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:
Special Tool(s) /
General Equipment
300-OTC1585AEPowertrain Lift
Vehicle/Axle Stands
Wooden Block
Removal
NOTICE:
Suspension fasteners are critical parts that affect the
performance of vital components and systems. Failure of these fasteners
may result in major service expense...
System Operation
System Diagram
NOTE:
The system diagrams include all component options. Some components may not be equipped on the vehicle.
Audio System - 10 Speaker System
Item
Description
1
APIM
2
AM/ FM1 Antenna Amplifier
3
Display Unit
4
GWM
5
BCM
6
ACM
7
FCIMB
8
IPC
9
GPS/Satellite Radio Antenna
10
RACM
11
Speakers
12
PCM
13
Audio/SYNC Switches
14
SIMA
15
FM2 Antenna Amplifier
16
SCCM
17
Subwoofer Amplifier and Speaker
Audio System - 14 or 28 Speaker System
Item
Description
1
APIM
2
Display Unit
3
GWM
4
BCM
5
ACM
6
FM2 Antenna Amplifier
7
DSP
8
IPC
9
Satellite/GPS Antenna
10
AM/ FM1 Antenna Amplifier
11
ANC Microphones
12
PCM
13
Speakers
14
SCCM
15
Audio/SYNC Switches
16
SIMA
17
FCIMB
SYNC System
Item
Description
1
Roof Antenna
2
APIM
3
Display Unit
4
Media Hub
5
Microphone
6
ABS Module
7
RCM
8
GWM
9
BCM
10
PCM
11
IPC
12
FCIMB
13
ACM
14
Wi-Fi Device
15
Bluetooth Device
16
DSP
17
ACM
18
Speakers
19
TCU
20
TCU Antenna
21
Wi-Fi Device
22
SCCM
23
Audio/SYNC Switches
24
SIMA
25
GPS/Satellite Radio Antenna
26
Cellular Antenna
Network Message Chart
ACM Network Input Messages
Broadcast Message
Originating Module
Message Purpose
Accelerator pedal position
PCM
Uses the accelerator pedal position percentage for the ANC system operation...
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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