key fob battery INFINITI FX35 2005 Service Manual

BCM (BODY CONTROL MODULE) BCS-9
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Revision: 2005 July 2005 FX
MAJOR COMPONENTS AND CONTROL SYSTEM
System Input Output
Remote control entry system key fob

All-door locking actuator

Turn signal lamp (LH, RH)
Intelligent key system Intelligent key unit

All-door locking actuator

Fuel lid Lock actuator

Turn signal lamp (LH, RH)

Combination meter
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 seat Battery power supply
Power window, sunroof system and
power seat
Panic alarm

Key switch

Key fob IPDM 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 switch IPDM E/R
Battery saver control

Ignition switch

Combination switch IPDM E/R
Headlamp Combination switch IPDM E/R
Daytime system

Combination meter

ECM Clearance lamp
Tail lamp Combination switch IPDM E/R
Front 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 switch Interior room lamp
Key warning chime

Key switch

Front door switch driver side Combination meter
(warning buzzer)
Light warning chime

Combination switch

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

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

Ignition switch Combination meter
(warning buzzer)

BL-2Revision: 2005 July 2005 FX
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 (BCM) ............................... ... 66
CONSULT-II INSPECTION PROCEDURE ....... ... 66
CONSULT-II APPLICATION ITEMS ................. ... 67
Work Flow ............................................................ ... 69
Trouble Diagnosis Chart by Symptom ................. ... 70
Check Key Fob Battery and Function .................. ... 72
Check ACC Switch .............................................. ... 73
Check Door Switch .............................................. ... 74
CHECK DOOR SWITCH (EXCEPT BACK DOOR
SWITCH) .......................................................... ... 74
CHECK BACK DOOR SWITCH ....................... ... 76
Check Key Switch ................................................ ... 78
Check Remote Keyless Entry Receiver ............... ... 79
Check IPDM E/R Operation ................................. ... 82
Check Hazard Warning Lamp Function ............... ... 83
Check Horn Function ........................................... ... 83
Check Headlamp Function .................................. ... 83
Check Map Lamp and Ignition Keyhole Illumination
Function ............................................................... ... 83
ID Code Entry Procedure .................................... ... 84
KEY FOB ID SET UP WITH CONSULT-II ........ ... 84
KEY FOB ID SET UP WITHOUT CONSULT-II . ... 86
Removal and Installation of Remote keyless Entry
receiver ................................................................ ... 87
REMOVAL ........................................................ ... 87
INSTALLATION ................................................. ... 87
Key Fob Battery Replacement ............................. ... 88
INTELLIGENT KEY SYSTEM ................................ ... 89
Component Parts and Harness Connector Location ... 89
System Description .............................................. ... 91
DOOR LOCK FUNCTION ................................ ... 91
REMOTE CONTROL ENTRY FUNCTIONS ..... ... 92
ENGINE STARTUP FUNCTION ....................... ... 93 WARNING AND ALARM FUNCTION ...............
... 94
CHANGE SETTINGS FUNCTION .................... ... 97
INTELLIGENT KEY REGISTRATION ............... ... 97
STEERING LOCK UNIT REGISTRATION ........ ... 97
CAN Communication System Description ........... ... 98
CAN Communication Unit .................................... ... 98
Schematic ............................................................ ... 99
Wiring Diagram — I/KEY— .................................. .101
Terminals and Reference Value for INTELLIGENT
KEY UNIT ............................................................ .114
Terminals and Reference Value for Steering Lock
unit ....................................................................... .116
Terminals and Reference Value for BCM ............. .116
Terminals and Reference Value for IPDM E/R ..... .117
Diagnosis Procedure ............................................ .118
WORK FLOW ................................................... .118
CONSULT-II Functions ........................................ .119
CONSULT-II Inspection Procedure ...................... .119
BASIC OPERATION ......................................... .119
CONSULT-II Application Items ............................. .120
WORK SUPPORT ............................................ .120
SELF-DIAGNOSTIC RESULTS ........................ .120
DATA MONITOR ............................................... .120
ACTIVE TEST ................................................... .121
List of Operation Related Parts ............................ .122
Trouble Diagnosis Symptom Chart ...................... .123
ALL FUNCTIONS OF THE INTELLIGENT KEY
ARE NOT OPERATING .................................... .123
REMOTE CONTROL ENTRY FUNCTION MAL-
FUNCTION ....................................................... .123
DOOR LOCK FUNCTION MALFUNCTION ...... .124
ENGINE START FUNCTION MALFUNCTION . .125
WARNING CHIME FUNCTION MALFUNCTION .125
Check CAN Communication System Inspection .. .128
Check Intelligent Key Unit Power Supply and
Ground Circuit ...................................................... .129
Check Key Switch (Intelligent Key Unit Input) ...... .129
Check Key Switch (BCM Input) ............................ .131
Check Ignition Knob Switch ................................. .132
Check Door Switch .............................................. .133
CHECK DOOR SWITCH (EXCEPT BACK DOOR
SWITCH) ........................................................... .133
CHECK BACK DOOR SWITCH ........................ .134
Check Unlock Sensor .......................................... .136
Check Door Request Switch ................................ .137
Check Intelligent Key Warning Buzzer ................. .139
Check Outside Key Antenna ................................ .140
Check Inside Key Antenna ................................... .143
Check Steering Lock Unit ..................................... .144
Check Stop Lamp Switch ..................................... .146
Check Detention Switch ....................................... .147
Check Select Unlock Relay .................................. .149
Check Hazard Function ....................................... .150
Check Horn Function ........................................... .150
Check Headlamp Function ................................... .150
Check IPDM E/R Operation ................................. .150
Removal and Installation of Intelligent Key Unit ... .151
REMOVAL ......................................................... .151

