Ford Fiesta: Horn / Horn - System Operation and Component Description. Description and Operation
Ford Fiesta 2014 - 2019 Service Manual / Instrumentation and Warning Systems / Horn / Horn - System Operation and Component Description. Description and Operation
System Operation
System Diagram
| Item | Description |
|---|---|
| 1 | Horn |
| 2 | Driver Airbag |
| 3 | Horn Switch |
| 4 | Clockspring |
| 5 | BCM |
Horn Operation
The horn switch consists of a set of contacts separated by springs. One side is connected to ground and the other side is connected to the horn signal circuit. When the driver airbag is pressed, it pushes down on the switch, collapsing the springs and allowing the contacts to touch. When the contacts touch, it closes the circuit through the clockspring to the BCM , and provides a ground signal to the BCM . The BCM then provides voltage to the horn, enabling the horn to sound.
Horn. Diagnosis and Testing
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)...
Other information:
Ford Fiesta 2014 - 2019 Service Manual: Front Display Interface Module (FDIM). Removal and Installation
Removal NOTE: Removal steps in this procedure may contain installation details. Remove the instrument panel center upper trim panel. Refer to: Instrument Panel Center Upper Trim Panel (501-12 Instrument Panel and Console, Removal and Installation)...
Ford Fiesta 2014 - 2019 Service Manual: Air Deflector. Removal and Installation
Special Tool(s) / General Equipment Flat-Bladed Screwdriver Removal NOTE: Removal steps in this procedure may contain installation details. NOTE: The roof opening panel glass must be in the fully open position...
Categories
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- Body Control Module (BCM). Removal and Installation
- Maintenance Schedules
Wheels and Tires. Diagnosis and Testing
Preliminary Inspection
Verify the customer concern by carrying out a road test on a smooth road. If any vibrations are apparent, Refer to the Symptom Chart: NVH.To maximize tire performance, inspect for signs of incorrect inflation and uneven wear, which may indicate a need for balancing, rotation or front suspension alignment.
Correct tire pressure and driving techniques have an important influence on tire life. Heavy cornering, excessively rapid acceleration and unnecessary sharp braking increase tire wear.
Correct tire pressure and driving techniques have an important influence on tire life. Heavy cornering, exce
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