Jump to content

LED turn/clearance open circuit fault

Recommended Posts

Change your flasher to an electronic type instead of the one supplied.  I did the same thing on my IH 4700, and when I turned on the lights to check operation, the blinkers acter wacko.  Changed the flasher and all is good.  Circuit is looking for some load to operate the flasher and the LEDs dont have enough of a load.

Link to post
Share on other sites

By far the easiest solution is to add a resistor across each of the LED bulbs.  As far as taking away the "advantage" of LED bulbs, the only thing the resistor does is draw a little bit of current when the LED light is on to clear the trouble code.  Not enough to worry about unless you plan on leaving your truck unattended with the flashers on for more than a day or two.


Edited by Lou Schneider
Link to post
Share on other sites

So, the flasher sound in the cab is fast. The turn signals blink at a normal rate.

The open circuit error happens when you turn the key to the on position. Computer is checking stuff I guess.

Where's the flasher relay located? I'm guessing under the top dash panel where the fuses and such are.

Link to post
Share on other sites

Generally speaking, installing aftermarket (probably chinese) LED bulbs into fixtures originally intended for incandescent bulbs results in degraded lighting performance....not to mention the electrical problems you are having. 

I'd put the normal bulbs back in (use bulb grease) and move on to the next upgrade.




Edited by podwerkz
Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...