Tailgate Lock Cylinder Switch - Operation

OPERATION

The tailgate cylinder lock switch is actuated when the key is inserted in the lock cylinder and turned to the unlock or lock position. The tailgate cylinder lock switch closes a path to ground through an internal resistor for the Totally Integrated Power Module (TIPM) when the tailgate key lock cylinder is in the lock or unlock position, and opens the ground path when the lock cylinder is in the neutral position. The TIPM reads the switch status, then sends the proper switch status messages to other electronic modules over the Controlled Area Network (CAN). The tailgate cylinder lock switch unlock status message is used by the TIPM as an input for Vehicle Theft Security System (VTSS) operation and to tell the TIPM to lock or unlock the tailgate. There is no mechanical linkage between the tailgate key cylinder and the latches.