Turn Signal Issues

[jwhite8055]

I usually do a little research, run a few tests and arrive at the Ah-Ha! moment, but I'm stumped,confused even. The problem I have is that the Left Front turn signal isn't working, the rear turn signals work (both bulbs), with the hazard switch on, the flash is normal speed -in the rear, front left doesn't work, activating the left turn signal causes the typical fast-flashing in the left rear. Normally this might indicate a bad bulb, or even a bad ground. Neither is the case here. This leads to the BCM as the culprit. The kicker, is that I have an Autel diagnostic tool capable of reading live data from the BCM - no trouble codes are set- Live data shows the (switch)-input and (power)-output, signals are working for the left front, BUT the left rear is inactive! ANY ideas why this could possibly be?

 

[jwhite8055]

Yes your read that right, the computer is telling me that the rear turn signals are NOT working and the FRONT one is.

I am considering running a hot wire from the back turn signal to the front with a separate ground, and cutting the power from the BCM- thereby forcing a "series" of three (fast flashing) turn signals - and a brake light in the front....lol

 

[d10mike]

Did you find a fix?

 

[Vaeagleav]

Did you find a fix?

Doubt you will get a reply, he was last on the day after this post and hasn't returned.....(hover your courser over a person's name and it will show you when they were last on site FYI)

 

[d10mike]

Doubt you will get a reply, he was last on the day after this post and hasn't returned.....(hover your courser over a person's name and it will show you when they were last on site FYI)

It was worth a try I am on mobile guess I shoulda checked I had an 07 run through the shop with a similar issue