Trailer brake install but "Hood Ajar" warning on

I installed a Tekonsha BC on my 18 TRD Sport with towing pkg but now my "Hood Ajar" warning won't turn off. Thought it might be the sensor on the hood latch so I replaced that but no change. I dont see any loose wires, etc., and disconnected the trailer brake wiring harness but still no change. What could I be missing? Fuse? Loose plug somewhere?

 

Check this connector here (assuming you tapped into it):


Make sure it's seated all the way and there are no recessed pins. I would also check the ground if that was removed as well.

 

Is this the pre-wired harness for the BC?

 

No, it is NOT.
This is:

 

That's what I'm plugged into.

First image is the plug, the second is where it is grounded behind the kick panel. (Ground is the white wire barely seen)

 

IS4 & IS3 are on Passenger side kick panel...

 

I'm not sure what you're referring to. I didn't do anything on the pax side

 

Maybe the "hood ajar" is unrealted to the BC installation, but I would suspicious since wiring was messed with. I would carefully inspect everything that was touched.

 

That's what I suspected as well but the only wiring I did was add the trailer brake harness between the installed plug and the BC. I didn't splice into any wires. It was all plug and play

 

Mess with any grounds then?

 

Just grounded it under the left kick panel

 

I believe that's the same ground that the hood switch uses.

 

Is it possible it needs to self-reset somehow?

 

This is where I grounded it

 

Try this: remove the connector to the hood pin, place a small wire jumper on the exposed terminals inside the removed connector. Have someone verify if the indicator goes off.

 

I tried something similar with the old sensor wire. I snipped it off, exposed the two wires, twisted them together then plugged it into the plug attached to the truck under the hood. No difference. It stiĺl shows Hood Ajar. Is that similar to what you suggested or different?

 

Same.

 

Seems you'll need TechStream to assist ya.