steering INFINITI FX35 2005 Service Manual

LAN-4Revision: 2005 July 2005 FX
fied Meter and A/C Amp. Circuit ..........................
.422
Inspection Between Unified Meter and A/C Amp.
and ABS Actuator and Electric Unit (Control Unit)
Circuit .................................................................. .422
ECM Circuit Inspection ........................................ .423
TCM Circuit Inspection ........................................ .423
Display Unit Circuit Inspection ............................. .424
Data Link Connector Circuit Inspection ............... .424
BCM Circuit Inspection ........................................ .425
Steering Angle Sensor Circuit Inspection ............ .425
Unified Meter and A/C Amp. Circuit Inspection ... .426
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection ............................................................ .426
IPDM E/R Circuit Inspection ................................ .427
CAN Communication Circuit Inspection ............... .428
IPDM E/R Ignition Relay Circuit Inspection ......... .433
CAN SYSTEM (TYPE 10) ...................................... .434
Component Parts and Harness Connector Location .434
Schematic ............................................................ .435
Wiring Diagram - CAN - ....................................... .436
Check Sheet ........................................................ .439 CHECK SHEET RESULTS (EXAMPLE) ...........
.441
Inspection Between TCM and Data Link Connector
Circuit ................................................................... .456
Inspection Between Data Link Connector and Uni-
fied Meter and A/C Amp. Circuit .......................... .457
Inspection Between Unified Meter and A/C Amp.
and ABS Actuator and Electric Unit (Control Unit)
Circuit ................................................................... .457
ECM Circuit Inspection ........................................ .458
TCM Circuit Inspection ......................................... .458
Display Unit Circuit Inspection ............................. .459
AWD Control Unit Circuit Inspection .................... .459
Data Link Connector Circuit Inspection ................ .460
BCM Circuit Inspection ........................................ .460
Steering Angle Sensor Circuit Inspection ............. .461
Unified Meter and A/C Amp. Circuit Inspection .... .461
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection ............................................................. .462
IPDM E/R Circuit Inspection ................................ .462
CAN Communication Circuit Inspection ............... .463
IPDM E/R Ignition Relay Circuit Inspection .......... .469

LAN-28
[CAN]
TROUBLE DIAGNOSES WORK FLOW
Revision: 2005 July 2005 FX
DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN
FOR ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)
Display Results (Present)

OK: Normal

NG: Malfunction

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.
DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN
FOR DRIVER SEAT CONTROL UNIT
Display Results (Present)

OK: Normal

NG: Malfunction

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.
SKIB2442E
“SELECT SYSTEM”
screen “CAN DIAG SUPPORT
MNTR” screen Description Present
ABS INITIAL DIAG Make sure that microcomputer in ECU works normally. OK/NG
TRANSMIT DIAG Make sure of normal transmission. OK/UNKWN
ECM Make sure of normal reception from ECM. OK/UNKWN
TCM Make sure of normal reception from TCM. OK/UNKWN
METER/M&A METER/M&A is not diagnosed. UNKWN
STRG Make sure of normal reception from steering angle sensor. OK/UNKWN
ICC ICC is not diagnosed. UNKWN
AWD/4WD Make sure of normal reception from AWD control unit. OK/UNKWN
SKIB2360E
“SELECT SYSTEM” screen “CAN DIAG SUPPORT
MNTR” screen Description Present
AUTO DRIVE POS. INITIAL DIAG Make sure that microcomputer in ECU works normally. OK/NG
TRANSMIT DIAG Make sure of normal transmission. OK/UNKWN
BCM/SEC Make sure of normal reception from BCM. OK/UNKWN
METER/M&A Make sure of normal reception from unified meter and A/C amp. OK/UNKWN
TCM Make sure of normal reception from TCM. OK/UNKWN

CAN COMMUNICATION LAN-33
[CAN]
C
D E
F
G H
I
J
L
M A
B
LAN
Revision: 2005 July 2005 FX
Front wiper request signal T R
Front wiper stop position signal R T
Rear window defogger switch sig-
nal TR
Rear window defogger control
signal RRR 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 signal RT
VDC OFF indicator lamp signal R T
SLIP indicator lamp signal RT
Brake warning lamp signal RT
System setting signal TR R
RT T
A/T CHECK indicator lamp signal T R
A/T position indicator lamp signal T R
A/T shift schedule change
demand signal RT
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
Distance to empty signal R T
Parking brake switch signal R T
Snow mode switch signal R T
Tire pressure signal T R Signals ECM TCM
Dis-
play unit BCM St e e r-
ing
angle
sensor LDW
cam-
era unit Unified
meter and
A/C
amp. ABS
actua-
tor and elec-
tric unit (con-trol
unit) Driver
seat
control unit IPDM
E/R

