Ford Escape: Horn / Description and Operation - Horn - System Operation and Component Description
System Operation
System Diagram
E341593
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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:
HF45 Transmission
Item
Part Number
Description
1
70487048
Input shaft oil seal
2
11771177
Right Hand (RH) halfshaft seal
3
----
Damper housing/cover assembly to transmission case bolts (27 required)
4
79757975
Damper housing
5
7F4097F409
Transmission oil sump baffel
6
7D2887D288
Oil collector plate
7
7D288..
Special Tool(s) /
General Equipment
307-805Alignment Pins (2)
Ford Diagnostic Equipment
Removal
NOTE:
This step is only necessary when installing a new transmission or ISC (Inverter System Controller).
Download the module information to the diagnostic tool using the Programmable Modules Installation routine.
Use the General Equipment: Ford Diagnostic Equipment
..