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 and SEAT BELTS 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 the SRS AIRBAG . 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 three minutes before performing any service. |
Scheme 34
Scheme 34: Component Parts Location
| No. | Component | Function |
|---|
| 1. | Parking brake switch | Transmits the parking brake switch signal to the combination meter. |
| 2. | Key switch | Transmits the key switch signal to the BCM. Refer to " NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS: COMPONENT PARTS LOCATION " (without Intelligent Key) for detailed installation location. |
| 3. | ABS actuator and electric unit (control unit) | Transmits the vehicle speed signal to the combination meter via CAN communication. Refer to " COMPONENT PARTS LOCATION " for detailed installation location. |
| 4. | BCM | Based on the signals received from various units and switches, transmits the buzzer output signal to the combination meter via CAN communication. Refer to " BODY CONTROL SYSTEM: COMPONENT PARTS LOCATION " (with Intelligent Key) or " BODY CONTROL SYSTEM: COMPONENT PARTS LOCATION " (without Intelligent Key) for detailed installation location. |
| 5. | Combination meter | Receives a buzzer output signal from the BCM with CAN communication line and sounds the buzzer. Controls the following with the vehicle speed signal received from ABS actuator and electric unit (control unit) via CAN communication and the signals from switches. Seat belt reminder warning chime Parking brake release warning chime Key warning chime |
| 6. | Seat belt buckle switch LH | Transmits a seat belt buckle switch signal LH to the combination meter. |
Combination Meter
The combination meter has a built-in buzzer (1) and sounds the following warnings, according to signals from each switch and unit.
Scheme 35
Scheme 35: Combination Meter
- Light reminder warning
- Parking brake release warning chime
- Seat belt warning
- Key warning chime
Scheme 36
Scheme 36: SYSTEM DIAGRAM (WITH INTELLIGENT KEY)
Scheme 37
Scheme 37: SYSTEM DIAGRAM (WITHOUT INTELLIGENT KEY)
COMBINATION METER INPUT/OUTPUT SIGNAL (CAN COMMUNICATION SIGNAL)
| Signal name | Transmit unit |
|---|
| Vehicle speed signal | ABS actuator and electric unit (control unit) |
| Buzzer output signal | BCM |
| Signal name | Reception unit |
|---|
| Vehicle speed signal | BCM |
OUTPUT SIGNAL DESCRIPTION
BCM INPUT/OUTPUT SIGNAL (CAN COMMUNICATION SIGNAL)
| Signal name | Transmit unit |
|---|
| Vehicle speed signal | Combination meter |
| Signal name | Reception unit |
|---|
| Buzzer output signal | Combination meter |
OUTPUT SIGNAL DESCRIPTION
WARNING CHIME FUNCTION LIST
| Warning functions | Refer to |
|---|
| Light reminder warning | " LIGHT REMINDER WARNING CHIME: LIGHT REMINDER WARNING " |
| Parking brake release warning chime | " PARKING BRAKE RELEASE WARNING CHIME: PARKING BRAKE RELEASE WARNING CHIME " |
| Seat belt warning | " SEAT BELT REMINDER WARNING CHIME: SEAT BELT WARNING " |
| Key warning chime (without Intelligent Key) | " KEY WARNING CHIME: KEY WARNING CHIME " |
The combination meter activates the fail-safe control if CAN communication with each unit is malfunctioning.
| Function | Specifications |
|---|
| Buzzer | The buzzer turns OFF by suspending communication. |
Scheme 38
Scheme 38: LIGHT REMINDER WARNING CHIME: Light Reminder Warning
WARNING CHIME CANCEL CONDITIONS
Warning is canceled if any of the following conditions is fulfilled.
