Honda Acura NSX 1991 Service Manual page 1152

Lights-on Reminder System
-Description
NOTE: Refer to page 23-158 for wiring description of
the lights-on reminder circuit, and page 23-162 for the
input test of the circuit.
When the ignition key is turned to "0" position and re-
moved, with the lights on, voltage is applied to the
reminder circuit on the integrated control unit. When you
open the driver's door, the circuit senses ground through
the closed door switch.
With voltage at the "A6" terminal, ground at the "B2"
terminal and no voltage at the "A5" terminal, the chime
is activated to remind the driver to turn off the lights.
23-l 66
-Chime Test
1 . Remove the dashboad lower panel, then disconnect
the 2-P connector from the foot light.
2. Disconnect the 2-P connector from the floor wire
harness.
3. Test chime operation by connecting battery positive
to the ORN terminal, and negative to the BLK termi-
nal, and cycling the power on-off repeatedly.
4. If the chime fails to sound every time power is cy-
cled, replace it.
CHIME
View from wire side