Buick Encore: Horns - Description and operation
HORNS SYSTEM DESCRIPTION AND OPERATION
System Description
The horn system consists of the following components:
- HORN fuse
- Underhood fuse block (contains PCB horn relay)
- Horn switch
- Horn-low note
- Horn-high note
- Body control module (BCM)
14 Horns Block Diagram
![Fig. 6: 14 Horns Block Diagram](images/books/3712/index714.gif)
Fig. 6: 14 Horns Block Diagram
![14 Horns Block Diagram](images/books/3712/index715.jpg)
![14 Horns Block Diagram](images/books/3712/index716.jpg)
System Operation
The vehicle horn system is activated under the following conditions:
- When the horn switch is depressed
- The BCM commands the horns ON under any of the following conditions:
- When the content theft deterrent system detects a vehicle intrusion-For
further information refer to
Theft Systems Description and Operation .
- When the panic button is depressed on the remote control door lock
transmitter-For further
information refer to Keyless Entry System Description and Operation .
- When the keyless entry system is used to lock the vehicle, a horn chirp
may sound to notify the
driver that the vehicle has been locked. The notification feature may be
enabled or disabled through
personalization. For further information refer to Keyless Entry System
Description and
Operation .
- When the OnStar system is used to sound the horns if equipped-For
further information, refer to
OnStar Description and Operation
Circuit Operation
Battery positive voltage is applied at all times to the horn relay coil and
the horn relay switch. Pressing either of
the horn switches applies ground to the horn relay control circuit. The BCM may
also apply ground to the horn
relay control circuit as described above. When the horn relay control circuit is
grounded, the horn relay is
energized and battery positive voltage is applied to the horns through the horn
control circuit. The horns sound
as long as ground is applied to the horn relay control circuit.
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Schematic wiring diagrams
IMMOBILIZER WIRING SCHEMATICS (ENCORE)
Immobilzer System
Fig. 1: Immobilzer System
IMMOBILIZER WIRING SCHEMATICS (Encore)
Immobilzer System
Fig. 2: Immobilzer System
DTC B2955: Security sensor data circuit
DIAGNOSTIC CODE INDEX
DTC B2955: SECURITY SENSOR DATA CIRCUIT
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
THEFT DETERRENT MODULE REPLACEMENT (ENCORE)
Fig. 3: Theft Deterrent Module (Encore)
Theft Deterrent Module Replacement (Encore)
THEFT DETERRENT MODULE REPLACEMENT (Encore)
Fig. 4: Theft Deterren
SEE MORE:
NOTE: This is GENERAL information. This article is not intended to
be specific to any
unique situation or individual vehicle configuration. For model-specific
information see appropriate articles where available.
INTRODUCTION
NOTE: This is GENERAL information. This article is not intended to
be sp
DTC B094C: Right side object detection control module
DIAGNOSTIC CODE INDEX
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diagnostic Procedure Ins