How can I tell if I have remote door locks?

Just got a 97 F150 etnded cab Lariot model......power locks, windows, leather, am-fm-cassette-CD. power seats, and more. No remote with the keys. No keypads on door. Plugged in an OBD2 diagnostic computer to see if it could contact the security system and got no response........Do I have any other way to tell if... show more Just got a 97 F150 etnded cab Lariot model......power locks, windows, leather, am-fm-cassette-CD. power seats, and more. No remote with the keys. No keypads on door. Plugged in an OBD2 diagnostic computer to see if it could contact the security system and got no response........Do I have any other way to tell if a remote would work with this truck's door locks, thanks...........
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