| Operation conditions |
|---|
| Ignition switch | ON |
| Combination switch (Lighting switch) | OFF or AUTO position |
| Driver side door | Close [front door switch LH OFF] |
SIGNAL PATH
- BCM requires warning chime output to combination meter when it judges light reminder warning chime is necessary from signals below. Signal name Signal source Ignition switch signal - Combination switch signal Combination switch (Lighting switch) BCM Driver door switch signal Front door switch LH BCM
- Combination meter sounds integrated buzzer, following the warning chime output requirement (below signal) from BCM. Signal name Signal source Buzzer output signal BCM Combination meter
Scheme 39
Scheme 39: SYSTEM DIAGRAM
WARNING CANCEL CONDITIONS
Warning is canceled if any of the following conditions are fulfilled.
| Operation conditions |
|---|
| Ignition switch | OFF |
| Parking brake | Release condition (parking brake switch OFF) |
| Vehicle speed | Approximately 1.9 MPH (3 km/h) or less |
Combination meter sounds integrated buzzer when it judges that parking brake release warning chime is necessary from signals below.
| Signal name | Signal source |
|---|
| Ignition switch signal | |
| Parking brake switch signal | Parking brake switch Combination meter |
| Vehicle speed signal | ABS actuator and electric unit (control unit) Combination meter |
Scheme 40
Scheme 40: SYSTEM DIAGRAM
Warning is canceled if any of the following conditions is fulfilled.
| Operation conditions |
|---|
| Ignition switch | OFF |
| Driver seat belt | Fastened (seat belt buckle switch LH OFF) |
| 6 seconds after the start of warning sound |
- BCM requires warning chime output to combination meter when it judges seat belt warning chime is necessary from signals below. Signal name Signal source Ignition switch signal - Seat belt buckle switch signal (LH) Seat belt buckle switch (LH) Combination meter BCM
- Combination meter sounds integrated buzzer, following the warning chime output requirement (below signal) from BCM. Signal name Signal source Buzzer output signal BCM Combination meter
Scheme 41
Scheme 41: SYSTEM DIAGRAM
Warning is canceled if any of the following conditions is fulfilled.
| Operation conditions |
|---|
| Ignition switch | ON |
| Key switch | ON (key is removed from key cylinder) |
| Driver side door | Close [front door switch LH OFF] |
- BCM detects key inserted into the ignition switch, and sends key warning signal to combination meter with CAN communication line. Signal name Signal source Ignition switch signal - Key switch signal Key switch BCM Driver door switch signal Front door switch LH BCM
- Combination meter sounds integrated buzzer, when it receives a buzzer output signal from BCM. Signal name Signal source Buzzer output signal BCM Combination meter
SELF DIAG RESULT
DATA MONITOR
| X: Applicable |
|---|
| Display item [Unit] | MAIN SIGNALS | Description |
| SPEED METER [mph] or [km/h] | X | Displays the value of vehicle speed signal. |
| SPEED OUTPUT [mph] or [km/h] | X | Displays the value of vehicle speed signal, which is transmitted to each unit with CAN communication. |
| ODO OUTPUT [Mi] or [km] | | Displays odometer signal value transmitted to other units via CAN communication. |
| TACHO METER [RPM] | X | Displays the value of engine speed signal, which is input from ECM. |