BL-64
REMOTE KEYLESS ENTRY SYSTEM
Revision: 2005 July 2005 FX
Terminals and Reference Value for BCMAIS004MF
TERMI-
NAL WIRE
COLOR ITEM CONDITION VOLTAGE (V)
Approx.
1PU Key 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/B Front 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
18 B Remote keyless entry receiver
(Ground) —0
19 R Remote keyless entry receiver
(Power supply) —
20 Y Remote keyless entry receiver
(Signal) Stand-by
When remote keyless entry receiver
receives signal from keyfob.
37 B/W Key switch ON (Key is inserted in IGN key cylinder)
→ OFF (Key is removed from IGN key
cylinder) Battery voltage
→ 0
38 W/L Ignition switch Ignition switch is in ON or START posi-
tion Battery voltage
39 L CAN H — —
40 R CAN L — —
41 R/B Battery saver output signal 30 minutes after ignition switch is turned
to OFF 0
Ignition switch is in ON position Battery voltage
42 L/R Battery power supply (fuse) — Battery voltage
44 Y Driver door lock actuator
(Unlock) Door lock / unlock switch
(Free → Unlock) 0
→ Battery voltage
45 G/W Left turn signal lamp When door lock or unlock is operated
using key fob.*
1
(ON → OFF) Battery voltage
→ 0
46 BR/W Right turn signal lamp When door lock or unlock is operated
using key fob.*
1
(ON → OFF) Battery voltage
→ 0
47 Y/R Step lamp output signal Step lamp is lighting. 0
Step lamp is being turned off. Battery voltage
OCC3881D
OCC3879D
OCC3880D

REMOTE KEYLESS ENTRY SYSTEM BL-65
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*1 : In the state that hazard reminder operates.
*2 : In the state that room lamp switch is in “DOOR” position.
Terminals and Reference Value for IPDM E/RAIS004MG
* : In the state that horn reminder operates. 48 PU/W Room lamp output signal
Room 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/B Passenger and rear doors lock
actuator (Unlock) Door lock / unlock switch
(Free → Unlock) 0
→ Battery voltage
54 W Battery power supply
(power window) — Battery voltage
55 G Battery 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
TERMI-
NAL WIRE
COLOR ITEM CONDITION VOLTAGE (V)
Approx.
TERMINAL WIRE
COLOR ITEM CONDITION VOLTAGE (V)
Approx.
38 B Ground — 0
48 L CAN H — —
49 R CAN L — —
51 SB Horn relay When door lock is operated using key
fob* (OFF → ON) Battery voltage
→ 0
60 B Ground — 0

BL-70
REMOTE KEYLESS ENTRY SYSTEM
Revision: 2005 July 2005 FX
Trouble Diagnosis Chart by SymptomAIS004MJ
NOTE:

Always check the “Work Flow” before troubleshooting. Refer to BL-69, "Work Flow" .

Always check key fob battery before replacing key fob.
Symptom Diagnoses/service procedure Reference
page
All function of remote keyless entry system do not
operate. 1. Check key fob battery and function.
BL-72
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-84
3. Check remote keyless entry receiver.
BL-79
4. Replace BCM.BCS-16
The new ID of key fob cannot be entered. 1. Check key fob battery and function.
BL-72
2. Check key switch.BL-78
3. Check door switch.BL-74
4. Check ACC switch.BL-73
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-84
6. Replace BCM.
BCS-16
Door lock or unlock does not function with key fob.
(Power door lock system is “OK”.) 1. Check key fob battery and function.
BL-72
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-84
3. Replace BCM.
BCS-16
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-68
2. Check door switch.
BL-74
3. Replace BCM.BCS-16
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-68
2. Check hazard function with hazard switch.
BL-83
3. Replace BCM.BCS-16
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-68
2. Check horn function.
BL-83
3. Check IPDM E/R operation.BL-82
4. Replace BCM.BCS-16

REMOTE KEYLESS ENTRY SYSTEM BL-71
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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-68
2. Check key fob battery and function.
BL-72
3. Check headlamp function.BL-83
4. Check horn function.BL-83
5. Check IPDM E/R operation.BL-82
6. Check key switch.BL-78
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-84
8. Replace BCM.
BCS-16
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-68
2. Replace BCM.
BCS-16
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-68
2. Check power window function.
GW-15
3. Replace BCM.BCS-16
Map lamp and ignition keyhole illumination opera-
tion does not activate properly. 1. Check map lamp and ignition keyhole illumination operation.
BL-832. Check door switch.BL-74
3. Replace BCM.BCS-16
Symptom Diagnoses/service procedure Reference
page

BL-72
REMOTE KEYLESS ENTRY SYSTEM
Revision: 2005 July 2005 FX
Check Key Fob Battery and FunctionAIS004MK
1. CHECK KEY FOB BATTERY
1. Remove key fob battery. Refer to BL-88, "
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 UNLOCK RKE KEEP UNLK : ON
Pushing PANIC KEYLESS PANIC : ON
Pushing LOCK and UNLOCK at the
same time RKE LCK-UNLOCK : ON
PIIA6468E

BL-88
REMOTE KEYLESS ENTRY SYSTEM
Revision: 2005 July 2005 FX
Key Fob Battery ReplacementAIS004MU
PIIA4706E

BL-120
INTELLIGENT KEY SYSTEM
Revision: 2005 July 2005 FX
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 TIMER This mode is able confirm and changed auto door lock function operation time
setting.
PANIC ALARM DELAY This 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 BL-189
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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