Sebring 2006

Convertible Tops

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Power Convertible Top



Diagnosis & Testing
Motor
  1. Any diagnosis of the power top system should begin with the use of a scan tool and the proper Diagnostic Procedures Information. The scan tool can provide confirmation that the Programmable Communications Interface (PCI) data bus is functional, that all of the electronic modules are sending and receiving the proper messages on the PCI data bus, and that the power top motor is being sent the proper hard wired output by the Body Control Module (BCM).
  2.  
  3. Address any Diagnostics Trouble Codes (DTC-s) present in the system.
  4.  
  5. If no DTC-s are stored and the power convertible top is completely inoperative, continue to the following diagnostic steps.
  6.  
  7. Check the 40-amp fuse in the Power Distribution Center (PDC).
    1. If the 40-amp fuse is good, go to the next step.
    2.  
    3. If the 40-amp fuse is faulty, repair the shorted circuit or the troubled component as required and replace the inoperative fuse.
    4.  

  8.  
  9. Remove the rear seat cushion.
  10.  
  11. Remove the rear seat back.
  12.  
  13. Disconnect the motor/hydraulic pump assembly 2-wire electrical connector.
  14.  
  15. Place a 12-volt test light between the terminals in the harness side connector.
  16.  
  17. With the ignition switch in the RUN position, operate the power top switch in both directions. The test light should light in both directions.
    1. If the test light illumines, replace the inoperative motor/hydraulic pump assembly.
    2.  
    3. If the test light fails to illuminate, go to the next step.
    4.  

  18.  
  19. Disconnect the power top relay assembly.
  20.  
  21. With the ignition switch in the RUN position, check for Battery voltage at the B+ terminal of the harness connector.
    1. If battery voltage is not present, repair the open B+ circuit as necessary.
    2.  
    3. If battery voltage is present, go to the next step.
    4.  

  22.  
  23. Using an ohmmeter, test for continuity between the harness connector ground circuit and a known good ground. Continuity should be present.
    1. If continuity is not present, repair the open ground circuit as necessary.
    2.  
    3. If continuity is present, go to the next step.
    4.  

  24.  
  25. Place a 12-volt test light between the fused B+ and power top UP relay control terminals in the harness side of the connector. With the ignition switch in the RUN position, operate the power top switch in the UP direction. The test light should light.
  26.  
  27. Place a 12-volt test light between the fused B+ and power top DOWN relay control terminals in the harness side of the connector. With the ignition switch in the RUN position operate the power top switch in the DOWN direction. The test light should light.
    1. If the test light illumines, replace the inoperative power top relay.
    2.  
    3. If the test light does not light, go to the next step.
    4.  

  28.  
  29. Turn the ignition switch to the OFF position. Disconnect the BCM. Using an ohmmeter, check for continuity on the power top UP and DOWN circuits between the BCM and the power top relay assembly. Continuity should be present.
    1. If continuity is present, replace the inoperative BCM.
    2.  
    3. If continuity is not present, repair the control circuits as necessary.

      Click image to see an enlarged view

      Fig. Power convertible top electrical circuit schematics

    4.  

  30.  

Operation

The power top system allows the convertible top to be raised and lowered electrically by actuating a switch in the center floor console. The power top system receives battery feed through a fuse in the Power Distribution Center (PDC) when the ignition switch is in the ON position.

The main components of the power top system are:



The power top framework and bows
 
The motor/hydraulic pump assembly
 
The power top well
 
The power top relay assembly
 
The power top pivot bracket
 
The latch system
 
The window regulator modules

Click image to see an enlarged view

Fig. Power convertible top components



Click image to see an enlarged view

Fig. Components of the motor/pump assembly, hydraulic lines, and electrical connections

 

The power top motor is part of the motor/hydraulic pump assembly and cannot be serviced separately. If the motor is inoperative, the complete assembly 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 percent of the 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 the windows to the fully down position.

The power top switch (convertible vehicles only) has 3 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 commands all 4 windows down simultaneously. The switch must be 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 be raised to the full-up position by the vehicle operator.
 


NOTE
The convertible top will raise slowly or make abnormal noise if the hydraulic fluid level is low. Always ensure the hydraulic fluid level is within specifications prior to component replacement.

Switch
  1. Any diagnosis of the power top system should begin with the use of a scan tool and the proper Diagnostic Procedures Information. The scan tool can provide confirmation that the Programmable Communications Interface (PCI) data bus is functional, that all of the electronic modules are sending and receiving the proper messages on the PCI data bus, and that the power top motor is being sent the proper hard wired output by the Body Control Module (BCM).
  2.  
  3. Address any Diagnostics Trouble Codes (DTC-s) present in the system.
  4.  
  5. If the problem being diagnosed is an inoperative power top switch illumination lamp, but the power top switch operates as designed, replace the power top switch.
  6.  
  7. If the problem being diagnosed is an inoperative power top up or down, perform the following steps.
  8.  
  9. Disconnect and isolate the battery negative cable.
  10.  
  11. Remove the power top switch.
  12.  
  13. Disconnect the power top switch wire harness connector.
  14.  
  15. Using an ohmmeter, test the resistance measured between pins 2 & 3 of the power top switch. Check the resistance in each switch position and compare these readings to the following chart.

    Click image to see an enlarged view

    Fig. Switch position and resistance measured between pins 2 & 3

    1. If the resistance is according to specification, use a scan tool and the proper Diagnostic Procedures Information to complete the diagnosis of the power top system.
    2.  
    3. If the resistance is not according to specification, replace the inoperative power top switch.

      Click image to see an enlarged view

      Fig. Power convertible top switch connector end view

    4.  

  16.  

