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There is a sensor which is under the passenger side seat. It is called an occupant detection sensor. When no one is in the seat, the light indicates the system is turned off on that side. When you have a passenger, the sensor completes the circuit and the system is activated.
I attached a picture. It is part of the SRS wiring schematic. It shows the sensor which I am referring to.
Now, if this is something that just started and you feel there is a fault, you should have it checked.
Let me know if this helps or if you have other questions.
Thursday, September 24th, 2020 AT 12:04 PM