Left and Right Front Door Lock Cylinder Switches

The door lock cylinders are equipped with switches which are used in order to disarm the CTD system. The respective door modules detect a ground input when the following actions occur:
^ The CTD system arms.
^ The lock cylinder turns in order to unlock the door (the switch closes).

The door module sends a message via the Simple Bus Interface (SBI) serial data line to the Driver Door Module (DDM), except for when the left front door lock cylinder switches close. The DDM sends a door unlocked message via the class 2 data line to the RFA module when the following actions occur:
^ The DDM detects a ground input.
^ The DDM receives a door unlocked message. When the RFA receives this message, the RFA enters standby mode. Service the door lock cylinder switches separately from the lock cylinder.