Lincoln Aviator 2020-2023 Service Manual / Electrical / Instrumentation and Warning Systems / Horn / Description and Operation - Horn - System Operation and Component Description

Lincoln Aviator: Horn / Description and Operation - Horn - System Operation and Component Description

System Operation

System Diagram- Vehicles Without Adaptive Steering


Item Description
1 Clockspring
2 Horn switch
3 SCCM
4 BCM
5 BCMC
6 Horn

Horn Operation - Vehicles Without Adaptive Steering

The horn switch consists of 2 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 module 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 the ground signal which is routed through the clockspring, SCCM and then to the BCM. The BCM then energizes the non-servicable horn relay located in the BCMC. When energized, the horn relay provides voltage to the horn, enabling the horn to sound.

System Diagram- Vehicles With Adaptive Steering


Item Description
1 BCM
2 Horn switch
3 Horn
4 BCMC
5 Clockspring

Horn Operation - Vehicles With Adaptive Steering

The horn switch uses 2 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 energizes the non-servicable horn relay located in the BCMC. When energized, the horn relay provides voltage to the horn, enabling the horn to sound.

    Description and Operation - Horn - Component Location

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    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 Information, Description and Operation)...

    Other information:

    Lincoln Aviator 2020-2023 Service Manual: Removal and Installation - Transmission Internal Wiring Harness


    Special Tool(s) / General Equipment 307-625Fixture, Bench MountingTKIT-2008ET-FLMTKIT-2008ET-ROW 307-746Remover, Transmission Wiring Harness Connector Transmission Jack Vehicle/Axle Stands Wooden Block Materials Name Specification Motorcraft® MERCON® ULV Automatic Transmission FluidXT-12-QULV WSS-M2C949-A, MERCON® ULV  Removal NOTE: If removing the main control valve body harness only it is not necessary to remove the transmission case harness, refer to the Main Control Valve Body Harness steps...

    Lincoln Aviator 2020-2023 Service Manual: Removal and Installation - Rear Halfshaft


    Removal NOTICE: Never pick up or hold the halfshaft by only the inner or outer CV joint. Damage to the CV joint will occur. NOTICE: Never use a hammer to remove or install the halfshafts. Damage to the CV joint may occur. NOTICE: Never use the halfshaft assembly as a lever to position other components...

    Categories

    Activating Intelligent Access

    The intelligent access key must be within 3 ft (1 m) of the door or luggage compartment you intend to lock or unlock.

    At a Door

    Electronic door handles are on each door. Gently depress the switch inside the exterior door handle to unlock and open the door. An unlock symbol illuminates on the door window trim indicating your vehicle is unlocked.

    Lincoln Aviator. Activating Intelligent Access

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