Horn
Base Part Number: 13801
DTC Chart(s)
DTC Chart: Horn
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
Body Control Module (BCM) DTC Chart
DTC | Description | Actions |
|---|---|---|
B1323:11 | Horn Switch: Circuit Short To Ground | GO to Pinpoint Test B |
B1C55:12 | Horn Relay: Circuit Short to Battery | GO to Pinpoint Test A |
B1C55:14 | Horn Relay: Circuit Short to Ground or Open | If the horn is inoperative, GO to Pinpoint Test A If the horn is always on, GO to Pinpoint Test B |
Symptom Chart(s)
Symptom Chart: Horn
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
Symptom Chart
Condition | Possible Sources | Actions |
|---|---|---|
The horn is inoperative | Refer to Pinpoint Test | GO to Pinpoint Test A |
The horn is always on | Refer to Pinpoint Test | GO to Pinpoint Test B |
Pinpoint Tests
The Horn Is Inoperative
Refer to Wiring Diagrams Cell 44 for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Horn - System Operation and Component Description (413-06 Horn, Description and Operation).
DTC Chart
DTC | Description | Fault Trigger Condition |
|---|---|---|
B1C55:12 Horn Relay: Circuit Short to Battery | A Continuous Memory Diagnostic Trouble Code (CMDTC) that sets when the BCM detects a short to voltage on the horn relay control circuit. The BCM disables the horn when this DTC is set. | |
B1C55:14 Horn Relay: Circuit Short to Ground or Open | This DTC sets when the BCM detects a short to ground or an open on the horn relay control circuit. |
Possible Sources
Fuse Wiring, terminals or connectors Clockspring Horn Horn relay Horn switch BCM
Visual Inspection and Diagnostic Pre-checks
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.