2007 INFINITI FX35 ACC

UNIFIED METER AND A/C AMP DI-35
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Revision: 2006 July 2007 FX35/FX45
2. CHECK METER/GAUGES VISUALLY
Check the pointer on the meter/gauge fluctuate at the engine start.
Is the fluctuation acceptable?
YES >> GO TO 3.
NO >> GO TO 6.
3. CHECK CONTINUITY COMMUNICATION CIRCUIT (TX: COMBINATION METER)
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and unified meter and A/C amp. connector.
3. Check continuity between combination meter harness connector M20 terminal 13 and unified meter and A/C amp. harness con-
nector M55 terminal 19.
4. Check continuity between combination meter harness connector M20 terminal 13 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK VOLTAGE OF UNIFIED METER AND A/C AMP.
1. Connect unified meter and A/C amp. connector.
2. Turn ignition switch ON.
3. Check voltage between combination meter harness connector M20 terminal 13 and ground.
OK or NG
OK >> GO TO 5.
NG >> Replace unified meter and A/C amp. Refer to DI-37,
"Removal and Installation of Unified Meter and A/C
Amp."
13 – 19 : Continuity should exist.
13 – Ground : Continuity should not exist.
SKIA4837E
13 – Ground : Approx. 5 V
SKIA4886E

WARNING CHIME DI-57
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Revision: 2006 July 2007 FX35/FX45
IGNITION KEY WARNING CHIME (WITHOUT INTELLIGENT KEY)
With the key inserted into the key switch, and the ignition switch in OFF or ACC position, when driver's door is
opened, the ignition key warning chime will sound.

BCM detects key inserted into the key switch, ignition switch in OFF or ACC position, and front door
switch (driver side) ON. And then transmits buzzer output signal (ignition key warning chime) to unified
meter and A/C amp. with CAN communication.

Unified meter and A/C amp. transmits buzzer output signal (ignition key warning chime) to combination
meter with communication line.

When combination meter receives buzzer output signal (ignition key warning chime), it sounds the buzzer.
IGNITION KEY WARNING CHIME (WITH INTELLIGENT KEY)
When Mechanical Key Is Used
With the key inserted into the ignition switch, and the ignition switch LOCK or ACC position, when driver's door
is opened, the warning chime will sound.

BCM detects key inserted into the key switch, ignition switch in LOCK or ACC position, and front door
switch (driver side) ON. And then transmits buzzer output signal (ignition key warning chime) to unified
meter and A/C amp. with CAN communication.

Unified meter and A/C amp. transmits buzzer output signal (ignition key warning chime) to combination
meter with communication line.

When combination meter receives buzzer output signal (ignition key warning chime), it sounds the buzzer.
When Intelligent Key Is Carried With The Driver
Refer to BL-91, "WARNING AND ALARM FUNCTION" .
SKIB6481E
SKIB7258E

DI-58
WARNING CHIME
Revision: 2006 July 2007 FX35/FX45
LIGHT WARNING CHIME
With ignition switch in LOCK or ACC position, driver's door is opened, and lighting switch in 1ST or 2ND posi-
tion, the light warning chime will sound.

BCM detects ignition switch in LOCK or ACC position, front door switch (driver side) ON, and lighting
switch in 1ST or 2ND position. And then transmits buzzer output signal (light warning chime) to unified
meter and A/C amp. with CAN communication.

Unified meter and A/C amp. transmits buzzer output signal (light warning chime) to combination meter
with communication line.

When combination meter receives buzzer output signal (light warning chime), it sounds the buzzer.
NOTE:
For further details of combination switch, refer to BCS-3, "
COMBINATION SWITCH READING FUNCTION" .
SEAT BELT WARNING CHIME
With ignition switch turned ON and driver's seat belt unfastened, seat belt warning chime will sound for
approximately 6 seconds.

