DAS
DIAGNOSIS SYSTEM (ITS CONTROL UNIT)DAS-83
< SYSTEM DESCRIPTION > [LDW]
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DIAGNOSIS SYSTEM (ITS CONTROL UNIT)
CONSULT Function (AVM)INFOID:0000000009951637
CAUTION:
After disconnecting the CONSULT vehicle interface (VI) from the data link connector, the ignition must
be cycled OFF → ON (for at least 5 seconds) → OFF. If this step is not performed, the BCM may not go
to ”sleep mode”, potentiall y causing a discharged battery and no-start condition.
APPLICATION ITEMS
CONSULT performs the following functions via CAN communication using ITS control unit.
SELF DIAGNOSTIC RESULT
Refer to DAS-89, "DTC Index".
DATA MONITOR
Diagnosis mode Description
Self Diagnostic Result Displays the name of a malfunctioning system stored in the ITS control unit
Data Monitor Displays ITS control unit input/output data in real time
Work support Displays causes of automatic system cancellation occurred during system control
Active Test Enables an operational check of a load by transmitting a driving signal from the ITS control unit to
the load
ECU identification Displays ITS control unit part number
Configuration The vehicle specification can be written when replacing the ITS control unit
Monitored item [Unit] Description
ST ANGLE SENSOR SIGNAL
[On/Off] Indicates [On/Off] status as judged from ITS control unit (Angle sensor transmits angle signal
through CAN communication)
REVERSE SIGNAL
[On/Off] Indicates [On/Off] status as judged from ITS control unit (TCM transmits reverse signal
through CAN communication)
VEHICLE SPEED SIGNAL
[On/Off] Indicates vehicle speed calculated from ITS control unit through CAN communication [ABS ac-
tuator and electric unit (control unit) transmits vehicle speed signal (wheel speed) through
CAN communication]
CAMERA SWITCH SIGNAL
[On/Off] Indicates [On/Off] status of camera switch signal as judged from ITS control unit
CAMERA OFF SIGNAL
[On/Off] Indicates [On/Off] status of camera OFF signal as judged from ITS control unit
ST ANGLE SENSOR TYPE
[Absolute/Not] Indicates whether steering angle sensor type is absolute or not (ON means “controlling”)
STEERING GEAR RATIO TYPE
[Type 0/1] Indicates the type of the steering gear ratio (type 1 or 2)
STEERING POSITION
[LHD/RHD] Indicates the steering
position (LHD or RHD)
REAR CAMERA IMAGE SIGNAL
[OK/Not] Indicates the status of the rear camera image as read from ITS control unit through dedicated
ITS communication lines
WASH SW
[ON/OFF] Indicates the state of the wash switch indicator output
R-CAMERA COMM STATUS
[OK/Not] Indicates the status of the rear camera communication status as read from ITS control unit
through dedicated ITS communication lines
R-CAMERA COMM LINE
[OK/Not] Indicates the condition of the rear camera communication line whether transmitting properly
through dedicated ITS communication lines
PUMP COMM STATUS
[OK/NG] Indicates the state of the communication signal from pump control unit
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
DAS
PRE-INSPECTION FOR DIAGNOSISDAS-103
< BASIC INSPECTION > [LDW]
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PRE-INSPECTION FOR DIAGNOSIS
Inspection ProcedureINFOID:0000000009464736
1.CHECK CAMERA LENS
Is camera lens contaminated with foreign materials?
YES >> Clean camera lens.
NO >> GO TO 2.
2.CHECK REAR VIEW CAMERA UNIT INSTALLATION CONDITION
Check rear view camera unit installation condi tion (installation position, properly fitted).
Is it properly installed?
YES >> GO TO 3.
NO >> Install rear view camera unit properly, and perform rear view camera calibration. Refer to DAS-
107, "Description".
3.CHECK VEHICLE HEIGHT
Check vehicle height. Refer to FSU-26, "Wheelarch Height (Unladen*
1)".
Is vehicle height appropriate?
YES >> Inspection End.
NO >> Repair vehicle to appropriate height.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
DAS-108
< BASIC INSPECTION >[LDW]
REAR VIEW CAMERA CALIBRATION
>> Refer to
DAS-108, "Work Procedure (Target Setting)".
Work Procedure (Target Setting)INFOID:0000000009464743
CAUTION:
• Perform this operation in a horizo ntal position where there is a clear view for 3 m (9.84 ft) backward
and 4 m (13.12 ft) wide.
• Place the target in a well-lighted location. (Poor lighting may make it hard to adjust.)
• The target may not be detected when it shines by the reflected light of the sun or lighting.
• The target may not be detected when there is the same pattern of black and white as the target when
the pattern is within 0.5 m (1.64 ft) from either si de and upward/downward position from the target. (It
is desirable that the vehicle is positioned on a single-color floor.)
1.TA R G E T S E T T I N G
1. Mark points “A”, “B”, “C” and “D” at the center of the lateral sur-
face of each wheel.
NOTE:
Hang a string with a cone from the fender so as to pass through
the center of wheel, and then mark a point at the center of the
lateral surface of the wheel.
