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 the switches 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 communication.
• BCM transmits the sleep wake up signal (sleep) to each unit when all of the CAN sleep conditions are fulfilled.
• Each unit stops the transmission of CAN communication with the sleep wake up signal. BCM is in CAN communication 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
  
  

  CAN sleep condition

  BCM sleep condition

  Receiving the sleep-ready signal (ready) from all units Ignition switch: OFF Vehicle security system and panic alarm: No operation Warning chime: No 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 operation Remote keyless entry receiver communication status: No communication

Wake-up operation

• BCM transmits sleep wake up signal (wake up) to each unit when any condition listed below is established, and then goes into normal mode from low power consumption mode.
• Each unit starts transmissions with CAN communication by receiving sleep wake up signals. Each unit transmits wake up signals to BCM with CAN communication to convey the start of CAN communication.
  WAKE-UP CONDITION
  
  

  Wake-up condition

  Receiving the sleep-ready signal (Not-ready) from any units Hazard switch: ON HI BEAM switch: OFF → ON, ON → OFF PASSING switch: OFF → ON, ON → OFF HEADLAMP 1 switch: OFF → ON, ON → OFF HEADLAMP 2 switch: OFF → ON, ON → OFF TAIL LAMP switch: OFF → ON TURN RH: OFF → ON, ON → OFF TURN LH: OFF → ON, ON → OFF Driver door switch: OFF → ON, ON → OFF Passenger door switch: OFF → ON, ON → OFF Back door switch RH: OFF → ON, ON → OFF Back door switch LH: OFF → ON, ON → OFF Stop lamp switch: ON Door lock and unlock switch: NEUTRAL → LOCK, NEUTRAL → UNLOCK Front door lock assembly (driver side) (door key cylinder switch): NEUTRAL → LOCK, NEUTRAL → UNLOCK Remote keyless entry receiver communication: Receiving