GM Longroof Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.



 
HomeHome  PortalPortal  GalleryGallery  Latest imagesLatest images  SearchSearch  RegisterRegister  Log in  

 

 Twilight Sentinel always on

Go down 
4 posters
AuthorMessage
lamune

lamune


Posts : 868
Join date : 2014-05-09
Location : Seattle

Twilight Sentinel always on Empty
PostSubject: Twilight Sentinel always on   Twilight Sentinel always on Icon_minitimeSat Jan 30, 2016 4:59 pm

I never really used it before, but I noticed that the car thinks it's dark all the time. If the TS is on, the lights are on, whether it's dark out or not.

This is actually handy right now, because the headlight switch bezel broke and thus I can use the TS on/off in lieu of the normal headlight switch. Smile

I hate to tear the dash apart so before I do that, how do these things normally fail? The sensor according the schematic is just a photodiode, which should be pretty robust. The control module I'm not entirely certain of it's location. The book says it's it on the passenger side (somewhere). Maybe I broke something when I changed out the heater core if it's down in that area.
Back to top Go down
Krzdimond
Admin
Krzdimond


Posts : 3412
Join date : 2008-11-04
Age : 57
Location : Savannah, GA

Twilight Sentinel always on Empty
PostSubject: Re: Twilight Sentinel always on   Twilight Sentinel always on Icon_minitimeSat Jan 30, 2016 6:49 pm

That Sentinal box is a white plastic box mounted behind that little triangle piece of plastic in front of the passenger door (under the dash)

They are known to fail and "always on" is the default fail safe (better than no lights at all).
Back to top Go down
lamune

lamune


Posts : 868
Join date : 2014-05-09
Location : Seattle

Twilight Sentinel always on Empty
PostSubject: Re: Twilight Sentinel always on   Twilight Sentinel always on Icon_minitimeSun Jan 31, 2016 1:39 am

Thanks, I wasn't sure what it looked like and that helped me out. Smile

I fixed it. Testing at the module side I was getting nothing from the sensor. So if anyone finds this later, here's some tips.

The sensor is not a photodiode, it's just a regular CdS photocell in a cute blue plastic holder. The big black dome thing is the sun load sensor for the A/C, the headlight one is in the little hole behind it. I never noticed that before, and I thought the domed thing was the headlight sensor.

And that's the key in this case, the sensor is down at the bottom of a hole. The defroster grill was really cruddy, that crud fell in the hole, and the sensor was totally blocked by same crud.

If your lights stay on all the time, try cleaning out that hole with cotton swabs or something similar and see if that helps. If not the defroster grill can be pulled straight up to access the sensor from below. Use caution as the plastic there is exposed to sunlight and can get especially brittle.
Back to top Go down
Bert Slater

Bert Slater


Posts : 254
Join date : 2015-03-23
Location : Melrose Florida

Twilight Sentinel always on Empty
PostSubject: Re: Twilight Sentinel always on   Twilight Sentinel always on Icon_minitimeSun Jan 31, 2016 8:04 am

question about sentinel, mine only turns on the headlights, not the tail or dash lights. Any ideas? Thanks Again!!!
Back to top Go down
lamune

lamune


Posts : 868
Join date : 2014-05-09
Location : Seattle

Twilight Sentinel always on Empty
PostSubject: Re: Twilight Sentinel always on   Twilight Sentinel always on Icon_minitimeSun Jan 31, 2016 12:57 pm

Looking at the schematics, I would suspect a problem in the module. If you take the cover off the module you'll see two relays inside. One is for the headlights, one for the parking lights. You can try closing them manually by pushing on the contacts to see if the lights come on or not.
Back to top Go down
Brandt51

Brandt51


Posts : 115
Join date : 2017-08-14
Location : Las Vegas Nevada

Twilight Sentinel always on Empty
PostSubject: Re: Twilight Sentinel always on   Twilight Sentinel always on Icon_minitimeSun Oct 01, 2017 5:08 pm

Mine stays on all the time too...but only after I tinted the windshield at 38%....worth it in Las Vegas.
Back to top Go down
Sponsored content





Twilight Sentinel always on Empty
PostSubject: Re: Twilight Sentinel always on   Twilight Sentinel always on Icon_minitime

Back to top Go down
 
Twilight Sentinel always on
Back to top 
Page 1 of 1
 Similar topics
-
» adding twilight sentinel
» Dash lights don't come on with twilight sentinel
» Automatic headlights with twilight sentinel
» twilight sentinel stopped working 1995 Roadmaster
» Twilight Sentinel Dial Control acting wonky

Permissions in this forum:You cannot reply to topics in this forum
GM Longroof Forum :: Longroof Tech :: Electrical-
Jump to: