Test D: The Convertible Top Hydraulic System Is Inoperative/Does Not Operate Correctly

PINPOINT TEST D: THE CONVERTIBLE TOP HYDRAULIC SYSTEM IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

D1:

D2-D6:

Normal Operation
The convertible top switch supplies a ground signal for the smart junction box (SJB) on circuits 2038 (LB/OG) and 2052 (VT/OG). If the vehicle speed is less than 5 km/h (3 mph), the SJB grounds the appropriate relay (using either circuit 1174 [WH/RD] or circuit 588 [VT]) to direct voltage through the convertible top motor to raise or lower the convertible top. When the raise or lower relay is operating, the other relay remains in its normal state and supplies the motor/pump ground. When the SJB receives a request to operate the convertible top, the front and rear windows will open to the full down position. The SJB monitors the status of the rear windows on circuit 2012 (RD/BK) for the right rear window, and circuit 2014 (YE/LB) for the left rear window. When the SJB receives a full down input for both rear windows, convertible top operation is enabled. If the SJB does not receive a full down input for both rear windows, convertible top operation is disabled. Window operation is disabled when the convertible top raise/lower switch is active.

Possible Causes
- convertible top assembly
- hydraulic lift cylinders
- hydraulic motor/pump assembly
- hydraulic system