Lincoln Navigator: Intake Air Distribution and Filtering - 3.5L EcoBoost (272kW/370PS) / Intake Air Flow. Diagnosis and Testing
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).
| Module |
DTC |
Description |
Action |
| PCM |
P0111:00 |
Intake Air Temperature Sensor 1 Circuit Range/Performance (Bank 1): No Sub Type Information |
GO to Pinpoint Test DA |
| PCM |
P0112:00 |
Intake Air Temperature Sensor 1 Circuit Low (Bank 1): No Sub Type Information |
GO to Pinpoint Test DA |
| PCM |
P0113:00 |
Intake Air Temperature Sensor 1 Circuit High (Bank 1): No Sub Type Information |
GO to Pinpoint Test DA |
| PCM |
P0505:00 |
Idle Control System: No Sub Type Information |
GO to Pinpoint Test HU |
| PCM |
P0506:00 |
Idle Control System - RPM Lower Than Expected: No Sub Type Information |
GO to Pinpoint Test HU |
| PCM |
P0507:00 |
Idle Control System - RPM Higher Than Expected: No Sub Type Information |
GO to Pinpoint Test HU |
| PCM |
P050A:00 |
Cold Start Idle Control System Performance: No Sub Type Information |
GO to Pinpoint Test HU |
| PCM |
P050B:00 |
Cold Start Ignition Timing Performance 'A': No Sub Type Information |
GO to Pinpoint Test HU |
| PCM |
P050E:00 |
Cold Start Engine Exhaust Temperature Too Low: No Sub Type Information |
GO to Pinpoint Test HU |
| PCM |
P115E:00 |
Throttle Actuator Control Throttle Body Air Flow Trim at Max Limit: No Sub Type Information |
GO to Pinpoint Test HU |
| PCM |
P1548:00 |
Engine Air Filter Restriction: No Sub Type Information |
GO to Pinpoint Test HU |
Global Customer Symptom Code (GCSC) 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).
| Symptom |
Action |
| Start/Run/Move >
Starting >
No Crank >
Always |
GO to Pinpoint Test HU |
| Start/Run/Move >
Starting >
Slow Crank/Battery >
Always |
GO to Pinpoint Test HU |
| Start/Run/Move >
Starting >
Hard Start/Long Crank >
Always |
GO to Pinpoint Test HU |
| Start/Run/Move >
Starting >
Auto-Start-Stop >
Inoperative |
GO to Pinpoint Test HU |
| Driving Performance >
Runs Rough >
All Running Modes >
Always |
GO to Pinpoint Test DA |
| Driving Performance >
Idle Quality >
Fast >
Always |
GO to Pinpoint Test HU |
| Driving Performance >
Idle Quality >
Slow >
Always |
GO to Pinpoint Test HU |
| Driving Performance >
Idle Quality >
Slow Return >
Always |
GO to Pinpoint Test HU |
| Driving Performance >
Idle Quality >
Rough >
Always |
GO to Pinpoint Test DA |
| Driving Performance >
Stalls/Quits >
Deceleration >
Always |
GO to Pinpoint Test HU |
| Driving Performance >
Lack/Loss of Power >
Acceleration >
Always |
GO to Pinpoint Test HU |
| Driving Performance >
Lack/Loss of Power >
Cruise/ Steady Speed >
Always |
GO to Pinpoint Test HU |
| Driving Performance >
Hesitates/Stumble >
Acceleration >
Always |
GO to Pinpoint Test DA |
| Driving Performance >
Engine Surge >
At Idle >
Always |
GO to Pinpoint Test DA |
| Driving Performance >
Engine Surge >
Cruise/ Steady Speed >
Always |
GO to Pinpoint Test HU |
Pinpoint Tests
PINPOINT TEST DA: INTAKE AIR TEMPERATURE (IAT) SENSOR
  Introduction
Normal Operation and Fault Conditions
Refer to the DTC Fault Trigger Conditions.
DTC Fault Trigger Conditions
| DTC |
Description |
Fault Trigger Condition |
| PCM P0111:00 |
Intake Air Temperature Sensor 1 Circuit Range/Performance (Bank 1): No Sub Type Information |
Sets when the PCM detects the IAT sensor value does not correlate with
the CAC temperature sensor value or the IAT2 sensor value at ignition ON
after a calibrated soak period (typically 6 to 8 hours).
