Question about 1997 Chevrolet Cavalier

1 Answer

Convertible top not working

Motor or another component causing top not to raise or lower convertible top. Would like to repair, however, cannot locate motor or assembly to proceed.

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  • jbeaver111 Jun 22, 2009

    I'm working on a 93 cavalier Z24 convertible.

    I have to 'help' the top when raising it and will retract 'down' with little help. Don't know the system, whether their is another mechanism along with the motor that actuates the system to raise and lower top.

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  • 84 Answers

Before you even begin, I would check prices and availability. A lot of top parts for this are no longer available or VERY expensive. All parts are under panels in rear. Just be patient and remember where they go.

Posted on Jun 22, 2009

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Posted on Jan 02, 2017

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05 mustang convert.no open/close,makes clicking sound.2 relays,fuse,switch checked,new motor/hydraulics.Are there other relays,open close sensors? Top works UP when grounded externally, but not DOWN.


Principles of Operation
Convertible top operation is controlled by the smart junction box (SJB). When the convertible top raise/lower switch is operated, the SJB commands the front and rear windows to the full down position. Window operation is disabled while the convertible top raise/lower switch is being operated. When the SJB receives a full down input for both rear windows, it commands the appropriate relay closed to raise or lower the convertible top. If the SJB does not receive a full down input signal for both rear windows, convertible top operation is disabled.
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 LH and RH stay pads are attached to the convertible top frame bows, and provide the main source of tension for the convertible top material. When the convertible top is in the full down position, it stores in the compartment behind the rear seat backrest. When the convertible top is in the full up position, the body provides a stop which the convertible top frame number 5 bow contacts to provide a weather seal for the convertible top against the body.
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 motor/pump assembly is equipped with a thermal circuit breaker. The circuit breaker typically resets after 5 minutes depending on the ambient temperature. The thermal circuit breaker cannot be repaired and must be installed as a unit with the motor/pump assembly. In the event of a hydraulic system failure, the convertible top cannot be operated manually.

  1. Verify the customer concern.
  1. Visually inspect for obvious signs of mechanical or electrical damage.


Visual Inspection Chart Mechanical Electrical
  • Convertible top brackets and frame
  • Hydraulic motor and pump
  • Hydraulic lift cylinders
  • Hydraulic lines
  • Bussed electrical center (BEC) fuse(s):
    • 13 (40A)
    • 51 (10A)
  • Circuitry
  • Convertible top switch
  • Smart junction box (SJB)
  • BEC
  • Convertible top raise relay
  • Convertible top lower relay
  • Left or right rear power window motor

  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  1. If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
    • check that the program card is correctly installed.
    • check the connections to the vehicle.
    • check the ignition switch position.
  1. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
  1. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
    • SCP or ISO circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
    • No response/not equipped for SJB; refer to Section 419-10 .
    • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out self-test diagnostics for the smart junction box (SJB).
  1. If the DTCs retrieved are related to the concern, go to the Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index.
  1. If no DTCs related to the concern are retrieved, GO to Symptom Chart .
  2. do you know what DTC'S - diagnostic trouble codes are ?
  3. Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1141 Convertible Top Full Down Position Switch Circuit Failure SJB Go To Pinpoint Test E . B1142 Convertible Top Full Up Position Switch Circuit Failure SJB Go To Pinpoint Test E . B1402 Driver Power Window Down Switch Circuit Failure SJB Go To Pinpoint Test A . B2068 Convertible Top Up Output Circuit Failure SJB Go To Pinpoint Test A . B2069 Convertible Top Down Output Circuit Failure SJB Go To Pinpoint Test A . B2481 Convertible Top Up/Down Switch Fault SJB Go To Pinpoint Test A . B2578 Passenger Power Window Down Switch Circuit Failure SJB Go To Pinpoint Test A . All other DTCs - SJB REFER to Section 419-10 . Your best bet , take it to a qualified repair shop , before you short out the smart junction box .
  4. $336.54 then 300 bucks to program at ford

Feb 16, 2018 | Cars & Trucks

1 Answer

I have a 2007 mustang convertible top that will not go down. with key on windows go to park down position but no hydraulic pump sound checking fuses to ensure good power. where should i begin?


