2008 INFINITI FX35 key fob battery

BCM (BODY CONTROL MODULE)BCS-7
< SERVICE INFORMATION >
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- Door lock/unlock switch
- Front door switch (driver side, passenger side)
- Rear door switch (LH, RH)
- Back door opener switch
- Combination switch (passing, lighting switch 1ST position, front fog lamp)
- Key fob (lock/unlock signal)
- Key cylinder switch
 When control performed only by BCM is required by switch, it shifts to CAN communication inactive mode.
 Operation mode of combination switch reading function is changed.
SYSTEMS CONTROLLED BY BCM DIRECTLY
NOTE:
Power supply only. No system control.
SYSTEMS CONTROLLED BY BCM AND IPDM E/R
SYSTEMS CONTROLLED BY BCM AND COMBINATION METER
SYSTEMS CONTROLLED BY BCM AND INTELLIGENT KEY UNIT
SYSTEMS CONTROLLED BY BCM, CO MBINATION METER AND IPDM E/R
System Reference
Power door lock system BL-21
Remote keyless entry systemBL-50
Power window system NOTEGW-15
Sunroof NOTERF-10
Room lamp timerLT- 1 3 8
Rear wiper and washer systemWW-30
System Reference
Panic alarm 
BL-50
BL-76
Theft warning system BL-163
IVIS (NATS)BL-185
HeadlampLT- 5
Daytime light systemLT- 3 2
Auto light systemLT- 4 7
Front fog lampLT- 6 6
 Parking, license plate, side marker and tail lamps
 Exterior lamp battery saver control LT- 11 8
Front wiper and washer system
WW-4
Rear window defoggerGW-60
System Reference
Warning chime DI-51
Turn signal and hazard warning lampsLT- 7 8
Tire pressure monitoring systemWT-10
System Reference
Intelligent Key system BL-76
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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BCS-8
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
MAJOR COMPONENTS AND CONTROL SYSTEM
System Reference
Oil pressure warning lamp DI-34
System Input Output
Remote control entry system Key fob  All-door locking actuator
 Fuel lid Lock actuator
 Turn signal lamp (LH, RH)
 Combination meter
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 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)
 Power window sub switch (passenger side) (door lock and unlock switch)  IPDM E/R
 Security indicator lamp
Auto light system  Optical sensor
 Combination switch
 Ignition switchIPDM E/R
Exterior lamp battery saver control  Ignition switch
 Combination switchIPDM E/R
Headlamp Combination switch IPDM E/R
Daytime light system  Combination meter
ECM
 Combination switch
 Ignition switchIPDM E/R
Parking, license plate, side marker and tail
lamps Combination switch IPDM E/R
Front fog lamp Combination switch IPDM E/R
Turn signal lamp  Combination switch
 Ignition 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 sideCombination meter
(warning buzzer)
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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BL-1
BODY
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CONTENTS
BODY, LOCK & SECURITY SYSTEM
SERVICE INFORMATION .. ..........................4
DTC INDEX ..................................................... .....4
INTELLGENT KEY UNIT U1000 ...............................4
INTELLGENT KEY UNIT B2013-B2014 ............. ......4
ECM P1610-P1615 ...................................................4
PRECAUTIONS ...................................................5
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
5
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .....................................
5
Precaution for Work ..................................................5
PREPARATION ...................................................6
Special Service Tool ........................................... ......6
Commercial Service Tool ..........................................6
SQUEAK AND RATTLE TROUBLE DIAGNO-
SIS .......................................................................
7
Work Flow ........................................................... ......7
Generic Squeak and Rattle Troubleshooting ............9
Diagnostic Worksheet .............................................11
HOOD .................................................................13
Fitting Adjustment ............................................... ....13
Removal and Installation of Hood Assembly ...........14
Removal and Installation of Hood Lock Control ......15
Hood Lock Control Inspection ............................. ....16
RADIATOR CORE SUPPORT ...........................18
Removal and Installation ..................................... ....18
FRONT FENDER ................................................20
Removal and Installation ..................................... ....20
POWER DOOR LOCK SYSTEM ........................21
Component Parts and Harness Connector Loca-
tion ...................................................................... ....
21
System Description .................................................22
CAN Communication System Description ...............23
CAN Communication Unit .................................... ....23
Schematic/With Intelligent Key ................................24
Wiring Diagram - D/LOCK -/With Intelligent Key .....25
Schematic/Without Intellig ent Key ...........................30
Wiring Diagram - D/LOCK -/Without Intelligent
Key ...................................................................... ....
