Window INFINITI FX35 2004 Service Manual

CAN COMMUNICATION
LAN-15
[CAN]
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LAN
Revision: 2004 November 2004 FX35/FX45
Key fob door unlock signal T R
Oil pressure switch signalRT
TR
Buzzer output signal T R
Fuel level sensor signal R T
Fuel level low warning signal R T
ASCD SET lamp signal T R
ASCD CRUISE lamp signal T R
Malfunction indicator lamp signal T R
Front wiper request signal T R
Front wiper stop position signal R T
Rear window defogger switch signal T R
Rear window defogger control signal R R R T
Hood switch signal R T
Theft warning horn request signal T R
Horn chirp signal T R
Steering angle sensor signal T R
ABS warning lamp signalRT
VDC OFF indicator lamp signal R T
SLIP indicator lamp signalRT
Brake warning lamp signalRT
System setting signalTR R
RT T
AWD warning lamp signal T R
Distance to empty signal R T
Parking brake switch signal R R T
ASCD operation signal T R
ASCD OD cancel request signal T R
A/T CHECK indicator lamp signal T R
A/T position indicator lamp signal T R
A/T shift schedule change demand signal R T
Manual mode signal R T
Not manual mode signal R T
Manual mode shift up signal R T
Manual mode shift down signal R T
Manual mode indicator signal T R
Snow mode switch signal R T
Current gear position signal* R TSignals ECM TCMDis-
play
unitAW D
con-
trol
unitBCMSte er-
ing
angle
sensorUni-
fied
meter
and
A/C
amp.ABS
actua-
tor
and
elec-
tric
unit
(con-
trol
unit)Driver
seat
con-
trol
unitIPDM
E/R

LAN-18
[CAN]
CAN COMMUNICATION
Revision: 2004 November 2004 FX35/FX45
Day time running
light request signalTR
Turn LED burnout
status signalRT
Vehicle speed signalRR R T
RR R R R R T R R
Sleep wake up signalTR R
TR
Door switch signal R R T R R R
Key fob ID signal T R
Key fob door unlock
signalTR
Oil pressure switch
signalRT
TR
Buzzer output signalTR
TR
TR
Fuel level sensor sig-
nalRT
Fuel level low warn-
ing signalRT
ASCD SET lamp sig-
nalTR
ASCD CRUISE lamp
signalTR
Malfunction indicator
lamp signalTR
ICC operation signal R T
Front wiper request
signalRT R
Front wiper stop
position signalRT
Rear window defog-
ger switch signalTR
Rear window defog-
ger control signalRR R T
Hood switch signal R T
Theft warning horn
request signalTR
Horn chirp signal T R
Steering angle sen-
sor signalTR
Tire pressure signal T RSignals ECM TCMDis-
play
con-
trol
unitLow
tire
pres-
sure
warn-
ing
con-
trol
unitAWD
con-
trol
unitICC
unitIntel-
ligent
Key
unitBCMStee r-
ing
angle
sen-
sorUni-
fied
meter
and
A/C
amp.ICC
sen-
sorABS
actu-
ator
and
elec-
tric
unit
(con-
trol
unit)Driver
seat
con-
trol
unitIPDM
E/R

CAN COMMUNICATION
LAN-19
[CAN]
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Revision: 2004 November 2004 FX35/FX45
Tire pressure data
signalRT
ABS warning lamp
signalRRT
VDC OFF indicator
lamp signalRRT
SLIP indicator lamp
signalRT
Brake warning lamp
signalRT
System setting signalTR R
RT T
AWD warning lamp
signalTR
Distance to empty
signalRT
Parking brake switch
signalRRT
Door lock/unlock
request signalTR
Door lock/unlock sta-
tus signalRT
Starter permission
signalTR
Back door open
request signalTR
Power window open
request signalTR
Alarm request signal T R
Key warning signal T R
ICC sensor signal R T
ICC warning lamp
signalTR
ICC system display
signalTR
Current gear posi-
tion signalTR R
Steering switch sig-
nalTR
ASCD operation sig-
nalTR
ASCD OD cancel
request signalTR
ICC OD cancel
request signalRR T Signals ECM TCMDis-
play
con-
trol
unitLow
tire
pres-
sure
warn-
ing
con-
trol
unitAW D
con-
trol
unitICC
unitIntel-
ligent
Key
unitBCMSteer-
ing
angle
sen-
sorUni-
fied
meter
and
A/C
amp.ICC
sen-
sorABS
actu-
ator
and
elec-
tric
unit
(con-
trol
unit)Driver
seat
con-
trol
unitIPDM
E/R

