Driver Assistance System (Bsw): Other Infiniti QX50 I

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. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.

Information necessary to service the system safely is included in the " SRS AIRBAG " and " SEAT BELTS " of this Service Information.

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

Precaution for BSW System Service

BSW CONTROL MODULE INPUT/OUTPUT SIGNAL ITEM

BSW control module receives signals via CAN communication. It also detects vehicle conditions that are necessary for BSW control.

Input Signal Item

Output Signal Item

Scheme 61

Scheme 62

1. The BSW system can help alert the driver of other vehicles in adjacent lanes when changing lanes.
2. The BSW system uses side radar installed near the rear bumper to detect vehicles in an adjacent lane.
3. The side radar can detect vehicles on either side of vehicle within the detection zone shown as illustrated.
4. This detection zone starts from the outside mirror of vehicle and extends approximately 10 ft (3.0 m) behind the rear bumper, and approximately 10 ft (3.0 m) sideways.
5. The BSW system operates above approximately 32 km/h (20 MPH).
6. If the side radar detects vehicles in the detection zone, the BSW indicator illuminates.
7. If the driver then activates the turn signal, a buzzer will sound twice and the BSW indicator will blink. NOTE: A buzzer sounds if the side radar have already detected vehicles when the driver activates the turn signal. If a vehicle comes into the detection zone after the driver activates the turn signal, then only the BSW indicator blinks and no buzzer sounds.

BULB CHECK ACTION AND FAIL-SAFE INDICATION

Vehicle condition/Driver's operation BSW indicator Warning systems ON indicator Indication on the combination meter Ignition switch: OFF --> ON Approx. 2 sec. ON Approx. 5 sec. ON (1) When DTC is detected OFF ON When radar blockage is detected OFF ON (1) If BSW initial state is ON, warning systems ON indicator continues turned ON

Scheme 63

Note. The condition is seen regardless BSW system status (ON/OFF).

Scheme 64

Note. Time shown in the figure is approximate time.

BSW INITIAL STATE CHANGE

BSW initial state can be changed.

1. BSW initial ON* - BSW function is automatically turned ON, when the ignition switch OFF --> ON.
2. BSW initial OFF - BSW function is still OFF when the ignition switch OFF --> ON. *: Factory setting

How to change FCW/LDW/BSW initial state

1. Turn ignition switch ON.
2. Switch BSW/FCW/LDW and LDP functions to OFF.
3. Push and hold warning systems switch for more than 4 seconds.
4. Buzzer sounds and blinking of the lane departure warning lamp informs that the BSW/LDW/FCW initial state changes completed.

Fail-safe (BSW Control Module)

If a malfunction occurs in the system, BSW control module cancels the control. Then the BSW warning lamp in the combination meter illuminates.

TEMPORARY DISABLED STATUS AT BLOCKAGE

When the side radar is blocked, the operation is temporarily cancelled. Then BSW warning lamp in combination meter blinks. Also, under the following conditions, the operation may be temporarily cancelled.

1. The side radar may be blocked by temporary ambient conditions such as splashing water, mist or fog.
2. The blocked condition may also be caused by objects such as ice, frost or dirt obstructing the side radar.

Scheme 65

Scheme 66

SIDE RADAR HANDLING

1. Side radar for BSW system is located inside the rear bumper.
2. Always keep the rear bumper near the side radar clean.
3. Do not attach a sticker (including transparent material), install an accessory or paintwork near the side radar.
4. Do not strike or damage the areas around the side radar.
5. Do not strike, damage, and scratch the side radar, especially the vent seal (gray circular) area, under repair.

