tailgate sensor module

What was the symptom which caused you to have the car looked at by a mechanic?

I have never heard of a tailgate sensor module in a 1992 Camry. What body style and trim level is your Camry?

Where did you take your car for diagnostics and what is the problem with the car?

He's gotta have a stationwagon, doesn't he?

If so, what would this module be responsible for, making sure there was no strike between the gate and the window?

No.

Since I have never heard of a tailgate sensor in a Toyota, I do not know what it would be responsible for. Toyota uses logical names for its sensors, and the name "tailgate sensor" suggests that the module senses the presence of a tailgate. Perhaps I am giving people credit for too much intelligence, but I think most people would know if there is a tailgate in back of the car or not.

I think it is more likely that the OP is talking about the rear light failure sensor, which is present in both sedans and wagons, which is why I asked why the OP took the car in for diagnosis and year and model. I also know that those sensors are very reliable and rarely fail. If an independent service facility checks the bulbs and can't find one that is burnt out, they might recommend changing the sensor without actually checking the sensor, a sure sign of diagnostic incompetence or laziness.

By asking the OP questions, I try to get an idea of what they are trying to fix and what repair attempts were made. With that additional information, I can try to make an informed evaluation and provide useful advice.