Horn: Description and Operation

At all times, battery voltage is applied to terminals 86 and 87 of the horn relay. Pressing the horn switch grounds the horn relay coil. The relay coil can also be grounded on CKT 28 by the Remote Function Actuator (RFA) Module. (Refer to Keyless Entry). The horn relay contacts close and apply battery voltage to the horns. The horns sound until the horn switch is released.