Driver Assistance System (Ldw) (Sedan): Other Nissan Altima L33

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. Information necessary to service the system safely is included in the SRS AIRBAG (SEDAN) and SEAT BELTS (SEDAN) Article of this Service Information.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

Precaution for Work

1. When removing or disassembling each component, be careful not to damage or deform it. If a component may be subject to interference, be sure to protect it with a shop cloth.
2. When removing (disengaging) components with a screwdriver or similar tool, be sure to wrap the component with a shop cloth or vinyl tape to protect it.
3. Protect the removed parts with a shop cloth and prevent them from being dropped.
4. Replace a deformed or damaged clip.
5. If a part is specified as a non-reusable part, always replace it with a new one.
6. Be sure to tighten bolts and nuts securely to the specified torque.
7. After installation is complete, be sure to check that each part works properly.
8. Follow the steps below to clean components: Water soluble dirt
9. Dip a soft cloth into lukewarm water, wring the water out of the cloth and wipe the dirty area.
10. Then rub with a soft, dry cloth. Oily dirt
11. Dip a soft cloth into lukewarm water with mild detergent (concentration: within 2 to 3%) and wipe the dirty area.
12. Then dip a cloth into fresh water, wring the water out of the cloth and wipe the detergent off.
13. Then rub with a soft, dry cloth. Do not use organic solvent such as thinner, benzene, alcohol or gasoline. For genuine leather seats, use a genuine leather seat cleaner.

Precaution for LDW System Service

Special Service Tool

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number (Kent-Moore No.) Tool name Description - (J-46534) Trim Tool Set Removing trim components

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Input Signal Item

Output Signal Item

OPERATING CONDITION

1. Warning systems ON indicator: ON
2. Vehicle speed: approximately 70 km/h (45 MPH) or more
3. Turn indicator signal: After 2 seconds or more from turned OFF

Note. When the LDW system setting on the vehicle information display is ON. After the operating conditions of warning are satisfied, the warning continues until the vehicle speed reaches approximately 60 km/h (40 MPH) The LDW system may not function properly, depending on the situation. Refer to " PRECAUTIONS FOR LANE DEPARTURE WARNING "

Bulb Check Action and Fail-safe Indication

Vehicle condition/Driver's operation Warning systems ON indicator Indication on the combination meter Ignition switch OFF <--> ON (Bulb check) Approx. 5 sec. ON ON: Operational Blinking: LDW detected When DTC is detected (Except "U1308") ON Camera aiming is not completed ("U1308" is detected) NOTE: This is detected while driving the vehicle and the indication remains ON until the ignition switch is turned OFF ON When rear camera needs cleaning OFF Unavailable: Clean Rear Camera Temporary disabled status OFF LDW light (white) will blink When the warning systems switch is pressed (When the settings of LDW system and BSW system on the vehicle information display is "OFF") Blink

Scheme 53

Fail-safe (ITS Control Unit)

If a malfunction occurs in each system, ITS control unit cancels each control, and turns ON the warning lamp or indicator lamp.

BSW/LDW TEMPORARY DISABLED STATUS

Under the following condition, the BSW and/or LDW system is turned off temporarily, the BSW light (white) and/or LDW light (white) will blink, and either of the following messages will appear in the vehicle information display

1. "trunk is open"
2. "washer fluid is low"

When the above condition no longer exists, the BSW and/or LDW system will resume automatically.

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DISPLAY AND WARNING

Vehicle condition/Driver's operation Action Warning systems ON indicator Indication on the combination meter Buzzer Less than Approx. 60 km/h (40 MPH) Close to lane marker No action ON White - Approx. 70 km/h (45 MPH) or more Close to lane marker Warning Buzzer sounds Warning lamp blinks (orange) ON Short continuous beeps Close to lane marker Turn signal ON (Deviate side) No action ON White

Note. After the operating conditions of warning are satisfied, the warning continues until the vehicle speed reaches approximately 60 km/h (40 MPH). Refer to " SYSTEM DESCRIPTION ".

REAR VIEW CAMERA HANDLING

The rear camera unit "1" for the LDW/BSW systems is located above the rear license plate.

To keep the proper operation of the LDW systems and prevent a system malfunction, be sure to observe the following

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1. Always keep the camera lens clean. Be careful not to damage the nozzle of the automatic washer and blower.
2. Do not attach "license plate accessories" that reflect light.
3. Do not strike or damage the areas around the camera unit.

LANE DEPARTURE WARNING (LDW)

1. LDW system is only a warning device to inform the driver of a potential 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.
2. The camera unit may not detect properly under the following conditions: When towing a trailer. When strong light enters the camera unit. (For example, 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.)
3. Automatic washer and blower may not be able to secure detection capability when excessive dirt accumulates on the camera lens.
4. Excessive noise (e.g. audio system volume, open vehicle window) will interfere with the chime sound, and it may not be heard.
5. The camera unit may not be able to detect properly under the following conditions: On roads where there are multiple parallel lane markers; 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 system 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 the road surface is very dark due to scarce ambient light or impaired tail lamp.
6. When driving on a curved road, warning will be late on the outside of the curve due to the nature of the system.

