KEEP UNLK : ON
*: UN BUTTON ON turns to ON three sec-
onds after UNLOCK button keeps pushing.
Pushing PANIC KEYLESS PANIC : ON
Pushing LOCK and UNLOCK at the
same timeRKE LCK-UNLOCK : ON
PIIA6468E

REMOTE KEYLESS ENTRY SYSTEM
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NOTE:

If a key fob is lost, the ID code of the lost key fob 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 key fob 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 key fobs must be re-registered.
To erase all ID codes in memory, register one ID code (key fob) five times. After all ID codes are erased,
the ID codes of all remaining and/or new key fobs must be re-registered.

When registering an additional key fob, 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 ID codes are stored in memory, when an additional ID code is registered, the new ID code is
added and no ID codes are erased.

If you need to activate more than two additional new key fobs, repeat the procedure “Additional ID code
entry” for each new key fob.

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

Even if same ID code that is already in the memory is input, the same ID code can be entered. The code
is counted as an additional code.
Key Fob Battery ReplacementAIS004MU
PIIA4706E

INTELLIGENT KEY SYSTEM
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6. Select diagnosis mode. “WORK SUPPORT”, “SELF-DIAG
RESULTS”, “DATA MONITOR”, “ACTIVE TEST” and “ECU
PART NUMBER” are available.
CONSULT-II Application ItemsAIS004N7
WORK SUPPORT
SELF-DIAGNOSTIC RESULTS
In the Intelligent Key unit, the CONSULT-II self-diagnostic results can be used to check for malfunctions in
CAN communications.
DATA MONITOR
MAIN SIGNALS Display Item
MIIB0359E
Monitor item Description
CONFIRM KEY FOB ID The Intelligent Key ID can be confirmed.
TAKE OUT FROM WINDOW WARN The condition of Intelligent Key warning function can be changed.
LOW BATT OF KEY FOB WARN The condition of low battery warning function can be changed.
I-KEY FUNCTION The condition of Intelligent Key's function can be changed.
ANSWER BACK FUNCTION The condition of answer back function can be changed.
HORN WITH KEYLESS LOCK The condition of key reminder function can be set.
SELECTIVE UNLOCK FUNCTION The condition of selective unlock function can be changed.
HAZARD ANSWER BACK The condition of key reminder function can be set.
ANSWER BACK WITH I-KEY LOCK The condition of key reminder function (LOCK) can be changed.
ANSWER BACK WITH I-KEY UNLOCK The condition of key reminder function (UNLOCK) can be changed.
AUTO RELOCK TIMERThis mode is able confirm and changed auto door lock function operation time
setting.
PANIC ALARM DELAYThis mode is able to confirm and change panic alarm function operation delay
time setting.
P/W DOWN DELAY This mode is able to confirm and change remote window open function.
ENGINE START BY I-KEY This mode is able to confirm and change start function ON - OFF setting.
LOCK/UNLOCK BY I-KEY The condition of lock/unlock function can be set.
LUG ROOM ENGINE START This mode is able to confirm and change operation range.
Monitor item [OPERATION] Description
PUSH SWITCH [ON/OFF]Displays status (Ignition knob switch ON/ignition knob switch OFF) as judged from
ignition knob switch signal.
KEY SW [ON/OFF] Displays status (Key inserted: ON/Key removed: OFF) as judged by key switch.
DR REQ SW [ON/OFF]Displays status (Operable: ON/Non-operable: OFF) as judged from door request
switch (driver side) signal.
AS REQ SW [ON/OFF]Displays status (Operable: ON/Non-operable: OFF) as judged from door request
switch (passenger side) signal.
BD/TR REQ SW [ON/OFF]Displays status (Operable: ON/Non-operable: OFF) as judged from door request
switch (back door) signal.
IGN SW [ON/OFF]Displays status (Ignition knob ON position: ON/Ignition knob OFF position: OFF)
as judged from ignition switch signal.

VEHICLE SECURITY (THEFT WARNING) SYSTEM
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Canceling the Set Vehicle Security System
When one of the following operations is performed, the armed phase is canceled.
1. Unlock the doors with the key, key fob or Intelligent Key.
2. Turn ignition switch “ON” or “ACC” position.
Canceling the Alarm Operation of the Vehicle Security System
When unlock the door with the key, key fob or Intelligent Key the alarm operation is canceled.
Activating the Alarm Operation of the Vehicle Security System
Make sure the system is in the armed phase. (The security indicator lamp brinks every 2.4 seconds.)
When the following operation 1 or 2 is performed, the system sounds the horns and flashes the headlamps for
about 50 seconds.
1. Hood, back door or any door is opened during armed phase.
2. Disconnecting and connecting the battery connector before canceling armed phase.
POWER SUPPLY
Power is supplied at all times

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

to security indicator lamp terminal 1.

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

to BCM terminal 55.

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

to BCM terminal 42.

through 15A fuse [No.34, located in the fuse and fusible link box]

to horn relay terminal 2.

through 10A fuse [No.71, located in the IPDM E/R]

to IPDM E/R internal CPU.

through 15A fuse [No.78, located in the IPDM E/R]

to IPDM E/R internal CPU.
With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 6, located in the fuse block (J/B)]

to BCM terminal 11.
INITIAL CONDITION TO ACTIVATE THE SYSTEM
The operation of the vehicle security system is controlled by the doors, hood and back door.
To activate the vehicle security system, BCM must receive signals indicating the doors, hood and back door
are closed and the doors are locked by key fob, Intelligent Key or ignition key.
When a door is open, BCM terminal 12 (passenger side door), 13 (rear RH door), 62 (driver side door), 63
(rear LH door) receives a ground signal from each door switch.
When front door LH is unlocked by power window main switch (door lock and unlock switch),
BCM terminal 22 receives a signal from terminal 14 of power window main switch with power window serial
link.
When front door RH is unlocked by front power window switch (passenger side) (door lock and unlock switch),
BCM terminal 22 receives a signal from terminal 16 of front power window switch (passenger side) with power
window serial link.
When the hood is open, IPDM E/R receives a ground signal

to IPDM E/R terminal 56

through hood switch terminal 2

through hood switch terminal 1

through body grounds E21, E50 and E51.
The IPDM E/R then sends a signal to the BCM through the CAN SYSTEM.
When the back door is open,

to BCM terminal 58

through back door closure motor terminal 7