LT-158
INTERIOR ROOM LAMP
Revision: 2004 November 2004 FX35/FX45
When inserted the key plate to key switch, power is supplied (with intelligent key system)

through the key switch and ignition knob switch terminal 4

to BCM (body control module) terminal 37.
When moved the ignition knob switch, power is supplied (with intelligent key system)

through the ignition knob switch terminal 2

to intelligent key unit terminal 27.
With the ignition switch in the ON or START position, power is supplied

through 15A fuse [No. 1, located in fuse block (J/B)]

to BCM (body control module) terminal 38.
Ground is supplied

to BCM (body control module) terminals 49 and 52

through grounds terminals M35, M45 and M85.
When the driver side door is opened, ground is supplied

through case ground of door switch driver side

to BCM (body control module) terminal 62.
When the passenger side door is opened, ground is supplied

through case ground of door switch passenger side

to BCM (body control module) terminal 12.
When the rear door LH is opened, ground is supplied

through case ground of door switch rear door LH

to BCM (body control module) terminal 63, and

to personal lamp LH terminal 1.
When the rear door RH is opened, ground is supplied

through case ground of door switch rear door RH

to BCM (body control module) terminal 13, and

to personal lamp RH terminal 1.
When the driver side door is unlocked by the door lock and unlock switch, BCM (body control module)
receives a ground signal

through grounds terminals M35, M45 and M85

to power window main switch terminal 17 (door lock and unlock switch) or front power window (passenger
side) terminal 11 (door lock and unlock switch)

from power window main switch terminal 14 (door lock and unlock switch) or front power window (passen-
ger side) terminal 16 (door lock and unlock switch)

to BCM (body control module) terminal 22.
When the front driver side door is unlocked by the driver side door lock assembly (door key cylinder switch),
BCM (body control module) receives a ground signal

through grounds M35, M45 and M85

to front door lock assembly (driver side) (door key cylinder switch) terminal 5

from front door lock assembly (driver side) (door key cylinder switch) terminal 6

to power window main switch terminal 6 (door lock and unlock switch)

from power window main switch terminal 14 (door lock and unlock switch)

to BCM (body control module) terminal 22.
When a signal, or combination of signals is received by BCM (body control module), ground is supplied

through BCM (body control module) terminal 48

to interior room lamp terminal 1(without DVD player),

to map lamp terminal 2 and

to front door inside handle illumination (driver side and passenger side) terminal 2
With power and supplied, the interior lamp illuminates.

INTERIOR ROOM LAMP
LT-159
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Revision: 2004 November 2004 FX35/FX45
SWITCH OPERATION
When driver door switch is ON (door is opened), ground is supplied

through BCM terminal 1

to ignition keyhole illumination terminal 2.
And power is supplied

from BCM terminal 41

to ignition keyhole illumination terminal 1.
When any door switch is ON (door is opened), ground is supplied

through BCM terminal 47

to front step lamp driver side and passenger side, rear step lamp (LH and RH)

through rear door switch terminal 1

to personal lamp (LH and RH) terminal 1.
And power is supplied

from BCM terminal 41

to every step lamp terminal 1, and personal lamp (LH and RH) terminal 2.
When map lamp switch is ON, ground is supplied

through grounds M35, M45 and M85

to map lamp terminal 1.
And power is supplied

from BCM terminal 41

to map lamp terminal 3.
When vanity mirror lamp (driver side and passenger side) is ON, ground is supplied

through grounds M35, M45 and M85

to vanity mirror lamp (driver side and passenger side) terminal 2.
And power is supplied

from BCM terminal 41

to vanity mirror lamp (driver side and passenger side) terminal 1.
When luggage room lamp (back door side) is ON, ground is supplied

through grounds B15 and B45

to luggage room lamp (back door side) terminal 3.
And power is supplied

from BCM terminal 41

to luggage room lamp (body side and back door side) terminal 2.
ROOM LAMP TIMER OPERATION
Without Intelligent Key System
When interior room lamp and map lamp switch is in DOOR position, and when all conditions below are met,
BCM performs timer control (maximum 30 seconds) for interior room lamp and map lamp ON/OFF.
In addition, when spot turns ON or OFF there is gradual brightening or dimming over 1 second.
Power is supplied

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

through key switch terminal 2.
Key is removed from ignition key cylinder (key switch OFF), power will not be supplied to BCM terminal 37.
Ground is supplied

from BCM terminal 22

to power window main switch (door lock and unlock switch) terminal 14.
At the time that driver door are opened, BCM detects that driver door is unlocked. It determines that interior
room lamp and map lamp timer operation conditions are met, and turns the interior room lamp and map lamp
ON for 30 seconds.
Key is in ignition key cylinder (key switch ON),
Power is supplied

LT-160
INTERIOR ROOM LAMP
Revision: 2004 November 2004 FX35/FX45

through key switch terminal 1

to BCM terminal 37.
When key is removed from key switch (key switch OFF), power supply to BCM terminal 37 is terminated. BCM
detects that key has been removed, determines that interior room lamp and map lamp timer conditions are
met, and turns the interior room lamp and map lamp ON for 30 seconds.
When driver door opens → closes, and the key is not inserted in the key switch (key switch OFF), BCM termi-
nal 62 changes between 0V (door open) → 12V (door closed). The BCM determines that conditions for inte-
rior room lamp and map lamp operation are met and turns the interior room lamp ON for 30 seconds.
Timer control is canceled under the following conditions.

