Lincoln Aviator: Engine Emission Control - 3.0L EcoBoost / Description and Operation - Engine Emission Control - System Operation and Component Description
System Operation
Positive Crankcase Ventilation (PCV) System
The PCV system circulates crankcase gases through the intake air system into the engine where they are burned. The PCV system regulates the amount of ventilated air and blowby gases to the intake manifold.
The PCV system equipped with a removable PCV valve, a PCV valve integral to the valve cover, or a crankcase ventilation oil separator, as part of the PCV system. The PCV system on some vehicles will include a crankcase pressure sensor to detect a disconnection of the fresh air hose.
The PCV systems comply with OBD
PCV monitoring requirements to prevent accidental disconnection from the valve cover. For more information about the PCV monitor and crankcase pressure sensor, refer to Positive Crankcase Ventilation (PCV) System Monitor in this section.
Positive Crankcase Ventilation (PCV) System Monitor
The PCV system monitor consists of a modified PCV system design. The PCV
system is designed to prevent accidental disconnection. High retention
force molded plastic lines are used from the valve cover to the intake
manifold. The diameter of the lines and the intake manifold entry
fitting are increased so that disconnection of the lines may cause an
engine to stall. In the event the vehicle does not stall if the line
between the intake manifold and PCV
system is disconnected, the vehicle has a large vacuum leak that causes
the vehicle to run lean at idle. The lean condition illuminates the MIL and stores a lean bank 1 or bank 2 DTC.
The PCV monitor sets a DTC if the PCV
vacuum hose is disconnected, or if a large air leak between the
throttle body (TB) and intake valves is present. An idle speed symptom
may be present when the DTC is set.
The PCV
system includes a crankcase pressure sensor to detect a disconnection
of the fresh air hose. A disconnection of the fresh air hose would allow
the discharge of crankcase vapor into the atmosphere while the engine
was under boost. The fresh air hose connects the intake air system to
the valve cover, with the crankcase pressure sensor mounted in the fresh
air hose. The PCV
monitor will detect a fresh air hose disconnection at the intake air
system or the valve cover, by monitoring crankcase pressure sensor
changes during engine cranking, and driving with higher intake airflow.
For additional PCV information, refer to Positive Crankcase Ventilation (PCV) System in this section
Component Description
Crankcase Pressure Sensor
The crankcase pressure sensor measures the vacuum in the PCV system. A change in the PCV system vacuum greater than a calibrated threshold indicates the PCV system is disconnected and will set a DTC. The crankcase pressure sensor is located in the PCV system hose between the intake air system air cleaner and the engine crankcase PCV inlet.
On some vehicles, the CKCP has one digital signal output from the
sensor. There is one reference voltage circuit and one signal return
circuit for the sensor. For all others, the CKCP has one analog signal
output from the sensor. There is one reference voltage circuit and one
signal return circuit for the sensor.
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:
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
DDM
B1088:83
LIN Bus "B": Value of Signal Protection Calculation Incorrect
GO to Pinpoint Test A
DDM
B1088:87
LIN Bus "B": Missing Message
GO to Pinpoint Test A
DDM
B1189:77
Front Window Position Sensor: Commanded Position Not Reachable
GO to Pinpoint Test A
DDM
B118A:77
Rear Window Position Sensor: Commanded Position Not Reachable
GO to Pinpoint Test C
DDM
B118E:01
Left Front Window: General Electrical Failure
GO to Pinpoint Test A
DDM
B1190:01
Left Rear Window: General Electrical Failure
GO to Pinpoint Test C
DDM
B12DC:01
Front Window Motion/Position Sensor: General Electrical Failure
GO to Pinpoint Test A
DDM
B12DC:92
Front Window Motion/Position Sensor: Performance or Incorrect Operation
GO to Pinpoint Test A
DDM
B12DD:01
Rear Window Motion/Position Sensor: General Electrical Failure
GO to Pinpoint Test C
DDM
B12DD:92
Rear Window Motion/Position Sensor: Performance or Incorrect Operation
GO to Pinpoint Test C
DDM
B12E9:23
Rear Window Local Up/Down Switch: Signal Stuck Low
GO to Pinpoint Test C
DDM
B13F0:01
Left Rear Power Window Motor: General Electrical Failure
GO to Pinpoint Test C
DDM
B13F0:64
Left Rear Power Window Motor: Signal Plausibility Failure
GO to Pinpoint Test C
DDM
B13F1:01
Driver Power Window Motor: General Electrical Failure
GO to Pinpoint Test A
DDM
B13F1:64
Driver Power Window Motor: Signal Plausibility Failure
GO to Pinpoint Test A
DDM
U2013:24
Switch Pack: Signal Stuck High
GO to Pinpoint Test A
PDM
B1189:77
Front Window Position Sensor: Commanded Position Not Reachable
GO to Pinpoint Test B
PDM
B118A:77
Rear Window Position Sensor: Commanded Position Not Reachable
GO to Pinpoint Test D
PDM
B118F:01
Right Front Window: General Electrical Failure
GO to Pinpoint Test B
PDM
B1191:01
Right Rear Window: General Electrical Failure
GO to Pinpoint Test D
PDM
B12DC:01
Front Window Motion/Position Sensor: General Electrical Failure
GO to Pinpoint Test B
PDM
B12DC:92
Front Window Motion/Position Sensor: Performance or Incorrect Operation
GO to Pinpoint Test B
PDM
B12DD:01
Rear Window Motion/Position Sensor: General Electrical Failure
GO to Pinpoint Test D
PDM
B12DD:92
Rear Window Motion/Position Sensor: Performance or Incorrect Operation
GO to Pinpoint Test D
PDM
B12E9:23
Rear Window Local Up/Down Switch: Signal Stuck Low
GO to Pinpoint Test D
PDM
B13E5:23
Passenger Power Window Switch Up: Signal Stuck Low
GO to Pinpoint Test B
PDM
B13E6:23
Passenger Power Window Switch Down: Signal Stuck Low
GO to Pinpoint Test B
PDM
B13EF:01
Right Rear Power Window Motor: General Electrical Failure
GO to Pinpoint Test D
PDM
B13EF:64
Right Rear Power Window Motor: Signal Plausibility Failure
GO to Pinpoint Test D
PDM
B13F2:01
Passenger Power Window Motor: General Electrical Failure
GO to Pinpoint Test B
PDM
B13F2:64
Passenger Power Window Motor: Signal Plausibility Failure
GO to Pinpoint Test B
Symptom Chart(s)
Symptom Chart: Glass, Frames and Mechanisms
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices...
Special Tool(s) /
General Equipment
Transmission Jack
Removal
NOTE:
Removal steps in this procedure may contain installation steps.
Release the fuel system pressure.
Refer to: Fuel System Pressure Release (310-00A Fuel System - General Information - 3...