CTD Circuit Description: Inputs
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The BCM monitors the following inputs:
- The door LOCK/UNLOCK switch; a serial data message from the DDM
- The driver and passenger door ajar switches; both a serial data message from the DDM/PDM and a discrete input
- The liftgate/liftglass ajar switch; a discrete input to the BCM
- Driver door cylinder switch; a serial data message from the DDM
- The keyless entry transmitter LOCK/UNLOCK buttons; a serial data message from the RCDLR
- The immobilizer status-The BCM uses the immobilizer status for disarming the system or silencing and alarm when the correct vehicle key is used to start the vehicle