ACC INFINITI FX35 2007 Service Manual

BCM (BODY CONTROL MODULE) BCS-3
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Revision: 2006 July 2007 FX35/FX45
BCM (BODY CONTROL MODULE)PFP:284B2
System DescriptionNKS0033Z
BCM (Body Control Module) controls the operation of various electrical units installed on the vehicle.
BCM FUNCTION
BCM has combination switch reading function for reading the operation of combination switches (light, wiper,
washer and turn signal) in addition to a function for controlling the operation of various electrical components.
Also it has an interface function allowing it to receive signals from the unified meter and A/C amp., and send
signals to ECM using CAN communication.
COMBINATION SWITCH READING FUNCTION
Description

BCM reads combination switch (lighting switch, wiper switch) status, and controls various electrical com-
ponent according to the result.

BCM reads information of a maximum of 20 switches by combining five output terminals (OUTPUT 1-5)
and five input terminals (INPUT 1-5).
Operation Description

BCM activates transistors of output terminals (OUTPUT 1-5) periodically, and allows current to flow in
turn.

If any (1 or more) switches are turned ON, circuit of output terminals (OUTPUT 1-5) and input terminals
(INPUT 1-5) becomes active.

At this time, transistors of output terminals (OUTPUT 1-5) are activated to allow current to flow. When volt-
age of input terminals (INPUT 1-5) corresponding to that switch changes, interface in BCM detects volt-
age change, and BCM determines that switch is ON.
PKID0853E

BCM (BODY CONTROL MODULE) BCS-5
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Revision: 2006 July 2007 FX35/FX45
Operation Mode
Combination switch reading function has operation modes shown below.
1. Normal status When BCM is not in sleep status, OUTPUT terminals (1-5) send out ON signal every 10 ms.
2. Sleep status When BCM is in sleep status, transistors of OUTPUT 1 and 5 stop the output, and BCM enters low power
mode. Mean while OUTPUT 2, 3, and 4 send out ON signal every 60 ms, and accept input from lighting
switch system.
CAN COMMUNICATION CONTROL
CAN communication allows a high rate of information transmission through the two communication lines (CAN
L line, CAN H line) connecting the various control units in the system. Each control unit transmits/receives
data but selectively reads required data only. For details of signals that are transmitted/received by BCM via
CAN communication, refer to LAN-49, "
CAN System Specification Chart" .
PKIC4919E

