Ford Escape: Perimeter Anti-Theft Alarm / Description and Operation - Perimeter Anti-Theft Alarm - Overview
Overview
The perimeter anti-theft alarm system has three operation modes:
-
ARMED - The perimeter anti-theft alarm is armed when the
ignition is OFF and all vehicle entry points have been electrically
locked for 20 seconds.
-
ACTIVE - When the perimeter anti-theft alarm activates,
the horn sounds and all turn signals and interior courtesy lamps flash.
The horn stops sounding after 30 seconds and the lights continue to
flash for up to 5 minutes.
-
DISARMED - The perimeter anti-theft alarm is disarmed
when a vehicle entry point is open or unlocked, or if the ignition is
ON.
The panic alarm operates similar to the perimeter alarm, but only
activates when the ignition is OFF and the RKE transmitter panic button
is used. For additional information of the panic alarm function,
Refer
to: Handles, Locks, Latches and Entry Systems - System Operation and
Component Description (501-14 Handles, Locks, Latches and Entry Systems,
Description and Operation).
Visual
and audible feedback is also provided when locking or unlocking the
vehicle. For detailed information of the vehicle locking and unlocking
feedback,
Refer to: Handles, Locks, Latches and Entry Systems -
System Operation and Component Description (501-14 Handles, Locks,
Latches and Entry Systems, Description and Operation).
A
switch inhibit feature temporarily disables the door lock control
switches 20 seconds after the vehicle is electronically locked. For
detailed information of the switch inhibit feature,
Refer to:
Handles, Locks, Latches and Entry Systems - System Operation and
Component Description (501-14 Handles, Locks, Latches and Entry Systems,
Description and Operation).
System Operation
System Diagram
Item
Description
1
Power Liftgate
2
Hood Ajar Switch
3
Passive Key
4
Horn
5
GWM
6
GWM
7
PDM
8
DLC
9
IPC
10
RTM
11
BCM
12
Left Door Lock Control Switch
13
DDM
14
Right Door Lock Control Switch
15
Ignition Switch
1..
Other information:
Removal
NOTE:
This step is only necessary when installing a new component.
NOTE:
The PMI (programmable module installation) process
must begin with the current DSM (driver front seat module) installed. If
the current DSM (driver front seat module) does not respond to the
diagnostic scan tool, the tool may prompt for As-Built Data as part of
the repair.
Using a diagnostic scan ..
System Operation
Principles of Operation
Power Transfer Unit (PTU) Operation
The PTU has four (4) modes of operation: Connected, Connecting,
Disconnected, and Disconnecting. Each mode is commanded by the AWD
module. The power transfer unit contains a reversible DC
motor and two hall effect position sensors. The motor moves the shift
fork which connects or disconnects the dog clut..