Principles of Operation
Convertible top operation is controlled by the smart junction box (SJB). When the convertible top raise/lower switch is operated, the SJB commands the front and rear windows to the full down position. Window operation is disabled while the convertible top raise/lower switch is being operated. When the SJB receives a full down input for both rear windows, it commands the appropriate relay closed to raise or lower the convertible top. If the SJB does not receive a full down input signal for both rear windows, the convertible top operation is disabled.

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 motor/pump assembly is equipped with a thermal circuit breaker. The circuit breaker typically resets after 5 minutes depending on the ambient temperature. The thermal circuit breaker cannot be repaired and must be installed as a unit with the motor/pump assembly. In the event of a hydraulic system failure, the convertible top cannot be operated manually.

Inspection and Verification
  1. Verify the customer concern.
  1. Visually inspect for obvious signs of mechanical or electrical damage.


Visual Inspection Chart Mechanical Electrical
  • Convertible top brackets and frame
  • Convertible top latches
  • Convertible top pump and motor assembly
  • Hydraulic lift cylinders
  • Hydraulic lines
  • Bussed electrical center (BEC) fuse(s):
    • 13 (40A)
    • 51 (10A)
  • Circuitry
  • Convertible top pump and motor assembly
  • Convertible top ajar switch
  • Convertible top switch
  • Connector(s)
  • Convertible top raise relay
  • Convertible top lower relay
  • LH or RH rear power window motor
  • Smart junction box (SJB)
  • BEC

  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  1. If the cause is not visually evident, connect the scan tool to the data link connector (DLC) and select the vehicle to be tested from the scan tool menu. If the scan tool does not communicate with the vehicle:
    • check that the program card is correctly installed.
    • check the connections to the vehicle.
    • check the ignition switch position.
  1. If the scan tool still does not communicate with the vehicle, refer to the scan tool operating manual.
  1. Carry out the scan tool data link test. If the scan tool responds with:
    • CAN or ISO circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
    • No response/not equipped for SJB; refer to Section 419-10 .
    • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out self-test diagnostics for the SJB.
  1. If the DTCs retrieved are related to the concern, go to the Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index.
  1. If no DTCs related to the concern are retrieved, GO to Symptom Chart .
  2. Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1141 Convertible Top Full Down Position Switch Circuit Failure SJB Go To Pinpoint Test E . B1142 Convertible Top Full Up Position Switch Circuit Failure SJB Go To Pinpoint Test E . B1402 Driver Power Window Down Switch Circuit Failure SJB Go To Pinpoint Test A . B2068 Convertible Top Up Output Circuit Failure SJB Go To Pinpoint Test A . B2069 Convertible Top Down Output Circuit Failure SJB Go To Pinpoint Test A . B2481 Convertible Top Up/Down Switch Fault SJB Go To Pinpoint Test A . B2578 Passenger Power Window Down Switch Circuit Failure SJB Go To Pinpoint Test A . All Other DTCs - SJB Refer to Section 419-10 .
  3. Your best bet ,take it to a qualified repair shop !

Nov 05, 2017 | Cars & Trucks

2 Answers

Mustang convertible top


You don't need a manual to check the fuses 1 at a time. Just doing a visual (or use multimeter) will sometimes let you find a bad fuse. You do know that the top is raised and lowered using small motor located under the hood. Use dianostic code reader to find out who, what, where the problem is. Most readers are free to use at Autozone, Advanced Auto Parts, and NAPA.

May 01, 2014 | 1999 Ford Mustang Cobra

1 Answer

Electric convertible top does not completely retract on 1997 328i


check hydraulic fluid level in the hydralic motor pump behind left side trim panel in the trunk.look on side or end of the motor pump assembly.look for screw type check plug. first place rags under the check plug to catch fluid spill unscrew the check plug fluid level should be 1/4 inch bottom of check plug hole if low you need add correct level fluid. then screw in check plug back in place.to bleed air out hydralic system you need helper to hold switch while you raise and lower the top slowly by hand raise and lower top several times to remove air out hydralic system. see if your convertible top will open and close all the way.

Oct 17, 2013 | 1997 BMW 318

1 Answer

Top worked fine yesterday but today tried to let down only clicked


It is a hydraulic pump that applies pressure to the 2 hydraulic pistons to raise & lower the top. So, check for something obstructing movement first.