BL-2Revision: 2006 July 2007 FX35/FX45
Check Front Door Key Cylinder Switch (Lock) ....
... 51
Check Front Door Key Cylinder Switch (Unlock) . ... 52
Check Select Unlock Relay Circuit ...................... ... 53
REMOTE KEYLESS ENTRY SYSTEM .................. ... 54
Component Parts and Harness Connector Location ... 54
System Description .............................................. ... 55
INPUTS ............................................................ ... 55
OPERATED PROCEDURE .............................. ... 56
CAN Communication System Description ........... ... 57
CAN Communication Unit .................................... ... 57
Schematic ............................................................ ... 58
Wiring Diagram — KEYLES — ............................ ... 59
Terminals and Reference Value for BCM ............. ... 62
Terminals and Reference Value for IPDM E/R ..... ... 63
CONSULT-II Function (BCM) ............................... ... 64
CONSULT-II INSPECTION PROCEDURE ....... ... 64
CONSULT-II APPLICATION ITEMS ................. ... 64
Work Flow ............................................................ ... 66
Trouble Diagnosis Chart by Symptom ................. ... 67
Check Key Fob Battery and Function .................. ... 69
Check ACC Switch .............................................. ... 70
Check Door Switch .............................................. ... 71
CHECK DOOR SWITCH (EXCEPT BACK DOOR
SWITCH) .......................................................... ... 71
CHECK BACK DOOR SWITCH ....................... ... 73
Check Key Switch ................................................ ... 75
Check Remote Keyless Entry Receiver ............... ... 76
Check IPDM E/R Operation ................................. ... 79
Check Hazard Warning Lamp Function ............... ... 80
Check Horn Function ........................................... ... 80
Check Headlamp Function .................................. ... 80
Check Map Lamp and Ignition Keyhole Illumination
Function ............................................................... ... 80
ID Code Entry Procedure .................................... ... 81
KEY FOB ID SET UP WITH CONSULT-II ........ ... 81
KEY FOB ID SET UP WITHOUT CONSULT-II . ... 83
Removal and Installation of Remote keyless Entry
receiver ................................................................ ... 84
REMOVAL ........................................................ ... 84
INSTALLATION ................................................. ... 84
Key Fob Battery Replacement ............................. ... 85
INTELLIGENT KEY SYSTEM ................................ ... 86
Component Parts and Harness Connector Location ... 86
System Description .............................................. ... 88
DOOR LOCK FUNCTION ................................ ... 88
REMOTE CONTROL ENTRY FUNCTIONS ..... ... 89
ENGINE STARTUP FUNCTION ....................... ... 90
WARNING AND ALARM FUNCTION ............... ... 91
CHANGE SETTINGS FUNCTION .................... ... 94
INTELLIGENT KEY REGISTRATION ............... ... 94
STEERING LOCK UNIT REGISTRATION ....... ... 94
CAN Communication System Description ........... ... 95
CAN Communication Unit .................................... ... 95
Schematic ............................................................ ... 96
Wiring Diagram — I/KEY — ................................ ... 98
Terminals and Reference Value for INTELLIGENT
KEY UNIT ............................................................ ..111
Terminals and Reference Value for Steering Lock
unit ....................................................................... .113 Terminals and Reference Value for BCM .............
.113
Terminals and Reference Value for IPDM E/R ..... .114
Diagnosis Procedure ............................................ .115
WORK FLOW ................................................... .115
CONSULT-II Functions (INTELLIGENT KEY) ...... .116
CONSULT-II Start Procedure ............................... .116
CONSULT-II Application Items ............................. .116
WORK SUPPORT ............................................ .116
SELF-DIAGNOSTIC RESULTS ........................ .116
DATA MONITOR ............................................... .117
ACTIVE TEST ................................................... .117
List of Operation Related Parts ............................ .118
Trouble Diagnosis Symptom Chart ...................... .119
ALL FUNCTIONS OF THE INTELLIGENT KEY
ARE NOT OPERATING .................................... .119
REMOTE CONTROL ENTRY FUNCTION MAL-
FUNCTION ....................................................... .119
DOOR LOCK FUNCTION MALFUNCTION ...... .120
ENGINE START FUNCTION MALFUNCTION . .121
WARNING CHIME FUNCTION MALFUNCTION .121
Check CAN Communication System Inspection .. .124
Check Intelligent Key Unit Power Supply and
Ground Circuit ...................................................... .124
Check Key Switch (Intelligent Key Unit Input) ...... .125
Check Key Switch (BCM Input) ............................ .126
Check Ignition Knob Switch ................................. .127
Check Door Switch .............................................. .129
CHECK DOOR SWITCH (EXCEPT BACK DOOR
SWITCH) ........................................................... .129
CHECK BACK DOOR SWITCH ........................ .130
Check Unlock Sensor .......................................... .131
Check Door Request Switch ................................ .133
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 Park Position 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 Battery Replacement .................... .147
INTELLIGENT KEY BATTERY INSPECTION .. .147
DOOR ..................................................................... .148
Fitting Adjustment ................................................ .148
FRONT DOOR .................................................. .148
REAR DOOR .................................................... .148
STRIKER ADJUSTMENT ................................. .149
Removal and Installation of Front Door ............... .149
REMOVAL ......................................................... .149
INSTALLATION ................................................. .150
Removal and Installation of Rear Door ................ .150
REMOVAL ......................................................... .150

PRECAUTIONS BL-5
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PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NIS001LF
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectNIS001LG
NOTE:

This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).

Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″ LOCK ″ position.

Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.
Precautions for WorkNIS001LH

After removing and installing the opening/closing parts, be sure to carry out fitting adjustments to check
their operation.

Check the lubrication level, damage, and wear of each part. If necessary, grease or replace it.

