Description ~Nd Operation; Horns Operation; Horns Circuit Description - GMC Chevrolet Camaro 1998 Service Manual

8-568 Horns
Description and Operation
Horns Operation
The horn system starts at the underhood electrical
center with the horn MiniFuse® fuse. The circuit goes
from the horn MiniFuse® fuse to the the H/L DR
HORN MaxiFuse® and from there to the horn relay. At
the relay the circuit splits. One branch of the circuit
goes through the relay coil to the horn switch in
the steering column. The other branch of the circuit
goes through the relay contacts to the horn.
When closed, the horn switch provides a ground path
for the horn relay coil. The current flows into the
relay coil, closing the contacts which allows the horn
to sound.
Horns Circuit Description
Chevrolet
Battery voltage is applied at all times to the horn relay
at the following terminals:
• Terminal E6
• Terminal E8
A ground is placed on the horn relay coil at terminal F8
when one of the following actions occur:
• A horn switch is pressed
• The body control module (BCM) initiates a
tamper/alarm cycle
The horn relay contacts close. This action applies
battery voltage to the horns. The horns continue
to sound until one of the following actions occur:
• The horn switch is released.
• The tampeFJalarm cycle ends.
Body and Accessoties
Pontiac
Battery voltage is applied at all times to the horn relay
at the following terminals:
• Terminal E6
• Terminal EB
A ground path is provided to the horn relay coil at
terminal F8 under the following conditions:
• When the inflater module is pressed against a
spring loaded ground plate in the steering wheel.
• When the BCM initiates a tamper/alarm cycle
The horn relay contacts close. This action applies
battery voltage to the horns. The horns continue
to sound until one of the following actions occur:
• The inflator module is released.
• The tamper/alarm cycle ends.
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