Question about 1992 Toyota Celica

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Cannot find the fuse for the convertible top's hydraulic pump

The convertible top does not work. There is no power at the switch that controls the roof and no power at the hydraulic pump that powers the roof. I cannot find the electrical fuse for the pump to see if it just a blown fuse. I looked through my shop manual's wiring diagram and could not find it there either. Anyone know where the fuse for the power top is hidden (in plain sight?)

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  • Norman Wagner Jan 10, 2009

    I have just checked and .....I cannot find a 15 amp fuse in the drivers kick fuse panel that is named top stack or anything remotely similar. I have left the manual at school, in the mx shop, so cannot look up the schematic right now but the wiring diagram does not normally help to physically locate things anyway. I also checked the colors of wires and the wires to the motor are as you say: black w/yellow stripe and blue w/red stripe. The wires to the switch that controls the top are blue, black and blue w/ red stripe. The only 15A fuses in the drivers kick panel are (I am numbering them, #1, from the top left going right in the top row, #4 being first one in the second row and the last one, #9, furthewest right in the bottom or 3rd row down) #2 CID&RAD , #3 STOP, #4 GAUGE, #6 ECU-IG, #5 ECU-B, and finally #6 TAIL. There appears to be a relay bolted next to the motor in the right rear quarter panel, accessed thru the trunk. I do not see any fuses there though.

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Have you made sure that the button switch, located in the truck, on the left upper side behind a small access door, is moved to the power system side rather than the MANUAL side. This button disconnects the elec system to raise and lower the top manually.
Good luck.
RG owner of a 97 Celica conv., my fun car.

Posted on Aug 19, 2009

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Drivers kick panel shows a convertible top fuse , #4 15amp fuse .now i see something in the schematics called TOP STACK , googled it and it refers to a convertible top , wierd , but anyway , it shows a top stack switch , a top stack main relay and a top stack fuse and a top stack relay . if you have the same manual , work with me , does your motor that powers the top have a blue/red and a blue/yellow wires to it , and the switch does it have a blue/red , a blue and a black wire ? do you see in your manual a top stack fuse r/b #3 ?

Posted on Jan 09, 2009

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1 Answer

07 corvette top will retract but deck lid makes no effort to close, then top will not go back up. Need to release pressure in block lift top up about 1/4 of way then top will go back up


Manually Moving the Folding Top from the Down Position
Important: Allow the system a minimum of four minutes to bleed down pressure after the last cycle.
Manually release the folding top cover latch using the emergency release cable.
Raise the folding top stowage cover.
Manually raise the folding top, holding the 5 bow up.
Manually lower and latch the folding top stowage cover.
Manually unfold the top and latch per normal procedure.

Manually Moving the Folding Top from the Up Position
Important: Allow the system a minimum of four minutes to bleed down pressure after the last cycle.
Manually release header latch per normal operation.
Manually lift front of roof off of the header and raise the #5 bow at the same time.
Manually release the Folding Top Cover latch using the emergency release cable.
Fold the roof down into the well.
Manually close and latch the folding top stowage cover.

Power Folding Top System Components
The power folding top system consists of the following components:
• Folding top control (FTC) module
• Body control module (BCM)
• Folding top control switch
• Serial data communication
• Folding top cover latch actuator
• Folding top cover pull down actuator
• Folding top pump motor with valve manifold
• Position switches and limit switches:
- Pin receiver switch
- Luggage barrier switch
- Folding top cover open switch
- Top open switch
- Top closed switch
- 5 bow raised switch
- 5 bow lowered switch
• Tonneau release relay
• TONNEAU PULL DOWN ACTUATOR Fuse 20 A
• TONNEAU RELEASE Fuse 10 A
• BATT 2 Fuse 40 A
• REAR FOG/ALDL TOP SW Fuse 10 A
• Folding top mechanical components:
- Folding top
- Folding top cover
- Folding top valve 1
- Folding top valve 2
- Folding top valve 3
- Hydraulic lines and cylinders

Folding Top Cover Latch Actuator
The power folding top system includes a folding top cover that is powered open and close by a hydraulic system that is controlled by the FTC module. A power unlatch motor is used to unlatch the folding top cover before the folding top control (FTC) module powers the top cover open. The folding top cover unlatching is requested by the FTC module via class 2 message, but is executed by the body control module (BCM). When requested, the BCM applies battery voltage through the folding top cover release relay control circuit to the tonneau release relay. The relay is energized and battery voltage is applied through the folding top cover release control circuit to the latch actuator. The actuator is energized and the latch releases the folding top cover.