31
Terminal and Reference Value for BCM ..................35
Terminal and Reference Value for Intelligent Key
Unit (With Intelligent Key System) ...........................
35
Work Flow ................................................................36
CONSULT-III Function (BCM) .................................36
Trouble Diagnosis Chart by Symptom .....................37
Check BCM Power Supply and Ground Circuit .......37
Check Door Switch ..................................................38
Check Key Switch ....................................................42
Check Door Lock and Unlock Switch ......................43
Check Door Lock Actuator (Driver Side) .................45
Check Door Lock Actuator (Passenger Side and
Rear LH/RH) ............................................................
45
Check Fuel Lid Lock Actuator ..................................46
Check Front Door Key Cylinder Switch (Lock) ........47
Check Front Door Key Cylinder Switch (Unlock) .....47
Check Select Unlock Relay Circuit ..........................48
REMOTE KEYLESS ENTRY SYSTEM .............50
Component Parts and Harness Connector Loca-
tion ...........................................................................
50
System Description ..................................................50
CAN Communication System Description ...............53
CAN Communication Unit ........................................53
Schematic ................................................................54
Wiring Diagram - KEYLES - ....................................55
Terminal and Reference Value for BCM ..................58
Terminal and Reference Value for IPDM E/R ..........59
CONSULT-III Function (BCM) .................................60
Work Flow ................................................................62
Trouble Diagnosis Chart by Symptom .....................62
Check Key Fob Battery and Function ......................63
Check ACC Switch ..................................................64
Check Door Switch ..................................................65
Check Key Switch ....................................................68
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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BL-2
Check Remote Keyless Entry Receiver ..................69
Check IPDM E/R Operation ....................................71
Check Hazard Warning Lamp Function ..................72
Check Horn Function ..............................................72
Check Headlamp Function .....................................72
Check Map Lamp and Ignition Keyhole Illumina-
tion Function ...........................................................
72
ID Code Entry Procedure .......................................73
Removal and Installation of Remote keyless Entry
receiver ................................................................ ...
75
Key Fob Battery Replacement ................................75
INTELLIGENT KEY SYSTEM ............................76
Component Parts and Harness Connector Loca-
tion ....................................................................... ...
76
System Description .................................................78
CAN Communication System Description ..............83
CAN Communication Unit .......................................84
Schematic ...............................................................84
Wiring Diagram - I/KEY - ........................ ................86
Terminal and Reference Value for INTELLIGENT
KEY UNIT ........... ................................. ...................
99
Terminal and Reference Value for Steering Lock
unit ....................................................................... ..
101
Terminal and Reference Value for BCM ................101
Terminal and Reference Value for IPDM E/R ........102
Diagnosis Procedure .............................................103
CONSULT-III Functions (INTELLIGENT KEY) ......103
CONSULT-III Application Item ............................. ..104
List of Operation Related Parts .............................105
Trouble Diagnosis Symptom Chart ........................106
Check CAN Communication System Inspection ....111
Check Intelligent Key Unit Power Supply and
Ground Circuit ..................................................... ..
111
Check Key Switch (Intelligent Key Unit Input) .......112
Check Key Switch (BCM Input) ........................... ..113
Check Ignition Knob Switch ...................................114
Check Door Switch ................................................115
Check Unlock Sensor ............................................117
Check Door Request Switch ..................................119
Check Intelligent Key Warning Buzzer ..................120
Check Outside Key Antenna ............................... ..121
Check Inside Key Antenna ....................................123
Check Steering Lock Unit ......................................124
Check Stop Lamp Switch ......................................126
Check Park Position Switch ...................................126
Check Select Unlock Relay ...................................128
Check Hazard Function .........................................128
Check Horn Function .............................................129
Check Headlamp Function ....................................129
Check IPDM E/R Operation ...................................129
Removal and Installation of Intelligent Key Unit ....130
Intelligent Key Battery Re placement .....................130
DOOR .............................................................. .131
Fitting Adjustment ................................................ ..131
Removal and Installation of Front Door .................132
Removal and Installation of Rear Door ..................133
Removal and Installation of Door Weatherstrip .....134
FRONT DOOR LOCK .......................................135
Removal and Installation ...................................... .135
REAR DOOR LOCK .........................................138
Removal and Installation ...................................... .138
BACK DOOR .................................................. ..141
Fitting Adjustment ................................................ .141
Back Door Assembly .............................................141
Removal and Installation of Back Door Striker .....142
Removal and Installation of Back Door Stay .........143
Removal and Installation of Dave Tail Male & Fe-
male ..................................................................... .
