Power Folding Top Description and Operation - Chevy SSR Forum
 
LinkBack Thread Tools Rate Thread Display Modes
post #1 of 3 (permalink) Old 04-22-2008, 08:41 AM Thread Starter
Member
 
WOW_FCTR's Avatar
 
Join Date: Mar 2003
Location: Sicklerville, NJ
Posts: 10,950


My SSR:
Black, '03, 1sb, #1256 and '05
Power Folding Top Description and Operation

Power Folding Top Description and Operation

Power Retractable/Moveable Top System Components
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

System Operation

Before any movement of the top is allowed, the following messages must be received by the RDM and may also be retransmitted periodically:


• Ignition in ACCY, RUN or RAP
• Brake is pedal pressed
• Vehicle speed less than 5 mph
• A/C is OFF
• Cargo cover is closed

The sequence for opening the top is as follows when holding the retractable roof switch to the OPEN request position:

1. Driver and passenger windows index down
2. Tonneau latch extending to unlatch
3. Tonneau latch extended, opened
4. Tonneau panel extending upward, opening
5. Tonneau panel extended upward
6. Front tonneau extending
7. Front tonneau extended
8. Header latch unlatching
9. Top panel dowel pins activate that top panel is not over center and unlatched
10. Top panel retracting, to open position
11. Top panel retracted to open position
12. Tonneau panel retracting downward, closing
13. Tonneau panel closed
14. Tonneau latch, retracted
15. Audible chime 2 times indicated cycle completed

The sequence for closing the top is as follows when holding the top retractable roof switch to the CLOSE request position:

1. Driver and passenger windows index down
2. Tonneau latch extending to unlatch
3. Tonneau latch extended, opened
4. Tonneau panel extending upward, opening
5. Tonneau panel extended upward
6. Top panel extending to close position
7. Top panel dowel pins enter receiver indicating top reached header
8. Header latch latching
9. Top panel dowel pins activate that top panel is over center, latched
10. Front tonneau retracting
11. Front tonneau retracted
12. Tonneau panel retracting downward, closing
13. Tonneau panel closed
14. Tonneau latch, retracted
15. Audible chime 2 times indicated cycle completed
16. Driver and passenger window close

Hydraulic Control

The roof door module (RDM) will control the hydraulic system to move the folding top by controlling the on/off state and direction of the hydraulic pump motor, and the open/close state of each valve.

The pump motor will be continuously monitoring the temperature sensor thermistor for a pump motor temperature being out of range. If the RDM detects a temperature between the pump motor pre-alarm and pump motor alarm, the current open/close operation shall complete, but no new top operation will be allowed until the pump motor cools below the pump motor pre-alarm. If the temperature reaches the pump motor alarm value, all top operation will cease. There is a low temperature value that will also cease all operation when the temperature is below this value.

Anytime the folding top control switch is released or the top becomes inoperative when it is not fully closed or open, pressure must be maintained in the system to avoid drifting and damage of components. After 4 minutes, hydraulic pressure should be released by cycling the valves on and off, allowing the top to gradually settle to a resting position.

Driver Notification

Listed below are under certain conditions the driver shall be alerted with a message sent via class 2 serial data to the driver information center (DIC).

• ROOF CYCLE TIMEOUT -- Displays when the folding top switch is active and the RDM has detected a fault that could potentially bind the system possibly causing mechanical damage. Roof operation ceases when this message appears.
• PUT VEHICLE IN PARK -- Displays when cargo cover is released as vehicle is out of park.
• STOP VEHICLE -- Displays when cargo cover is released as vehicle is moving.
• ROOF AJAR -- Displayed when cargo cover is released and roof system is not fully opened or closed.
• CARGO COVER AJAR -- Displays when folding top switch is active and the cargo cover is open or ajar.
• PRESS BRAKE -- Displays when folding top switch is active while vehicle is stopped and the brake is not pressed.
• REDUCE SPEED -- Displays when folding top switch is active while vehicle is above a maximum speed.
• UNKNOWN ROOF POSITION -- Displays when folding top control switch is active as either the folding top panel, stowage compartment lid panel or stowage compartment lid extension panel exceed the parameters of there set positions.
• HDR LATCH SWITCH FAULT -- Displays when folding top control switch is active and a fault is present with either the latched or unlatched limit switch.
• ROOF HALL SWITCH FAULT -- Displays when folding top control switch is active and a fault is present with either the top panel extended or retracted hall effect switch.
• TONN HALL SWITCH FAULT -- Displays when folding top control switch is active and a fault is present with the stowage compartment lid panel extended hall effect switch.
• TLAT HALL SWITCH FAULT -- Displays when folding top switch is active and a fault is present with the stowage compartment lid panel latched, left or right, hall effect switch.
• TONN LATD SWITCH FAULT -- Displays when folding top switch is active and a fault is present with either the left or right, stowage compartment lid panel latched switch.
• FLIP HALL SWITCH FAULT -- Displays when folding top switch is active and a fault is present with either the stowage compartment lid extension panel retracted or extended hall effect switch.

