BCM Status Control

BCM changes its status depending on the operation status in order to save power consumption.

1. CAN communication status
   • With ignition switch ON, CAN communicates with other control units normally.
   • Control by BCM is being operated properly.
   • When ignition switch is OFF, switching to sleep mode is possible.
   • Even when ignition switch is OFF, if CAN communication with IPDM E/R and combination meter is active, CAN communication status is active.
2. Sleep transient status
   • This status shuts down CAN communication when ignition switch is turned OFF.
   • It transmits sleep request signal to IPDM E/R and combination meter.
   • Two seconds after CAN communication of all control units stops, CAN communication switches to inactive status.
3. CAN communication inactive status
   • With ignition switch OFF, CAN communication is not active.
   • With ignition switch OFF, control performed only by BCM is active.
   • Three seconds after CAN communication of all control units stops, CAN communication switches to inactive status.
4. Sleep status
   • BCM is activated with low current consumption mode.
   • CAN communication is not active.
   • When CAN communication operation is detected, it switches to CAN communication status.
   • When a state of the following switches changes, it switches to CAN communication state:
     • Ignition switch
     • Key switch (without Intelligent Key)
     • Key switch and ignition knob switch (with Intelligent Key)
     • Stop lamp switch
     • Hazard switch
     • Door lock/unlock switch
     • Front door switch (LH, RH)
     • Rear door switch (LH, RH)
     • Combination switch (passing, lighting switch 1st position, front fog lamp)
     • Keyfob (lock/unlock signal)
     • Front door key cylinder switch LH
   • When control performed only by BCM is required by switch, it shifts to CAN communication inactive mode.
   • Status of combination switch reading function is changed.