SQUEAK AND RATTLE TROUBLE DIAGNOSIS BL-7
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SQUEAK AND RATTLE TROUBLE DIAGNOSISPFP:00000
Work FlowNIS001LK
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the conditions that exist when the noise occurs. Use the Diag-
nostic Worksheet during the interview to document the facts and conditions when the noise occurs and any
customer's comments; refer to BL-11, "
Diagnostic Worksheet" . This information is necessary to duplicate the
conditions that exist when the noise occurs.

The customer may not be able to provide a detailed description or the location of the noise. Attempt to
obtain all the facts and conditions that exist when the noise occurs (or does not occur).

If there is more than one noise in the vehicle, be sure to diagnose and repair the noise that the customer
is concerned about. This can be accomplished by test driving the vehicle with the customer.

After identifying the type of noise, isolate the noise in terms of its characteristics. The noise characteristics
are provided so the customer, service adviser and technician are all speaking the same language when
defining the noise.

Squeak —(Like tennis shoes on a clean floor)
Squeak characteristics include the light contact/fast movement/brought on by road conditions/hard sur-
faces=higher pitch noise/softer surfaces=lower pitch noises/edge to surface=chirping

Creak—(Like walking on an old wooden floor)
Creak characteristics include firm contact/slow movement/twisting with a rotational movement/pitch
dependent on materials/often brought on by activity.

Rattle—(Like shaking a baby rattle)
Rattle characteristics include the fast repeated contact/vibration or similar movement/loose parts/missing
clip or fastener/incorrect clearance.

Knock —(Like a knock on a door)
Knock characteristics include hollow sounding/sometimes repeating/often brought on by driver action.

Tick—(Like a clock second hand)
Tick characteristics include gentle contacting of light materials/loose components/can be caused by driver
action or road conditions.

Thump—(Heavy, muffled knock noise)
Thump characteristics include softer knock/dead sound often brought on by activity.

Buzz—(Like a bumble bee)
Buzz characteristics include high frequency rattle/firm contact.

Often the degree of acceptable noise level will vary depending upon the person. A noise that you may
judge as acceptable may be very irritating to the customer.

Weather conditions, especially humidity and temperature, may have a great effect on noise level.
SBT842

HOOD BL-13
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HOODPFP:F5100
Fitting AdjustmentNIS001LN
LONGITUDINAL AND LATERAL CLEARANCE ADJUSTMENT
1. Remove hood lock assembly, loosen the hood hinge nuts and close the hood.
2. Adjust the lateral and longitudinal clearance, and open the hood to tighten the hood hinge mounting bolts to the specified torque.
3. Install the hood lock temporarily, and align the hood striker and lock so that the centers of striker and lock become vertical viewed from the front, by moving the hood lock laterally.
4. Tighten hood lock mounting bolts to the specified torque.
CAUTION:
Adjust right/left clearance between hood and headlamp to the following specification.
FRONT END HEIGHT ADJUSTMENT
1. Remove the hood lock and adjust the height by rotating the bumper rubber until the hood becomes 1 to1.5
mm (0.04 to 0.059 in) lower than the fender.
2. Temporarily tighten the hood lock, and position it by engaging it with the hood striker. Check the lock and striker for looseness, and tighten the hood lock mounting bolts to the specified torque.
SURFACE HEIGHT ADJUSTMENT
1. Remove hood lock, and adjust the surface height difference of hood, fender and headlamp according to the fitting standard dimension, by rotating RH and LH bumper rubbers.
2. Install hood lock temporarily, and move hood lock laterally until the centers of striker and lock become ver- tical when viewed from the front.
1. Hood hinge 2. Nut 3. Hood stay
4. Hood lock 5. Bolt 6. Bumper rubber
PIIB1212E
Hood and headlamp (C–C) : Less than 2.0 mm (0.08 in)