Switches

The folding top system monitors inputs from hall effect switches to determine the position of various components and to control the folding top system sequence. A hall effect switch that is attached to a hydraulic cylinder will become active, 1.5-3.5 volts output to RDM, as a cylinder reaches it's fully extended or retracted position based on the location of the hall effect switch.

The stowage compartment lid extension panel hall effect switches become active as the stowage compartment lid extension panel cycle approaches the extended or retracted positions. The hall effect switches are active as they sense the magnetic field as the cylinder approaches each end of it's travel, causing the switch to become active, 1.5-3.5 volts.

The header has a folding top outer latch actuator with two limit switches that monitor the header latch position, and a dowel pin limit switch to monitor the roof panel at the header. As the folding top panel is closing up to the header, the dowel pin, as it first enters the pin guide receiver, signals the RDM that the top is at the header and aligned. The RDM will control the folding top outer latch actuator to latch, pulling the top panel closer into the header. The dowel pin will enter further into the pin guide receiver, again signaling that the top is now over center and latched. The folding top outer latch striker position switch will also signal an input to the RDM confirming that the top is latched and to stop the control outputs to the folding top outer latch actuator.

Class 2 Communications

The RDM communicates via class 2 to determine the status of the vehicle out of park, and vehicle speed. These parameters are monitored and can inhibit top operation.
WOW_FCTR is offline  
Sponsored Links
Advertisement
 
post #2 of 3 (permalink) Old 04-25-2008, 04:40 AM
Administrator
Lifetime Supporting Member
 
Marc NY's Avatar
 
Join Date: Jun 2004
Location: Western, NY
Posts: 8,189


My SSR:
SSR 04 – PEDIGREE SSR Photo History w/ 1st Aux. Gauge Package released for Production. #9684
Garage
Send a message via AIM to Marc NY
Post 03-04 Tonneau Cover/Convertible Top

#05-08-67-005A: ASI Resolution - Tonneau Cover (Roof) Does Not Open Evenly or Will Not Open (Install Bushing) - (Oct 18, 2005)


Subject: Tonneau Cover/Convertible Top (Roof) Does Not Open Evenly or Will Not Open (Install Bushing)


Models: 2003-2004 Chevrolet SSR

Built Prior to VIN Breakpoint 4B108184

--------------------------------------------------------------------------------

This bulletin is being revised to add the Delrin Roller Part Number. Please discard Corporate Bulletin Number 05-08-67-005 (Section 08 -- Body and Accessories).

--------------------------------------------------------------------------------

Condition
Some customers may comment that the roof/tonneau cover does not open evenly or the roof/tonneau cover won't open.

Cause
Attached Thumbnails
Click image for larger version

Name:	03-04 Roof.jpg
Views:	1110
Size:	305.8 KB
ID:	49384   Click image for larger version

Name:	Close Up.jpg
Views:	951
Size:	125.9 KB
ID:	49385  


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Marc NY is offline  
post #3 of 3 (permalink) Old 11-12-2008, 01:02 PM
Original SSR Centerfold
Lifetime Supporting Member
 
dingbat's Avatar
 
Join Date: Mar 2004
Location: Palm Coast, Florida
Posts: 3,121


My SSR:
04 Redline red #11672 born on 6-22-04 adopted 10-14-04 Pinstriping handpainted by "Shakey"
Power Folding Top Description and Operation

Training Manual for roof operations Download Here
Attached Thumbnails
Click image for larger version

Name:	cover.jpg
Views:	701
Size:	54.1 KB
ID:	101432  
dingbat is offline  
Sponsored Links
Advertisement
 
Closed Thread

  Chevy SSR Forum > The Library > Articles

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevy SSR Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes Rate This Thread
Linear Mode Linear Mode
Rate This Thread:



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome