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. |
Commercial Service Tools
Tool name Description Power Tool Loosening nuts, screws and bolts
Scheme 14
| No. | Component | Function |
|---|---|---|
| 1. | Parking brake switch | Transmits the parking brake switch signal to the combination meter. |
| 2. | 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. |
| 3. | Washer fluid level switch | Transmits the washer fluid level switch signal to the combination meter. Refer to " COMPONENT PARTS LOCATION " for detailed installation location. |
| 4. | Engine oil pressure sensor | Transmits the engine oil pressure sensor signal to the ECM. Refer to " EXPLODED VIEW " for detailed installation location. |
| 5. | TCM | Transmits the shift position signal to the combination meter via CAN communication. Refer to " CVT CONTROL SYSTEM: COMPONENT PARTS LOCATION " for detailed installation location. |
| 6. | ECM | Transmits the following signals to the combination meter via CAN communication. Engine speed signal Engine coolant temperature signal Fuel consumption monitor signal Engine oil pressure sensor signal Refer to " ENGINE CONTROL SYSTEM: COMPONENT PARTS LOCATION " for detailed installation location. |
| 7. | BCM | Transmits the following signals to the combination meter via CAN communication. Door switch signal Buzzer signal 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. |
| 8. | Combination meter | Refer to " METER SYSTEM: COMBINATION METER ". |
| 9. | Fuel level sensor unit and fuel pump (fuel level sensor) | Transmits the fuel level sensor signal to the combination meter. |
METER SYSTEM: Combination Meter
The combination meter controls the following items according to the signals received from each unit via CAN communication and the signals from switches and sensors.
- Measuring instruments
- Indicator lamps
- Warning lamps
- Meter illumination control
- Information display
Scheme 15
Scheme 16
COMBINATION METER INPUT SIGNAL (CAN COMMUNICATION SIGNAL)
| Transmit unit | Signal name |
|---|---|
| ABS actuator and electric unit (control unit) | Vehicle speed signal |
| BCM | Door switch signal |
| Buzzer signal | |
| TCM | Shift position signal |
| ECM | Engine speed signal |
| Engine coolant temperature signal | |
| Engine oil pressure signal | |
| Fuel consumption signal | |
| Loose fuel cap signal |
METER CONTROL FUNCTION LIST
| System | Description | Reference | ||
|---|---|---|---|---|
| Measuring instruments | Speedometer | Indicates vehicle speed. | " SPEEDOMETER: SYSTEM DESCRIPTION " | |
| Tachometer | Indicates engine speed. | " TACHOMETER: SYSTEM DESCRIPTION " | ||
| Shift position indicator | Indicates shift position. | " SHIFT POSITION INDICATOR: SYSTEM DESCRIPTION " | ||
| Warning lamp/indicator lamp | Engine oil pressure warning lamp | The warning lamp turns ON or turns OFF, according to engine hydraulic pressure. | " OIL PRESSURE WARNING LAMP: SYSTEM DESCRIPTION " | |
| Meter illumination control | Meter illumination control function | Controls the back light of combination meter. | " METER ILLUMINATION CONTROL: SYSTEM DESCRIPTION " | |
| Information display | ODO/trip meter | Indicates mileage. | " INFORMATION DISPLAY: SYSTEM DESCRIPTION " | |
| Engine coolant temperature gauge | Indicates engine coolant temperature. | |||
| Fuel gauge | Indicates fuel level. | |||
| Loose fuel cap warning | Indicates loose fuel cap. | |||
| Low fuel warning | Indicates fuel level. | |||
| Trip computer | Instant fuel consumption | Displays current fuel consumption. | ||
| Average fuel consumption | Displays average fuel consumption. | |||
| Distance to empty | Displays distance to empty. | |||
| Travel distance | Displays mileage. | |||
METER SYSTEM: 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 | |||
Scheme 17
ODO/TRIP METER
The combination meter calculates mileage using the vehicle speed signal from the ABS actuator and electric unit (control unit) and displays the mileage on the information display.
