Decklid Release Switch - Operation

OPERATION

The Passive Entry (PE) deck lid release switch is a normally open switch that is connected to ground at all times. When the switch button is depressed, it provides a ground signal to the ElectroMechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN) through a deck lid release switch sense circuit. In response to that input, the EMIC sends an electronic unlock request message to the Passive Entry Module (PEM) over the Controller Area Network (CAN) data bus. The PEM determines the system response based upon the inputs it receives through the authentication process with each detected FOB with Integrated Key (FOBIK).

The diagnostic resistor integral to the output side of the switch enables the EMIC to monitor the condition of the deck lid release switch and switch sense circuit. The EMIC will store a Diagnostic Trouble Code (DTC) for any fault that is detected in this circuit.

The hard wired circuits between the PE deck lid release switch and the EMIC may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. However, conventional diagnostic methods will not prove conclusive in the diagnosis of the switch or the electronic controls and communication between other modules and devices that provide some features of the PE system. The most reliable, efficient, and accurate means to diagnose the PE system or the electronic controls and communication related to deck lid release switch operation requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.