DATA MONITOR

WORK SUPPORT

BSW ON INDICATOR

CONFIGURATION

The specifications of the vehicle can be written and read in the ITS control unit when replaced.

PHYSICAL VALUES

Terminal No. (Wire color) Description Condition Value (Approx.) + - Signal name Input/Output 1 (BR) Ground Washer level switch Input Ignition switch ON When washer fluid is low (switch closed) 0 V When washer fluid is not low (switch open) 12 V 2 (Y) Ground Washer signal pump to camera Input Ignition switch ON 5 V 3 (LG) Ground Washer signal camera to pump Output Ignition switch ON 5 V 7 (P) Ground CAN-L - - - - 17 (G) Ground SOW LED signal R Output While driving LDW/BSW detected 12 V LDW/BSW is not detected 0 V 20 (G) Ground Battery supply Input - - 12 V 22 (BR) Ground Serial ground Output - - 0 V 27 (L) Ground CAN-H - - - - 28 (R) Ground Reverse Input Ignition switch ON Shift selector in R (reverse) 12 V Shift selector not in R (reverse) 0 V 32 (P) Ground Cancel SW output Input Ignition switch ON Cancel switch pressed 0 V Cancel switch not pressed 12 V 33 (BG) Ground LED input Output Ignition switch ON Warning system is ON 12 V Warning system is OFF 0 V 37 (W) Ground SOW LED signal L Output While driving LDW/BSW detected 12 V LDW/BSW is not detected 0 V 39 (BG) Ground Ignition power supply Input Ignition switch ON Battery Voltage 40 (B) Ground Ground - - - 0 V 50, 53 Ground Shield - - - 0 V 51 (R) Ground RR CAM GND Output Ignition switch ON - 0 V 52 (W) Ground RR CAM ON Output Ignition switch ON 6 V 66 (B) Ground RR CAM COMP + Input Ignition switch ON 68 (G) Ground RR CAM CONT Input Ignition switch ON 5 V 69 (B) Ground RR CAM COMP + Input Ignition switch ON

Scheme 57

Fail-safe

If a malfunction occurs in each system, ITS control unit cancels each control, sounds a beep, and turns ON the warning lamp or indicator lamp.

DETAILED FLOW

1. INTERVIEW FOR MALFUNCTION Interview the customer to obtain information about symptoms using "Diagnostic Work Sheet". (Refer to " «DIAGNOSTIC WORK SHEET»(ref-576067-S36355502052013090900000) ".) >> GO TO 2.
2. SELF-DIAGNOSIS WITH CONSULT Perform "All DTC Reading" with CONSULT. Check if the DTC is detected on the self-diagnosis results of "AVM". Is any DTC detected? YES >> GO TO 5 . NO >> GO TO 3.
3. PRE-INSPECTION FOR DIAGNOSIS Perform pre-inspection for diagnosis. Refer to " «INSPECTION PROCEDURE»(ref-576067-S10727478072013090900000) ". >> GO TO 4.
4. ACTION TEST Perform LDW system action test to check the operation status. Refer to " «DESCRIPTION»(ref-576064-S24156106802013090900000) ". >> GO TO 6 .
5. TROUBLE DIAGNOSIS BY DTC Perform trouble diagnosis for the detected DTC. Specify a malfunctioning part. Refer to " «DTC INDEX»(ref-576064-S14761827702013090900000) " (ITS CONTROL UNIT). >> GO TO 7 .
6. SYMPTOM DIAGNOSIS Perform symptom diagnosis. Specify malfunctioning part. Refer to " «SYMPTOM TABLE»(ref-576065-S26801262152013090900000) ". >> GO TO 7.
7. MALFUNCTION PART REPAIR Repair or replace the identified malfunctioning parts. >> GO TO 8.
8. REPAIR CHECK (SELF-DIAGNOSIS WITH CONSULT) Perform self-diagnosis with CONSULT. Check that any DTC is not detected. Erase DTC if DTC is detected before the repair. Check that DTC is not detected again. Is any DTC detected? YES >> GO TO 5 . NO >> GO TO 9.
9. REPAIR CHECK (ACTION TEST) Perform LDW system action test. Also check the system operation. Does it operate normally? YES >> Inspection End. NO >> GO TO 4 .