POWER DOOR LOCK SYSTEM BL-37
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Work FlowNIS001M4
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to BL-22, "
System Description" .
3. According to the trouble diagnosis chart by symptom, repair or replace the cause of the malfunction. Refer to BL-38, "
Trouble Diagnosis Chart by Symptom" .
4. Does power door lock system operate normally? YES: GO TO 5.
NO: GO TO 3.
5. INSPECTION END
CONSULT-II Function (BCM)NIS001M5
CONSULT-II can display each diagnostic item using the diagnostic test modes shown.
CONSULT-II START PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure" .
CONSULT-II APPLICATION ITEMS
Work Support
Data Monitor
*: With Intelligent Key system BCM diagnosis
test item Check item diagnosis test mode Content
Door lock DATA MONITOR Displays the input data of BCM real time.
ACTIVE TEST Gives a drive signal to a load to check the operation.
Work item Description
DOOR LOCK-UNLOCK SET Select unlock mode can be changed in this mode. Selects ON-OFF of select unlock mode.
ANTI-LOCK OUT SET Key reminder door mode can be changed in this mode. Selects ON-OFF of key reminder door
mode.
Monitor item Content
IGN ON SW Indicates [ON/OFF] condition of ignition switch in ON position.
KEY ON SW Indicates [ON/OFF] condition of key switch.
CDL LOCK SW Indicates [ON/OFF] condition of lock signal from door lock and unlock switch.
CDL UNLOCK SW Indicates [ON/OFF] condition of unlock signal from door lock and unlock switch.
DOOR SW-DR Indicates [ON/OFF] condition of front door switch driver side.
DOOR SW-AS Indicates [ON/OFF] condition of front door switch passenger side.
DOOR SW-RR Indicates [ON/OFF] condition of rear door switch RH.
DOOR SW-RL Indicates [ON/OFF] condition of rear door switch LH.
BACK DOOR SW Indicates [ON/OFF] condition of back door switch.
KEY CYL LK-SW Indicates [ON/OFF] condition of lock signal from key cylinder.
KEY CYL UN-SW Indicates [ON/OFF] condition of unlock signal from key cylinder.
KEYLESS LOCK Indicates [ON/OFF] condition of lock signal from key fob.
KEYLESS UNLOCK Indicates [ON/OFF] condition of unlock signal from key fob.
I-KEY LOCK* Indicates [ON/OFF] condition of lock signal from door request switch.
I-KEY UNLOCK* Indicates [ON/OFF] condition of unlock signal from door request switch.

REMOTE KEYLESS ENTRY SYSTEM BL-55
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Revision: 2006 July 2007 FX35/FX45
System DescriptionNIS001MI
INPUTS
Power is supplied at all times

to BCM terminal 55

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

to BCM terminal 42

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

to Horn relay terminal 2

through 15A fuse (No. 34, located in the fuse and fusible link box).
When the key switch is ON (key is inserted in ignition key cylinder), power is supplied

to BCM terminal 37

through key switch terminal 1 and 2

through 15A fuse [No. 22, 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. 6, located in the fuse block (J/B)].
When the ignition switch is ON or START, power is supplied

to BCM terminal 38

through 15A fuse [No. 1, located in the fuse block (J/B)].
When the front door switch (driver side) is ON (door is OPEN), ground is supplied

to BCM terminal 62

through front door switch (driver side) terminal 1

through front door switch (driver side) case ground.
When the front door switch (passenger side) is ON (door is OPEN), ground is supplied

to BCM terminal 12

through front door switch (passenger side) terminal 1

through front door switch (passenger side) case ground.
When the rear door switch LH is ON (door is OPEN), ground is supplied

to BCM terminal 63

through rear door switch LH terminal 1

through rear door switch LH case ground.
When the rear door switch RH is ON (door is OPEN), ground is supplied

to BCM meter terminal 13

through rear door switch RH terminal 1

through rear door switch RH case ground.
When the back door switch is ON (door is open), ground is supplied

to BCM terminal 58

through back door closure motor (door switch) terminals 7 and 8

through body grounds B15 and B45
Key fob signal is inputted to remote keyless entry receiver (the antenna of the system is built in remote keyless
entry receiver).

to BCM terminal 20

from remote keyless entry system controls operation of the
The remote keyless entry system controls operation of the

power door lock

hazard and horn reminder

auto door lock

panic alarm

keyless power window down (open)