LAN-36
[CAN]
CAN COMMUNICATION
Revision: 2005 July 2005 FX
Vehicle speed signal RRRT
RRRRR TRR
Sleep wake up signal TR R
TR
Door switch signal R R T R R R
Turn indicator signal T R R
Key fob ID signal T R
Key fob door unlock sig-
nal TR
Oil pressure switch sig-
nal RT
TR
Buzzer output signal TR
TR
TR
Fuel level sensor signal R T
Fuel level low warning
signal RT
Malfunctioning indicator
lamp signal TR
ICC operation signal R T
Front wiper request sig-
nal RT R
Front wiper stop position
signal RT
Rear window defogger
switch signal TR
Rear window defogger
control signal RR R T
Hood switch signal R T
Theft warning horn
request signal TR
Horn chirp signal T R
Steering angle sensor
signal TR
Tire pressure signal T R
ABS warning lamp signal R T
VDC OFF indicator lamp
signal RT
SLIP indicator lamp sig-
nal RT
Brake warning lamp sig-
nal RT
Signals ECM TCM
Dis-
play
con-
trol
unit ICC
unit Intelli-
gent Key unit BCM St e e r-
ing
angle
sen- sor LDW
cam- era
unit Uni-
fied
meter and
A/C
amp. ICC
sen-
sor ABS
actu- ator and
elec- tric
unit
(con- trol
unit) Driver
seat
con-
trol
unit IPDM
E/R

CAN COMMUNICATION LAN-37
[CAN]
C
D E
F
G H
I
J
L
M A
B
LAN
Revision: 2005 July 2005 FX
System setting signal TR R
RT T
Distance to empty signal R T
Parking brake switch sig-
nal RT
Door lock/unlock request
signal TR
Door lock/unlock status
signal RT
Starter permission signal T R
Back door open request
signal TR
Power window open
request signal TR
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-
nal TR
Current gear position sig-
nal TR R
ICC steering switch sig-
nal TR
ASCD operation signal T R
ASCD OD cancel
request signal TR
ICC OD cancel request
signal RT
A/T CHECK indicator
lamp signal TR
A/T position indicator
lamp signal TR
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 RT
Manual mode shift down
signal RT
Manual mode indicator
signal TR R
Signals ECM TCM
Dis-
play
con-
trol
unit ICC
unit Intelli-
gent Key unit BCM Ste er-
ing
angle
sen- sor LDW
cam- era
unit Uni-
fied
meter and
A/C
amp. ICC
sen-
sor ABS
actu- ator and
elec- tric
unit
(con- trol
unit) Driver
seat
con-
trol
unit IPDM
E/R

LAN-40
[CAN]
CAN COMMUNICATION
Revision: 2005 July 2005 FX
A/C switch/indicator signal TR
RT
Cooling fan speed request sig-
nal T
R
Position light request signal R T R R
Low beam request signal T R
Low beam status signal R T
High beam request signal T R R
High beam status signal R T
Front fog light request signal T R
Day time running light request
signal TR
Turn LED burnout status signal R T
Vehicle speed signal RRRT
RRR R T R
Sleep wake up signal T R R
Door switch signal R T R R R
Turn indicator signal T R R
Key fob ID signal T R
Key fob door unlock signal T R
Oil pressure switch signal RT
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 sig-
nal TR
Front wiper request signal T R
Front wiper stop position signal R T
Rear window defogger switch
signal TR
Rear window defogger control
signal RRR T
Hood switch signal R T
Theft warning horn request sig-
nal TR
Horn chirp signal T R
Steering angle sensor signal T R Signals ECM TCM
Dis-
play
unit AW D
con- trol
unit BCM Steer-
ing
angle
sensor LDW
cam- era
unit Uni-
fied
meter and
A/C
amp. ABS
actua- tor
and
elec- tric
unit
(con- trol
unit) Driver
seat
con-
trol
unit IPDM
E/R