2. Draw line “LH” passing through points “A” and “B” on the left side of vehicle.
NOTE:
Approximately 2.2 m (7.22 ft) or more at the rear from the rear
axle.
3. Mark point “E” on the line “LH” at the positions 2125 mm (83.66
in) from point “B”.
4. Draw line “RH” passing through points “C” and “D” on the right side of vehicle in the same way as step 2.
5. Mark point “F” on the line “RH” at the positions 2125 mm (83.66 in) from point “D”.
6. Draw line “RW” passing through the points “E” and “F” on the rear of the vehicle. NOTE:
Approximately 1.8 m (5.91 ft) or more at bot h left and right sides from vehicle center.
7. Mark point “C
t” at the center of point “E” and “F” on the line “RW”.
CAUTION:
Make sure that “E” to “C
t” is equal to “F” to “Ct”.
8. Mark point "Lt" and "Rt" on the line "RW" at the positions 1500 mm (59.06 in) from point "Ct".
9. Position the center of the target mark to point of “Ct”. Side distance (S
d): “B”–“E” (“D”–“F”) : 2125 mm (83.66 in)
Left distance (L
d): “Ct”–“Lt” : 1500 mm (59.06 in)
Right distance (R
d): “Ct”–“Rt” : 1500 mm (59.06 in)
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Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
DAS
NORMAL OPERATING CONDITIONDAS-141
< SYMPTOM DIAGNOSIS > [LDW]
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NORMAL OPERATING CONDITION
DescriptionINFOID:0000000009464793
PRECAUTIONS FOR LANE DEPARTURE WARNING (LDW)
• LDW system is only a warning devic e to inform the driver of a potential unintended lane departure. It will not
steer the vehicle or prevent loss of c ontrol. 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 will not operate at s peeds below approximately 70 km/h (45 MPH) or if it cannot detect lane
markers.
• Excessive noise will interfere with the warning chime sound, and the chime may not be heard.
• LDW system may not function proper ly under the following conditions:
- On roads where there are multiple parallel lane marker s; lane markers that are faded or not painted clearly;
yellow painted lane markers; non-standard lane markers; or lane markers covered with water, dirt or snow,
etc.
- On roads where the discontinued lane markers are still detectable.
- On roads where there are sharp curves.
- On roads where there are sharply contrasting objects, such as shadows, snow, water, wheel ruts, seams or
lines remaining after road repairs. (The LDW syst em could detect these items as lane markers.)
- On roads where the traveling lane merges or separates.
- When the vehicle's traveling direction does not align with the lane marker.
- When traveling close to other vehicle in front of the vehicle, which obstructs the lane camera unit detection
range.
- When rain, snow or dirt adheres to the windshield in front of the lane camera unit.
- When a sudden change in brightness occurs. (For exampl e, when the vehicle enters or exits a tunnel or
under a bridge.)
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
DAS-142
< REMOVAL AND INSTALLATION >[LDW]
WARNING SYSTEMS SWITCH
REMOVAL AND INSTALLATION
WARNING SYSTEMS SWITCH
Removal and InstallationINFOID:0000000009464796
REMOVAL
1. Remove the instrument lower panel LH. Refer to
IP-21, "Removal and Installation".
2. Remove screws ( ) that retain the upper switch carrier (1) to the instrument lower panel LH (2).
3. Release upper tab (B) and lower tab (C) using a suitable tool (A), then remove the warning system switch (4) from the upper
switch carrier.
(1) Trunk opener switch
(2) VDC switch
(3) Heated steering wheel switch
INSTALLATION
Installation is in the reverse order of removal.
ALOIA0143ZZ
ALOIA0144ZZ
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
DAS-150
< SYSTEM DESCRIPTION >[BSW]
COMPONENT PARTS
Component Description
INFOID:0000000009464806
1. Combination meter 2. Vehicle information display 3. BCM (view with combination meter re- moved)
4. Blind spot warning indicator RH 5. Blind spot warning indicator LH 6. TCM
7. ECM 8. Warning systems switch 9. Warning systems ON indicator
10. Rear view camera washer control unit 11. Rear view camera air pump motor 12. Rear view camera
13. AV control unit (center display) (with navi- gation system and bose audio system)
Audio unit (center display) (with display
audio system and bose audio system) 14. ITS control unit
(view with center console removed) 15. Steering angle sensor
(view with steeri ng wheel removed)
16. Washer fluid level switch (view with front fascia removed)
Component Description
ITS control unit • Being connected with rear view camera via ITS communication, receives vehicle detection signal
and transmits Blind Spot Warning indicator signal and Blind Spot Warning indicator dimmer sig-
nal to the rear view camera
• Being connected with lane camera unit via ITS communication, receives detected lane condition
signal
• Receives steering angle sensor signal from steering angle sensor via CAN communication
• Judges a Blind Spot Warning indicator ON/OFF state and an approach state to the lane marker,
based on each signal.
