Ford Escape: Horn / Description and Operation - Horn - System Operation and Component Description
System Operation
System Diagram
E341593
*.sttxt {
visibility: hidden;
}
*.stcallout {
visibility: visible;
}
1
Horns
2
Horn
Switch
3
BCM-C
4
BCM
5
SCCM
6
Clockspring
Item |
Description |
1 |
Horns |
2 |
Horn Switch |
3 |
BCM-C |
4 |
BCM |
5 |
SCCM |
6 |
Clockspring |
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 BCMC
to energize the non-serviceable relay. When energized, the horn relay
provides voltage to the horn, enabling the horn to sound.
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:
What Is Temporary Neutral Mode
This mode keeps your vehicle in neutral
(N) when you switch your vehicle off. Use
this mode if you exit your vehicle or switch
your vehicle off at an automatic car wash.
Note: Do not tow your vehicle in this mode.
Note: Automatic return to park (P) is
delayed when your vehicle is in this mode...
Overview
The IPC uses the following methods and functionality to alert the driver of vehicle conditions:
gauges
informational indicators
warning indicators
warning messages
warning chimes
The base IPC uses a single centered 4-inch screen to display driver information with analog gauges...