bcm INFINITI FX35 2005 Service Manual

WARNING CHIME DI-73
C
D E
F
G H
I
J
L
M A
B
DI
Revision: 2005 July 2005 FX
3. CHECK FRONT DOOR SWITCH (DRIVER SIDE)
Check front door switch (driver side).
OK or NG
OK >> Replace BCM. Refer to BCS-16, "Removal and Installa-
tion of BCM" .
NG >> Replace front door switch (driver side).
Key Warning Chime Does Not Operate (Without Intelligent Key)AKS005NW
1. CHECK FUSE
Check if the key switch 15A fuse [No. 22, located in the fuse block (J/B)] is blown. Refer to DI-63, "
Wiring Dia-
gram — CHIME —" .
Is the fuse blown?
YES >> Replace fuse. Be sure to repair the cause of malfunction before installing new fuse.
NO >> GO TO 2.
2. CHECK WARNING CHIME OPERATION
Check the chime under conditions in exception of key warning chime (without Intelligent Key) operation.
Does warning chime sound?
YES >> GO TO 3.
NO >> Go to DI-71, "
All Warnings Are Not Operated" or DI-72, "Key Warning Chime and Light Warning
Chime Does Not Operate (Seat Belt Warning Chime Does Operate)" .
1 – Door switch case ground
When driver side door
switch is released : Continuity should exist.
When driver side door
switch is pushed : Continuity should not exist.
PKIA3718E

DI-74
WARNING CHIME
Revision: 2005 July 2005 FX
3. CHECK BCM INPUT SIGNAL
With CONSULT-ll
1. Select “BCM”.
2. With “DATA MONITOR” of “BUZZER”, confirm “KEY ON SW” when the key is operated.
Without CONSULT-ll
Check voltage between BCM harness connector M3 terminal 37 (B/
W) and ground.
OK or NG
OK >> Replace BCM. Refer to BCS-16, "Removal and Installa-
tion of BCM" .
NG >> GO TO 4.
4. CHECK KEY SWITCH
1. Disconnect key switch connector.
2. Check continuity between key switch connector M23 terminals 1 and 2.
OK or NG
OK >> GO TO 5.
NG >> Replace key switch. “KEY ON SW”
When key is inserted to ignition
key cylinder : ON
When key is removed from
ignition key cylinder : OFF
SKIA1960E
37 (B/W) – Ground
When key is inserted to ignition
key cylinder : Approx. 12 V
When key is removed from
ignition key cylinder : Approx. 0 V
SKIA5048E
1 – 2
When key is inserted to
ignition key cylinder : Continuity should exist.
When key is removed
from ignition key cylinder : Continuity should not exist.
SKIA5049E

WARNING CHIME DI-75
C
D E
F
G H
I
J
L
M A
B
DI
Revision: 2005 July 2005 FX
5. CHECK KEY SWITCH CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M3 terminal 37 (B/W) and key switch harness connector M23 terminal 1 (B/
W).
3. Check continuity between BCM harness connector M3 terminal 37 (B/W) and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair harness or connector.
6. CHECK KEY SWITCH POWER SUPPLY CIRCUIT
Check voltage between key switch harness connector M23 terminal
2 (L/R) and ground.
OK or NG
OK >> Replace BCM. Refer to BCS-16, "Removal and Installa-
tion of BCM" .
NG >> Check harness between key switch and fuse.
Key Warning Chime Does Not Operate (With Intelligent Key, When Mechanical
Key Is Used)
AKS0079U
1. CHECK FUSE
Check if the key switch and ignition knob switch 10A fuse (No. 38, located in the fuse and fusible link box) is
blown. Refer to DI-63, "
Wiring Diagram — CHIME —" .
Is the fuse blown?
YES >> Replace fuse. Be sure to repair the cause of malfunction before installing new fuse.
NO >> GO TO 2.
2. CHECK WARNING CHIME OPERATION
Check the chime under conditions in exception of key warning chime (when mechanical key is used) opera-
tion.
Does warning chime sound?
YES >> GO TO 3.
NO >> Go to DI-71, "
All Warnings Are Not Operated" or DI-72, "Key Warning Chime and Light Warning
Chime Does Not Operate (Seat Belt Warning Chime Does Operate)" .
37 (B/W) – 1 (B/W) : Continuity should exist.
37 (B/W) – Ground : Continuity should not exist.
PKIB3833E
2 (L/R) – Ground : Battery voltage
SKIA5051E

