Driver In Vehicle Detection

Using the ignition switch/door ajar inputs, the Body Control Module (BCM) can detect whether or not the driver has left the vehicle. If the ignition is turned to OFF with no door ajar status detected, the BCM assumes that the driver is in the vehicle. As soon as the BCM detects a door ajar, the BCM will assume the driver has left the vehicle. The BCM uses this information for the RAP functions, then sends the information on the serial data line to the other systems also responsible for the RAP functions.