bcm INFINITI FX35 2005 Service Manual

CAN COMMUNICATION LAN-41
[CAN]
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Revision: 2005 July 2005 FX
*: VK45DE engine model only 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
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 sig-
nal TR
A/T position indicator lamp sig-
nal TR
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
Snow mode switch signal R T
Current gear position signal* R T
Next gear position signal* R T
Shift change signal* R T
Shift pattern signal* R T
Tire pressure signal T R Signals ECM TCM
Dis-
play
unit AWD
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-42
[CAN]
CAN COMMUNICATION
Revision: 2005 July 2005 FX
TYPE 7/TYPE 8
System Diagram

Ty p e 7

Ty p e 8
Input/Output Signal Chart
T: Transmit R: Receive
PKIB4197E
PKIB4174E
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
A/T self-diagnosis
signal RT
ABS operation signal R T
TCS operation signal R T
VDC operation signal R R T
Stop lamp switch sig-
nal RR T

CAN COMMUNICATION LAN-43
[CAN]
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Revision: 2005 July 2005 FX
Battery voltage sig-
nal TR
Key switch signal T R
Ignition switch signal T R R
P range signal T R R R
Closed throttle posi-
tion signal TR R
Wide open throttle
position signal TR
Engine speed signal T R R R R R R
Engine status signal T R
Engine coolant tem-
perature signal TR
Accelerator pedal
position signal TR R R R
Fuel consumption
monitor signal TR
RT
Turbine revolution
signal RT R
Output shaft revolu-
tion signal RT R R
A/C switch signal R T
A/C compressor
request signal T
R
A/C compressor
feedback signal TR
Blower fan motor
switch signal RT
A/C switch/indicator
signal TR
RT
Cooling fan speed
request signal T
R
Position light request
signal RTR R
Low beam request
signal TR
Low beam status sig-
nal R
T
High beam request
signal TR R
High beam status
signal R
T
Front fog light
request 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

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]
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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

LAN-46
[CAN]
CAN COMMUNICATION
Revision: 2005 July 2005 FX
*: VK45DE engine model only A/T shift schedule
change demand sig-
nal R
T
Manual mode signal R T
Not manual mode
signal RT
Manual mode shift up
signal RT
Manual mode shift
down signal RT
Manual mode indica-
tor signal TR
Ignition knob switch
signal TR
Snow mode switch
signal RT
TR
Current gear posi-
tion signal* RT
Next gear position
signal* RT
Shift change signal* R T
Shift pattern signal* R T
VDC OFF switch sig-
nal 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

LAN-62
[CAN]
CAN SYSTEM (TYPE 1)
Revision: 2005 July 2005 FX
Case 9
Check BCM circuit. Refer to LAN-75, "BCM Circuit Inspection" .
PKIB4449E
PKIB4313E

CAN SYSTEM (TYPE 1) LAN-75
[CAN]
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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

LAN-78
[CAN]
CAN SYSTEM (TYPE 1)
Revision: 2005 July 2005 FX
IPDM E/R Circuit InspectionAKS00CG2
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check following terminals and connectors for damage, bend and loose connection (control module side and harness side).
–IPDM E/R connector
–Harness connector E205
–Harness connector B5
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect IPDM E/R connector.
2. Check resistance between IPDM E/R harness connector E9 ter- minals 48 (L) and 49 (R).
OK or NG
OK >> Replace IPDM E/R.
NG >> Repair harness between IPDM E/R and harness con- nector B8.
CAN Communication Circuit InspectionAKS00CG3
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check following terminals and connectors for damage, bend and loose connection (control module side, control unit side, unit side, sensor side, meter side and harness side).
–ECM
–A/T assembly
–Display unit
–BCM
–Steering angle sensor
–Unified meter and A/C amp.
–ABS actuator and electric unit (control unit)
–Driver seat control unit
–IPDM E/R
–Between ECM and IPDM E/R
–Between ECM and A/T assembly
–Between ECM and driver seat control unit
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector. 48 (L) - 49 (R) : Approx. 108 - 132
Ω
SKIB1363E

CAN SYSTEM (TYPE 1) LAN-79
[CAN]
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Revision: 2005 July 2005 FX
2. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect following connectors.
–ECM connector
–Harness connector M82
–Display unit connector
–BCM connector
–Steering angle sensor connector
–Unified meter and A/C amp. connector
–Harness connector M41
2. Check continuity between data link connector M5 terminals 6 (L) and 14 (R).
OK or NG
OK >> GO TO 3.
NG >> Check the following harnesses. If any harness is dam- aged, repair the harness.

Harness between data link connector and ECM

Harness between data link connector and harness
connector M82

Harness between data link connector and display unit

Harness between data link connector and BCM

Harness between data link connector and steering angle sensor

Harness between data link connector and unified meter and A/C amp.

Harness between data link connector and harness connector M41
3. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between data link connector M5 terminals 6 (L), 14
(R) and ground.
OK or NG
OK >> GO TO 4.
NG >> Check the following harnesses. If any harness is dam- aged, repair the harness.

Harness between data link connector and ECM

Harness between data link connector and harness
connector M82

Harness between data link connector and display unit

Harness between data link connector and BCM

Harness between data link connector and steering angle sensor

Harness between data link connector and unified meter and A/C amp.

Harness between data link connector and harness connector M41
6 (L) - 14 (R) : Continuity should not exist.
PKIA9865E
6 (L) - Ground : Continuity should not exist.
14 (R) - Ground : Continuity should not exist.
PKIA9872E