Operation

FLIP-UP GLASS

The flip-up glass ajar switch is actuated by the flip-up glass latch mechanism. When the flip-up glass is closed and properly latched, the flip-up glass ajar switch is an open circuit. When the flip-up glass is open or only partially latched, the flip-up glass ajar switch is a closed circuit.

The flip-up glass ajar switch is hard wired between a body ground and both the Body Control Module (BCM) and the rear wiper motor. The output of the switch is connected to the BCM and rear wiper motor through a flip-up glass ajar switch sense circuit. The BCM reads the flip-up glass ajar switch status through an internal pull-up, then sends electronic flip-up glass ajar switch status messages to the ElectroMechanical Instrument Cluster (EMIC) over the Programmable Communications Interface (PCI) data bus and uses this input to control many electronic functions and features of the vehicle. The rear wiper motor uses this input to restrict rear wiper operation when the flip-up glass is ajar.

The flip-up glass ajar switch as well as the hard wired inputs and outputs of the switch may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information.