Combination Switch Reading Function

DESCRIPTION

• BCM reads the status of the combination switch at 10 ms intervals normally.
  Fig 1: Combination Switch Input And Output Signal Waveforms

  Courtesy of NISSAN NORTH AMERICA, INC.
  NOTE:

  BCM reads the status of the combination switch at 60 ms intervals when BCM is controlled at low power consumption control mode.

• BCM operates as follows and judges the status of the combination switch.
  • It operates the transistor on OUTPUT side in the following order: OUTPUT 1 → 2 → 3 → 4 → 5, and outputs voltage waveform.
  • The voltage waveform of OUTPUT corresponding to the formed circuit is input into the interface on INPUT side if any (1 or more) switches are ON.
  • It reads this change of the voltage as the status signal of the combination switch.
    Fig 2: BCM Output And Input Waveform Patterns

    Courtesy of NISSAN NORTH AMERICA, INC.