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:
Recycled Coolant
We do not recommend the use of recycled
coolant as an approved recycling process is
not yet available.
Note: Dispose of used coolant in the
appropriate manner.
Follow your community's regulations and
standards for recycling and disposing of
automotive fluids...
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).
Diagnostic Trouble Code Chart
Module
DTC
Description
Action
BCM
B10C7:01
Interior Trunk Antenna: General Electrical Failure
GO to Pinpoint Test A
BCM
B10C9:01
Interior Front Antenna: General Electrical Failure
GO to Pinpoint Test A
BCM
B10D7:05
PATS Key: System Programming Faliure:
GO to Pinpoint Test C
BCM
B10D7:55
PATS Key: Not Configured:
GO to Pinpoint Test D
BCM
B10D8:00
PATS Key Less Than Minimum Programmed: No Sub Type Information:
GO to Pinpoint Test E
BCM
B10DA:51
PATS Target Identifier: Not Programmed:
GO to Pinpoint Test F
BCM
B1336:01
Left Front Door External Antenna: General Electrical Failure
GO to Pinpoint Test A
BCM
B1337:01
Right Front Door External Antenna: General Electrical Failure
GO to Pinpoint Test A
PCM
P161A:00
Incorrect Response from Immobilizer Control Module:General Electrical Failure
GO to Pinpoint Test G
PCM
P161B:00
Incorrect Response from Secondary Immobilizer Control Module:General Electrical Failure
GO to Pinpoint Test G
SOBDMC
P161A:00
Incorrect Response from Immobilizer Control Module:General Electrical Failure
GO to Pinpoint Test G
Symptom Chart
Symptom Chart: PATS
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices...