Sleep Mode

To conserve power, the entire BCU goes into a 'sleep' mode 16 minutes after signal activity ceases and the ignition is switched off. The typical current consumption of the BCU in sleep mode is 1.25 mA. In the sleep mode the BCU is in a limited operational mode from which it can be awakened by certain relevant wake-up signals. After being awakened, the BCU remains awake for 1 minute if no action is triggered. If an action is triggered, the BCU remains awake for at least 16 minutes.

The BCU wakes up when it receives a signal from any of the following:

• The K bus
• Any door status switch (driver, front passenger, LH and RH rear doors)
• Bonnet status switch
• Central door locking switch
• Driver's door lock cylinder lock switch
• Driver's door lock cylinder unlock switch
• Interior lamp switch
• Lower tail gate opening switch
• Tilt alarm sensor
• Ultrasonic sensor
• Upper tail gate opening switch
• Upper tail gate status switch.
  Fig 1: Identifying BCU Harness Connector (1 Of 2)

  Courtesy of LAND ROVER NORTH AMERICA, INC.
  Fig 2: Identifying BCU Harness Connector (2 Of 2)

  Courtesy of LAND ROVER NORTH AMERICA, INC.
  Fig 3: Identifying BCU Harness Connector C0661 Pin Detail Chart

  Courtesy of LAND ROVER NORTH AMERICA, INC.
  Fig 4: Identifying BCU Harness Connector C0662 Pin Detail Chart

  Courtesy of LAND ROVER NORTH AMERICA, INC.