Driver door is locked [when locked keyfob or power window main switch (door lock and unlock switch),
door key cylinder switch].

Driver door is opened (driver door switch turns ON).

Ignition switch ON.
With Intelligent Key System
When interior room lamp and map lamp switch is in DOOR position, and when all conditions below are met,
BCM performs timer control (maximum 30 second) for interior room lamp and map lamp ON/OFF.
In addition, when spot turns ON or OFF there is gradual brightening or dimming over 1 second.
Power is supplied

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

through key switch and ignition knob switch terminal 3.
Key is removed from ignition key cylinder (key switch OFF), power will not be supplied to BCM terminal 37.
And not turned ignition knob switch, power will not be supplied to Intelligent Key unit.
Ground is supplied

from BCM terminal 22

to power window main switch (door lock and unlock switch) terminal 14.
At the time that driver door are opened, BCM detects that driver door is unlocked. It determines that interior
room lamp and map lamp timer operation conditions are met, and turns the interior room lamp and map lamp
ON for 30 seconds.
Key is in ignition key cylinder (key switch ON), or turned ignition knob switch,
Power is supplied

through key switch and ignition knob switch terminal 4

to BCM terminal 37

through key switch and ignition knob switch terminal 2

to Intelligent Key unit terminal 27.
When key is removed from key switch (key switch OFF), power supply to BCM terminal 37 is terminated. And
turned ignition knob switch, power supply to intelligent key unit is terminated. BCM detects that key has been
removed, determines that interior room lamp and map lamp timer conditions are met, and turns the interior
room lamp and map lamp ON for 30 seconds.
When driver door opens → closes, and the key is not inserted in the key switch (or not turned ignition knob
switch), BCM terminal 62 changes between 0V (door open) → 12V (door closed). The determines that condi-
tions for interior room lamp and map lamp operation are met and turns the interior room lamp ON for 30 sec-
onds.
Timer control is canceled under the following conditions.

Driver door is locked [when locked keyfob or power window main switch (door lock and unlock switch).
door key cylinder switch].

Driver door is opened (driver door switch terns ON).

Ignition switch ON.
INTERIOR LAMP BATTERY SAVER CONTROL
If interior lamp is left “ON”, it will not be turned out even when door is closed.
BCM turns off interior lamp automatically to save battery 30 minutes after ignition switch is turned off.
BCM controls interior lamps listed below:

Luggage room lamp

Vanity mirror lamp

Map lamp

INTERIOR ROOM LAMP
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Revision: 2004 November 2004 FX35/FX45

Interior room lamp

Personal lamp
After lamps turn OFF by the battery saver system, the lamps illuminate again when

signal from keyfob, or power window main switch (door lock and unlock switch) or key cylinder is locked or
unlocked,

door is opened or closed,

key is removed from ignition key cylinder or inserted in ignition key cylinder, or turned ignition knob switch.
Interior lamp battery saver control period can be changed by the function setting of CONSULT-II.

LT-172
INTERIOR ROOM LAMP
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Values for BCMAKS007FB
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
1PUIgnition keyhole illumina-
tion signalOFFDoor is locked. (SW OFF) Battery voltage
Door is unlocked. (SW ON) Approx. 0V
12 P/B Front door switch AS signal OFFFront door switch
ASON (open) Approx. 0V
OFF (closed) Battery voltage
13 P/L Rear door switch RH signal OFFRear door switch
RHON (open) Approx. 0V
OFF (closed) Battery voltage
22 O/RPower window switch serial
link——
37 B/WKey-in detection switch sig-
nalOFFVehicle key is removed. Approx. 0V
Vehicle key is inserted. Battery voltage
38 W/L Ignition power supply ON — Battery voltage
39 L CAN−H—— —
40 R CAN−L—— —
41 R/B Battery saver output signalOFF30 minutes after ignition switch is
turned to OFFApprox. 0V
ON — Battery voltage
42 L/R Battery power supply OFF — Battery voltage
47 Y/R Step lamp signal OFFAny door is open (ON) Approx. 0V
All doors are closed (OFF) Battery voltage
48 PU/WInterior room lamp, map
lamp and front door inside
handle illumination output
signalOFFInterior door
switch:
DOOR positionAny
door
switchON
(open)Approx. 0V
OFF
(closed)Battery voltage
49
52B Ground ON — Approx. 0V
55 G Battery power supply OFF — Battery voltage
58 LBack door switch signal
(Auto close motor)OFF Back door switchON (open) Approx. 0V
OFF (closed) Battery voltage
62 W Front door switch DR signal OFFFront door switch
DRON (open) Approx. 0V
OFF (closed) Battery voltage
63 P Rear door switch LH signal OFFRear door switch
LHON (open) Approx. 0V
OFF (closed) Battery voltage
PIIA2344J