BL-62
REMOTE KEYLESS ENTRY SYSTEM
Revision: 2006 July 2007 FX35/FX45
Terminals and Reference Value for BCMNIS001MN
Te r m i -
nal Wire
Color Item Signal
Input/
output Condition
Voltage (V)
Approx.
1PU Key ring illumination output
signal Output Key ring illumination is lighting. Battery voltage
Key ring illumination is being
turned off. 0
11 LG Ignition switch Input Ignition switch is in ACC or ON
position Battery voltage
12 P/B Front door switch (Passen-
ger side) Input
ON (door open)
→ OFF (door
closed) 0
→ Battery voltage
13 P/L Rear door switch RH Input 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) Output Key is inserted in IGN key cylinder 0
All door closed
20 Y Remote keyless entry
receiver (Signal) Input Key is inserted in IGN key cylinder 0
Waiting
(All door closed)
When signal is received
(All door closed)
37 B/W Key switch Input ON (Key is inserted in IGN key cyl-
inder) → OFF (Key is removed
from IGN key cylinder) Battery voltage
→ 0
38 W/L Ignition switch Input Ignition switch is in ON or START
position Battery voltage
39 L CAN H Input/
Output ——
40 P CAN L Input/
Output ——
41 R/B Battery saver output signal Output 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) Input — Battery voltage
44 Y Driver door lock actuator
(Unlock) Output
Door lock / unlock switch
(Free → Unlock) 0
→ Battery voltage
OCC3881D
OCC3879D
OCC3880D

BL-64
REMOTE KEYLESS ENTRY SYSTEM
Revision: 2006 July 2007 FX35/FX45
CONSULT-II Function (BCM)NIS001MP
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
*: Refer to LAN-49, "CAN System Specification Chart" .
CONSULT-II INSPECTION PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure" .
CONSULT-II APPLICATION ITEMS
Data Monitor
Active Test
BCM diagnosis position Inspection items and diagnosis mode Description
BCM C/U* Self-diagnosis results Carries out the self-diagnosis.
DATA MONITOR Displays the input data to BCM on real-time basis.
CAN DIAG SUPPORT MNTR Displays CAN communication system diagnosis, disabled
transmission status, and communication status of each unit
communicated with BCM.
MULTI REMOTE
ENT DATA MONITOR
Displays 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.
Monitored Item Description
IGN ON SW Indicates [ON/OFF] condition of ignition switch in ON position.
KEY ON SW Indicates [ON/OFF] condition of key switch.
ACC ON SW Indicates [ON/OFF] condition of ignition switch in ACC position.
KEYLESS LOCK Indicates [ON/OFF] condition of lock signal from key fob.
KEYLWSS UNLOCK Indicates [ON/OFF] condition of unlock signal from key fob.
KEYLESS PANIC Indicates [ON/OFF] condition of panic signal from key fob.
KEYLESS TRUNK This is displayed even when it is not equipped.
DOOR SW-DR Indicates [ON/OFF] condition of front door switch driver side.
DOOR SW-AS Indicates [ON/OFF] condition of door switch passenger side.
DOOR SW-RR Indicates [ON/OFF] condition of front door switch RH.
DOOR SW-RL Indicates [ON/OFF] condition of door switch LH.
BACK DOOR SW Indicates [ON/OFF] condition of back door switch.
TRUNK OPN MNTR This is displayed even when it is not equipped.
CDL LOCK SW Indicates [ON/OFF] condition of lock signal from door lock and unlock switch.
CDL UNLOCK SW Indicates [ON/OFF] condition of unlock signal from door lock and unlock switch.
RKE LCK-UNLOCK Indicates [ON/OFF] condition of simultaneous signal of lock and unlock from key fob.
RKE KEEP UNLK Indicates [ON/OFF] condition of unlock continuousness signal from key fob.
KEY CYL LK-SW Indicates [ON/OFF] condition of lock signal from door key cylinder switch.
KEY CYL UN-SW Indicates [ON/OFF] condition of unlock signal from door key cylinder switch.
Test Item Description
FLASHER This test is able to check right hazard reminder operation. The right hazard lamp turns on when “ON” on CONSULT-II screen is touched.
POWER WINDOW DOWN This test is able to check power window open operation.
The front power windows activate for 10 seconds after “ON” on CONSULT-II screen is touched.
HORN This test is able to check panic alarm and horn reminder operations. The horn activate for 0.5 seconds after “ON” on CONSULT-II screen is touched.