Pinpoint Test B: The Convertible Top Does Not Operate Correctly
Convertible Top
Pinpoint Test B: The Convertible Top Does Not Operate Correctly
Refer to Wiring Diagram Set 103, Convertible Top for schematic and connector information [1][2]Diagrams By Number.
Normal Operation
The convertible top hydraulic system uses a 12-volt reversible pump and motor assembly. When active, the pump uses hydraulic pressure to extend the hydraulic lift cylinders to raise the convertible top, or retract the hydraulic lift cylinders to lower the convertible top. The convertible top assembly is a floating frame, Z-fold design. The main pivot brackets are attached to the body, and the convertible top frame side rails expand or fold when the convertible top is raised or lowered. The convertible top frame bows attach to the convertible top frame side rails and provide tension for the convertible top material.
This pinpoint test is intended to diagnose the following:
- Convertible top frame bows
- Convertible top side rails
- Hydraulic fluid leak
- Hydraulic lift cylinders
- Hydraulic motor/pump assembly
- Low hydraulic fluid
PINPOINT TEST B : THE CONVERTIBLE TOP DOES NOT OPERATE CORRECTLY
B1 CHECK THE HYDRAULIC FLUID LEVEL
- Lower the convertible top.
- Gain access to the hydraulic motor and pump assembly.
- NOTE: Make sure that the hydraulic lift cylinders are fully retracted before checking the hydraulic fluid level.
Inspect the hydraulic reservoir and check the hydraulic fluid level.
Is the hydraulic fluid level at the "+" sign that is molded into the hydraulic reservoir?
Yes
GO to B4.
No
GO to B2.
B2 CHECK THE HYDRAULIC SYSTEM FOR LEAKS
- Inspect all hydraulic fittings and hoses for hydraulic fluid leaks.
Are any hydraulic fluid leaks present?
Yes
REPAIR the leaking hydraulic fitting or INSTALL a new hydraulic hose as necessary. BLEED the hydraulic system. REFER to System Bleeding . TEST the system for normal operation.
No
GO to B3.
B3 FILL THE HYDRAULIC SYSTEM
- NOTE: The hydraulic fluid level should be at the "+" sign that is molded into the hydraulic reservoir.
Add hydraulic fluid to the hydraulic fluid reservoir.
- Operate the convertible top system.
Does the convertible top system operate correctly?
Yes
The concern is not present at this time. RETURN the vehicle to the customer.
No
BLEED the hydraulic system. REFER to System Bleeding . TEST the system for normal operation.
B4 CHECK THE CONVERTIBLE TOP LINKAGE
- Remove the hydraulic lift cylinder bolts and disconnect the hydraulic lift cylinders from the convertible top linkage.
- NOTE: The convertible top is not adjustable. If the convertible top frame is damaged or requires adjustment, the damaged components must be replaced.
Manually operate the convertible top assembly up and down while observing the convertible top linkage.
Does the linkage operate smoothly without binding?
Yes
GO to B5.
No
INSTALL new components as necessary. REFER to Convertible Top Bows or Convertible Top Side Rail . TEST the system for normal operation.
B5 CHECK THE HYDRAULIC LIFT CYLINDERS
- Operate the hydraulic system using a 12-volt fused (40A) power source.
Do the hydraulic lift cylinders extend and retract fully and evenly?
Yes
GO to B6.
No
BLEED the hydraulic system. REFER to System Bleeding . If concern is still present after bleeding the hydraulic system, INSTALL a new hydraulic lift cylinder. REFER to Hydraulic System, Lift Cylinder and Motor . TEST the system for normal operation.
B6 BLEED THE HYDRAULIC SYSTEM
- Bleed the hydraulic system. Refer to System Bleeding .
- Operate the convertible top system upward and downward 3 times.
Does the convertible top system operate correctly?
Yes
The concern is not present at this time. RETURN the vehicle to the customer.
No
INSTALL a new motor and pump assembly. REFER to Hydraulic System, Lift Cylinder and Motor . TEST the system for normal operation.