If the IAT2 sensor is not present, the ECT sensor value is used for the
rationality test.
This DTC also sets if the IAT sensor value exceeds the maximum
calibrated temperature threshold while driving.
|
| PCM P0112:00 |
Intake Air Temperature Sensor 1 Circuit Low (Bank 1): No Sub Type Information |
Sets when the PCM detects the IAT sensor signal is less than the self-test minimum.
An IAT sensor PID
reading less than the self-test minimum with ignition ON engine OFF or
during any engine operating mode indicates a concern is present.
|
| PCM P0113:00 |
Intake Air Temperature Sensor 1 Circuit High (Bank 1): No Sub Type Information |
Sets when the PCM detects the IAT sensor signal is greater than the self-test maximum.
An IAT sensor PID
reading greater than self-test maximum with the ignition ON engine OFF
or during any engine operating mode indicates a concern is present.
|
Possible Sources
-
IAT sensor circuitry concern
-
IAT sensor (12A697)
-
PCM (12A650)
|
PINPOINT TEST HU: INTAKE AIR SYSTEMS
| Introduction
Normal Operation and Fault Conditions
Refer to the DTC Fault Trigger Conditions.
The IMRC sensor values should change when the IMRC is commanded open or closed.
DTC Fault Trigger Conditions
| DTC |
Description |
Fault Trigger Condition |
| PCM P0505:00 |
Idle Control System: No Sub Type Information |
Sets when the PCM detects the desired RPM could not be reached or controlled during the KOER self-test.
This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs). Diagnose other Diagnostic Trouble Codes (DTCs) first.
If no other
Diagnostic Trouble Codes (DTCs) are present, inspect the intake air
system for air restrictions, vacuum leaks, and damage. If no concerns
are present, clear the DTC and carry out the KOER , self-test.
|
| PCM P0506:00 |
Idle Control System - RPM Lower Than Expected: No Sub Type Information |
Sets when the PCM detects the engine idle speed is less than the desired RPM .
This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs). Diagnose other Diagnostic Trouble Codes (DTCs) first.
If no other
Diagnostic Trouble Codes (DTCs) are present, inspect the intake air
system for air restrictions, vacuum leaks, and damage. If no concerns
are present, clear the DTC and carry out the KOER , self-test.
|
| PCM P0507:00 |
Idle Control System - RPM Higher Than Expected: No Sub Type Information |
Sets when the PCM detects the engine idle speed is greater than the desired RPM .
This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs). Diagnose other Diagnostic Trouble Codes (DTCs) first.
If no other
Diagnostic Trouble Codes (DTCs) are present, inspect the intake air
system for air restrictions, vacuum leaks, and damage. If no concerns
are present, clear the DTC and carry out the KOER , self-test.
|
| PCM P050A:00 |
Cold Start Idle Control System Performance: No Sub Type Information |
Sets when the PCM detects the difference between desired and actual
engine speed exceeds the calibrated threshold.
Disregard the freeze frame data. Freeze frame data does not apply to
the cold start monitor.
This DTC
is informational only and may be accompanied by other Diagnostic
Trouble Codes (DTCs). Diagnose other Diagnostic Trouble Codes (DTCs)
first. If no other Diagnostic Trouble Codes (DTCs) are present, inspect
the intake air system for air restrictions, vacuum leaks, and damage.
If no concerns
are present, clear the Diagnostic Trouble Codes (DTCs) and verify the
engine coolant temperature is below 37.8°C (100°F). Allow the vehicle to
soak for 2 to 3 hours if necessary for the engine coolant temperature
to fall below 37.8°C (100°F). Start the engine without touching the
accelerator pedal and allow the engine to idle for 6 minutes in park.
If no Diagnostic Trouble Codes (DTCs) are present and the MIL is not
illuminated after idling for 6 minutes, carry out the KOER , self-test
to confirm that no Diagnostic Trouble Codes (DTCs) are present and the
repair is complete.
|
| PCM P050B:00 |
Cold Start Ignition Timing Performance 'A': No Sub Type Information |
Sets when the PCM detects the difference between desired and commanded
spark timing exceeds the calibrated threshold.
Disregard the freeze frame data. Freeze frame data does not apply to
the cold start monitor.
