Ignition Switch - Push Button Start

The Ignition switch - push button start switch is a momentary contact switch that is hardwired to the RFA module, BCM, and PCM. When the switch is pressed, it signals the RFA module, BCM and PCM that there is a request to either switch the ignition on or start the engine. The Ignition switch - push button start is connected to both modules as a backup in case of a failure. If there is a circuit failure to either module from the start/stop switch, the modules communicate the start/stop switch request to each other over the Medium Speed Controller Area Network (MS-CAN). The Ignition switch - push button start is also called the engine start/stop switch.