• Activates the warning buzzer and warning systems ON indicator
• Transmits Blind Spot Warning ON indicator signal to combination meter via CAN communication
Blind Spot Warning indicator LH/
RH Receives Blind Spot Warning indicator operation signal from rear view camera and turns OFF, turns
ON or blinks
Warning systems switch Inputs the switch signal to ITS control unit
Warning systems ON indicator
(On the warning systems switch) Indicates BSW system status
Rear view camera • Detects the lane marker by the built-in camera
• Transmits detected lane condition signal to ITS control unit
ABS actuator and electric unit
(control unit) • Transmits vehicle speed signal to ITS control unit via CAN communication
• Transmits yaw rate signal/side G sensor signal to ITS control unit via CAN communication
Buzzer (combination meter) Receives buzzer signal from ITS control unit and sounds buzzer.
Combination meter • Turns the Blind Spot Warning indicator ON/OFF according to the signals from the ITS control unit
via CAN communication
• Receives Blind Spot Warning ON indicator signal via CAN communication.
Steering angle sensor Transmits steering angle sensor signal to ITS control unit via CAN communication
BCM • Transmits turn signal indicator to ITS control unit via CAN communication
• Transmits dimmer signal to ITS control unit via CAN communication
ECM Transmits engine speed signal to ITS control unit via CAN communication
TCM Transmits the output shaft speed signal, input speed signal, current gear position signal and shift
position signal to ITS control unit via CAN communication
AV c o n t r o l u n i t
(with navigation system and bose
audio system) Receives the various systems and camera signals via CAN communication and routes them to the
center display
Audio unit
(with display audio system and
bose audio system) Receives the various systems and camera signals and routes them to the center display
Center display Displays the various system screen signals according to the priority level received via CAN com-
munication
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
DAS-152
< SYSTEM DESCRIPTION >[BSW]
SYSTEM
SYSTEM
System DescriptionINFOID:0000000009464807
SYSTEM DIAGRAM
CONTROL UNIT INPUT/OUTPUT SIGNAL ITEM
Control unit receives signals via CAN communication. It al
so detects vehicle conditions that are necessary for
BSW control.
Input Signal Item
Output Signal Item
AWOIA0038GB
Transmit unit Signal name Description
ECM CAN Communication Engine status signal Receive engine status
BCM CAN communication Door open status signal Receive door open status
Light status signal Receive light status
ABS actuator
and electric unit
(control unit) CAN communication Wheel speed signal Receive wheel speed
TCM CAN communication Shift selector position signal Receive shift selector position
Combination
meter CAN communication Moving Object Detection ON/
OFF signal Receive the ON/OFF status for Moving Object Detection
function
Rear view cam-
era NTSC Video signal
Receive Rear View Camera
image from camera for Mov-
ing Object Detection function in ITS controller
Reception unit Signal name Description
Combination
meter CAN communication Buzzer request Transmits a buzzer request signal when the moving
object is detected
Display CAN communication Visual signal request Transmits a visual signal request from ITS Controller
to display Rear View while the shift selector is in R (re-
verse)
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
DAS
HANDLING PRECAUTIONDAS-157
< SYSTEM DESCRIPTION > [BSW]
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HANDLING PRECAUTION
Precautions for Blind Spot WarningINFOID:0000000009464811
REAR VIEW CAMERA HANDLING
The rear camera unit “1” for the LDW/BSW sy stems is located above the rear license plate.
To keep the proper operation of the LDW systems and prev ent a system malfunction, be sure to observe the
following:
• Always keep the camera lens clean. Be careful not to damage the nozzle of the automatic washer and
blower.
• Do not attach ”license plate accessories” that reflect light.
• Do not strike or damage the areas around the camera unit.
BLIND SPOT WARNING (BSW)
• BSW system is not a replacement for proper drivi ng procedure and is not designed to prevent contact with
vehicles or objects. When changing lanes, always use the side and rear mirrors and turn and look in the
direction you will move to ensure it is safe to change lanes. Never rely solely on the BSW system.
• The camera unit may not detect properly under the following conditions:
- When towing a trailer.
- When strong light enters the camera unit. (For exampl e, direct sunlight or headlight from the rear.)
- When ambient light changes instantly. (For example, when the vehicle enters or exits a tunnel or passes
under a bridge.)
• Automatic washer and blower may not be able to secu re detection capability when excessive dirt adheres on
the camera lens.
• Excessive noise (e.g. audio system volume, open vehicle window) will interfere with the chime sound, and it
may not be heard.
• The camera unit may not be able to detect when certain objects are present such as:
- Pedestrians, bicycles, animals.
- Several types of vehicles such as motorcycles.
- Oncoming vehicles.
- A vehicle approaching rapidly from behind
- A vehicle which your vehicle overtakes rapidly.
• The camera unit may not be able to detect properly when your vehicle travels beside the middle section of a
vehicle with a long wheelbase (e.g., trailer truck, semi-trailer, tractor).
• The camera unit is designed to ignore most stationary objects, however objects such as guardrails, walls,
foliage and parked vehicles may occasionally be det ected. This is a normal operating condition.
• The camera unit may detect reflection image of vehicles or roadside objects that are not actually in the
detection zone, especially when the road is wet.
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Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM