Honda Prelude 1993 Service Manual page 1250

Seat Belt Reminder System
Description
NOTE: Refer to page 23-164 for the diagram of the
seat belt beeper/timer circuit.
With the ignition switch in "Run" or "Start", voltage is
applied to the beeper/timer of the integrated control
unit. When you unbuckle the driver's seat belt, the
beeper/timer circuil senses ground. With voltage at the
"89" terminal and ground
at the "RED/BLU" terminal.
the seat belt beeper sounds and the timer contacts
close and open. This causes the seat belt reminder light
to ilash on and off. After five seconds the alarm stoos
and the contacts .emain oDen.
Seat Belt Switch Test
Slide the f.ont seat all the wav forward then
disconnect the 2-P connector from the seat belt
switch.
Ch€ck continuitv between terminals A and B.
a There should be continuity with the seat belt
unbuckled.
a There should be no continuity with the seat belt
is buckled.
23-172
t