144
Removal and Installation of Back Door Weather-
strip .......................................................................
144
BACK DOOR LOCK ASSEMBLY ....................146
Removal and Installation of Back Door Lock &
Closure Assembly ................................................ .
146
Removal and Installation of Back Door Opener
Switch ...................................................................
146
Disassembly and Assembly ..................................147
BACK DOOR AUTO CLOSURE SYSTEM ......148
Component Parts and Harness Connector Loca-
tion ....................................................................... .
148
System Description ...............................................148
Wiring Diagram - B/CLOS - ...................................150
Terminal and Reference Value for Back Door Clo-
sure Control Unit ...................................................
152
Work Flow .............................................................153
Preliminary Check .................................................153
Trouble Diagnosis Chart by Symptom ..................153
Check Back Door Closure Control Unit Power
Supply and Ground Circuit ....................................
153
Check Half-Latch Switch .......................................154
Check Close Switch ..............................................155
Check Open Switch ..............................................156
Check Back Door Opener Switch (With Intelligent
Key) ...................................................................... .
157
Check Back Door Opener Switch (Without Intelli-
gent Key) ...............................................................
159
Check Unlock Sensor (Without Intelligent Key) ....160
Check Closure Motor ........................................... .161
Removal and Installation of Back Door Closer
Control Unit ...........................................................
162
VEHICLE SECURITY (THEFT WARNING)
SYSTEM ...........................................................
163
Component Parts and Harness Connector Loca-
tion ....................................................................... .
163
System Description ...............................................164
CAN Communication System Description ............166
CAN Communication Unit .....................................166
Schematic .............................................................167
Wiring Diagram - VEHSEC - .................................168
Terminal and Reference Value for BCM ...............173
Terminal and Reference Value for IPDM E/R .......174
CONSULT-III Function ..........................................174
Trouble Diagnosis .................................................176
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REMOTE KEYLESS ENTRY SYSTEMBL-59
< SERVICE INFORMATION >
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*1: In the state that hazard reminder operates.
*
2: In the state that room lamp switch is in “DOOR” position.
Terminal and Reference Value for IPDM E/RINFOID:0000000001327819
*: In the state that horn reminder operates. 44 Y
Driver door lock actuator
(Unlock) Output
Door lock / unlock switch
(Free
→ Unlock) 0
→ Battery voltage
45 G/W Left turn signal lamp Output When door lock or unlock is operat-
ed using key fob.*
1
(ON
→ OFF) Battery voltage
→ 0
46 BR/W Right turn signal lamp Output When door lock or unlock is operat-
ed using key fob.*
1
(ON
→ OFF) Battery voltage
→ 0
47 Y/R Step lamp output signal Output Step lamp is lighting. 0
Step lamp is being turned off. Battery voltage
48 PU/W Room lamp output signal Output Room lamp is lighting.*
20
Room lamp is being turned off.*
2Battery voltage
49 B Ground — — 0
50 PU Door lock actuator (Lock) Output Door lock / unlock switch
(Free
→ Lock) 0
→ Battery voltage
51 W/B Passenger and rear doors
lock actuator (Unlock) OutputDoor lock / unlock switch
(Free
→ Unlock) 0
→ Battery voltage
52 B Ground — — 0
54 W Battery power supply
(power window)
Input — Battery voltage
55 G Battery power supply (Fus-
ible link)
Input — Battery voltage
58 L Back door switch Input OFF (Door close)
→ ON (Door
open) 9
→ 0
62 W Front door switch (Driver
side) InputOFF (Door close)
→ ON (Door
open) Battery voltage
→ 0
63 P Rear door switch LH Input OFF (Door close)
→ ON (Door
open) Battery voltage
→ 0
Te r m i -
nal Wire
Color ItemSignal In-
put/ out-
put Condition
Voltage (V)
Approx.
Te r m i -nal Wire
Color ItemSignal
Input/
Output Condition
Voltage (V)
Approx.