PRECAUTIONS FOR BLIND SPOT WARNING

1. The BSW system is not a replacement for proper driving procedure and are 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 driver will move to ensure it is safe to change lanes. Never rely solely on the BSW system.
2. The BSW system may not provide a warning for vehicles that pass through the detection zone quickly.
3. Do not use the BSW system when towing a trailer because the system may not function properly.
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 side radar may not be able to detect and activate BSW when certain objects are present such as: Pedestrians, bicycles, animals. Several types of vehicles such as motorcycles. Oncoming vehicles. Vehicles remaining in the detection zone when driver accelerate from a stop. A vehicle merging into an adjacent lane at a speed approximately the same as vehicle. A vehicle approaching rapidly from behind. A vehicle which vehicle overtakes rapidly.
6. Severe weather or road spray conditions may reduce the ability of the side radar to detect other vehicles.
7. The side radar detection zone is designed based on a standard lane width. When driving in a wider lane, the side radar may not detect vehicles in an adjacent lane. When driving in a narrow lane, the side radar may detect vehicles driving two lanes away.
8. The side radar are designed to ignore most stationary objects, however objects such as guardrails, walls, foliage and parked vehicles may occasionally be detected. This is a normal operating condition.

DATA MONITOR

Note. The following table includes information (items) inapplicable to this vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items. SIGNAL B, SIGNAL C are displayed, but not used.

Scheme 67

ICC BUZZER

BSW/BSI WARNING LAMP

FFD (Freeze Frame Data)

The side radar records the following data when the malfunction is detected.

Note. The following table includes information (items) inapplicable to this vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items.

The side radar records the following data when the malfunction is detected.

Note. The following table includes information (items) inapplicable to this vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items.

PHYSICAL VALUES

Fail-safe

If a malfunction occurs in the system, BSW control module cancels the control. Then the BSW warning lamp in the combination meter illuminates.

When the side radar is blocked, the operation is temporarily cancelled. Then BSW warning lamp in combination meter blinks. Also, under the following conditions, the operation may be temporarily cancelled.

1. The side radar may be blocked by temporary ambient conditions such as splashing water, mist or fog.
2. The blocked condition may also be caused by objects such as ice, frost or dirt obstructing the side radar.

When the side radar is blocked, the operation is temporarily cancelled. Then BSW warning lamp in combination meter blinks. Also, under the following conditions, the operation may be temporarily cancelled.

1. The side radar may be blocked by temporary ambient conditions such as splashing water, mist or fog.
2. The blocked condition may also be caused by objects such as ice, frost or dirt obstructing the side radar.

DETAILED FLOW

1. INTERVIEW FOR MALFUNCTION It is also important to clarify the customer concerns before starting the inspection. Interview the customer about the concerns carefully and understand the symptoms fully. NOTE: The customers are not professionals. Never assume that "maybe the customer means..." or "maybe the customer mentioned this symptom". : 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 "SIDE RADAR LEFT/RIGHT" and/or "BSW". 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-617074-S04294799802014052000000) ". : GO TO 4.
4. ACTION TEST Perform BSW system action test to check the operation status. Refer to " «DESCRIPTION»(ref-617074-S28613251662014052000000) ". Check if any other malfunctions occur. : GO TO 6 .
5. TROUBLE DIAGNOSIS BY DTC Check the DTC in the self-diagnosis results. Perform trouble diagnosis for the detected DTC. Refer to " «DTC INDEX»(ref-617074-S12286218592014052000000) " (SIDE RADAR LEFT) or " «DTC INDEX»(ref-617074-S36677082322014052000000) " (SIDE RADAR RIGHT) and/or " «DTC INDEX»(ref-617074-S38376830872014052000000) " (BSW). NOTE: If "DTC: U1000" is detected, first diagnose the CAN communication system or BSW communication system. : GO TO 7 .
6. SYMPTOM DIAGNOSIS Perform the applicable diagnosis according to the diagnosis chart by symptom. Refer to " «SYMPTOM TABLE»(ref-617074-S12408744552014052000000) ". : GO TO 7.
7. MALFUNCTIONING PART REPAIR Repair or replace the identified malfunctioning parts. : GO TO 8.
8. REPAIR CHECK (SELF-DIAGNOSIS WITH CONSULT) Erases self-diagnosis results. Perform "All DTC Reading" again after repairing or replacing the specific items. Check if any DTC is detected in self-diagnosis results of "SIDE RADAR LEFT/RIGHT" and "BSW". Is any DTC detected? YES: GO TO 5 . NO: GO TO 9.
9. REPAIR CHECK (ACTION TEST) Perform the BSW system action test. Check that the malfunction symptom is solved or no other symptoms occur. Is there a malfunction symptom? YES: GO TO 4 . NO: INSPECTION END

