Convertible Top: Description and Operation

IMPORTANT: The Convertible Top Pump Assembly has voltage applied from the WINDOWS Circuit Breaker 15, which is controlled by the Retained Accessory Power (RAP) Module. Voltage is applied to the PWR ACCY Fuse for up to 10 minutes after Ignition is turned off or for 35 seconds after exiting the vehicle and closing the doors or whenever a door is open. For a complete understanding of RAP operation, refer to Retained Accessory Power. Accessory Delay Module

When the Ignition Switch is in "RUN," "ACCY," or RAP, voltage is applied from WINDOWS Circuit Breaker 15 to the Convertible Top Switch through CKT 341. The Convertible Top Pump Assembly receives ground through the Convertible Top Switch Assembly, which is grounded at G201. The Convertible Top Pump is driven by a reversible permanent-magnet motor. The motor is controlled by the Convertible Top Switch, which is normally closed to ground. When the Convertible Top Switch is moved to the "UP" position, battery voltage is provided to the Convertible Top Pump Assembly through the GRY wire. The Convertible Top Pump Assembly will receive ground through the PPL wire, the Convertible Top Switch, and drive the Convertible Top up. When the switch is released, the switch contacts will return to their normal grounded position.

To lower toe Convertible Top, the Convertible Top Switch will connect the PPL wire to battery voltage. Ground will be provided to the GRY wire through the Convertible Top Switch. The polarity across the motor will be reversed, causing the motor to rotate in the opposite direction and lower the Convertible Top. The Convertible Top Pump Assembly has two hydraulic hoses that go to the right-hand cylinder and two hydraulic hoses that go to the left-hand cylinder that evenly control the up and down movement of both cylinders simultaneously. The motor within the Convertible Top Pump Assembly is protected against an overload condition internally by an Electronic Circuit Breaker (ECB). If the motor in the Convertible Top Pump Assembly becomes overloaded, the ECB will increase its resistance and open up. By increasing its resistance, the ECB will prevent the motor from overloading. The ECB will close and reset to normal resistance when voltage to the motor is interrupted.