F 350 4WD Pickup V8-351 5.8L VIN H EFI (1997)
Audible Warning Device: Description and Operation
Key-In-Ignition Warning
The warning chime/buzzer sounds when the driver door is open with the key in the ignition switch lock cylinder, and continues to sound until the key is
removed or the door is closed. When the key is in the ignition switch lock cylinder, the key-in-ignition switch is closed and ground is supplied to the
warning chime/buzzer module through Circuit 158 (Bk/Pk). When the driver door is open, the driver door lamp switch is closed and power is supplied to
the module through Circuit 159 (R/Pk).