DI-76
WARNING CHIME
Revision: 2005 July 2005 FX
3. CHECK BCM INPUT SIGNAL
With CONSULT-ll
1. Select “BCM”.
2. With “DATA MONITOR” of “BUZZER”, confirm “KEY ON SW” when the key is operated.
Without CONSULT-ll
Check voltage between BCM harness connector M3 terminal 37 (B/
W) and ground.
OK or NG
OK >> Replace BCM. Refer to BCS-16, "Removal and Installa-
tion of BCM" .
NG >> GO TO 4.
4. CHECK KEY SWITCH POWER SUPPLY CIRCUIT
1. Disconnect key switch and ignition knob switch connector.
2. Check voltage between key switch and ignition knob switch har- ness connector M22 terminal 3 (L/R) and ground.
OK or NG
OK >> GO TO 5.
NG >> Check harness between key switch and ignition knob switch and fuse.
“KEY ON SW”
When key is inserted to ignition
key cylinder : ON
When key is removed from
ignition key cylinder : OFF
SKIA1960E
37 (B/W) – Ground
When key is inserted to ignition
key cylinder : Approx. 12 V
When key is removed from
ignition key cylinder : Approx. 0 V
SKIA5048E
3 (L/R) – Ground : Battery voltage
SKIA5063E

WARNING CHIME DI-77
C
D E
F
G H
I
J
L
M A
B
DI
Revision: 2005 July 2005 FX
5. CHECK KEY SWITCH
Check continuity between key switch and ignition knob switch con-
nector M22 terminals 3 and 4.
OK or NG
OK >> GO TO 6.
NG >> Replace key switch and ignition knob switch.
6. CHECK KEY SWITCH CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M3 terminal 37 (B/W) and key switch and ignition knob switch harness con-
nector M22 terminal 4 (B/W).
3. Check continuity between BCM harness connector M3 terminal 37 (B/W) and ground.
OK or NG
OK >> Replace BCM. Refer to BCS-16, "Removal and Installa-
tion of BCM" .
NG >> Repair harness or connector.
Key Warning Chime Does Not Operate (With Intelligent Key, When Intelligent
Key Is Carried With The Driver)
AKS0079V
1. CHECK WARNING CHIME OPERATION
Check the chime under conditions in exception of key warning chime (when Intelligent Key is carried with the
driver) operation.
Does warning chime sound?
YES >> GO TO 2.
NO >> Go to DI-71, "
All Warnings Are Not Operated" or DI-72, "Key Warning Chime and Light Warning
Chime Does Not Operate (Seat Belt Warning Chime Does Operate)" .
2. CHECK INTELLIGENT KEY UNIT SELF-DIAGNOSIS
Perform the Intelligent Key unit self-diagnosis. Refer to BL-119, "
CONSULT-II Functions" .
OK or NG
OK >> GO TO 3.
NG >> Check the applicable parts. 3 – 4
When key is inserted to
ignition key cylinder : Continuity should exist.
When key is removed
from ignition key cylinder : Continuity should not
exist.
SKIA5060E
37 (B/W) – 4 (B/W) : Continuity should exist.
37 (B/W) – Ground : Continuity should not exist.
PKIB3578E

