Nissan Sentra. Instruction — part 917
WCS
COMPONENT PARTS
WCS-5
< SYSTEM DESCRIPTION >
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Component Description
INFOID:0000000009759222
1.
Combination meter
2.
Combination switch (lighting and turn
signal switch)
3.
Key switch (without intelligent key sys-
tem)
4.
Push-button ignition switch (with intel-
ligent key system)
5.
Seat belt buckle switch LH
6.
Front door switch LH
7.
BCM
(view with instrument panel removed)
8.
ABS actuator and electric unit (control
unit)
9.
Parking brake switch
(view with center console removed)
Unit
Description
Combination meter
• Judges whether the parking brake is released using the vehicle speed signal and the parking
brake switch signal, and sounds the buzzer if necessary.
• Receives the seat belt buckle switch signal from the seat belt buckle switch and transmits it to
BCM with CAN communication line.
• Receives a buzzer output signal from BCM with CAN communication line.
Lighting switch
Transmits lighting switch status signal to the BCM.
BCM
Transmits signals provided by various units to the combination meter with CAN communication line.
Front door switch LH
Transmits door switch signal to BCM.
Key switch
Transmits key switch signal to BCM.
Push-button ignition switch
Provides ignition switch status to the BCM
Seat belt buckle switch LH
Transmits seat belt buckle switch LH signal to the combination meter.
Parking brake switch
Transmits parking brake switch signal to the combination meter.
ABS actuator and electric unit
(control unit)
Transmits the vehicle speed signal to combination meter with CAN communication line.
WCS-6
< SYSTEM DESCRIPTION >
SYSTEM
SYSTEM
WARNING CHIME SYSTEM
WARNING CHIME SYSTEM : System Diagram
INFOID:0000000009759223
WARNING CHIME SYSTEM : System Description
INFOID:0000000009759224
DESCRIPTION
• The buzzer for warning chime system is installed in the combination meter.
• The buzzer sounds when the combination meter receives a buzzer output signal from the BCM.
• The BCM receives signals from various units and transmits a buzzer output signal to the combination meter
with CAN communication line if it judges that the warning buzzer should be activated.
LIGHT REMINDER WARNING CHIME
LIGHT REMINDER WARNING CHIME : System Diagram
INFOID:0000000009759225
LIGHT REMINDER WARNING CHIME : System Description
INFOID:0000000009759226
DESCRIPTION
With ignition switch in OFF or ACC position, driver door open, and lighting switch in parking lamp or headlamp
position, the light warning chime will sound.
• BCM detects ignition switch in OFF or ACC position, front door switch LH ON, and lighting switch in parking
lamp or headlamp position, and then transmits buzzer output signal (light reminder warning chime) to combi-
nation meter with CAN communication line.
• When combination meter receives buzzer output signal (light reminder warning chime), it sounds the buzzer.
WARNING OPERATION CONDITIONS
If all of the following conditions are fulfilled
• Lighting switch is in parking lamp or headlamp position
• Ignition switch is in OFF or ACC
• Front door switch LH is ON
AWNIA2651GB
AWNIA2539GB
WCS
SYSTEM
WCS-7
< SYSTEM DESCRIPTION >
C
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WARNING CANCEL CONDITIONS
Warning is canceled if any of the following conditions is fulfilled.
• Lighting switch OFF
• Ignition switch ON
• Front door switch LH is OFF
SEAT BELT WARNING CHIME
SEAT BELT WARNING CHIME : System Diagram
INFOID:0000000009759227
SEAT BELT WARNING CHIME : System Description
INFOID:0000000009759228
DESCRIPTION
With ignition switch turned ON and driver seat belt unfastened, seat belt warning chime will sound for approxi-
mately 6 seconds.
• BCM receives seat belt buckle switch signal from combination meter with CAN communication line.
• BCM detects ignition switch turned ON and seat belt buckle switch LH ON, and then transmits buzzer output
signal (seat belt warning chime) to combination meter with CAN communication line.
• When combination meter receives buzzer output signal (seat belt warning chime), it sounds the buzzer.
WARNING OPERATION CONDITIONS
If all of the following conditions are fulfilled
• Ignition switch OFF
→ON
• Seat belt buckle switch LH is ON (driver seat belt not fastened)
WARNING CANCEL CONDITIONS
Cancels the warning if any of the following conditions is fulfilled.
• Ignition switch OFF
• Seat belt buckle switch LH is OFF (driver seat belt fastened)
KEY WARNING CHIME (WITHOUT INTELLIGENT KEY)
KEY WARNING CHIME (WITHOUT INTELLIGENT KEY) : System Diagram
INFOID:0000000009759229
KEY WARNING CHIME (WITHOUT INTELLIGENT KEY) : System Description
INFOID:0000000009759230
With the key inserted into the key switch, and the ignition switch in the OFF or ACC position, when driver's
door is opened, the warning chime will sound.
AWNIA2652GB
AWNIA2361GB
WCS-8
< SYSTEM DESCRIPTION >
SYSTEM
• BCM detects key inserted into the ignition switch, and sends key warning signal to combination meter with
CAN communication line.
• When combination meter receives key warning signal, it sounds warning chime.
PARKING BRAKE RELEASE WARNING CHIME
PARKING BRAKE RELEASE WARNING CHIME : System Diagram
INFOID:0000000009759231
PARKING BRAKE RELEASE WARNING CHIME : System Description
INFOID:0000000009759232
DESCRIPTION
• The combination meter receives the vehicle speed signal from the ABS actuator and electric unit (control
unit) via CAN communication line.
• The combination meter judges whether the parking brake is released using the parking brake switch signal
from the parking brake switch, and sounds the warning buzzer if necessary.
WARNING OPERATION CONDITIONS
If all of the following conditions are fulfilled:
• Vehicle speed is approximately 7 km/h (4.3 MPH) or higher
• Parking brake switch ON
WARNING CANCEL CONDITIONS
Warning is canceled if any of the following conditions are fulfilled:
• Vehicle speed is approximately 3 km/h (1.9 MPH) or less
• Parking brake switch OFF
AWNIA0263GB
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