The electronics on this are very complex ,

System Operation
Before any movement of the power folding top is allowed, the folding top control (FTC) module must be aware of the following conditions:
• Unlatch the header. The FTC module reads the pin receiver switch is Inactive.
• The windows must be normalized. Refer to Power Window Reinitialization.
• The ignition must be placed in Accessory or RUN.
• The transmission must be placed in PARK, or with manual transmission, the park brake must be applied.
• Trunk status must not be ajar.
• The luggage barrier must be in place.
• The pump motor temperature must be within the operating range.

After the last cycle of power folding top operation, allow the hydraulic system a minimum of 4 minutes to bleed down before attempting manual operation of the top.
Your best bet take and have it checked for DTC'S - diagnostic trouble codes .
DTC B3666 Rear Tonneau Position Error
DTC B3667 Tonneau Release Circuit
DTC B1011
DTC B1291
DTC B1420
DTC B3602
DTC B3666
DTC B3667
DTC B3670
DTC B3971

Jan 23, 2017 | 2007 Chevrolet Corvette Convertible

1 Answer

On a 207 G6 GT Pontiac retractable hardtop where is the sensor that gives the message top not secure. Top goes up and down seem secure will not allow the trunk to open with the key or door button


The retractable hard top is controlled by the folding top control (FTC) module.
Power Folding Top System Components
The power folding top system consists of the following components:
?€¢
The folding top control (FTC) module


?€¢
Hydraulic pump assembly; valve 1, valve 2 and motor


?€¢
The hydraulic lines and the cylinders


?€¢
GMLAN communication to the Body Control Module (BCM)


?€¢
Open/Close request circuit to the driver and passenger window motors


?€¢
Power and Grounds


-
Folding Top Main Power Fuse 30A


-
Folding Top Logic Power Fuse 20A


-
Ground G301 for the FTC module and G305


?€¢
Folding Top Open/Close Switch (S15 and S16)


?€¢
Rear Compartment Limit Switches


-
Rear Compartment Lid Release Switch (S3 and S4)


-
Rear Compartment Lid Release Switch-Front Hinge-Left (S11 and S12)


-
Rear Compartment Lid Release Switch-Front Hinge-Right (S9 and S10)


-
Folding Top Front Location Pin Guide-Left (S17 and S18)


-
Rear Compartment Lid Release Switch-Left (S19A)


-
Rear Compartment Lid Release Switch-Right (S19B)


-
Rear Compartment Partition Position Switch (S20)


-
Folding Top Front Location Pin Position Switch (S13)


-
Folding Top Front Latch Actuator Position Switch (S14)


?€¢
Hall Effect Sensors


-
Folding Top Header Latch Cylinder Sensor (S1)


-
Rear Compartment Cylinder Extended Sensor (S2)


Your best bet is have the system checked for DTC'S - diagnostic trouble codes ! If it showed a message top not secured there is a DTC stored in the control module ! there are 24 possible DTC'S

May 29, 2015 | 2007 Pontiac G6 GT

1 Answer

Manually reset convertible top


Could be a fuse too. Definitely electric

Mar 20, 2014 | 2005 Mercedes-Benz Mercedes Benz E320 Cdi

1 Answer

Mini cooper convertible top won't go up


do you hear hydralic motor if not use test light while operating control switch up and down position, you need a helper for this procedure.if power is at switch, see if power at hydralic motor while helper work the control switch, if no power at motor hook test light to good ground if no power at hydralic motor check fuse.if power at hydralic motor and you hear no sound hydralic motor bad.if power going to control switch and not to hydralic motor either control switch bad or you have broke loose wire at switch going to motor.if all electrical system okay and when you work the up switch and hear hydralic motor running your hydralic fluid level low reason why convertible top not going up.check fluid level at the side of the motor and pump you should see screw type check plug.you should have see through side reservoir fluid level should be between min and max marks.if fluid is low check for leaks at the pump hoses and hydralic cylinders.