Combination meter reads a ON/OFF signal from seat belt buckle switch (driver side), and transmits seat
belt buckle switch signal to unified meter and A/C amp. with communication line.

BCM receives seat belt buckle switch signal from unified meter and A/C amp. with CAN communication.

BCM detects ignition switch turned ON and seat belt buckle switch (driver side) ON. And then transmits
buzzer output signal (seat belt warning chime) to unified meter and A/C amp. with CAN communication.

Unified meter and A/C amp. transmits buzzer output signal (seat belt warning chime) to combination
meter with communication line.

When combination meter receives buzzer output signal (seat belt warning chime), it sounds the buzzer.
NOTE:
When ignition key warning chime, light warning chime, and seat belt warning chime should be performed at
the same time, the priorities for each chime are the following.
1. Seat belt warning chime
2. Light warning chime
3. Ignition key warning chime
SKIB3858E
SKIB6482E

LANE DEPARTURE WARNING SYSTEM DI-77
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Revision: 2006 July 2007 FX35/FX45
LANE DEPARTURE WARNING SYSTEM PFP:28442
Precautions for Lane Departure Warning (LDW) systemNKS00311
WARNING:
Lane Departure Warning (LDW) is only a warning device to inform the driver of an unintended lane
departure. It will not steer the vehicle or prevent loss of control. It is the driver's responsibility to stay
alert, drive safely, keep the vehicle in the traveling lane, and be in control of the vehicle at all times.

LDW system does not operate under the following conditions:
–At speeds below approx. 72 km/h (45 MPH).
–If it cannot detect lane markers.

LDW system may not function properly under the following conditions:
–On roads where a water puddle, dirt or snow is covering the lane markers.
–On roads where the lane markers are faded or are not painted clearly.
–On roads where the lane markers are painted yellow.

LDW system may not monitor the lane markers in certain road, weather or driving conditions.
–On roads where there are sharp curves.
–Where the traveling lane merges or separates.
–On roads where the discontinued lane markers are present, such as near tollgates, etc.
–On roads where there are not general lane markers.
–On roads where the lane width is too narrow.
–During bad weather (rain, fog, snow, etc.).
–When strong light (for example, at sunrise or sunset) is directly shining on the front of the vehicle.
–When entering or exiting a tunnel where sudden changes in brightness occur.
–When traveling close to the vehicle in front of you, which causes obstruction of the camera unit
range.
–When the vehicle's traveling direction does not align with the lane marker.
–When rain, snow or dirt adhere to the windshield in front of the camera unit.

Excessive noise interferes with warning system chime sound and the chime may not be heard.
CAUTION:
To keep the LDW system operating properly, be sure to observe the following:

Always keep the windshield clean. The sensing capability of the camera unit depends on the con-
dition of the windshield. See “Appearance and care” for cleaning instruction.

Never strike or damage the areas around the camera unit.

Never touch the camera lens.

Never attach a sticker (including transparent material) or install an accessory near the camera
unit.

Never place reflective materials, such as a white paper or mirrors on the instrument panel. Reflec-
tion of the sunlight may adversely affect the camera unit's lane marker detection capability.
System DescriptionNKS00312
LDW SYSTEM OPERATION

The Lane Departure Warning (LDW) system warns the driver when the vehicle is traveling close to either
the left or the right of the traveling lane.

The system monitors lane markers of the traveling lane using the LDW camera unit. When the LDW cam-
era unit detects that the vehicle is traveling close to either the left or the right of the traveling lane, the
LDW indicator lamp flashes and a chime sounds to alert the driver.
NOTE:
When activating turn signal, LDW system does not give a warning to the lane marker on the turn signal
side.

The LDW system can be turned on or off by pushing the LDW switch. When the system is on, the LDW
system ON indicator illuminates.

The LDW system has an automatic mode and manual mode.

