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 each 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 perform 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
- 1 minute after turning ignition switch OFF
- Theft warning alarm and panic alarm: Not operation
- Warning chime: Not operation
- Stop lamp switch: OFF
- Turn signal indicator lamp: Not operation
- Exterior lamp: OFF
- Door lock status: No change
- CONSULT communication status: Not communication
- Door switch status: No change
- Key switch status: No change
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- Interior room lamp battery saver: Time out
- RAP system: No communication
- Nissan anti-theft system (NATS): Not operation
- Remote keyless entry receiver communication status: No communication
- Tire pressure monitoring system (TPMS): Stop
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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 transmit wake up signals to BCM with CAN communication to convey the start of CAN communication.
Wake-up condition
| BCM wake-up condition |
CAN wake-up condition |
| Back door opener switch: OFF → ON |
- Receiving the sleep-ready signal (Not-ready) from any units
- Ignition switch: OFF → ACC, ON
- Key switch: OFF → ON, ON → OFF
- 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
- FR FOG switch: OFF → ON, ON → OFF
- 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
- Rear RH door switch: OFF → ON, ON → OFF
- Rear LH door switch: OFF → ON, ON → OFF
- Back door switch: OFF → ON, ON → OFF
- Stop lamp switch: ON
- Door lock and unlock switch: NEUTRAL → LOCK, NEUTRAL → UNLOCK
- Front door lock assembly (driver side) (unlock sensor): OFF → ON, ON → OFF
- Front door lock assembly (driver side) (door key cylinder switch): NEUTRAL → LOCK, NEUTRAL → UNLOCK
- Remote keyless entry receiver communication: Receiving
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