Work Procedure

Scheme 68

1. BSW SYSTEM ACTION TEST Drive the vehicle. Turn warning systems switch ON (warning systems ON indicator is ON). Check BSW operation according to the following table. Vehicle condition/Driver's operation Action Warning systems ON indicator Vehicle speed (Approx.) [km/h (MPH)] Turn signal condition Status of vehicle detection within detection area Indication on the BSW indicator Buzzer OFF - - - OFF OFF ON Less than approx. 29 (18) - - OFF OFF Approx. 32 (20) or more - Vehicle is absent OFF OFF OFF Vehicle is detected ON OFF ON (vehicle detected direction) Before turn signal operates Vehicle is detected Blink Short continuous beep Vehicle is detected after turn signal operates Blink OFF NOTE: If vehicle speed exceeds approximately 32 km/h (20 MPH), BSW function operates until the vehicle speed becomes lower than approximately 29 km/h (18 MPH). Time shown in the figure is approximate time. : INSPECTION END

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 SIGNAL CHART ".

BSW COMMUNICATION

1. BSW 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. BSW communication lines adopt twisted-pair line style (two lines twisted) for noise immunity.

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 SIGNAL CHART ".

1. BSW 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. BSW communication lines adopt twisted-pair line style (two lines twisted) for noise immunity.

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 SIGNAL CHART ".

1. BSW 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. BSW communication lines adopt twisted-pair line style (two lines twisted) for noise immunity.

Component Function Check

1. CHECK WARNING SYSTEMS SWITCH SIGNAL BY CONSULT CONSULT DATA MONITOR Turn the ignition switch ON. Select "LDW SW" of "LANE CAMERA" data monitor item. With operating the warning systems switch, check the monitor status. Monitor item Condition Monitor status LDW SW Warning systems switch Pressed <--> Released On <--> Off Is the item status normal? YES: Warning systems switch circuit is normal. NO: Refer to " «DIAGNOSIS PROCEDURE»(ref-617074-S41187273242014052000000) ".

1. CHECK WARNING SYSTEMS ON INDICATOR BY CONSULT CONSULT ACTIVE TEST Turn the ignition switch ON. Select "LDW ON IND" of "LANE CAMERA" active test item. With operating the test item, check the operation. On: Warning systems ON indicator illuminates. Off: Warning systems ON indicator is turned OFF. Does the warning systems ON indicator illuminate? YES: Warning systems ON indicator circuit is normal. NO: Refer to " «DIAGNOSIS PROCEDURE»(ref-617074-S10238191092014052000000) ".

PRECAUTIONS FOR BLIND SPOT WARNING (BSW)

1. The BSW system is not a replacement for proper driving procedure and are 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 driver will move to ensure it is safe to change lanes. Never rely solely on the BSW system.
2. The BSW system may not provide a warning for vehicles that pass through the detection zone quickly.
3. Do not use the BSW system when towing a trailer because the system may not function properly.
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 side radar may not be able to detect and activate BSW when certain objects are present such as: Pedestrians, bicycles, animals. Several types of vehicles such as motorcycles. Oncoming vehicles. Vehicles remaining in the detection zone when driver accelerate from a stop. A vehicle merging into an adjacent lane at a speed approximately the same as vehicle. A vehicle approaching rapidly from behind. A vehicle which vehicle overtakes rapidly.
6. Severe weather or road spray conditions may reduce the ability of the side radar to detect other vehicles.
7. The side radar detection zone is designed based on a standard lane width. When driving in a wider lane, the side radar may not detect vehicles in an adjacent lane. When driving in a narrow lane, the side radar may detect vehicles driving two lanes away.
8. The side radar are designed to ignore most stationary objects, however objects such as guardrails, walls, foliage and parked vehicles may occasionally be detected. This is a normal operating condition.