This DTC
is informational only and may be accompanied by other Diagnostic
Trouble Codes (DTCs). Diagnose other Diagnostic Trouble Codes (DTCs)
first. If no other Diagnostic Trouble Codes (DTCs) are present, inspect
the intake air system for air restrictions, vacuum leaks, and damage.
If no concerns
are present, clear the Diagnostic Trouble Codes (DTCs) and verify the
engine coolant temperature is below 37.8°C (100°F). Allow the vehicle to
soak for 2 to 3 hours if necessary for the engine coolant temperature
to fall below 37.8°C (100°F). Start the engine without touching the
accelerator pedal and allow the engine to idle for 6 minutes in park.
If no Diagnostic Trouble Codes (DTCs) are present and the MIL is not
illuminated after idling for 6 minutes, carry out the KOER , self-test
to confirm that no Diagnostic Trouble Codes (DTCs) are present and the
repair is complete.
|
| PCM P050E:00 |
Cold Start Engine Exhaust Temperature Too Low: No Sub Type Information |
Sets when the PCM detects the catalyst temperature ratio exceeds the
calibrated value and the MIL illuminates. The PCM calculates the actual
catalyst warm up temperature during a cold start. The PCM then compares
the actual catalyst temperature to the expected catalyst temperature
model.
The difference
between the actual and expected temperatures is a ratio. This DTC sets
when this ratio exceeds the calibrated value and the malfunction
indicator lamp (MIL) illuminates.
Disregard the freeze frame data. Freeze frame data does not apply to
the cold start monitor.
This DTC
is informational only and may be accompanied by other Diagnostic
Trouble Codes (DTCs). Diagnose other Diagnostic Trouble Codes (DTCs)
first. If no other Diagnostic Trouble Codes (DTCs) are present, inspect
the intake air system for air restrictions, vacuum leaks, and damage.
If no concerns
are present, clear the Diagnostic Trouble Codes (DTCs) and verify the
engine coolant temperature is below 37.8°C (100°F). Allow the vehicle to
soak for 2 to 3 hours if necessary for the engine coolant temperature
to fall below 37.8°C (100°F). Start the engine without touching the
accelerator pedal and allow the engine to idle for 6 minutes in park.
If no Diagnostic Trouble Codes (DTCs) are present and the MIL is not
illuminated after idling for 6 minutes, carry out the KOER , self-test
to confirm that no Diagnostic Trouble Codes (DTCs) are present and the
repair is complete.
|
| PCM P115E:00 |
Throttle Actuator Control Throttle Body Air Flow Trim at Max Limit: No Sub Type Information |
Sets when the PCM detects the maximum allowed compensation is reached and is no longer able to compensate for buildup.
Install a new throttle body. Refer to the appropriate 303-04 section, Fuel Charging and Controls.
|
| PCM P1548:00 |
Engine Air Filter Restriction: No Sub Type Information |
Sets when the PCM detects the airflow is out of range at various engine
speeds and during WOT operation when compared to the calibrated value.
If this DTC
sets, inspect the intake air system and replace the air filter if no
restrictions are found. Refer to the appropriate 303-12 section, Intake
Air Distribution and Filtering for air filter replacement.
|
Possible Sources
- Intake air system concern
- Exhaust system concern
- Air cleaner assembly (including air cleaner element) (9600)
- Air inlet tube (9F843)
- Clean air tube hose and resonator (9R504) and (9F593)
- Throttle body assembly (9E926)
-
PCM (12A650)
|
System Operation
Adaptive Airflow
Vehicles equipped with electronic throttle control (ETC) have an
adaptive airflow strategy that allows the PCM to correct for changes in
the airflow...
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:
Special Tool(s) /
General Equipment
Flat-Bladed Screwdriver
Interior Trim Remover
Activation
Open the liftgate window glass.
Remove the liftgate latch access cover from the center of the liftgate trim panel...
Removal
NOTE:
Removal steps in this procedure may contain installation details.
NOTE:
Left-hand (LH) shown, right-hand (RH) similar.
NOTE:
Short wheel base shown, long wheelbase similar.
Remove the loadspace trim panel...
Intake Air Distribution and Filtering - System Operation and Component Description. Description and Operation
Intake Air Pressure and Temperature. Diagnosis and Testing