WARNING CHIME DI-79
C
D E
F
G H
I
J
L
M A
B
DI
Revision: 2005 July 2005 FX
5. CHECK IGNITION KNOB SWITCH
Check continuity between key switch and ignition knob switch con-
nector M22 terminals 1 and 2.
OK or NG
OK >> GO TO 6.
NG >> Replace key switch and ignition knob switch.
6. CHECK IGNITION KNOB SWITCH CIRCUIT
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit harness connector M34 terminal 27 (L/W) and key switch and ignition knob switch
harness connector M22 terminal 2 (L/W).
3. Check continuity between Intelligent Key unit harness connector M34 terminal 27 (L/W) and ground.
OK or NG
OK >> Replace Intelligent Key unit. Refer to BL-151, "Removal
and Installation of Intelligent Key Unit" .
NG >> Repair harness or connector.
Light Warning Chime Does Not OperateAKS007OJ
1. CHECK WARNING CHIME OPERATION
Check the chime under conditions in exception of light warning chime operation.
Does warning chime sound?
YES >> GO TO 2.
NO >> Go to DI-71, "
All Warnings Are Not Operated" .
2. CHECK BCM INPUT SIGNAL
1. Select “BCM”.
2. With “DATA MONITOR” of “BUZZER”, confirm “LIGHT SW 1ST” when the lighting switch is operated.
OK or NG
OK >> Replace BCM. Refer to BCS-16, "Removal and Installa-
tion of BCM" .
NG >> Check the lighting switch. Refer to LT- 11 0 , "
Removal
and Installation" .
1 – 2
When ignition knob
switch is pushed : Continuity should exist.
When ignition knob
switch is withdrawn : Continuity should not exist.
SKIA5066E
27 (L/W) – 2 (L/W) : Continuity should exist.
27 (L/W) – Ground : Continuity should not exist.
SKIA5067E
“LIGHT SW 1ST”
Lighting switch ON (1st position) : ON
Lighting switch OFF : OFF
PKIB1956E

DI-80
WARNING CHIME
Revision: 2005 July 2005 FX
Seat Belt Warning Chime Does Not OperateAKS005NX
1. CHECK WARNING CHIME OPERATION
Check the chime under conditions in exception of seat belt warning chime operation.
Does warning chime sound?
YES >> GO TO 2.
NO >> Go to DI-71, "
All Warnings Are Not Operated" .
2. CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Select “METER A/C AMP”.
2. With “DATA MONITOR” of “METER A/C AMP”, confirm “SEAT BELT W/L” when the seat belt is operated.
OK or NG
OK >> Replace BCM. Refer to BCS-16, "Removal and Installa-
tion of BCM" .
NG >> GO TO 3.
3. CHECK COMBINATION METER INPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between combination meter harness connector M20 terminal 9 (LG/R) and ground.
OK or NG
OK >> Replace combination meter.
NG >> GO TO 4.
4. CHECK SEAT BELT BUCKLE SWITCH
1. Turn ignition switch OFF.
2. Disconnect seat belt buckle switch (driver side) connector.
3. Check continuity between seat belt buckle switch (driver side) connector B160 terminals 60 and 61A.
OK or NG
OK >> GO TO 5.
NG >> Replace seat belt buckle switch (driver side). “SEAT BELT W/L”
When seat belt is fastened : OFF
When seat belt is unfastened : ON
SKIA6728E
9 (LG/R) – Ground
When seat belt is fastened : Approx. 12 V
When seat belt is unfastened : Approx. 0 V
SKIA5052E
60 – 61A
When seat belt is
fastened : Continuity should not exist.
When seat belt is
unfastened : Continuity should exist.
SKIA5053E

DI-84
LANE DEPARTURE WARNING SYSTEM
Revision: 2005 July 2005 FX
System Diagram
Components Description
NOTE:
*: This indicates in a few seconds for the system check during ignition switch ON.
POWER SUPPLY AND GROUND CIRCUIT
With the ignition switch in the ON or START position, power is supplied

through 10A fuse [No. 12, located in the fuse block (J/B)]

to LDW camera unit terminal 1.
Ground is supplied

to LDW camera unit terminals 6 and 12

through grounds M45, M85 and M35.
CAN CommunicationAKS00C6X
SYSTEM DESCRIPTION
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 two
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.
SKIB1784E
Component Description
LDW camera unit Detects the lane marker by the built-in camera, gives judgement for the warning according to the
result of detection and signals from each unit, and transmits the operation signal to LDW chime and
LDW indicator lamp.
LDW switch

Selects ON/OFF of the system.

Indicates ON/OFF of the signal with LDW system ON indicator.
LDW chime Gives a warning chime according to the direction from LDW camera unit.
LDW indicator lamp Installed in combination meter, and indicates the system condition.

Blinks when LDW system is functioning to alert the driver.

Stays on when LDW system is malfunctioning.*
BCM Transmits turn indicator signal to LDW camera unit with CAN communication signal.
ABS actuator and electric unit
(control unit) Transmits vehicle speed signal to LDW camera unit with CAN communication signal.
TCM Transmits vehicle speed signal to LDW camera unit with CAN communication signal. (For detecting
incorrect speed.)

