weird headlight issue, during day only

[pass1over]

ON my drive home yesterday afternoon, I noticed my head unit kept dimming on it's own, then would go bright again. Didn't realize until I got off the interstate and was queued behind someone that my headlights were tuning on and off on their own. Which was causing the stereo to dim.

This morning, on my 40min drive to work, in the dark, the headlights stayed on the entire time, zero issues. Even my super bumpy, pot hole filled, limestone driveway wasn't causing them to flicker or turn off/on.

Since they're only misbehaving during the day. I can rule out the switch, the headlights themselves, and the wiring. I'm guessing it's whatever sensor in the circuit that measures the amount of light and auto turns on the lights?

 

[86GT351]

There is a sunload senor on the dash that could be faulty.

 

[pass1over]

That's what I was thinking it was. I wiped it down otw home jus tin case it had something on it, but didn't change it's behavior. I wiped the windshield area down as well, i'll see if it changes the behavior when I leave for lunch today.

It shows different call number for manual and automatic AC, are they different part numbers? When I look up the sensor, I don't see any reference to manual or auto AC.

 

[86GT351]

That's what I was thinking it was. I wiped it down otw home jus tin case it had something on it, but didn't change it's behavior. I wiped the windshield area down as well, i'll see if it changes the behavior when I leave for lunch today.

It shows different call number for manual and automatic AC, are they different part numbers? When I look up the sensor, I don't see any reference to manual or auto AC.

Message e the VIN and I'll have parts check

 

[pass1over]

Message e the VIN and I'll have parts check

Do you have access to the wiring diagram for this circuit? Want to see if there's anything else that might cause this before I throw parts at it. Thank you in advance.

 

[86GT351]

 

[86GT351]

 

[86GT351]

 

[86GT351]

 

[86GT351]

 

[86GT351]

That is the complete circuit for lams and headlamps

 

[pass1over]

I just see the same diagram repeated 5 times.

I'm pretty sure that part is going faulty regardless. Yesterday, the lights were turning off and on, rather quickly actually. I stuffed a t-shirt over the sensor and lights came on and stayed on. Removed shirt, they were ok for a bit, but starting acting erratically again shortly thereafter.

 

[86GT351]

I just see the same diagram repeated 5 times.

I'm pretty sure that part is going faulty regardless. Yesterday, the lights were turning off and on, rather quickly actually. I stuffed a t-shirt over the sensor and lights came on and stayed on. Removed shirt, they were ok for a bit, but starting acting erratically again shortly thereafter.

Sorry. I did the individual pages. I guess it did not recognize the screen shot

 

[pass1over]

I figured it was a technology issue. I'm pretty sure that sensor is the issue. Thank you for the assistance.