| FUEL METER [L] | X | Displays the fuel level. |
| W TEMP METER [°F] or [°C] | X | Displays the value of engine coolant temperature signal, which is input from ECM. |
| ABS W/L [ON/OFF] | | Displays [ON/OFF] condition of ABS warning indicator |
| VDC/TCS IND [ON/OFF] | | Displays [ON/OFF] condition of VDC OFF indicator lamp. |
| SLIP IND [ON/OFF] | | Displays [ON/OFF] condition of SLIP indicator lamp. |
| BRAKE W/L [ON/OFF] | | Displays [ON/OFF] condition of brake warning indicator. |
| DOOR W/L [ON/OFF] | | Displays [ON/OFF] condition of door warning indicator. |
| HI-BEAM IND [ON/OFF] | | Displays [ON/OFF] condition of high beam indicator. |
| TURN IND [ON/OFF] | | Displays [ON/OFF] condition of turn indicator. |
| FR FOG IND [ON/OFF] | | Displays [ON/OFF] condition of front fog lamp indicator. |
| LIGHT IND [ON/OFF] | | Displays [ON/OFF] condition of light indicator. |
| OIL W/L [ON/OFF] | | Displays [ON/OFF] condition of engine oil pressure warning indicator. |
| MIL [ON/OFF] | | Displays [ON/OFF] condition of malfunction indicator. |
| CRUISE IND [Off] | | Displays [ON/OFF] condition of CRUISE indicator. |
| O/D OFF IND [ON/OFF] | | Displays [ON/OFF] condition of O/D OFF indicator. |
| FUEL W/L [ON/OFF] | | Displays [ON/OFF] condition of low-fuel warning indicator. |
| AIR PRES W/L [ON/OFF] | | Displays [ON/OFF] condition of tire pressure warning lamp. |
| KEY G/Y W/L [ON/OFF] | | Displays [ON/OFF] condition of Intelligent Key warning lamp. |
| EPS W/L [ON/OFF] | | Displays [ON/OFF] condition of EPS indicator. |
| CHAGE W/L [Off] | | Displays [ON/OFF] condition of charge warning indicator. |
| SHIFT IND [P, R, N, D, L] | | Displays shift selector position. |
| FUEL CAP W/L [Off] | | Displays [ON/OFF] condition of loose fuel cap warning message. |
| O/D OFF SW [ON/OFF] | | Displays [ON/OFF] condition of O/D OFF switch. |
| REAR DEF SW [ON/OFF] | | Displays [ON/OFF] condition of rear window defogger switch. |
| PKB SW [ON/OFF] | | Status of parking brake switch. |
| BUCKLE SW [ON/OFF] | | Status of seat belt buckle switch LH. |
| BRAKE OIL SW [ON/OFF] | | Status of brake fluid level switch. |
| DISTANCE [M] or [Mi] | | Displays distance to empty. |
| FUEL LOW SIG [ON/OFF] | | Displays [ON/OFF] condition of low-fuel warning signal. |
| BUZZER [ON/OFF] | X | Displays [ON/OFF] condition of buzzer. |
| TPMS PRESS L [ON/OFF] | | Displays [ON/OFF] condition of check tire pressure warning message. |
DISPLAY ITEM LIST DESCRIPTION
Note. Some items are not available according to vehicle specification.
WARNING HISTORY
| Display item | Description |
|---|
| W/L ON HISTORY | Lighting history of warning lamp and indicator lamp can be checked. |
- Stores histories when warning/indicator lamp is turned on.
- "W/L ON HISTORY" indicates the "TIME" when the warning/indicator lamp is turned on.
- The "TIME" above is: 0: The condition that the warning/indicator lamp has been turned on 1 or more times after starting the engine and waiting for 30 seconds. 1 - 39: The number of times the engine was restarted after the 0 condition. NO W/L ON HISTORY: Stores NO (0) turning on history of warning/indicator lamp.
Note. W/L ON HISTORY is not stored for approximately 30 seconds after the engine starts. Brake warning lamp does not store any history when the parking brake is applied or the brake fluid level gets low.
