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.
| WARNING | To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer. Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see SRS AIRBAG article. Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Information. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. |
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
| WARNING | When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing serious injury. When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the battery and wait at least 3 minutes before performing any service. |
Input Signal Item
| Transmit unit | Signal name | Description |
|---|
| ECM | CAN communication | Engine speed signal | Receives engine speed |
| TCM | CAN communication | Input speed signal | Receives the number of revolutions of input shaft |
| Current gear position signal | Receives a current gear position |
| Shift position signal | Receives a shift selector position |
| Output shaft revolution signal | Receives the number of revolutions of output shaft |
| ABS actuator and electric unit (control unit) | CAN communication | Vehicle speed signal (ABS) | Receives wheel speeds of four wheels |
| Yaw rate signal | Receives yaw rate acting on the vehicle |
| Combination meter | CAN communication | Parking brake switch signal | Receives an operational state of the parking brake |
| BCM | CAN communication | Front wiper request signal | Receives an operational state of front wiper(s) |
| Turn indicator signal | Receives an operational state of the turn signal lamp and the hazard lamp |
| Dimmer signal | Receives ON/OFF state of dimmer signal |
| Steering angle sensor | CAN communication | Steering angle sensor malfunction signal | Receives a malfunction state of steering angle sensor |
| Steering angle sensor signal | Receives the number of revolutions, turning direction of the steering wheel |
| Steering angle speed signal | Receives the turning angle speed of the steering wheel |
| AV control unit | CAN communication | System selection signal | Receives a selection state of each item in "Driver Assistance" selected with the navigation system |
| Warning systems switch | Warning systems switch signal | Receives an ON/OFF state of the warning systems switch |
Output Signal Item
| Reception unit | Signal name | Description |
|---|
| Combination meter | CAN communication | Meter display signal | Own vehicle indicator signal | Transmits a signal to display a state of the system on the information display |
| Blind Spot Warning indicator | Transmits a Blind Spot Warning signal to turn ON the Blind Spot Warning indicator |
| Lane Departure Warning lamp signal | Transmits a Lane Departure Warning signal to turn ON the Lane Departure Warning indicator |
| Buzzer output signal | Transmits a buzzer output signal to turn ON the buzzer of the following systems: Moving Object Detection (MOD) Blind Spot Warning (BSW) Lane Departure Warning (LDW) |
| Warning buzzer | Warning buzzer signal | Activates the warning buzzer of the following systems: Moving Object Detection (MOD) Blind Spot Warning (BSW) Lane Departure Warning (LDW) |
| Warning systems ON indicator | Warning systems ON indicator signal | Turns ON the warning systems ON indicator |
Fail-safe (ITS Control Unit)
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.
| System | Buzzer | Warning lamp/Indicator lamp | Description |
|---|
| Lane Departure Warning (LDW) | Low-pitched tone | Lane Departure Warning lamp | Cancel |
| Blind Spot Warning (BSW) | High-pitched tone | Blind Spot Warning lamp | Cancel |
| Moving Object Detection (MOD) | Low-pitched tone | Warning lamp MOD icon (on camera screen) | Cancel |
DATA MONITOR
| 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 actuator 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 |
| ILL [On/Off] | Indicates [On/Off] status of the illumination signal |
| ITS SW 1 [On/Off] | Indicates the state of the warning system switch as seen by the ITS control unit |
| ITS SW 1 IND [On/Off] | Indicates the state of the warning system switch indicator output |
| TURN SIGNAL [Left/N/Right] | Indicates [Left/N/Right] status of the turn signal output |
| Rear Camera Image Output signal [OK/NG] | Indicates the input state of video image from rear camera |
| ITS SW_2 [ON/OFF/No setting] | Indicates the state of the warning system secondary switch as seen by the ITS control unit |
