Lan system INFINITI FX35 2004 Service Manual

LAN-12
[CAN]
CAN COMMUNICATION
Revision: 2004 November 2004 FX35/FX45
VDC OFF indicator lamp
signalRRT
SLIP indicator lamp sig-
nalRT
Brake warning lamp sig-
nalRT
System setting signalTR R
RT T
Distance to empty signal R T
Parking brake switch sig-
nalRT
Door lock/unlock request
signalTR
Door lock/unlock status
signalRT
Starter permission signal T R
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 signal T R
ICC system display sig-
nalTR
Current gear position sig-
nalTR R
Steering switch signal T R
ASCD operation signal T R
ASCD OD cancel
request signalTR
ICC OD cancel request
signalRR T
A/T CHECK indicator
lamp signalTR
A/T position indicator
lamp signalTR
A/T shift schedule
change demand signalRT
Manual mode signal R T
Not manual mode signal R TSignals ECM TCMDis-
play
con-
trol
unitLow
tire
pres-
sure
warn-
ing
con-
trol
unitICC
unitIntelli-
gent
Key
unitBCMSte er-
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-13
[CAN]
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LAN
Revision: 2004 November 2004 FX35/FX45
TYPE 4/TYPE5
System diagram

Ty pe 4

Ty pe 5
Manual mode shift up
signalRT
Manual mode shift down
signalRT
Manual mode indicator
signalTR R
Ignition knob switch sig-
nalTR
Snow mode switch signal R TSignals ECM TCMDis-
play
con-
trol
unitLow
tire
pres-
sure
warn-
ing
con-
trol
unitICC
unitIntelli-
gent
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
SKIA6174E
SKIA6175E

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-16
[CAN]
CAN COMMUNICATION
Revision: 2004 November 2004 FX35/FX45
*: VK45DE engine model only
TYPE 6
System diagram

Ty p e 6
Input/output signal chart
T: Transmit R: Receive Next gear position signal* R T
Shift change signal* R T
Shift pattern signal* R TSignals ECM TCMDis-
play
unitAWD
con-
trol
unitBCMSt e e r-
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
SKIA6176E
Signals 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
A/T self-diagnosis
signalRT
ABS operation signal R T
TCS operation signal R T
VDC operation signal R R T
Stop lamp switch sig-
nalRR T
Battery voltage sig-
nalTR
Key switch signal T R

CAN COMMUNICATION
LAN-19
[CAN]
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LAN
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

CAN SYSTEM (TYPE 1)
LAN-21
[CAN]
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LAN
Revision: 2004 November 2004 FX35/FX45
CAN SYSTEM (TYPE 1)PFP:23710
System DescriptionAKS00BZ7
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.
Component Parts and Harness Connector LocationAKS00BZ8
SKIA7126E

LAN-22
[CAN]
CAN SYSTEM (TYPE 1)
Revision: 2004 November 2004 FX35/FX45
Wiring Diagram - CAN -AKS00BZ9
TKWM1292E

CAN SYSTEM (TYPE 1)
LAN-23
[CAN]
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B
LAN
Revision: 2004 November 2004 FX35/FX45
TKWH0247E

LAN-24
[CAN]
CAN SYSTEM (TYPE 1)
Revision: 2004 November 2004 FX35/FX45
Work FlowAKS00BZA
1. When there are no indications of “BCM”, “METER A/C AMP” or “IPDM E/R” on “SELECT SYSTEM” dis-
play of CONSULT-II, print the “SELECT SYSTEM”.
2. Print all the data of “SELF-DIAG RESULTS” for “ENGINE”, “A/T”, “BCM”, “METER A/C AMP”, “ABS”, and
“IPDM E/R” displayed on CONSULT-II.
3. Print all the data of “CAN DIAG SUPPORT MNTR” for “ENGINE”, “A/T”, “BCM”, “METER A/C AMP”,
“ABS”, and “IPDM E/R” displayed on CONSULT-II.
4. Attach the printed sheet of “SELECT SYSTEM”, “SELF-DIAG RESULTS” and “CAN DIAG SUPPORT
MNTR” onto the check sheet. Refer to LAN-26, "
CHECK SHEET" .
5. Based on the indications of “SELECT SYSTEM” and the results of “CAN DIAG SUPPORT MNTR”, put
marks “v” onto the items with “No indication”, “NG”, or “UNKWN” in the check sheet table. Refer to LAN-
26, "CHECK SHEET" .
NOTE:

If “NG” is displayed on “INITIAL DIAG (Initial diagnosis)” as “CAN DIAG SUPPORT MNTR” for the diag-
nosed control unit, replace the control unit.

The “CAN DIAG SUPPORT MNTR” items, which are not in check sheet table, are not related to diag-
nostic procedure on service manual.
So it is not necessary to check the status of “CAN DIAG SUPPORT MNTR” items which are not indi-
cated in check sheet table.
6. Check CAN communication line of the integrated display system. Refer to AV- 8 5 , "
CAN Communication
Line Inspection" .
7. Attach the CAN DIAG MONITOR check sheet onto the check sheet. Refer to LAN-26, "
CHECK SHEET" .
8. Mark the “NG” or “UNKWN” item of the check sheet table with “v” from the result of CAN DIAG MONITOR
check sheet. Refer to LAN-26, "
CHECK SHEET" .
PKIA2093E
PKIA8260E
PKIA8343E

CAN SYSTEM (TYPE 1)
LAN-25
[CAN]
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LAN
Revision: 2004 November 2004 FX35/FX45
NOTE:
If “NG” is displayed on “CAN COMM” as “CAN DIAG MNTR” for the diagnosed control unit, replace the
control unit. Refer to AV- 8 5 , "
CAN Communication Line Inspection" .
9. According to the check sheet results (example), start inspection. Refer to LAN-28, "
CHECK SHEET
RESULTS (EXAMPLE)" .