Removal & Installation
Motor
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Move the top to the down position.
  4.  
  5. Disconnect the battery negative terminal.
  6.  
  7. Remove the rear seat cushion and rear seat back.
  8.  
  9. Disconnect the pump wire connector connection.
  10.  
  11. Remove the motor from the floor panel.
  12.  
  13. Holding the motor assembly with the reservoir up, squeeze the fill plug to release any air pressure from the system.
  14.  
  15. Mark the connections and disconnect the hydraulic lines from the pump.
  16.  
  17. Remove the motor/pump assembly from the vehicle.

    Click image to see an enlarged view

    Fig. Power convertible top components



    Click image to see an enlarged view

    Fig. Components of the motor/pump assembly, hydraulic lines, and electrical connections

  18.  

To install:

  1. Position the hydraulic motor in the vehicle.
  2.  
  3. Connect the hydraulic lines to the pump. Tighten the fittings to 98-106 inch lbs. (11-12 Nm) torque.
  4.  
  5. Connect the pump wire connector.
  6.  
  7. Connect the battery negative terminal.
  8.  
  9. Bleed the motor/pump hydraulic fluid system. Refer to Power Convertible Top, removal & installation, Convertible Top Motor, Bleeding the Hydraulic Motor/Pump Assembly.
  10.  
  11. Fill and verify the operation of the hydraulic pump.
  12.  
  13. Press the hydraulic motor into the mounts.
  14.  
  15. Install the rear seat cushion and rear seat back. Ensure that the rear seat back will not pinch and/or cause kinks in the hydraulic lines.
  16.  
  17. Check the power convertible top for proper operation.
  18.  

Bleeding The Hydraulic Motor/Pump Assembly

After replacing any component of the power lift mechanism or if the convertible top does not start to raise within 2 seconds from when the switch is activated, bleed the convertible top motor/pump assembly.

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Raise the top to the full up position. Do not latch the folding top.
  4.  
  5. Remove the rear seat cushion, the seat back, and the quarter trim panels.
  6.  
  7. Completely detach the cylinders from the attachment points (mounting bracket nuts and pivot bolts attaching the cylinder shafts to the top linkage). The cylinders should be extended.
  8.  
  9. Remove the motor from the floor panel. Keep the motor connected to the wire harness.
  10.  
  11. Hold the cylinders upside down (cylinder rod pointing down).
  12.  
  13. Hold the motor/pump assembly with the reservoir up. The rubber fill plug will be at the top.
  14.  
  15. Raise the motor/pump assembly to at least 2 inches above the horizontal rear seat back reinforcement.
  16.  
  17. Cycle the system at least once, making sure the cylinders can extend without obstruction. Allow for a 2-3 second stall time. There may be a percolating or gurgling sound, which indicates that the procedure is working.
  18.  
  19. Hold the cylinders in a normal position and cycle the system at lease once, making sure the cylinders can extend without obstruction. Allow for a 2-3 second stall time. There may be a percolating or gurgling sound, which indicates that the procedure is working. At this point, any air in the system should have migrated to the reservoir.
  20.  
  21. Retract the cylinders completely and remove the rubber fill plug from the reservoir. The fluid level may be low.
    CAUTION
    The motor/pump assembly must remain in the current position until the rubber filler plug is reinstalled.

  22.  
  23. Fill the hydraulic system by adding Dexron® III Automatic Transmission Fluid to the reservoir. The fluid level should be 1 / 2 - 3 / 4 inch (13-20mm) below the top of the reservoir.
    CAUTION
    Do not operate the folding top switch while the rubber fill plug is not installed on the motor/pump assembly.

  24.  
  25. Install rubber fill plug.
  26.  
  27. Secure the motor/pump assembly into the floor panel mounts.
  28.  
  29. Extend the cylinders.
  30.  
  31. Place the cylinders into their original position with the hose fittings pointing rearward.
  32.  
  33. Install the pivot bolt attaching the cylinder shaft to the top of the linkage. Ensure all rod eye components are present (foam, plastic bushing, and plastic lock washer).
  34.  
  35. Install the cylinder mounting bracket and nut. Ensure all trunnion split bushings are present. Tap the folding top switch to adjust cylinder length, if needed.
    CAUTION
    Hydraulic cylinders produce enough force to produce severe injury. Keep hands and fingers away from moving hydraulic cylinders and components attached to them.

  36.  
  37. Install all the hydraulic line clips and secure the hydraulic lines to the body.
  38.  
  39. Verify that the system operates properly.
  40.  
  41. Install the quarter trim panels.
  42.  
  43. Install the rear seat back and cushion and ensure that the seat back/seat cushion do not pinch or kink the hydraulic lines.
  44.  
  45. Again, verify that the system operates properly.
  46.  

Switch
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect and isolate the battery negative cable.
  4.  
  5. Using a suitable flat-bladed tool, pry up on the top side of the floor console switch plate.
  6.  
  7. Disconnect the power top switch connector.
  8.  
  9. Disconnect the heated seat switch connector, if equipped.
  10.  
  11. To remove the power top switch from the bezel, use both thumbs and slightly pull out on the 2 retaining tabs holding the switch.

    Click image to see an enlarged view

    Fig. Components of the floor console switch assembly



    Click image to see an enlarged view

    Fig. Location of the retaining and locator tabs on the floor console

  12.  

To install:

  1. From the rear of the switch bezel, gently push the power top switch in until it is secured by the 2 retaining tabs.
  2.  
  3. Connect the power top switch connector.
  4.  
  5. Connect the heated seat switch connector, if equipped.
  6.  
  7. Install the switch bezel into the floor console opening. Line up the 2 lower locating tabs with the console and push the top of the bezel in until the retaining tab is fully seated.
  8.  
  9. Connect the battery negative cable.
  10.  
  11. Verify the power top system operation.
  12.  

 
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