The power folding top system consists of the following components:

The folding top system consists of the FTC module, the hydraulic system including pump, motor, valves, hydraulic lines and cylinders, folding top mechanics that include the top, the decklid and roof latching mechanisms, position sensing limit switches and Hall effect sensors.

Before any movement of the top is allowed, the folding top control (FTC) must be aware of the following conditions:

The Folding Top Open/Close Switch inputs the users request to the FTC module to move the top to the open or closed position. The switch when activated, will have a 1.5 second delay before top operation is started.

Hall effect sensors that are attached to hydraulic cylinders will input to the FTC module as the cylinders become extended.

The Folding Top Header Latch Cylinder Sensor (S1) will become active when the hydraulic cylinder becomes extended, latching the top panel either at the windshield header or in the stowed position.

The Rear Compartment Cylinder Extended Sensor (S2) will become active as the hydraulic cylinder becomes extended as the decklid has fully reached the unconventional, reverse open position.

The Rear Compartment Lid Release Switch (S3 and S4) has two limit switches that input to the FTC module on the position of the latch arms as retracted and unlatched (S3) or extended and latched (S4) to the rear compartment lid.

The Rear Compartment Lid Release Switch-Front Hinge-Left (S11 and S12) and Rear Compartment Lid Release Switch-Front Hinge-Right (S9 and S10), input the status of the front hinges of the decklid to the FTC module when they are latched and unlatched.

The Folding Top Front Location Pin Position Switch (S13) will become an active input to the FTC module when the top is stowed into the rear compartment.

The Folding Top Front Latch Actuator Position Switch (S14) will become an active input to the FTC module when the mechanism for the top panel header latch has become latched in the over center position.

The Folding Top Front Location Pin Guide-Left (S17 and S18) inputs the status of the top panel at the windshield header. The dowel (S17) limit switch becomes active as the top panel comes into contact with the windshield header. The latched (S18) limit switch becomes active as the top panel has become latched.

The Rear Compartment Lid Release Switch-Left (S19A) and Rear Compartment Lid Release Switch-Right (S19B) will become active inputs to the FTC module as the front LH/RH portion of the decklid come down into contact to the hinges.

The Rear Compartment Partition Position Switch (S20), referred to as the cargo cover or as the luggage barrier limit switch, will become an active input to the FTC module as the panel is installed. The panel only needs to be installed when an open request is made.

The FTC module also controls the hydraulic system used to operate the folding top by controlling the on/off state and the direction of the pump motor and the open/closed state of the valves in the system. The FTC module will operate the hydraulic motor and the two valves simultaneously or independently to move the top to the direction requested by use of the folding top open/close control switch.

The FTC module will inhibit top operation if the outside temperature is too cold or if the calculated temperature is too hot. The top will not operate when the outside temperature is at -10 degrees C (14 degrees F) or colder. This outside temperature is sent from another module via GMLAN communications.

The FTC module will calculate the top motor over temperature based on the amount of top operations compared to how often they are performed. Going from open to closed or closed to open is considered one cycle. Approximately 5 cycles in a row will inhibit top operation.

Once an alarm temperature has been reached the FTC module shall allow one closing sequence. Open requests shall be inhibited until the temperature becomes acceptable.

The FTC module will send a signal to the front window motors during folding top operation. The windows will open at the beginning of the folding top operation. The windows will return to their original position upon completion of the requested folding top movement.