LAN-44
[CAN]
CAN COMMUNICATION
Revision: 2005 July 2005 FX
Day time running
light request signal TR
Turn LED burnout
status signal RT
Vehicle speed signal RR R R T
RR R R R T R R
Sleep wake up signal TR R
TR
Door switch signal R R T R R R
Turn indicator signal T R R
Key fob ID signal T R
Key fob door unlock
signal TR
Oil pressure switch
signal RT
TR
Buzzer output signal TR
TR
TR
Fuel level sensor sig-
nal RT
Fuel level low warn-
ing signal RT
Malfunction indicator
lamp signal TR
ICC operation signal R T
Front wiper request
signal RT R
Front wiper stop
position signal RT
Rear window defog-
ger switch signal TR
Rear window defog-
ger control signal RR R T
Hood switch signal R T
Theft warning horn
request signal TR
Horn chirp signal T R
Steering angle sen-
sor signal TR
Tire pressure signal T R
ABS warning lamp
signal RT
Signals ECM TCM
Dis-
play
con-
trol
unit AW D
con- trol
unit ICC
unit Intel-
ligent Key unit BCM Steer-
ing
angle
sen- sor LDW
cam- era
unit Uni-
fied
meter and
A/C
amp. ICC
sen-
sor ABS
actu- ator and
elec- tric
unit
(con- trol
unit) Driver
seat
con-
trol
unit IPDM
E/R

CAN COMMUNICATION LAN-45
[CAN]
C
D E
F
G H
I
J
L
M A
B
LAN
Revision: 2005 July 2005 FX
VDC OFF indicator
lamp signal RT
SLIP indicator lamp
signal RT
Brake warning lamp
signal RT
System setting signal TR R
RT T
AWD warning lamp
signal TR
Distance to empty
signal RT
Parking brake switch
signal RR T
Door lock/unlock
request signal TR
Door lock/unlock sta-
tus signal RT
Starter permission
signal TR
Back door open
request signal TR
Power window open
request signal TR
Alarm request signal T R
Key warning signal T R
ICC sensor signal R T
ICC warning lamp
signal TR
ICC system display
signal TR
Current gear posi-
tion signal TR R
ICC steering switch
signal TR
ASCD operation sig-
nal TR
ASCD OD cancel
request signal TR
ICC OD cancel
request signal RT
A/T CHECK indica-
tor lamp signal TR
A/T position indica-
tor lamp signal TR
Signals ECM TCM
Dis-
play
con-
trol
unit AWD
con- trol
unit ICC
unit Intel-
ligent Key unit BCM Steer-
ing
angle
sen- sor LDW
cam- era
unit Uni-
fied
meter and
A/C
amp. ICC
sen-
sor ABS
actu- ator and
elec- tric
unit
(con- trol
unit) Driver
seat
con-
trol
unit IPDM
E/R

CAN SYSTEM (TYPE 1) LAN-63
[CAN]
C
D E
F
G H
I
J
L
M A
B
LAN
Revision: 2005 July 2005 FX
Case 10
Check steering angle sensor circuit. Refer to LAN-75, "Steering Angle Sensor Circuit Inspection" .
PKIB4450E
PKIB4314E

CAN SYSTEM (TYPE 1) LAN-75
[CAN]
C
D E
F
G H
I
J
L
M A
B
LAN
Revision: 2005 July 2005 FX
2. CHECK HARNESS FOR OPEN CIRCUIT
Check resistance between data link connector M5 terminals 6 (L)
and 14 (R).
OK or NG
OK >> Diagnose again. Refer to LAN-7, "TROUBLE DIAG-
NOSES WORK FLOW" .
NG >> Repair harness between data link connector and BCM.
BCM Circuit InspectionAKS00CFX
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of BCM for damage, bend and loose connection (control module side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect BCM connector.
2. Check resistance between BCM harness connector M3 termi- nals 39 (L) and 40 (R).
OK or NG
OK >> Replace BCM. Refer to BCS-16, "Removal and Installa-
tion of BCM" .
NG >> Repair harness between BCM and data link connector.
Steering Angle Sensor Circuit InspectionAKS00CFY
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of steering angle sensor for damage, bend and loose connection (sensor side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector. 6 (L) - 14 (R) : Approx. 54 - 66
Ω
PKIA9865E
39 (L) - 40 (R) : Approx. 54 - 66Ω
SKIA6869E