Lincoln Aviator: Power Steering / Description and Operation - Power Steering - Overview
Overview
The EPAS
system provides steering assist by replacing the conventional hydraulic
valve system with a steering gear equipped with an integrated
electrical motor and PSCM. The motor operation and level of steering assist provided is controlled by the PSCM.
System Operation
System Diagram
Item
Description
1
SECM
2
ECU
3
Private CAN
4
IPMA
5
SIMA
6
PSCM
7
GWM
8
Locking solenoid
9
SASM
10
BCM
11
PCM
12
IPC
13
SUMA
14
RCM
15
Motor
16
HVAC module
17
APIM
Network Input Message Chart
SECM Network Input Messages
Broadcast Message
Originating Module
Message Purpose
Active front steering request
PSCM
Requests steering angle changes for stability control events...
System Operation
System Diagram
Item
Description
1
EPAS gear
2
EPAS motor
3
EPAS position sensor
4
EPAS torque sensor
5
PSCM
6
GWM
7
PCM
8
IPC
9
BCM
10
RCM
11
ABS
12
IPMB
13
IPMA
14
PAM
15
SASM
16
SCCM
17
SUMA
Network Message Chart
PSCM Network Input Messages
Broadcast Message
Originating Module
Message Purpose
Anti-lock brake control activated
ABS module
Informs the PSCM an anti-lock brake event is taking place...
Other information:
System Operation
System Diagram
Item
Description
1
BCM
2
Turn Signals
3
Hood Ajar Switch
4
Liftgate Ajar Switch
5
IPC
6
Courtesy Lamps
7
Passive Key
8
RTM
9
RGTM
10
GWM
11
GWM
12
Intrusion Sensor
13
Horn
14
DLC
15
DCME (Left Front Door)
16
Door Ajar Switch
17
Power Liftgate
18
Manual Liftgate
19
DCMF (Right Front Door)
20
Door Ajar Switch
21
DCMG (Left Rear Door)
22
Door Ajar Switch
23
DCMH (Right Rear Door)
24
Door Ajar Switch
25
DDM
26
PDM
Network Message Chart
BCM Network Input Messages
Broadcast Message
Originating Module
Message Purpose
RKE data
RTM
Used by the BCM to arm/disarm the perimeter alarm or to activate/deactivate the panic alarm...
Special Tool(s) /
General Equipment
205-153
(T80T-4000-W)
Handle
303-1246Engine Spreader BarTKIT-2006UF-FLMTKIT-2006UF-ROW
303-1247VCT Spark Plug Tube Seal Remover and InstallerTKIT-2006UF-FLMTKIT-2006UF-ROW
303-1248Camshaft holding toolsTKIT-2006UF-FLMTKIT-2006UF-ROW
303-1634Lift Eyes (2)TKIT-2014D-ROW3TKIT-2014D-FL_ROW
303-1696Camshaft holding fixture
303-409
(T92C-6700-CH)
Remover, Crankshaft SealTKIT-1992-FH/FMH/FLMHTKIT-1993-LMH/MH
Floor Crane
Mounting Stand
Plastic Scraper
Flat-Bladed Screwdriver
Materials
Name
Specification
Motorcraft® Silicone Gasket RemoverZC-30-A
-
Motorcraft® Metal Surface Prep WipesZC-31-B
-
Motorcraft® Metal Brake Parts CleanerPM-4-A, PM-4-B
-
NOTICE:
During engine repair procedures, cleanliness is extremely
important...
Categories
The front outboard and rear safety restraints
in the vehicle are combination lap and
shoulder belts.
Insert the belt tongue into the proper
buckle (the buckle closest to the direction
the tongue is coming from) until you hear
a snap and feel it latch. Make sure that
you securely fasten the tongue in the
buckle.

To unfasten, press the release button
and remove the tongue from the buckle.
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