WCS
THE SEAT BELT WARNING CONTINUES SOUNDING, OR DOES NOT SOUND
WCS-33
< SYMPTOM DIAGNOSIS >
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THE SEAT BELT WARNING CONTIN UES SOUNDING, OR DOES NOT
SOUND
DescriptionINFOID:0000000009462908
• Seat belt warning does not sound even though driver seat belt is not fastened.
• Seat belt warning sounds even though driver seat belt is fastened.
Diagnosis ProcedureINFOID:0000000009462909
1.CHECK WARNING CHIME OPERATION
1. Select BUZZER of BCM on CONSULT.
2. Perform SEAT BELT WARN TEST of ACTIVE TEST.
Is the inspection result normal?
YES >> GO TO 2
NO >> Replace combination meter. Refer to MWI-82, "Removal and Installation"
.
2. CHECK SEAT BELT WARNING LAMP
1. Turn ignition switch ON.
2. Check the operation of the seat belt warning lamp in the combination meter.
Is the inspection result normal?
YES >> Replace BCM. Refer to BCS-80, "Removal and Installation".
NO >> GO TO 3
3. CHECK SEAT BELT BUCKLE SWITCH CIRCUIT
Perform inspection of the seat belt buckle sw itch LH (driver seat) circuit. Refer to WCS-28,
"Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4. CHECK SEAT BELT BUCKLE SWITCH UNIT
Perform a unit inspection for the seat belt buckle switch. Refer to WCS-29, "Component Inspection"
.
Is the inspection result normal?
YES >> Replace the combination meter. Refer to MWI-82, "Removal and Installation".
NO >> Replace the seat belt buckle switch LH (driver seat). Refer to SR-30, "Removal and Installation"
.
Seat belt fastened : OFF
Seat belt not fastened : ON
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
WT-2
C1720, C1721, C1722, C1723 TRANSMITTER ...
37
DTC Logic ............................................................ ...37
Diagnosis Procedure ..............................................37
C1724, C1725, C1726, C1727 TRANSMITTER
(BATT VOLT) .................................................. ...
39
DTC Logic ............................................................ ...39
Diagnosis Procedure ..............................................39
C1729 VEHICLE SPEED SIGNAL ....................41
DTC Logic ............................................................ ...41
Diagnosis Procedure ..............................................41
C1730, C1731, C1732, C1733 FLAT TIRE ........42
DTC Logic ............................................................ ...42
Diagnosis Procedure ..............................................42
C1734 BCM ........................................................44
DTC Logic ............................................................ ...44
Diagnosis Procedure ..............................................44
C1735 IGNITION SIGNAL .................................46
DTC Logic ............................................................ ...46
Diagnosis Procedure ..............................................46
SYMPTOM DIAGNOSIS .............................48
TPMS .............................................................. ...48
Symptom Table ................................................... ...48
LOW TIRE PRESSURE WARNING LAMP
DOES NOT TURN ON .................................... ...
49
Low Tire Pressure Warning Lamp Does Not Come
On When Ignition Switch Is Turned On ............... ...
49
LOW TIRE PRESSURE WARNING LAMP
STAYS ON ...................................................... ...
50
Low Tire Pressure Warning Lamp Stays On When
Ignition Switch Is Turned On ................................ ...
50
EASY FILL TIRE ALERT DOES NOT ACTI-
VATE ............................................................... ...
51
Description ........................................................... ...51
Diagnosis Procedure ...............................................51
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ......................... ...
52
NVH Troubleshooting Chart ....................................52
PERIODIC MAINTENANCE .......................53
ROAD WHEEL ................................................ ...53
Inspection ............................................................. ...53
REMOVAL AND INSTALLATION ..............54
REMOTE KEYLESS ENTRY RECEIVER ...... ...54
Removal and Installation .........................................54
ROAD WHEEL TIRE ASSEMBLY ................. ...55
Adjustment ........................................................... ...55
UNIT REMOVAL AND INSTALLATION ....57
TIRE PRESSURE SENSOR ........................... ...57
Exploded View ..................................................... ...57
Removal and Installation .........................................57
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... ...........................................
60
SERVICE DATA AND SPECIFICATIONS
(SDS) .............................................................. ...
60
Road Wheel ......................................................... ...60
Tire ..........................................................................60
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
PRECAUTIONSWT-3
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000009951708
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. Information necessary to service t he system safely is included in the SR and SB section of
this Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, 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 in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric 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 mi nutes before performing any service.
Service Notice and Precautions for TPMSINFOID:0000000009464472
WARNING:
Radio waves could adversely affect electrical medi cal equipment. Those who use a pacemaker should
contact the electrical medical equipment manu facturer for possible influences before use.
