REVERSE LIGHTS DO NOT WORK

The reverse lights should come on every time we engage in reverse gear and also the ignition switch is in the contact position or the engine is running.
The reversing lights are forming a fairly simple circuit: Protection fuse, Switch or reversing switch and two 12V 22 watt (22W) lamps.
Knowing the simplicity of the reverse light circuit, we can review these 3 elements when having a failure in the reverse lights.
To check the reverse lights fuse, we must locate a fuse with the name in English of: BACKUP LAMP, REVERSING LAMP, REVERSING LIGHT in the cabin fuse box.
12V bulbs or lamps are often damaged and appear black or with a broken filament.
Finally, the reverse switch is located on the transmission box bolted, and is activated by a rod that moves the cable when moving to the reverse position.