9-3 1999

Convertible Top

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Power Convertible Top



Diagnosis & Testing
  1. Measure voltage to check for open circuits by performing the following:

    Engage the load
     
    Set the multi-meter to voltage measurement and connect its minus cable to a good grounding point
     
    Connect the voltmeter positive cable to the point where the voltage is to be tested
     
    On the output side of a switch/control module, it is best to start there and then gradually move out towards the load
     
    The break point in the circuit has been passed when the voltage disappears
     
    On the input side of a switch/control module/consumer, it is best to start at the closest point to the power source (often the fuse) and then gradually move towards the switch/control module/consumer
     
    The break point in the circuit has been passed when the voltage disappears
     

  2.  
  3. Measure resistance to check for open circuits by performing the following:

    Make sure the component or lead being tested is not carrying a current (e.g. by removing the associated fuse)
     
    Set the multi-meter to resistance measurement and connect it across the component/lead being tested
     
    Move the wiring harness in question while observing the ohmmeter
     
    The resistance of the wiring harness should normally be less than 1 ohm. A specified value applies to components
     

  4.  
  5. Check for short circuits to ground by performing the following:

    Make sure the lead being tested is not carrying a current (e.g. by removing the associated fuse) and that any load has been disengaged
     
    Set the multi-meter to resistance measurement
     
    Connect one test cable to a good ground and the other to the point to be tested
     
    Carefully move the wiring harness and make sure the multi-meter shows infinite resistance (OL) the whole time
     

  6.  
  7. Check components connectivity and functionality. Replace components as necessary.
  8.  

Removal & Installation
Hydraulic Unit
  1. Before servicing the vehicle, refer to the precautions.
  2.  
  3. Run the soft top to closed position with the fifth bow raised and the soft top cover lowered but not locked.
  4.  
  5. Open the boot lid and remove the scuff plate.
  6.  
  7. Remove the luggage compartment upholstery on the right side and fold it aside.
  8.  
  9. Remove the right light cluster for easier access to the drive mechanism.
  10.  
  11. Loosen the nuts that secure the cables for the mechanism and remove the clips.

    Click image to see an enlarged view

    Fig. Loosen the nuts that secure the cables for the mechanism and remove the clips

  12.  
  13. Remove the clips and stub axles that secure the cylinder. Lift away the cylinder and lay it at the front of the luggage compartment.
  14.  
  15. Unscrew the screws holding the mechanism.
  16.  
  17. On certain vehicles, it may be necessary to remove the universal joint stop screw.

    Click image to see an enlarged view

    Fig. On certain vehicles, it may be necessary to remove the universal joint stop screw

  18.  
  19. Lift the drive mechanism out.
  20.  

To install:

  1. Unhook the gas spring's lower mounting.
  2.  
  3. Install the mechanism and tighten the bolts.
  4.  
  5. Install the gas spring to its lower mounting.
  6.  
  7. Use an extension and press back the mechanism and gas spring to the correct position so that the cylinder can be installed.
  8.  
  9. Install the cylinder and Install the stub axles and clips.
  10.  
  11. Install the cables.
  12.  
  13. Install the universal joint stop screw with thread lock.
  14.  
  15. Install the light cluster as well as the luggage compartment upholstery and the scuff plate.
  16.  

Switch

The convertible top switch is located in the center console.

  1. Before servicing the vehicle, refer to the precautions.
  2.  
  3. Remove the switch using a screwdriver or by pressing from below and pulling straight up (the switch is secured with clips).
  4.  
  5. Unplug the switch contact.

    Click image to see an enlarged view

    Fig. Switch location in the center console

  6.  

To install:

  1. Installation is the reverse of removal.
  2.  

 
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