Nissan Sentra Service Manual: System

Warning chime system

Warning chime system : system diagram

Warning chime system : system description

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

Light reminder warning chime : system description

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 combination 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

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

Seat belt warning chime : system description

Description

With ignition switch turned on and driver seat belt unfastened, seat belt warning chime will sound for approximately 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 offƒ¸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 buckleSeat belt buckle switch lh is off (driver seat belt fastened)

Key warning chime (without intelligent key)

Key warning chime (without intelligent key) : system diagram

Key warning chime (without intelligent key) : system description

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.

• 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

Parking brake release warning chime : system description

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