R52 :: Cabrio Talk (2005-2008) Cooper and Cooper S convertible (R52) discussion.

2007 R52 S Top Won't go Down

  #26  
Old Today, 12:10 AM
08ragtop6s
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Originally Posted by duckranger View Post
Sorry for the hiatus. I finally had time tonight to mess with this some more.

I checked the ground bus under the driver seat. Perfect shape. Clean as a whistle with no corrosion.

Next I reset the cable actuators, and as predicted my connection to ground on pin 9 was good now.

Finally, I performed the window reset:
Pulled battery for 30 minutes
Reconnected battery
Started car
Cycled windows twice

No luck when I tried the convertible top. Same issue as before. Sunroof opened fine, but no window drop, no latch opening, and no convertible movement.

Tomorrow I will jump 12V to the indicated pins to force unlock and top motion. I will report back with my findings.
No worries! Excellent! Still odd that you're not getting any status at all... I'm thinking it very well could be a pump issue... I'm not positive if a low hydraulic level will give you a red blinking indicator, OR just simply not do anything... I do have a spare module if you want to try that as well!

Good luck!
 
  #27  
Old Today, 06:47 AM
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My guess is the Hall sensor in the top? Maybe the wires going to the top are chaffed?

https://www.northamericanmotoring.co...-top-woes.html

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  #28  
Old Today, 06:56 AM
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Originally Posted by 08ragtop6s View Post
No worries! Excellent! Still odd that you're not getting any status at all... I'm thinking it very well could be a pump issue... I'm not positive if a low hydraulic level will give you a red blinking indicator, OR just simply not do anything... I do have a spare module if you want to try that as well!

Good luck!
The windows should open before the pump tries to do anything, and thats not happening. We know the windows work on their own, so something is preventing the controller moving on the the next step once the sunroof opens, so I'm still thinking either the controller is faulty, or its missing the correct input from a sensor due to a bum sensor, bad wire or or bad connection.
 
  #29  
Old Today, 10:47 AM
duckranger
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Originally Posted by 08ragtop6s View Post
Good day! Apologies for not getting back sooner!

So, I'm thinking there is a break in the wire? The micro switch is working, when triggered manually... but no good ground at the pin? Hmm! *thinking*

The lack of a blinking red light has me stumped! It blinks to indicate there is a reason the top isn't going down, thus the top doesn't move....... Hmmmmmmmm!

Let's cycle the actuators for the locks first... the one that is giving you issues (pin 9) is right by the module... that black box on an angle with the cable coming from it... you can jumper 12v to pin 13(THIRTEEN) to operate both sides, OR just pull on the connector down to move just that side cable which will cycle the switch... Recheck pin 9 ground.... Ohhhhhh, I probably shouldn't say this, but in my attempts to fix mine, I actually forgot to plug in the module when I pushed the button to test it once..... So, yea.... Ummm!

Let's try to reset the windows when 9 is jumpered to ground.... Keep in mind, I do not recommend going full open on the top unless you confirm all other items are in place! Rear shelf is secured perfectly on all four points... both locking arms are secured closed in the trunk along the sides of the trunk... and the trunk is closed, just for GP... You may need to look up window reset cause I can't remember it perfectly... nevermind, I found it.... post#17... full battery reset and windows...

https://www.northamericanmotoring.co...ry-change.html

IF the window reset doesn't work, we might have a pump power issue or maybe a bad relay for pump opening...

After the window rest, try to work the top... I didn't need to do this, but mine may have been at the perfect spot (down and locked) when I plugged in the mod after my wire repair...

The following is just to test the top function! Again, make sure all points indicated above are correct... with OR without the sunroof open, jumper 12v to pin 1(ONE) until the locks open... then, when you can verify both arms are free from the windshield frame, jumper 12v to pin 11(ELEVEN) until the top moves... then jumper 11 again and watch it is opening smoothly! If anything looks out of place, pull the 12v! You are not doing high current stuff! You are operating the relays that are operating the top... I did everything I just said on an almost daily basis to keep using my top with the issue I had....

I have a spare mod if you want to try that as well....

Good luck! Fingers crossed the window reset works!

OK, we're making some progress.

I turned the ignition on (with the engine off).
I lowered all four windows, and then moved the top back to the sunroof position.
Next, I jumped pin 1 to 12V and the latches opened. Also, the red light now started blinking.
Finally, I jumped pin 11 to 12V and could hear the pump running, but nothing moved.

I tried several times going back and forth with the process, and never could get the top to move. Every time I jump pin 11, the pump runs, but no movement.

I'm guessing there are a couple issues:
1. Either the controller or a controller input is not moving the windows down, which keeps it from initializing the unlock and top down procedure
2. Issue with the pump (screw or fluid level) keeping the top from moving when the pump is activated. What is the correct setting on screw, and how do I check the fluid level in the pump?

Thanks for all the help so far!
 
  #30  
Old Today, 11:17 AM
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So is there something in the coding of the controller module that will stop it proceeding if it detects an issue with the hydraulics (hardware or fluid level)? It seems that all the hardware up to cycling the pump works as intended if you can get them to trigger. It seems unlikely to work that way so that takes us back to a bum sensor input preventing it working right, but that should trigger the red flashing light on the button.

Any sign of hydraulic fluid getting sprayed all over the trunk? My brother had an issue with that in his golf ragtop that made a real mess:(

Dont know if the attached pdf offers anything you dont already know...

Fluid level in an R52 is basically the same as in this video for an R57
 
Attached Files
File Type: pdf
CONVERTIBLE TOP OVERVIEW.pdf (1.35 MB, 2 views)

Last edited by Mineeee; Today at 11:31 AM.
  #31  
Old Today, 11:34 AM
duckranger
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Thanks.

More progress has been made. The fluid level was good. I decided to tighten the screw on the hydraulic pump. It was about 1.5 turns out. Looks like someone has worked on the top before...

Once I tightened the pressure relief screw, I repeated the process for jumping pins 1 and 11, and IT WORKED!!! Once it was fully open, I removed power from pin 11 and used the car buttons to close the top. The closing went just fine. Top lifted, locked itself in place, and then closed the sunroof and windows.

Now, we're down to one problem... Why won't the BOM move from sunroof open to window down...then top unlock and open...

I guess it must be 1 of 3 things
1. bad sensor
2. bad wiring
3. bad BOM

I checked the wiring, and can't see any obvious breaks, chaffing, corrosion, etc. Any thoughts on how to check the other items? Is it now time to accept 08ragtop6s's offer of trying a different BOM?
 

Last edited by duckranger; Today at 11:46 AM.
  #32  
Old Today, 11:49 AM
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Not sure, but did find this wealth of service info...
https://www.newtis.info/tisv2/a/en/r...roof-soft-top/
 
  #33  
Old Today, 02:54 PM
duckranger
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Originally Posted by Mineeee View Post
Not sure, but did find this wealth of service info...
https://www.newtis.info/tisv2/a/en/r...roof-soft-top/
That's a great site. Thank you very much! Going through those diagrams, it looks like maybe the sunroof open hall effect sensor is the issue. Anyone know which pin that feeds on the BOM?
 
  #34  
Old Today, 08:05 PM
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Originally Posted by duckranger View Post
That's a great site. Thank you very much! Going through those diagrams, it looks like maybe the sunroof open hall effect sensor is the issue. Anyone know which pin that feeds on the BOM?
Diagram here?
https://www.newtis.info/tisv2/a/en/r...nvertible-top/
/

looks like pin 3 for the roof open sensor.
 

Last edited by Mineeee; Today at 08:10 PM.
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