• Low tire pressure warning lamp blinks for 1 minute, then turns ON when any malfunction occurs except low
tire pressure. Erase the self-diagnosis memories for Tire Pressure Monitoring System (TPMS), or register
the ID to turn low tire pressure warning lamp OFF. For ID registration, refer to WT-25, "Work Procedure"
.
• ID registration is required when replacing or rotating wheels, replacing tire pressure sensor or BCM. Refer to WT-25, "Work Procedure"
.
• For easy fill tire alert function, refer to the following. WT-9, "Easy Fill Tire Alert Function"
- When inflating the tires, park the vehicle in the safe area and ensure the safety of the working area.
- Read and understand the easy fill tire alert function prior to use.
- Inflate the tires one at a time.
- If there is no response for approximately 15 seconds or mo re after inflating the tires, cancel the use of the
easy fill tire alert function or move the vehicle approximately 1 m (3.2 ft) backward or forward to try again.
The air filler pressure may be weak or out of service area.
- Despite the high-precision TPMS pressure sensor, an i ndicated value may differ from that of the pressure
gauge.
- Air pressure is measured rather high due to the rise in tire air temperature after driving.
- If TPMS is malfunctioning, the easy fill tire alert is unusable.
• Replace grommet seal, valve core and valve cap of tire pressure sensor in TPMS when replacing each tire
by reaching the wear limit. Refer to WT-57, "Exploded View"
.
• Because the tire pressure sensor conforms to No rth America radio law, the following items must be
observed.
- The sensor may be used only in North America.
- It may not be used in any method other than the specified method.
- It must not be disassembled or modified.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
COMPONENT PARTSWT-7
< SYSTEM DESCRIPTION >
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TransmitterINFOID:0000000009464479
A sensor-transmitter integrated with a valve is instal led in each wheel, and transmits a detected air pressure
signal in the form of a radio wave. The radio signal is received by the remote keyless entry receiver.
Remote Keyless Entry ReceiverINFOID:0000000009464480
The remote keyless entry receiver receives the air pressure signal transmitted by the transmitter in each
wheel.
Outside Key AntennasINFOID:0000000009464481
For vehicles equipped with individual tire pressure display in the combination meter, the outside key antennas
(driver side, passenger side and rear bumper) are used by the BCM to identify the location of the transmitters.
Combination MeterINFOID:0000000009464482
The combination meter receives tire pressure status from the BCM via CAN communication. The combination
meter will display the low tire pressure warning lamp when a low tire pressure or system malfunction is
detected by the BCM. A warning message will also be displayed in the vehicle information display. Refer to the
Owner’s Manual for additional information.
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SYSTEMWT-9
< SYSTEM DESCRIPTION >
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System DescriptionINFOID:0000000009464484
When the vehicle has reached a speed of 40 km/h (25 MPH) or greater, the BCM receives a signal transmitted
from the tire pressure sensors/transmitters installed in each wheel. If the BCM detects low inflation pressure or
a system malfunction, it sends a signal to the combi nation meter via CAN communication to illuminate the low
tire pressure warning lamp. In addition, a warning message will be displayed in the vehicle information display.
Refer to the Owner’s Manual for additional information.
The tire pressure monitoring system (TPMS) has Easy fill ti re alert function to aid in tire inflation. Refer to WT-
9, "Easy Fill Tire Alert Function".
Low Tire Pressure Warning Lamp and Display Indications
Easy Fill Tire Alert FunctionINFOID:0000000009464485
NOTE:
When beginning tire inflation, it takes a few seconds for t he Easy fill tire alert to function. If there is no
response for approximately 15 seconds or more, cancel t he Easy fill tire alert function and move the vehicle
approximately 1 m (3.2 ft) backward or forward to try again.
• The Easy fill tire alert function operates only when t he select lever position is in P-range with the ignition
switch ON.
• This function informs the driver with a visual and audible indication that the recommended COLD tire pres-
sure has been reached.
• The hazard warning lamps blink when the recommended COLD tire pressure has been reached. After the recommended COLD tire
pressure has been reached, the horn sounds once and the hazard
warning lamps stop blinking.
• If the tire pressure value is equal to or greater than 30 kPa (0.31
kg/cm
2, 4 psi) more than the recommended COLD tire pressure,
the hazard warning lamps flash and horn sounds three times.
• To return the tire to the recommended COLD tire pressure, deflate
the tire until the horn sounds once and the hazard warning lamps
stop blinking.
Condition Low tire pressure warning lamp Vehicle information display
Ignition switch OFF OFF OFF
Ignition switch ON
(system normal) ON for 1 second then turns off No TPMS message
Low tire pressure ON "Tire Pressure Low - Add Air"
TPMS malfunction Blinks for 1 minute th en stays ON "TPMS ERROR SEE OWNERS MANUAL"
JSEIA0214GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
WT-10
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)INFOID:0000000009955585
CAUTION:
After disconnecting the CONSULT vehicle interface (VI) from the data link connector, the ignition must
be cycled OFF → ON (for at least 5 seconds) → OFF. If this step is not performed, the BCM may not go
to ”sleep mode”, potentially causing a di scharged battery and a no-start condition.
APPLICATION ITEM
CONSULT performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions.
Direct Diagnostic Mode Description
Ecu Identification The BCM part number is displayed.
Self Diagnostic Result The BCM self diagnostic results are displayed.
Data Monitor The BCM input/output data is displayed in real time.
Active Test The BCM activates outputs to test components.
Work support The settings for BCM functions can be changed.
Configuration • The vehicle specification can be read and saved.
• The vehicle specification can be written when replacing BCM.
CAN Diag Support Mntr The result of transmit/receive diagnosis of CAN communication is displayed.
System Sub System Direct Diagnostic Mode
Ecu Identification
Self Diagnostic Result
Data Monitor
Active Test
Work support
Configuration
CAN Diag Su pport Mntr
Door lock DOOR LOCK ××××
Rear window defogger REAR DEFOGGER ×××
Warning chime BUZZER ××
Interior room lamp timer INT LAMP ×××
Remote keyless entry system MULTI REMOTE ENT ×××
Exterior lamp HEADLAMP ×××
Wiper and washer WIPER ×××
Turn signal and hazard warning lamps FLASHER ××
Air conditioner AIR CONDITIONER ×
Intelligent Key system INTELLIGENT KEY ××××
Combination switch COMB SW ×
BCM BCM × × ×××
Immobilizer IMMU ×××
Interior room lamp battery saver BATTERY SAVER ××
Trunk open TRUNK ×
Vehicle security system THEFT ALM ×××
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
DIAGNOSIS SYSTEM (BCM)WT-11
< SYSTEM DESCRIPTION >
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O PAIR PRESSURE MONITOR
AIR PRESSURE MONITOR : CONSULT Fu nction (BCM-AIR PRESSURE MONITOR)
INFOID:0000000009955586
CAUTION:
After disconnecting the CONSULT vehicle interface (VI) from the data link connector, the ignition must
be cycled OFF → ON (for at least 5 seconds) → OFF. If this step is not performed, the BCM may not go
to ”sleep mode”, potentiall y causing a discharged battery and a no-start condition.
NOTE:
The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II
User Guide for additional information.
• Activate and display TPMS transmitter IDs
• Display tire pressure repor ted by the TPMS transmitter
• Read TPMS DTCs
• Register TPMS transmitter IDs
SELF DIAGNOSTIC RESULT
NOTE:
Before performing Self Diagnostic Result, be sure to regi ster the transmitter ID or the actual malfunction may
be different from that displayed on CONSULT.
Refer to BCS-52, "DTC Index"
.
DATA MONITOR
ACTIVE TEST
RAP system RETAINED PWR ×
Signal buffer system SIGNAL BUFFER ×
TPMS AIR PRESSURE MONITOR ××××
System Sub System
Direct Diagnostic Mode
Ecu Identification
Self Diagnostic Result
Data Monitor
Active Test
Work support
Configuration
CAN Diag Support Mntr
Monitor Item [Unit] Description
AIR PRESS FL [kPa, kg/cm
2 or Psi] Indicates air pressure of front LH tire.
AIR PRESS FR [kPa, kg/cm
2 or Psi] Indicates air pressure of front RH tire.
AIR PRESS RR [kPa, kg/cm
2 or Psi] Indicates air pressure of rear RH tire.
AIR PRESS RL [kPa, kg/cm
2 or Psi] Indicates air pressure of rear LH tire.
ID REGST FL1 [Done/Yet] Indicates ID registration status of front LH transmitter.
ID REGST FR1 [Done/Yet] Indicates ID registration status of front RH transmitter.
ID REGST RR1 [Done/Yet] Indicates ID registration status of rear RH transmitter.
ID REGST RL1 [Done/Yet] Indicates ID registration status of rear LH transmitter.
WARNING LAMP [Off/On] Indicates condition of low tire pressure warning lamp in combination meter.
BUZZER [Off/On] Indicates condition of buzzer in combination meter.
Test Item Description
FLASHER This test is able to check turn signal lamp operation [Off/LH/RH].
HORN This test is able to check horn operation [On].
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
WT-12
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM)
WORK SUPPORT
WARNING LAMP This test is able to check tire pressure warning lamp operation [On/Off].
ID REGIST WARNING This test is able to check ID regist warning chime operation [On/Off]. Test Item Description
Support Item Description
ID READ The registered ID number is displayed.
ID REGIST Refer to WT-25, "Description"
.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM