Convertible Top Switch: Description and Operation

The power top switch is located in the in the center floor console.

The switch has three distinct functions:
- Top Down - This is the first detent on the down side of the switch. Holding the switch in this position will lower the top only.
- Top Down/4 window down - This is the second detent on the switch. Holding the switch in this position lowers the convertible top and all 4 windows down simultaneously only if held in this position.
- Top Up - Holding the switch in this position raises the convertible top to the closed position. It will also lower all 4 windows approximately 3 inches to prevent seal damage. The windows must then be raised to the full up position by the vehicle operator.

The power top switch cannot be adjusted or repaired. If the switch is damaged or inoperative it must be replaced.

The power top switch is hard wired to the Body Control Module (BCM) through the Power Top Switch Mux circuit. The BCM supplies a multiplexed voltage of approximately 90% of ignition voltage to the power top switch. Through a series of resistors the power top switch switches the circuit to ground. The circuit resistance is varied depending on the switch position. When a top operation input is received by the BCM, it will ground the respective power top relay control circuit which in turn will operate the power top motor. If the power top switch is pressed and held to the down position second detent, the BCM will command the window drop relay assembly to drop all windows to the fully down position.