Combination Switch Reading Function: Description

BCM reads the status of the combination switch at 10ms interval normally.

Fig 1: Combination Switch Reading Function Chart
Courtesy of SUZUKI OF AMERICA CORP.

NOTE: BCM reads the status of the combination switch at 20ms interval when BCM is controlled at low power consumption control mode.
BCM operates as follows and judges the status of the combination switch.
- INPUT 1 - 5 outputs the voltage waveforms of 5 systems simultaneously.
- It operates the transistor on OUTPUT side in the following order: OUTPUT 5 → 4 → 3 → 2 → 1.
- The voltage waveform of INPUT corresponding to the formed circuit changes according to the operation of the transistor on OUTPUT 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: Identifying Waveform Of Combination Switch
  Courtesy of SUZUKI OF AMERICA CORP.