| Monitor Item [Unit] | Description |
|---|
| PUSH-SW [On/Off] | Indicates condition of push-button ignition switch. |
| UNLK SEN-DR [On/Off] | Indicates condition of door unlock sensor. |
| VEH SPEED 1 [km/h] | Indicates vehicle speed signal received from ABS on CAN communication line. |
| TAIL LAMP SW [On/Off] | Indicates condition of combination switch. |
| FR FOG SW [On/Off] | Indicates condition of front fog lamp switch. |
| DOOR SW-DR [On/Off] | Indicates condition of front door switch LH. |
| CDL LOCK SW [On/Off] | Indicates condition of lock signal from door lock and unlock switch. |
| Monitor Item [Unit] | Description |
|---|
| IGN ON SW [On/Off] | Indicates condition of ignition switch ON position. |
| KEY ON SW [On/Off] | Indicates condition of key switch. |
| DOOR SW-DR [On/Off] | Indicates condition of front door switch LH. |
| REVERSE SW CAN [On/Off] | Indicates reverse switch signal received from TCM on CAN communication line. |
| TAIL LAMP SW [On/Off] | Indicates condition of combination switch. |
| FR FOG SW [On/Off] | Indicates condition of front fog lamp switch. |
| VEHICLE SPEED [km/h/mph] | Indicates vehicle speed signal received from combination meter on CAN communication line. |
PHYSICAL VALUES
| Terminal No. | Wire color | Item | Condition | Reference value (V) (Approx.) |
|---|
| Ignition switch | Operation or condition |
| 1 | L | CAN-H | | | |
| 2 | P | CAN-L | | | |
| 3 | SB | 2P/R | | | |
| 4 | LG | 8P/R | | | |
| 6 | W | Fuel level sensor signal (+) | | | Refer to " COMPONENT INSPECTION ". |
| 7 | V | Air bag | | | |
| 8 | P | O/D OFF switch | ON | O/D OFF switch pressed | 0 |
| O/D OFF switch released | Battery voltage |
| 9 | V | Seat belt buckle switch LH | ON | Unfastened (ON) | 0 |
| Fastened (OFF) | Battery voltage |
| 10 | SB | Parking Brake switch | ON | Parking brake is inactive | 0 |
| Parking brake is active | Battery voltage |
| 11 | BR | Brake fluid level switch | ON | Brake fluid level low | 0 |
| Brake fluid level normal | Battery voltage |
| 13 | B | Illumination control | | | |
| 15 | R | Ignition switch ON or ACC | | | Battery voltage |
| 17 | V | Washer fluid level switch (Canada models) | ON | Washer fluid level low | 0 |
| Washer fluid level normal | Battery voltage |
| 18 | R/Y | Security | | | |
| 21 | B | Ground | | | 0 |
| 22 | B |
| 23 | B |
| 24 | GR | Fuel level sensor ground (-) | ON | | 0 |
| 27 | R/W | Battery power supply | OFF | | Battery voltage |
| 28 | GR | Ignition switch ON or START | ON | | Battery voltage |
| 29 | G | Seat belt buckle switch RH | ON | Unfastened (ON) | 0 |
| Fastened (OFF) | Battery voltage |
| 38 | Y | Generator | ON | Generator voltage low | 0 |
| Generator voltage normal | Battery voltage |
Fail-safe
The combination meter activates the fail-safe control if CAN communication with each unit is malfunctioning.
| Function | Specifications |
|---|
| Speedometer | Reset to zero by suspending communication. |
| Tachometer |
| Illumination control | When suspending communication, changes to nighttime mode. |
| Shift position indicator | When suspending communication, not indicate. |
| Information display | Trip computer | Current fuel consumption | When reception time of an abnormal signal is 2 seconds or less, the last received datum is used for calculation to indicate the result. When reception time of an abnormal signal is more than two seconds, the last result calculated during normal condition is indicated. |
| Average fuel consumption |
| Distance to empty |
| Engine coolant temperature gauge | Reset to zero by suspending communication. |
| Odo/trip meter | An indicated value is maintained at communications blackout. |
| Buzzer | The buzzer turns OFF by suspending communication. |
| Warning lamp/indicator lamp | ABS warning lamp | The lamp turns ON by suspending communication. |
| Malfunction indicator lamp (MIL) |
| EPS warning lamp |
| Brake warning lamp |
| High beam indicator lamp | The lamp turns OFF by suspending communication. |
| Turn signal indicator lamp |
| Door warning lamp |
| Light indicator lamp |
| Engine oil pressure warning lamp |
| Key warning lamp |
| O/D OFF indicator lamp |
| Shift P warning lamp |
| Engine start operation indicator lamp |
List of ECU Reference
| ECU | Reference |
|---|
| BCM (with Intelligent Key) | " REFERENCE VALUE " |
| " FAIL-SAFE " |
| " DTC INSPECTION PRIORITY CHART " |
| " DTC INDEX " |
| BCM (without Intelligent Key) | " REFERENCE VALUE " |
| " FAIL-SAFE " |
| " DTC INSPECTION PRIORITY CHART " |
| " DTC INDEX " |
Scheme 42
Scheme 42: Wiring Diagram
Scheme 43
Scheme 43: Connector End Views
Scheme 44
Scheme 45
Scheme 46
Scheme 47
Scheme 47: OVERALL SEQUENCE
DETAILED FLOW
- OBTAIN INFORMATION ABOUT SYMPTOM Interview the customer to obtain as much information as possible about the conditions and environment under which the malfunction occurred. : GO TO 2.