38 B Ground — — 0
48 L CAN H Input/
Output ——
49 R CAN L Input/
Output ——
51 SB Horn relay Output When door lock is operated using
key fob* (OFF
→ ON) Battery voltage
→ 0
60 B Ground — — 0
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BL-62
< SERVICE INFORMATION >
REMOTE KEYLESS ENTRY SYSTEM
PW Down Set
Work FlowINFOID:0000000001327821
1. Check the symptom and customer's requests.
2. Understand outline of system. Refer to BL-50, "
System Description".
3. Confirm that power door lock system operates normally. Refer to BL-21
.
4. Repair or replace any malfunctioning parts. Refer to BL-62, "
Trouble Diagnosis Chart by Symptom".
5. INSPECTION END
Trouble Diagnosis Chart by SymptomINFOID:0000000001327822
NOTE:
 Always check the “Work Flow” before troubleshooting. Refer to BL-62, "
Work Flow".
 Always check key fob battery before replacing key fob.
MODE 1 MODE 2 MODE 3
Key fob operation 3 seconds Nothing 5 seconds
Symptom Diagnoses/service procedure Reference
page
All function of remote keyless entry system do not
operate. 1. Check key fob battery and function.
BL-63
2. Replace key fob. Refer to ID Code Entry Procedure.
NOTE:
If the result of key fob function check with CONSULT-III is OK, key
fob is not malfunctioning.BL-73
3. Check remote keyless entry receiver.
BL-69
4. Replace BCM.BCS-13
The new ID of key fob cannot be entered.1. Check key fob battery and function.
BL-63
2. Check key switch.BL-68
3. Check door switch.BL-65
4. Check ACC switch.BL-64
5. Replace key fob. Refer to ID Code Entry Procedure.
NOTE:
If the result of key fob function check with CONSULT-III is OK, key
fob is not malfunctioning.BL-73
6. Replace BCM.
BCS-13
Door lock or unlock does not function with key fob.
(Power door lock system is “OK”.)1. Check key fob battery and function.
BL-63
2. Replace key fob. Refer to ID Code Entry Procedure.
NOTE:
If the result of key fob function check with CONSULT-III is OK, key
fob is not malfunctioning.BL-73
3. Replace BCM.
BCS-13
Hazard and horn reminder does not activate properly
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-60
2. Check door switch.
BL-65
3. Replace BCM.BCS-13
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REMOTE KEYLESS ENTRY SYSTEMBL-63
< SERVICE INFORMATION >
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Check Key Fob Battery and FunctionINFOID:0000000001327823
1.CHECK KEY FOB BATTERY
1. Remove key fob battery. Refer to BL-75, "
Key Fob Battery Replacement".
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-60
2. Check hazard function with hazard switch.
BL-72
3. Replace BCM.BCS-13
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-60
2. Check horn function.
BL-72
3. Check IPDM E/R operation.BL-71
4. Replace BCM.BCS-13
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-60
2. Check key fob battery and function.
BL-63
3. Check headlamp function.BL-72
4. Check horn function.BL-72
5. Check IPDM E/R operation.BL-71
6. Check key switch.BL-68
7. Replace key fob. Refer to ID Code Entry Procedure.
NOTE:
If the result of key fob function check with CONSULT-III is OK, key
fob is not malfunctioning.BL-73
8. Replace BCM.
BCS-13
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-60
2. Replace BCM.
BCS-13
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-60
2. Check power window function.
GW-15
3. Replace BCM.BCS-13
Map lamp and ignition keyhole illumination operation
does not activate properly.1. Check map lamp and ignition keyhole illumination operation.
BL-722. Check door switch.BL-65
3. Replace BCM.BCS-13
Symptom Diagnoses/service procedure Reference
page
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BL-64
< SERVICE INFORMATION >
REMOTE KEYLESS ENTRY SYSTEM
2. Measure voltage between battery positive and negative termi-nals, (+) and ( −).
NOTE:
Key fob does not function if bat tery is not set correctly.
OK or NG
OK >> GO TO 2.
NG >> Replace battery.
2.CHECK KEY FOB FUNCTION
With CONSULT-III
Check key fob function in “DATA MONITOR” mode with CONSULT-III. 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.
Check ACC SwitchINFOID:0000000001327824
1.CHECK ACC SWITCH
With CONSULT-III
Check ACC switch (“ACC ON SW”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III 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
Monitor item Condition
ACC SW Ignition switch position is ACC or ON : ON
Ignition switch position is OFF : OFF
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