ENGINE COOLANT TEMPERATURE GAUGE
The engine coolant temperature gauge indicates the engine coolant temperature.
The ECM provides an engine coolant temperature signal to the combination meter via CAN communication.
FUEL GAUGE
Control Outline
The fuel level sensor unit sends a variable resistor signal to the combination meter. The fuel gauge indicates the approximate fuel level in the fuel tank.
Refuel Control
The unit detects the driver is refueling the vehicle and accelerates the fuel gauge segment movement if the fuel level changes by 9 l (2-3/8 US, 2 lmp gal) or more.
Lighting segment-resistance relationship
Scheme 18
INTERRUPT INDICATION
Low Fuel Warning
The low fuel warning turns ON when the fuel level in the fuel tank reaches approximately 7.8 l (2-1/8 US gal, 1-3/4 Imp gal).
LOOSE FUEL CAP WARNING
The LOOSE FUEL CAP message will display in the information display when the fuel-filler cap is not tightened correctly. The message will turn off as soon as the ECM detects the fuel-filler cap is properly tightened. The ECM provides a loose fuel cap signal to the combination meter via CAN communication lines.
Scheme 19
| Switch name | Operation | Description |
|---|---|---|
| Illumination control switch (1) | Press | An illuminance level of the back light of the combination meter can be adjusted. |
| Meter control switch (2) | The information display screen can be switched. The trip meter can be switched between A and B. Trip meter A/B can be reset by pressing and holding the meter control switch. Time can be adjusted. |
SELF DIAG RESULT
Refer to " DTC INDEX ".
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
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. |
W/L ON HISTORY
- 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.
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 20
Scheme 21
Scheme 22
Scheme 23
Scheme 24
Scheme 25
Scheme 26
Scheme 27
Scheme 28
Scheme 29
Scheme 30
Scheme 31
Scheme 32
Scheme 33
DETAILED FLOW
- CONFIRM SYMPTOM Confirm symptom or customer complaint. : GO TO 2.
- SELF-DIAGNOSIS OF COMBINATION METER Perform self-diagnosis of combination meter. Refer to " «ON BOARD DIAGNOSIS FUNCTION»(ref-675593-S14943789872014120500000) ". Is the inspection result normal? YES: GO TO 3. NO: If self-diagnosis will not start, check power supply and ground circuit of combination meter. Refer to " «COMBINATION METER: DIAGNOSIS PROCEDURE»(ref-675593-S18739808862014120500000) ". If power supply and ground circuits are OK, replace combination meter. Refer to " «REMOVAL AND INSTALLATION»(ref-675593-S12400211822014120500000) ".
- CHECK COMBINATION METER WITH CONSULT Select METER/M & A on CONSULT and perform self-diagnosis of combination meter. Refer to " «CONSULT FUNCTION»(ref-675593-S18638389622014120500000) ". Is the inspection result normal? YES: Check symptom. GO TO 4. NO: Refer to " «DTC INDEX»(ref-675593-S32879487942014120500000) ".
- CHECK SYSTEM OPERATION Check the combination meter to verify that the repair has been completed successfully. Is the inspection result normal? YES: Inspection End. NO: GO TO 1 .
Component Function Check
- COMBINATION METER INPUT SIGNAL Select METER/M & A on CONSULT. Using FUEL METER of DATA MONITOR, compare the DATA MONITOR value with the fuel gauge position. Fuel gauge indication position Reference value of data monitor [L] 1 Approx. 39.8 3/4 Approx. 31.2 1/2 Approx. 20.8 1/4 Approx. 10.8 0 Approx. 2.9 Does monitor value match fuel gauge reading? YES: Inspection End. NO: Replace combination meter. Refer to " «REMOVAL AND INSTALLATION»(ref-675593-S12400211822014120500000) ".