Nov 27, 2011 | Mini Cooper Cars & Trucks

1 Answer

Convertible top will not go up. Message say fault switch


The first thing that you need to do is scan the BCM (body control module) for failure codes.This top is computer controlled & will not function is certain failure codes are set

I would suspect a hall effect switch failure which will stop the operation of the top

The power retractable/moveable top system consists of the following components:
Roof door module (RDM) • Hydraulic system including pump motor • Hydraulic lines and valve manifold • Electronic actuator for latching the top to the header • Folding top mechanics for the top: - Top - Stowage compartment lid panel - Stowage compartment lid extension panel - Latching mechanism for the top • Serial data communication • Position sensing hardware: - Limit switches - Hall effects as position sensors of the cylinders • Top open/close control switch • Power supply: - RDM/windows 30 circuit breaker - PWR roof 30A circuit breaker - RDM2 15A fuse - IGN 0 10A fuse • Grounds: - G300 - G301
Good luck, i hope this helps.

Jul 05, 2011 | 2003 Chevrolet SSR

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

1995 Jaguar convertable XJS quarter light windows wont go up


The rear windows are controlled by a timer in the top's ECU. If
the rear windows stop fully closing before your top is closed, the
problem MAY be with top's hydraulic system.

Check your top's hydraulic reserve tank for low fluid level. Lack
of fluid will greatly delay the top's closing sequence, leaving
those rear windows partially open.
Your top's hydraulic pump system is located beneath the right side
of the cubby/storage box behind the front seats. Raise the cover
and you'll see a removable trim panel on the right side. The pump
is behind that access panel.

You can use power steering fluid to top off the tank, but don't
fill it above level indicator line. You may have to add more fluid
after you cycle the top up and down to get the air bubbles out of
the lines.
It could also be a relay. On a 95 the relays that are in the trunk above the battery.
Perhaps, just switching the relays might prove which one is failing..

Mar 24, 2010 | 1995 Jaguar XJ-R

1 Answer

Convertible Top won't go down


Your top only has one motor. It powers a hydraulic pump that operates two hydraulic cylinders.
If one cylinder is not working, it is either damaged, worn or there is a problem supplying fluid to it.
Always replace cylinders in pairs.

Jun 28, 2009 | 1996 Chevrolet Cavalier

1 Answer

19886 saab 900 convertible roof not working.


Hi David:

First, check the fuses for the hydraulic motor; if they're blown, replace and monitor (why did they blow? Perhaps an overload, or ...) These fuses are located in the engine bay on top of the fender by the front right wheel housing.

Next check the voltage supply to the top switch, possibly a loose connection or broken wire.

Also check relays C (raising top) and D (lowering top) under the rear seat.

Lastly check for voltage at the pump, also under the rear seat, when the switch is actuated, and that the voltage polarity reverses when the switch is actuated the other way (up or down).

After that, it's a hydraulic/mechanical problem. Check the fluid level in the pump reservoir (use SAAB fluid to top up if low) Fluid level should be at the upper marker with top down, and at the lower marker with top up.

Check behind the rear seat side panels that the piston shaft is still properly attached to the roof mechanism bracket at one end, and the piston itself is still firmly attached to the body. Look for any leakage from the system.

If all tests out OK and looks good under the rear seat and behind the side panels, then there is the possibility that the piston seals have failed and the fluid is just circulating around without activating the piston. Pistons are available (http://www.convertibletopguys.com/cgi-local/displaycat.cgi?cat=584 - scroll down) but the entire system should be removed to avoid getting hydraulic fluid on the interior.

However, that fact that you can operate the hood using the bypass valve (manually) would indicate that the hydraulics are likely OK, and that it's probably an electrical or mechanical problem.

Good luck!

Saabreur

Jun 09, 2009 | 1998 Saab 900

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