| ITS SW_2 IND [ON/OFF/No setting] | Indicates the state of the warning system secondary switch indicator output |
WORK SUPPORT
| Work support items | Description |
|---|
| PREDICTIVE COURSE LINE DISPLAY | Setting whether predictive guide line displays or not |
| INITIALIZE CAMERA IMAGE CALIBRATION | Start the initialization process of the rear camera |
| STEERING ANGLE SENSOR ADJUSTMENT | Execute register neutral point of steering angle sensor |
| CALIBRATING CAMERA IMAGE (REAR CAMERA) | Displays the various values of the rear camera during the calibration process |
| REAR WIDE-VIEW FIXED GUIDE LINE CORRECTION | Adjustment the position of fixed guide line on rear wide view |
| REAR CAMERA ITS | Displays and sets camera image calibration values |
| CAUSE OF LDW CANCEL | Displays the information about reason of LDW cancellation |
| CAUSE OF BSW CANCEL | Displays the information about reason of BSW cancellation |
BSW ON INDICATOR
| Test item | Operation | Description | Blind Spot Warning ON indicator lamp (Yellow) |
|---|
| BSW ON INDICATOR | Off | Stops transmitting the Blind Spot Warning ON indicator signal below to end the test | Off |
| On | Transmits the Blind Spot Warning ON indicator signal to the warning lamp on the door | ON |
| Washer | Off | Stops transmitting activate signal to washer below to end the test | Off |
| On | Transmits activate signal to washer | ON |
| Air pump | Off | Stops transmitting activate signal to air pump below to end the test | Off |
| On | Transmits activate signal to air pump | ON |
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 24
Scheme 24: PHYSICAL VALUES
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.
| System | Buzzer | Warning Indicator lamp | Description |
|---|
| Lane Departure Warning (LDW) | Low-pitched tone | Lane Departure Warning lamp | Cancel |
| Blind Spot Warning (BSW) | High-pitched tone | Blind Spot Warning lamp | Cancel |
| Moving Object Detection (MOD) | Low-pitched tone | Warning lamp MOD icon (on camera screen) | Cancel |
DETAILED FLOW
- INTERVIEW FOR MALFUNCTION Interview the customer to obtain information about symptoms using "Diagnostic Work Sheet". (Refer to " «DIAGNOSTIC WORK SHEET»(ref-576064-S33316650372013090900000) ".) >> GO TO 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.
- PRE-INSPECTION FOR DIAGNOSIS Perform pre-inspection for diagnosis. Refer to " «INSPECTION PROCEDURE»(ref-576064-S15773353942013090900000) ". >> GO TO 4.
- ACTION TEST Perform LDW system action test to check the operation status. Refer to " «DESCRIPTION»(ref-576064-S24156106802013090900000) ". >> GO TO 6 .
- 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 .
- SYMPTOM DIAGNOSIS Perform symptom diagnosis. Specify malfunctioning part. Refer to " «SYMPTOM TABLE»(ref-576065-S26801262152013090900000) ". >> GO TO 7.
- MALFUNCTION PART REPAIR Repair or replace the identified malfunctioning parts. >> GO TO 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.
- 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
- CAMERA AIMING ADJUSTMENT Perform the camera aiming adjustment with CONSULT. Refer to " «DESCRIPTION»(ref-576064-S17561957702013090900000) ". >> GO TO 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-576064-S14761827702013090900000) ". NO >> GO TO 3.
- LDW/BSW SYSTEM ACTION TEST Perform the LDW/BSW system action test. Refer to " «DESCRIPTION»(ref-576064-S24156106802013090900000) ". Check that the LDW/BSW system operates normally. Is the inspection result normal? YES >> Inspection End. NO >> GO TO 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)
| CAUTION | Perform this operation in a horizontal 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 side and upward/downward position from the target. (It is desirable that the vehicle is positioned on a single-color floor.) |
Scheme 25
Scheme 26
Scheme 27
- 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-576064-S11957956492013090900000) ".
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
- 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.
- ITS communication lines adopt twisted-pair line style (two lines twisted) for noise immunity.
Component Function Check
- 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-576064-S36865307422013090900000) ".
- 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-576064-S14032007382013090900000) ".
- 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-576064-S18115446282013090900000) ".