LT-186
ILLUMINATION
Revision: 2004 November 2004 FX35/FX45

to VDC off switch (illumination) terminal 3

to clock (illumination) terminal 3

to hazard switch (illumination) terminal 3

to heated seat switch (driver side) (illumination) terminal 5

to heated seat switch (passenger side) (illumination) terminal 5

to A/C and AV switch (illumination) terminal 3

to NAVI control unit (illumination) terminal 25

to DVD player (illumination) terminal 12

to front cigarette lighter socket terminal 2

to rear power window switch LH (illumination) terminal 6 and

to rear power window switch RH (illumination) terminal 6.
Illumination control

through combination meter terminal 19

to A/T device (illumination) terminal 12

to snow mode switch (illumination) terminal 2

to VDC off switch (illumination) terminal 4

to clock (illumination) terminal 4

to hazard switch (illumination) terminal 4

to heated seat switch (driver side) (illumination) terminal 6

to heated seat switch (passenger side) (illumination) terminal 6

to A/C and AV switch (illumination) terminal 4

to NAVI control unit (illumination) terminal 30

to DVD player (illumination) terminal 10.
Ground is supplied at all times

to glove box lamp terminal 2 and

to front cigarette lighter socket terminal 3

through grounds M35, M45 and M85

to rear power window switch LH (illumination) terminal 7 and

to rear power window switch RH (illumination) terminal 7

through grounds B15 and B45.
With power and ground supplied, illumination lamps illuminate.
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 1ST or 2ND position (or if auto light system is acti-
vated), and the ignition switch is turned from ON or ACC to OFF, the battery saver control function is activated.
Under this condition, the illumination lamps remain illuminated for 5 minutes, then the illumination lamps are
turned off.
When the lighting switch is turned from OFF to 1ST or 2ND position (or if auto light system is activated) after
illumination lamps are turned off by the battery saver control, and illumination lamps illuminate again.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionAKS007EJ
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitAKS0080Y
Refer to LAN-6, "CAN Communication Unit" .

PG-18
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2004 November 2004 FX35/FX45
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PFP:284B7
System DescriptionAKS005S9

IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates the relay box and fuse block
which were originally placed in engine room. It controls integrated relay via IPDM E/R control circuit.

IPDM E/R-integrated control circuit performs ON-OFF operation of relay, CAN communication control, oil
pressure switch signal, hood switch signal reception, etc.

It controls operation of each electrical part via ECM, BCM and CAN communication lines.
CAUTION:
None of the IPDM E/R-integrated relays can be removed.
SYSTEMS CONTROLLED BY IPDM E/R
1. Lamp control
Using CAN communication line, it receives signal from BCM and controls the following lamps:

Headlamps (Hi, Lo)

Parking lamps

Tail lamps

Front fog lamps
2. Wiper control
Using CAN communication line, it receives signals from BCM and controls the front wipers.
3. Rear window defogger relay control
Using CAN communication line, it receives signals from BCM and controls the rear window defogger
relay.
4. A/C compressor control
Using CAN communication line, it receives signals from ECM and controls the A/C relay.
5. Cooling fan control
Using CAN communication line, it receives signals from ECM and controls cooling fan relay.
6. Horn control
Using CAN communication line, it receives signals from BCM and controls horn relay.
CAN COMMUNICATION LINE CONTROL
With CAN communication, by connecting each control unit using two communication lines (CAN L line, CAN H
line), it is possible to transmit maximum amount of information with minimum wiring. Each control unit can
transmit and receive data, and reads necessary information only.
1. Fail-safe control

When CAN communication with other control units is impossible, IPDM E/R performs fail-safe control.
After CAN communication recovers normally, it also returns to normal control.

Operation of control parts by IPDM E/R during fail-safe mode is as follows:
Controlled system Fail-safe mode
Headlamp

With the ignition switch ON, the headlamp (low) is ON.

With the ignition switch OFF, the headlamp (low) is OFF.
Tail and parking lamps

With the ignition switch ON, the tail and parking lamps is ON.

With the ignition switch OFF, the tail and parking lamps is OFF.
Cooling fan

With the ignition switch ON, the cooling fan HI operates.

With the ignition switch OFF, the cooling fan stops.
Front wiperUntil the ignition switch is turned off, the front wiper LO and HI remains in the same status it
was in just before fail−safe control was initiated.
Rear window defogger Rear window defogger relay OFF
A/C compressor A/C compressor OFF
Front fog lamps Front fog lamp relay OFF