Work Procedure

1. CAMERA AIMING ADJUSTMENT Perform the camera aiming adjustment with CONSULT. Refer to " «DESCRIPTION»(ref-576067-S19329758042013090900000) ". >> GO TO 2.
2. PERFORM SELF-DIAGNOSIS Perform the self-diagnosis of rear view camera with CONSULT. Check if any DTC is detected. Is any DTC detected? YES >> Perform the trouble diagnosis for the detected DTC. Refer to " «DTC INDEX»(ref-576065-S16768496962013090900000) ". NO >> GO TO 3.
3. LDW/BSW SYSTEM ACTION TEST Perform the LDW/BSW system action test. Refer to " «DESCRIPTION»(ref-576065-S06015501622013090900000) ". Check that the LDW/BSW system operates normally. Is the inspection result normal? YES >> Inspection End. NO >> GO TO 4.
4. LDW/BSW ACTIVE TEST Perform WASH ACTIVE on Active Test using CONSULT. Perform air and washer tube connection check by AIR & WASH ACTIVE on Active Test: Washer fluid output count on the rear view camera is 3 to 5 times --> OK Washer fluid output count on the rear view camera is 10 times --> Check tube with yellow marking Washer fluid output count on the rear view camera is 1 time --> Check tube with green marking No washer fluid output --> Check tube with blue marking or check valve >> Inspection End.

Work Procedure (Target Setting)

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1. TARGET SETTING Side distance (Sd): "B"-"E" ("D"-"F"): 2125 mm (83.66 in) Left distance (Ld): "Ct"-"Lt": 1500 mm (59.06 in) Right distance (Rd): "Ct"-"Rt": 1500 mm (59.06 in) Mark points "A", "B", "C" and "D" at the center of the lateral surface 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. 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. Mark point "E" on the line "LH" at the positions 2125 mm (83.66 in) from point "B". Draw line "RH" passing through points "C" and "D" on the right side of vehicle in the same way as step 2 . Mark point "F" on the line "RH" at the positions 2125 mm (83.66 in) from point "D". 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 both left and right sides from vehicle center. Mark point "Ct" at the center of point "E" and "F" on the line "RW". CAUTION: Make sure that "E" to "Ct" is equal to "F" to "Ct". Mark point "Lt" and "Rt" on the line "RW" at the positions 1500 mm (59.06 in) from point "Ct". Position the center of the target mark to point of "Ct". CAUTION: Make sure that the black/white pattern of the center target is rotated as compared with the left and right targets. >> Go to " «WORK PROCEDURE (REAR VIEW CAMERA CALIBRATION)»(ref-576067-S37499844152013090900000) ".

CAN COMMUNICATION

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern vehicle is equipped with many electronic control units, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads the required data only.

CAN communication signal chart. Refer to " CAN COMMUNICATION SYSTEM: CAN COMMUNICATION SIGNAL CHART ".

ITS COMMUNICATION

1. ITS communication is a multiplex communication system. This enables the system to transmit and receive large quantities of data at high speed by connecting control units with 2 communication lines.
2. ITS communication lines adopt twisted-pair line style (two lines twisted) for noise immunity.

Component Function Check

1. CHECK WARNING SYSTEMS SWITCH INPUT SIGNAL Turn the ignition switch ON. Select the DATA MONITOR item "ITS SW 1" of "AVM" with CONSULT. With operating the warning systems switch, check the monitor status. Monitor item Condition Monitor status ITS SW 1 Warning systems switch is pressed On Warning systems switch is not pressed OFF Is the inspection result normal? YES >> Warning systems switch circuit is normal. NO >> Refer to " «DIAGNOSIS PROCEDURE»(ref-576065-S00431255502013090900000) ".

1. CHECK WARNING SYSTEMS ON INDICATOR Turn the ignition switch ON. Select the active test item "BSW ON INDICATOR" of "AVM" with CONSULT. With operating the test item, check the operation. On: Warning systems ON indicator illuminates Off: Warning systems ON indicator is turned OFF Is the inspection result normal? YES >> Inspection End. NO >> Refer to " «DIAGNOSIS PROCEDURE»(ref-576065-S31408578782013090900000) ".

1. CHECK WARNING BUZZER Turn the ignition switch ON. Select the active test item "BUZZER" of "BCM" with CONSULT. With operating the test item, check the operation. On: Warning buzzer is activated. Off: Warning buzzer is not activated. Is the inspection result normal? YES >> Inspection End. NO >> Refer to " «DIAGNOSIS PROCEDURE»(ref-576065-S13915898322013090900000) ".

PRECAUTIONS FOR LANE DEPARTURE WARNING (LDW)

1. LDW system is only a warning device to inform the driver of a potential 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.
2. LDW system will not operate at speeds below approximately 70 km/h (45 MPH) or if it cannot detect lane markers.
3. Excessive noise will interfere with the warning chime sound, and the chime may not be heard.
4. LDW system may not function properly under the following conditions: On roads where there are multiple parallel lane markers; 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 system 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 sticks to the windshield in front of the lane camera unit. When a sudden change in brightness occurs. (For example, when the vehicle enters or exits a tunnel or under a bridge.)

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1. Remove the trunk lid finisher. Refer to " «TRUNK LID FINISHER: REMOVAL AND INSTALLATION»(ref-576023-S21984453652013090900000) ".
2. Disconnect the harness connector from the rear view camera washer control unit.
3. Remove the rear view camera washer control unit nuts (A).
4. Remove the rear view camera washer control unit (1).