The convertible top:
  • is motor-driven.
  • requires parking brake engaged to complete circuit for operation.
  • is equipped with a back window glass (42006) . The back window glass is permanently attached to the folding top back window curtain (52500) and cannot be opened.
--------------------------------------------------------------------------------------------------------------------------
VISUAL INSPECTION CHART Mechanical Electrical
  • Damaged fluid reservoir.
  • Damaged folding top hydraulic cylinders .
  • Damaged folding top motor upper and lower hose .
  • Damaged convertible top regulator.
  • Parking brake not engaged.
  • Open power distribution box circuit breaker CONV TOP (30A), fuse junction panel Fuse 1 (15A).
  • Circuitry open/shorted.
  • Damaged convertible top switch.
  • Damaged raise/lower relay .
  • Damaged folding top hydraulic lift motor and plate kit .


  • Convertible Top Does Not Raise/Lower
  • Open circuit breaker or fuse.
  • Circuitry open/shorted.
  • Damaged folding top switch.
  • Damaged raise/lower relay .
  • Damaged folding top hydraulic lift motor and plate kit .
  • Parking brake not engaged.


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Jun 29, 2011 | 1998 Ford Mustang

1 Answer

I have a 2005 PT Cruiser. The convertible top was down. When I went to put it back up, I had no power. The fuse was fine. I bled the pressure off the cylinders and manually put the top up. The wondows on...


HYDRAULIC PUMP/MOTOR ASSEMBLY 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 Controller Area Network (CAN) data bus is functional, that all of the electronic modules are sending and receiving the proper messages on the CAN data bus, and that the power top motor is being sent the proper hard wired output by the driver window regulator module.


NOTE: The convertible top system is equipped with a hydraulic bypass screw that is used to relieve pressure from the hydraulic system in the event that the top must be manually raised or lowered (such as a low battery or a convertible top operating concern). Always verify that the bypass screw is tight in the pump housing prior to replacing a hydraulic pump/motor assembly (Refer to 23 - Body/Convertible Top - Standard Procedure). If the power top is completely inoperative and the hydraulic pump/motor assembly is suspect, perform the following:

(Refer to 23 - Body/Seats/SEAT BACK - Removal).(Refer to 23 - Body/Convertible Top/ASSEMBLY, Hydraulic - Removal). If not OK, use a scan tool and the proper Diagnostic Procedures Information to complete diagnosis of the power top system.

On convertible vehicles, the convertible top switch is hard wired to both window regulator modules by the Power Top Switch Mux circuit. When a top operation input is received by the driver window module, it will ground the respective relay control circuit which in turn will operate the motor. If the convertible top switch is pressed and held to the down position second detent, it will command both modules to drop all windows to the fully down position. The windows cannot be raised when the convertible top switch is in the top down position. When the switch is held in the top up position and all four windows are fully up, the modules will lower the respective front window 40 mm (1.6 in), lower the respective rear window approximately 55 mm (2 in) and the driver window module will ground the top up relay control circuit. Once the top is back up the windows will not raise automatically.

Your missing that you don't have a clue on how the electronic's on your vehicle work . Your best bet , take it to a qualified repair shop . Your trying to fix something you have no clue on how it works , going at it blind .

Jan 04, 2018 | Chrysler PT Cruiser Cars & Trucks

1 Answer

The convertible top will not go up or down, although it sounds as if it wants to. Is there a way to manually raise/lower the convertible top?


There are 2 hydrolic rams that raise and lower your roof. You can just disconect them from the top, then manualy raise and lower the top. But it sounds more like your fluid level is low. Open your trunk and find the pump pull the plug and fill the resiorvor.

Apr 27, 2009 | 1999 Chrysler Sebring

1 Answer

Convertible top


they are runon hydraulics you may have a leak in the hose but yes u can disconnect the motor and raise and lower it maunally

Jul 14, 2008 | 1998 BMW Z3 Roadster

2 Answers

Having problems lowering my convertible top on a Saab 1997 SE


"check latches" comes across my screen when trying to lower my convertible top on my Saab 900

Jun 01, 2008 | 1997 Saab 900

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