DI-100
LANE DEPARTURE WARNING SYSTEM
Revision: 2005 July 2005 FX
DATA MONITOR
Operation Procedure
1. Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
2. Touch any of “ALL SIGNALS” and “SELECTION FROM MENU” on selection screen.
3. Touch “START”.
4. Display the data monitor.
5. If necessary, touch “COPY” in turn, and print data.
Monitored Item
× : Applicable
VHCL SPD DATA MALF
[C1B02] ××

Wheel sensor malfunction

ABS actuator and electric unit (control unit) malfunction

A/T vehicle speed sensor malfunction

TCM malfunction DI-105
ABNRML TEMP DETECT
[C1B03] ××
Temperature around LDW camera unit is excessively
high. DI-105
CAN COMM CIRCUIT
[U1000] ×× LDW camera unit detected CAN communication malfunc-
tion. DI-105
CONTROL UNIT (CAN)
[U1010] ××LDW camera unit detected internal CAN communication
circuit malfunction. DI-105
Display item [Code]LDW indicator
lamp Fail-safe Malfunctions detected where... Reference
page
Monitored Item [unit] ALL
SIGNALS SELECTION
FROM
MENU Description
MAIN SW
[ON/OFF] ××
Displays [ON/OFF] status as judged from LDW switch signal.
SW ON LAMP
[ON/OFF] ××
Displays [ON/OFF] status of LDW system ON indicator signal output.
INDICATE LAMP
[ON/OFF] ××
Displays [ON/OFF] status of LDW indicator signal output.
BUZZER OUTPUT
[ON/OFF] ××
Displays [ON/OFF] status of LDW chime operation signal output.
LDW INACCURAT
[ON/OFF] ××
Displays LDW camera unit status.
VHCL SPD SE
[km/h] or [mph] ×× Displays vehicle speed calculated by LDW camera unit through CAN commu-
nication [ABS actuator and electric unit (control unit) transmits wheel sensor
signal through CAN communication].
VHCL SPD AT
[km/h] or [mph] ×× Displays vehicle speed calculated from A/T vehicle speed sensor by LDW
camera unit through CAN communication (TCM transmits A/T vehicle speed
sensor signal through CAN communication).
TURN SIGNAL
[OFF/LH/RH] ×× Displays “Turn signal” status, determined from BCM through CAN communica-
tion.
LANE DETCT LH
[ON/OFF] ××
Displays left lane marker is detected.
LANE DETCT RH
[ON/OFF] ××
Displays right lane marker is detected.
CROSS LANE LH
[ON/OFF] ××
Displays vehicle is crossing left lane.
CROSS LANE RH
[ON/OFF] ××
Displays vehicle is crossing right lane.
WARN LANE LH
[ON/OFF] ××
Displays warning for left lane.

ELECTRICAL LOAD SIGNAL EC-679
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2005 July 2005 FX
ELECTRICAL LOAD SIGNALPFP:25350
DescriptionABS006YP
The electrical load signal (Headlamp switch signal, etc.) is transferred through the CAN communication line
from BCM to ECM via IPDM E/R.
CONSULT-II Reference Value in Data Monitor ModeABS006YQ
Specification data are reference values.
Diagnostic ProcedureABS006YR
1. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
1. Turn ignition switch ON.
2. Connect CONSULT-II and select “DATA MONITOR” mode.
3. Select “LOAD SIGNAL” and check indication under the following conditions.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
Check “LOAD SIGNAL” indication under the following conditions.
OK or NG
OK >> INSPECTION END
NG >> GO TO 4.
3. CHECK REAR WINDOW DEFOGGER SYSTEM
Refer to GW-86, "
REAR WINDOW DEFOGGER" .
>> INSPECTION END
4. CHECK HEADLAMP SYSTEM
Refer to LT- 7 , "
HEADLAMP - XENON TYPE -" .
>> INSPECTION END
MONITOR ITEM CONDITION SPECIFICATION
LOAD SIGNAL

Ignition switch: ON Rear window defogger switch is ON
and/or lighting switch is in 2nd. ON
Rear window defogger switch is OFF
and lighting switch is OFF. OFF
Condition Indication
Rear window defogger switch: ON ON
Rear window defogger switch: OFF OFF
PBIB0103E
Condition Indication
Lighting switch: ON at 2nd position ON Lighting switch: OFF OFF
PBIB0103E