Nissan Versa Note. Manual - part 86
BCS
SYSTEM
BCS-81
< SYSTEM DESCRIPTION >
[WITHOUT INTELLIGENT KEY SYSTEM]
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OUTLINE
• BCM incorporates a power saving control function that reduces the power consumption according to the
vehicle status.
• BCM switches the status (control mode) by itself with the power saving control function. It performs the sleep
request to each unit (IPDM E/R and combination meter) that operates with the ignition switch OFF.
Normal mode (wake-up)
- CAN communication is normally performed with other units
- Each control with BCM is operating properly
CAN communication sleep mode (CAN sleep)
- CAN transmission is stopped
- Control with BCM only is operating
Low power consumption mode (BCM sleep)
- Low power consumption control is active
- CAN transmission is stopped
LOW POWER CONSUMPTION CONTROL WITH BCM
BCM reduces the power consumption with the following operation in the low power consumption mode.
• The reading interval of each switch changes from 10 ms interval to 60 ms interval.
SLEEP MODE ACTIVATION
• BCM receives the sleep-ready signal (ready) from IPDM E/R and combination meter via CAN communica-
tion.
• BCM transmits the sleep wake up signal (sleep) to each unit when all of the CAN sleep conditions are ful-
filled.
• Each unit stops the transmission of CAN communication with the sleep wake-up signal. BCM is in CAN com-
munication sleep mode.
• BCM is in the low power consumption mode and performs the low power consumption control when all of the
BCM sleep conditions are fulfilled with CAN sleep condition.
Sleep condition
WAKE-UP OPERATION
• BCM transmits the sleep wake up signal (wake up) to each unit when any of the wake-up conditions are ful-
filled. It changes from the low power consumption mode to the normal mode.
• Each unit starts the transmission of CAN communication with the sleep wake up signal. Each unit transmits
the wake up signal to BCM via CAN communication to report the CAN communication start.
CAN sleep condition
BCM sleep condition
• Receiving the sleep-ready signal (ready) from all units
• Ignition switch: OFF
• Vehicle security system alarm: No operation
• Warning lamp: Not operation
• Stop lamp switch: OFF
• Turn signal indicator lamp: No operation
• Exterior lamp: OFF
• Door lock status: No change
• CONSULT communication status: No communication
• Door switch status: No change
• Rear window defogger: OFF
• Driver door lock status: No change
• Key switch status: No change
• Interior room lamp battery saver: Time out
• RAP system: OFF
• Nissan Vehicle Immobilizer System (NVIS) - NATS: No opera-
tion
• Remote keyless entry receiver communication status: No com-
munication