keyless entry 98

how can i tell if our car has keyless entry? where would the control box for it be? its a 98 four door 4 cyl.
TIA

you can get a jumper wire and a paper clip; attach the paper clip in slot #1 (the upper left slot) on the diagnostic link connector and attach a jumper wire to a good body ground. If the door locks cycle, that means you have a remote keyless entry module on your vehicle. The aforementioned method puts the module in programming mode.