- CHECK SYMPTOM Check the symptom based on the information obtained from the customer. Check if any other malfunctions are present. : GO TO 3.
- CHECK CONSULT SELF-DIAGNOSIS RESULTS Connect CONSULT and perform self-diagnosis. Refer to " «DTC INDEX»(ref-675627-S12346542602014120500000) ". When DTC is detected, follow the instructions below: Record DTC and Freeze Frame Data. Are self-diagnosis results normal? YES: GO TO 4. NO: GO TO 5 .
- NARROW DOWN MALFUNCTIONING PARTS BY SYMPTOM DIAGNOSIS Perform symptom diagnosis and narrow down the malfunctioning parts. : GO TO 5.
- REPAIR OR REPLACE MALFUNCTIONING PARTS Repair or replace malfunctioning parts. NOTE: If DTC is displayed, erase DTC after repairing or replacing malfunctioning parts. : GO TO 6.
- FINAL CHECK Check that the warning buzzer in the combination meter operates normally. Does it operate normally? YES: Inspection End. NO: GO TO 1 .
Component Function Check
- CHECK OPERATION OF METER BUZZER Select BUZZER of BCM (BUZZER) on CONSULT. Perform LIGHT WARN ALM of Active Test. Does meter buzzer beep? YES: Inspection End. NO: GO TO 2.
- CHECK COMBINATION METER INPUT SIGNAL Select the DATA MONITOR for the METER/MA and check the BUZZER monitor value. BUZZER Under the condition of buzzer input: On Except above: Off Is the inspection result normal? YES: Replace combination meter. Refer to " «UNIT REMOVAL AND INSTALLATION»(ref-675593-S23113115242014120500000) ". NO: Replace BCM. Refer to " «REMOVAL AND INSTALLATION»(ref-675612-S22326735462014120500000) " (with Intelligent Key) or " «REMOVAL AND INSTALLATION»(ref-675613-S40874896552014120500000) " (without Intelligent Key).
- CHECK COMBINATION METER INPUT SIGNAL Select DATA MONITOR for METER/M & A and check the SEAT BELT W/L monitor value. Monitor Item Condition Status BUCKLE SW When seat belt LH (driver seat) is fastened OFF When seat belt LH (driver seat) is unfastened ON Is the inspection result normal? YES: Inspection End. NO: Refer to " «DIAGNOSIS PROCEDURE»(ref-675627-S08489601652014120500000) ".
- CHECK PARKING BRAKE SWITCH OPERATION Check that brake warning lamp in combination meter turns ON/OFF when parking brake is actuated. Is the inspection result normal? YES: Inspection End. NO: Proceed to diagnosis procedure. Refer to " «DIAGNOSIS PROCEDURE»(ref-675627-S21835647252014120500000) ".
- CHECK BCM INPUT SIGNAL Select Data Monitor for BCM and check the KEY ON SW monitor value. Monitor Item Condition Status KEY ON SW When key is removed from key cylinder OFF When key is inserted into key cylinder ON Is the inspection result normal? YES: Inspection End. NO: Refer to " «DIAGNOSIS PROCEDURE»(ref-675627-S25682588282014120500000) ".
