Ford Explorer: Horn / Description and Operation - Horn - System Operation and Component Description
System Operation
System Diagram
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| Item | Description |
|---|---|
| 1 | Clockspring |
| 2 | Horn Switch |
| 3 | SCCM |
| 4 | BCM |
| 5 | BCMC |
| 6 | Horn |
Horn Operation
The horn switch uses sets of contacts separated by springs. The lower set is connected to ground and the upper set is connected to the horn signal circuit. When the driver airbag is pressed, it pushes down on the upper set of contacts, collapsing the springs and allowing the contacts to touch. When the contacts touch, it completes the circuit and provides a ground signal through the clockspring to the BCM horn input. The BCM then grounds the integrated horn relay coil in the BCM-C to energize the non-serviceable relay. When energized, the horn relay provides voltage to the horn, enabling the horn to sound.
Diagnosis and Testing - Horn
Diagnostic Trouble Code (DTC) Chart
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Informati..
Other information:
Ford Explorer 2020-2024 Service Manual: General Procedures - Steering Wheel Cover Repair
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Ford Explorer 2020-2024 Service Manual: Description and Operation - Exterior Lighting - System Operation and Component Description
System Operation Headlamps System Diagram Item Description 1 HS-CAN2 2 BCM 3 LH low beam 4 RH low beam 5 SCCM 6 LH steering column multifunction switch 7 IPMA 8 GWM 9 HS-CAN1 10 Start/Stop switch 11 HCM 12 LIN 13 LIN 14 PCM 15 LH headlamp..
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Driver and Passenger Airbags
WARNING: Do not place your arms on the airbag cover or through the steering wheel. Failure to follow this instruction could result in personal injury.
WARNING: Keep the areas in front of the airbags free from obstruction. Do not affix anything to or over the airbag covers. Objects could become projectiles during airbag deployment or in a sudden stop. Failure to follow this instruction could result in personal injury or death.
WARNING: Airbags can kill or injure a child in a child restraint. Never place a rear-facing child restraint in front of an active airbag. If you must use a forward-facing child restraint in the front seat, move the seat upon which the child restraint is installed all the way back.
