Sleep/Wake-Up Control Mode

The sleep/wake-up control mode allows the communication between BCM and LCUs to be turned on and off, as necessary, to prevent unnecessary power consumption. When BCM detects following conditions, it will shut off communication with all LCUs and then sleep mode is activated after about 30 seconds: ignition off, electrical loads off and timer off.

Communication with all LCUs will be re-established (system in normal control mode) if BCM detects a wake-up signal from the data line to LCUs or if a key switch "off" signal (ignition turned from on to off) is detected. The BCM will also re-establish communication with all LCUs if it detects an "on" signal from one of the following switches, which are directly connected to BCM.

• Key Switch (key inserted)
• Ignition Switch (ACC or ON)
• Headlight Switch (first detent)
• Door Switches (all doors)
• Trunk Lid Lock/Unlock Switch
• Trunk Lid Key Cylinder Tamper Switch
• Trunk Compartment Light Switch
• Engine Hood Switch
• Door Unlock Sensors (all doors)
• Door Key Cylinder Tamper Switches (front doors)
• Door Key Lock/Unlock Switches (front doors)