00:00Did you know that your car recognizes when you select reverse, neutral, or drive?
00:03This is thanks to the TR sensor, also known as the transmission range sensor.
00:07Their job is to detect the position of the lever.
00:09The TR sensor is installed in the transmission, connected to the gear selector shaft or mechanism.
00:14When you move the lever, the sensor changes its electrical signals to indicate exactly which position was selected.
00:19Each position generates a different signal.
00:21The parking system indicates that the vehicle is parked.
00:23In reverse, that function is active; in neutral, it allows starting; and in drive, it signals that the transmission should begin shifting.
00:28the changes.
00:29The TR sensor signal reaches the engine control module and the transmission module.
00:33With this information, the computers control the ignition, automatic shifting, and internal transmission pressure.
00:39A very important function of the TR sensor is to prevent the engine from starting with a gear engaged.
00:44The vehicle should only start in park or neutral, preventing it from moving forward or backward when the key is turned.
00:48When you select reverse, the TR sensor reports this position to the system.
00:52Depending on the vehicle, it allows you to turn on the reverse lights.
00:55activate the rear camera and modify the transmission operation.
00:58In summary, the TR sensor tells the car which position you selected in the transmission.
01:02Without a correct signal, the car may become confused, fail to start, or select the wrong gears.
01:06That's why it should be checked with a scanner or multimeter.
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