LANE DEPARTURE WARNING SYSTEM DI-79
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Revision: 2006 July 2007 FX35/FX45
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.
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-80
LANE DEPARTURE WARNING SYSTEM
Revision: 2006 July 2007 FX35/FX45
Action TestNKS00314
LDW SYSTEM RUNNING TEST
WARNING:

Be careful when performing road test.

Understand “Precautions” and “System Description” well before the road test. Refer to DI-77,
"Precautions for Lane Departure Warning (LDW) system" and DI-77, "System Description" .
Function Check
Check the LDW system operation according to the condition that the warning function works. Refer to DI-77,
"LDW SYSTEM OPERATION" .
Camera Aiming AdjustmentNKS00315
OUTLINE
Adjust the camera aiming every time the LDW camera unit is removed or installed.
CAUTION:

Place the vehicle on the level ground when the camera aiming adjustment is operated.

Follow the CONSULT-II when adjusting the camera aiming. (Camera aiming adjustment cannot be
operated without CONSULT-II.)
PREPARATION

Keep all tires inflated to correct pressures. Adjust the tire pressure to the specified pressure value.

There is no-load in vehicle. Check if coolant, engine oil are filled up to correct level and fuel tank is full.

Shift the gear into “P” position and release the parking brake.

Clean the windshield.
NOTE:
Do not place anything reflective on the upper surface of instrument panel.
TARGET SETTING
Preparation Aiming Adjustment Jig
For aiming adjustment, prepare the following jigs and targets.
PKIB4693E

DI-84
LANE DEPARTURE WARNING SYSTEM
Revision: 2006 July 2007 FX35/FX45
3. Touch “LDW” on “SELECT SYSTEM” screen.
If “LDW” is not displayed, go to GI-39, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
4. Touch “WORK SUPPORT” on “SELECT DIAG MODE” screen.
5. Touch “AUTO AIM” on “SELECT WORK ITEM” screen.
6. The target should be accurately placed. The vehicle should be stopped.
After confirming the above, touch “START” to perform aiming.
CAUTION:
Never touch “START” when the target is not placed.
BCIA0030E
BCIA0031E
PKIB4696E
SKIB3146E

LANE DEPARTURE WARNING SYSTEM DI-93
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Revision: 2006 July 2007 FX35/FX45
Display Item
NOTE:

When a DTC is detected, the LDW system dose not operate.

When the DTC except “ABNRML TEMP DETECT [C1B03] ” is detected, the LDW indicator lamp turns ON.

When the DTC “ABNRML TEMP DETECT [C1B03] ” is detected, the LDW system ON indicator lamp blinks.
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
Display item [Code] Malfunctions detected where... Reference
page
CAMERA UNIT MALF [C1B00] LDW camera unit internal malfunction DI-97
CAM AIMING INCMP [C1B01] LDW camera aiming is not adjusted.DI-97
VHCL SPD DATA MALF [C1B02] LDW camera unit detected different vehicle speed signal from TCM and ABS
actuator and electric unit (control unit). DI-97
ABNRML TEMP DETECT [C1B03] Temperature around LDW camera unit is excessively high.
DI-98
CAN COMM CIRCUIT [U1000] LDW camera unit detected CAN communication malfunction.DI-98
CONTROL UNIT (CAN) [U1010] LDW camera unit detected internal CAN communication circuit malfunction.DI-98
Monitored Item [unit] 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 communication [ABS
actuator and electric unit (control unit) transmits wheel sensor signal through CAN commu-
nication].
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 communication.
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.
WARN LANE RH [ON/OFF] Displays warning for right lane.
VALID POS LH [VLD/INVLD] Displays lateral position for left lane marker is valid.
VALID POS RH [VLD/INVLD] Displays lateral position for right lane marker is valid.
AIMING DONE [OK/NG] Displays camera aiming done.
AIMING RESULT [OK/NOK] Displays camera aiming result.
FCTRY AIM YAW [deg] Displays camera unit installation condition.
FCTRY AIM ROL [deg] Displays camera unit installation condition.