Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)
Key Reminder Switch: Description and Operation
Ignition Key Warning
Battery voltage is supplied at all times to the seat belt reminder/key-on beeper circuit in the integrated control unit. When you turn on the ignition key
switch the integrated control unit senses ground. If you open the driver's door, the door switch closes, causing the beeper to sound until the door is
closed.
