2006 INFINITI FX35 Ac system

BCS-1
BODY CONTROL SYSTEM
K ELECTRICAL
CONTENTS
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SECTION BCS
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B
BCS
Revision: 2006 December 2006 FX35/FX45
BODY CONTROL SYSTEM
PRECAUTIONS ..................................................... ..... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 2
BCM (BODY CONTROL MODULE) ...................... ..... 3
System Description ............................................. ..... 3
BCM FUNCTION .............................................. ..... 3
COMBINATION SWITCH READING FUNCTION ..... 3
CAN COMMUNICATION CONTROL ............... ..... 6
BCM STATUS CONTROL ................................ ..... 7
SYSTEMS CONTROLLED BY BCM DIRECTLY ..... 8
SYSTEMS CONTROLLED BY BCM AND IPDM
E/R ................................................................... ..... 8
SYSTEMS CONTROLLED BY BCM AND COM-
BINATION METER ........................................... ..... 8 SYSTEMS CONTROLLED BY BCM AND INTEL-
LIGENT KEY UNIT ........................................... ..... 8
MAJOR COMPONENTS AND CONTROL SYS-
TEM .................................................................. ..... 9
CAN Communication Unit .................................... ... 10
Schematic ............................................................ ... 11
CONSULT-II Function (BCM) .............................. ... 13
CONSULT–II INSPECTION PROCEDURE ...... ... 13
ITEMS OF EACH PART ................................... ... 13
WORK SUPPORT ............................................ ... 14
CAN Communication Inspection Using CONSULT-
II (Self-Diagnosis) ................................................ ... 14
Removal and Installation of BCM ........................ ... 15
REMOVAL ........................................................ ... 15
INSTALLATION ................................................ ... 15

BCS-2
PRECAUTIONS
Revision: 2006 December 2006 FX35/FX45
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NKS0033Y
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.

BCM (BODY CONTROL MODULE) BCS-3
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BCS
Revision: 2006 December 2006 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.
PKIC9702E

BCS-4
BCM (BODY CONTROL MODULE)
Revision: 2006 December 2006 FX35/FX45
Operation Table Of BCM and Combination Switches
BCM reads operation status of combination switch using combinations shown in table below.
NOTE:
Headlamp system has a dual switch.
SKIA4959E

BCS-6
BCM (BODY CONTROL MODULE)
Revision: 2006 December 2006 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-32, "
CAN Communication Unit" .
PKIC4919E

BCS-8
BCM (BODY CONTROL MODULE)
Revision: 2006 December 2006 FX35/FX45
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
System Reference
Power door lock BL-21, "
POWER DOOR LOCK SYSTEM"
Remote keyless entryBL-54, "REMOTE KEYLESS ENTRY SYSTEM"
Power window NOTEGW-15, "POWER WINDOW SYSTEM"
Sunroof NOTERF-10, "SUNROOF"
Room lamp timerLT-156, "INTERIOR ROOM LAMP"
Warning chimeDI-56, "WARNING CHIME"
Rear wiperWW-39, "REAR WIPER AND WASHER SYSTEM"
Low tire pressure warning systemWT-10, "LOW TIRE PRESSURE WARNING SYSTEM"
System Reference
Panic alarm BL-54, "
REMOTE KEYLESS ENTRY SYSTEM"
Theft warningBL-180, "VEHICLE SECURITY (THEFT WARNING) SYSTEM"
IVIS (NATS)BL-205, "IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)"
HeadlampLT- 7 , "HEADLAMP - XENON TYPE -"
Daytime light LT- 3 9 , "DAYTIME LIGHT SYSTEM"
Auto light systemLT- 5 6 , "AUTO LIGHT SYSTEM"

Parking, license plate, side marker and tail lamps

Battery saver control LT-133, "PARKING, LICENSE PLATE AND TAIL LAMPS"
Front fog lamp
LT- 7 8 , "FRONT FOG LAMP"
Front wiperWW-4, "FRONT WIPER AND WASHER SYSTEM"
Rear window defoggerGW-67, "REAR WINDOW DEFOGGER"
System Reference
Warning chime DI-56, "
WARNING CHIME"
Turn signal and hazard warning lampsLT- 9 0 , "TURN SIGNAL AND HAZARD WARNING LAMPS"
Daytime light systemLT- 3 9 , "DAYTIME LIGHT SYSTEM"
System Reference
Intelligent Key BL-86, "
INTELLIGENT KEY SYSTEM"

BCM (BODY CONTROL MODULE) BCS-9
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Revision: 2006 December 2006 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)
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 light system

Combination meter

ECM Combination meter
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)

BCS-10
BCM (BODY CONTROL MODULE)
Revision: 2006 December 2006 FX35/FX45
CAN Communication UnitNKS00340
Refer to LAN-32, "CAN Communication Unit" .
Vehicle-speed-sensing intermittent wiper
Combination switch

Combination meter IPDM E/R
Rear intermittent wiper Combination switch Rear wiper motor
Rear window defogger

Rear window defogger switch

Ignition switch IPDM E/R
A/C switch signal Unified meter and A/C amp. ECM
Blower fan switch signal Unified meter and A/C amp. ECM
Low tire pressure warning system Remote keyless entry receiver Combination meter System Input Output